Water companies are regulated by EPA guidelines, which are currently DRASTICALLY OUT OF DATE. For several decades, the LEGAL LIMIT for hexavalent chromium (a KNOWN carcinogen made famous in the movie Erin Brockovich) in our water was 5,000 times higher than what the California EPA (aka the Office of Environmental Health Hazard Assessment) says it should be (click here to see the proof). It has been adjusted so that now it is "only" 500 times what the California EPA says it should be. It could be decades before the EPA guidelines are adjusted to meet the California guidelines, so you must take it upon yourself to find out the facts, learn what is in your water, and know what the health effects are!
Again... I know the water departments work very hard to filter toxins out of the water and I admire them for all they do. It is truly amazing how clean they ARE able to get the water, given how many contaminants it starts out with. But there are still many places that were reported by the Environmental Working Group and other agencies to have 1 and 25 parts per billion, of this toxic chemical. For anyone who doesn't think that sounds like a lot... like I didn't... the birth control NuvaRing is active at just 0.035 parts per billion. Albuterol (which can stop an asthma attack) is effective at 2.1 parts per billion.
San Jose, Mountain View, Livermore and other cities in the bay area have levels of Hexavalent Chromium that are considered WELL above the "California health recommendation" for what is considered safe. Mountain View was reported by The Environmental Working Group to have .48 - 1.9 PPB. San Jose was measured at 3.82 - 5.7 PPB. Livermore was reported to have 4.2 PPB, though a news report I watched said it got as high as 11 PPB in one area (watch the video called "The Cost of Cleaning up Chromium 6, further down the page). There are many others. You can see a list I made, of some levels of Hexavalent Chromium, in different California cities, by clicking HERE.
In my opinion, we shouldn't wait for the EPA and the water companies to clean the water for us. Why? Because if they really did get it down to a TRULY SAFE level (.02 parts per billion) our water would cost about 4 times more (you can see it explained in "The Cost of Cleaning up Chromium 6" - just scroll down).
Because we only drink about 5 to 10% of our water (vs. flushing the toilet, watering the yard, etc) it seems to me that the most cost effective method is HOME FILTRATION. Protect yourself and protect your family, and don't wait (and hope) for the government to fix the problem for us, because NOBODY wants to see an increase in our taxes, to filter 90 percent of water that people don't even drink.
This information below was originally from THIS PAGE:
Chromium-6 is highly toxic and has been found to cause allergic dermatitis, and stomach and gastrointestinal cancer in animals and humans. Used in the manufacture of stainless steel, textiles, anticorrosion coatings, and in leather tanning, it gets into drinking water through industrial pollution. It is also present naturally in some minerals.
Note from Ualani: Gastrointestinal cancer can include the following: Esophageal cancer, stomach cancer, pancreatic cancer, liver cancer, gallbladder cancer, colorectal cancer, anal cancer, and Gastrointestinal carcinoid tumors.
After the National Toxicology Program found that chromium-6 caused cancer in rats and mice in 2008, California proposed the establishment of a statewide legal limit of 0.06 parts per billion (ppb) of chromium-6 in drinking water. On December 31, the Office of Environmental Health Hazard Assessment of the California Environmental Protection Agency revised its proposed limit to .02 ppb because of new findings about the vulnerability of young children and sensitive populations to chromium-6 exposure.
-----------------------------------------
Currently, the EPA has the limit for ALL types of chromium, set at 100 parts per billion. However there is a HUGE difference between HEXAVALENT chromium (a known carcinogen) and Trivalent Chromium (which is generally considered safe at much higher levels).
The groundwater in Hinkley, CA (the place where the famous Erin Brockovich movie was filmed), is STILL not cleaned up. It is very expensive and time consuming to clean up Hexavalent Chromium. Many people assume that the levels of Hexavalent Chromium in Hinkley were extremely high.
Update 10/13/17:
I just saw the following regarding how much chromium 6 was actually in the water, and need to verify this for accuracy, but this is the first time I'm seeing that the level was well over the legal limit. The things I'd seen previously, are highlighted below the new findings, in pink.
------------------------
New findings (what I just saw personally). I realized that this part about the level being 580 PPB was not on the page about "Hinkley Groundwater Contamination".... it is only printed on the page about Hexavalent Chromium.... go figure.
Hinkley[edit]
Hexavalent chromium was found in drinking water in the southern California town of Hinkley and was brought to popular attention by the involvement of Erin Brockovich and Attorney Edward Masry. The source of contamination was from the evaporating ponds of a PG&E (Pacific Gas and Electric) natural gas pipeline Compressor Station located approximately 2 miles southeast of Hinkley. Between 1952 and 1966, chromium(VI) was used to prevent corrosion in the cooling stacks. The wastewater was then dumped into the unlined evaporating ponds. As a result, the chromium(VI) leaked into the groundwater source.[43] The 580 ppb chromium(VI) in the groundwater in Hinkley exceeded the Maximum Contaminant Level (MCL) of 100 ppb for total chromium currently set by the United States Environmental Protection Agency (EPA).[44] It also exceeded the California MCL of 50 ppb (as of November 2008) for all types of chromium.[45] California first established an MCL specifically for hexavalent chromium in 2014, set at 10 ppb.[13] Prior to that only total chromium standards applied.
A more recent study found that from 1996 to 2008, 196 cancers were identified among residents of the census tract that included Hinkley — a slightly lower number than the 224 cancers that would have been expected given its demographic characteristics.[46][47][48] In June 2013 Mother Jones published an article regarding work by the Center for Public Integrity that was critical of the study, and some others by the same researcher, John Morgan. This comes in contrast with the conclusions reached by the EPA and California’s Department of Public Health that chromium(VI) does in fact cause cancer.[49]
At the time that a PG&E background study of chromium(VI) was conducted, average chromium(VI) levels in Hinkley were recorded as 1.19 ppb with a peak of 3.09 ppb. The PG&E Topock Compressor Station averaged 7.8ppb and peaked at 31.8ppb. The California MCL standard was still at 50 ppb at the completion of this background study.[50] In comparison, the Office of Environmental Health Hazard Assessment (OEHHA) of the California EPA, proposed a health goal of 0.06 ppb of chromium(VI) in drinking water in 2009.[51] In 2010, Erin Brockovich returned to Hinkley in the midst of claims that the plume was spreading, despite PG&E cleanup efforts.[52] PG&E continues to provide bottled watered for the residents of Hinkley as well as offer to buy their homes. All other ongoing cleanup documentation is maintained at California EPA's page.[43]
------------------------------------
What I previously wrote:
I've seen that the AVERAGE amount of hexavalent chromium in the Hinkley drinking water, at the time of the lawsuit, was just 1.19 parts per billion (I am doing further research to verify the accuracy of this number, but I keep seeing 1.19 on several sites). Reportedly, Hinkley water did have a peak as high as 20 parts per billion... but the reported AVERAGE was just 1.19 (The current hexavalent levels are higher in San Jose and Hawaii!!). This is what it currently says on Wikipedia.
Average hexavalent chromium levels in Hinkley were recorded as 1.19 parts-per-billion (ppb) with an estimated peak of 20 ppb. The PG&E Topock Compressor Station averaged 7.8 ppb and peaks at 31.8 ppb based on the PG&E Background Study.[2] The proposed California health goal for hexavalent chromium is 0.02 ppb.[3]
The US EPA sets the regulatory limit of hexavalent chromium at 100ppb.
PG&E was recently cited for providing Hinkley residents with bottled water that contained levels of Chromium 6 which were just 0.14 parts per billion (Mountain View, CA, has had 10x that, and other places in California have been shown to have 100 times that amount)! OK so it's true, the Hinkley residents are a little sensitive about Chromium levels, so they had previously been able to get PG&E, long ago, to agree to give them water that had no more than 0.06 parts per billion of Hexavalent Chromium in it. That's why PG&E was cited. But still... these folks are pretty well versed on how toxic the stuff is. You can read the article HERE.
More from THIS PAGE:
to find out what level of Hexavalent Chromium was in your water, as reported by the Environmental Working group, for the years 2004-2009 (call your water department for the latest findings, or better yet... get it tested yourself!). Type in your zip code the top of the page, then choose the water company in your area.
Please look for BOTH the readings for "Total Chromium," AND also "Chromium (hexavalent)"... scroll down to see a photo of how it will appear. You will probably find it closer to the bottom of the report because it won't be listed as being over the legal limit. Because the EPA doesn't necessarily distinguish between different types of chromium (and has set the total limit for ALL types of chromium, combined, as 100 parts per billion... yes that's really true!) you should look at BOTH readings. Many water companies DO NOT BOTHER TO TEST FOR HEXAVALENT CHROMIUM (they just test for "total chromium"). You can see for yourself by checking out my page that lists the readings for several different cities in California (you will notice how many counties have "Not listed" in their water report because the data for Chromium 6 simply wasn't provided).
CLICK HERE TO SEE IT.
Please note that this info on the EWG website is from the years 2004-2009 so you may want to also call your water dept for the latest report. The level in your water could be higher or lower, and it can vary from neighborhood to neighborhood.
More from THIS PAGE:
In its tests, EWG found that 25 of the cities tested had levels of chromium-6 higher than California’s original proposed limit of .06 ppb; now all 31 cities with chromium-tainted water have levels higher than California’s new proposed limit of .02 ppb. The highest levels of chromium-6 were found in Norman, OK which measured 12.9 ppb; Honolulu, HI with 2.00 ppb; Riverside, CA at 1.69 ppb; Madison, WI at 1.58 ppb; and San Jose, CA which measured 1.34 ppb. The utilities that service the 31 cities whose tap water contained chromium-6 provide water to over 26 million people.
And in fact, EWG believes the actual number of people drinking chromium-6 contaminated tap water is much larger. According to its 2009 analysis of drinking water, 74 million people drink tap water polluted with “total chromium.” Total chromium includes trivalent chromium (which occurs naturally in many vegetables, fruits, meats, grains and yeast), as well as the toxic chromium-6. Preliminary tests have found that most of the total chromium in water is chromium-6, yet the EPA’s legal limit for total chromium is 100 ppb—5,000 times higher than California’s new proposed limit for chromium-6.
The info below is from THIS PAGE:
Hexavalent Chromium
The Dangers of Hexavalent Chromium (Chromium 6) in California Drinking Water
On April 15, 2014, the California Department of Public Health (DPH)released the final hexavalent chromium drinking water standard of 10 parts per billion (ppb). In addition to being 10 years late, the standard is 500 times higher than the level that State scientists have determined would not result in significant public health problems. In addition, since the vast majority of contaminated water sources have less than 10 ppb, only 15% (or less) will receive treatment. That means that 85% of the contaminated sources will not be treated and potentially millions of Californians will continue to be exposed to unsafe levels of this carcinogen. This is a significant point as DPH ‘s decision was primarily based on the costs of water treatment, despite the State’s health related analysis.
Because the public would bear the costs of potential illness, while polluters would not be held accountable, Clean Water Action pushed for a more health protective drinking water standard. While disappointed with the final regulation we were, with our members’ support, able to prevent DPH from proposing an even weaker standard. We also worked with the Governor’s office to move the drinking water program to the State Water Resources Control Board (scheduled for later this year), where it will be more integrated with other water protection programs and funding sources. This move provides the opportunity to explore how we can best reform the ways we establish drinking water regulations in order to achieve the best results.
You can read a report (pictured below) by the California Environmental Protection Agency, on Hexavalent Chromium by CLICKING HERE.
Background on Hexavalent Chromium in California
The movie Erin Brockovich alerted the public to the great suffering the little town of Hinkley experienced due to hexavalent chromium in their drinking water. Today, Hinkley is little more than a ghost town thanks to continued water contamination, health concerns, and plummeting property values. While the levels in most other impacted communities are much lower than Hinkley’s, hexavalent chromium has been detected in 2475 California drinking water sources. These sources are spread throughout 51 out of 58 counties.
In order to protect public health, the California Legislature passed SB 351 (Ortiz) in 2001, requiring the development of a state drinking water standard for hexavalent chromium by January 2004. Despite this legal deadline, it took an additional 10 years to finalize the regulation.
Chromium occurs in the environment largely in two forms: trivalent chromium (chromium 3), which is an essential human nutrient, and hexavalent chromium (chromium 6), which is the most toxic form of the element. Currently, chromium is regulated in drinking water as total chromium and the California drinking water standard of 50 parts per billion measures the amount of both toxic (hexavalent) and non- or less-toxic (trivalent) chromium in the water. Basing the standard on the combined levels of both types of chromium does not adequately protect public health because hexavalent chromium is more toxic at much lower levels than the other form. A combined standard leaves the public vulnerable to health effects from hexavalent chromium.
What are the health effects of hexavalent chromium?
Hexavalent chromium is a carcinogen and a reproductive toxicant for both males and females. As a result, it was added to California's Proposition 65 list of toxic substances (pdf) in December 2008. Exposure to hexavalent chromium occurs through breathing, ingestion, and contact with the skin. Although most of the known health impacts are related to inhalation, there is now strong data linking ingestion of hexavalent chromium, such as through drinking water, to severe health effects. In addition to cancer and reproductive harm, short and long-term exposures can lead to eye and respiratory irritation, asthma attacks, nasal ulcers, dermal burns, anemia, acute gastroenteritis, vertigo, gastrointestinal hemorrhage, convulsions, ulcers, and damage or failure of the liver and kidneys.
------------
On September 16, 2011, the California EPA proposed an amendment to the Safe Drinking Water and Toxic Enforcement Act of 1986, California code of Regulations, section 25707(b), Proposition 65. You can see the full document by CLICKING HERE.
Is it just me, or does it seem funny that asbestos is still considered safe to ingest...
but hexavalent chromium is NOT!
(yes I do realize oral exposure is very
different from inhalation but... it still sounds funny).
Please, people. Look this stuff up for yourself because I really don't want to believe what I'm reading (please contact me if you can find info that truly disputes the fact many Californians are being exposed to very high levels of Chromium 6, that are unsafe... I will be HAPPY to update this blog!!!).
LOW DOSES DO MATTER!
This is the video where learned that low doses really do matter. You can scroll to 9:40 to see the part where Ken Cook, the president of EWG, mentions that even very low parts per billion can be effective. Paxil and Cialis are active at 30 parts per billion. NUVA RING, a common birth control, is active at just 0.035 parts per billion. Hexavalent Chromium, a known carcinogen, is found in many places in California, at between .3 parts per billion, and 11 parts per billion.
EVERY AMERICAN SHOULD WATCH THESE VIDEOS BELOW (at least the first 5). The quality of your water is serious business, people. You deserve to know what's in your water!!
PS I want to give thanks to brave people like Roberta Walker and Erin Brockovich for all the hard work they have done to make sure the Hinkley community is safe (and that companies like PG&E can stay on their toes)! For anyone who doesn't know this, Roberta Walker is the woman who started investigating the levels of chromium in the water in Hinkley, when she knew it was causing health problems!
Please note that the amounts detected in the chart below have been reported to be higher in some cases. I've seen news stories that show certain places in California (like Livermore) can have up to 11 parts per billion, and in San Jose it was estimated that it's between 1 and 7 parts per billion.
(update from me):
I just saw that Dixon, California, had an average at one point, of 25 parts per billion of Chromium 6 in their water, and the LA Department of Water and Power reported levels that were up to as high as 33.7 parts per billion).
Please note that these areas may have been cleaned up by now (see this article) but I am still concerned about the effects some of the residents in these areas may be experiencing from long term exposure to this toxic chemical. Even the new legal guideline (10 parts per billion) is WELL ABOVE what the California EPA says is safe!! Again.... the AVERAGE level of Chromium 6 in Hinkley, CA, the town that developed serious health issues and sued PG&E, was 1.19 parts per billion (this is according to Wikipedia and every other source I could find online...if someone could possibly provide me with information that shows it was higher than this, I would love to see it and be able to relax, but that is the figure I keep seeing over and over).
Please be sure to watch the video above called "The Cost of Cleaning up Chromium 6."
The chart below was from THIS PAGE.
UPDATE 10/13/17 I just found this and thought I should put it here... from Wikipedia... this is the first time I'm seeing that there was a level of 580 ppb of Chromium 6, found in Hinkley water.
The Dangers of Hexavalent Chromium (Chromium 6) in California Drinking Water
On April 15, 2014, the California Department of Public Health (DPH)released the final hexavalent chromium drinking water standard of 10 parts per billion (ppb). In addition to being 10 years late, the standard is 500 times higher than the level that State scientists have determined would not result in significant public health problems. In addition, since the vast majority of contaminated water sources have less than 10 ppb, only 15% (or less) will receive treatment. That means that 85% of the contaminated sources will not be treated and potentially millions of Californians will continue to be exposed to unsafe levels of this carcinogen. This is a significant point as DPH ‘s decision was primarily based on the costs of water treatment, despite the State’s health related analysis.
Because the public would bear the costs of potential illness, while polluters would not be held accountable, Clean Water Action pushed for a more health protective drinking water standard. While disappointed with the final regulation we were, with our members’ support, able to prevent DPH from proposing an even weaker standard. We also worked with the Governor’s office to move the drinking water program to the State Water Resources Control Board (scheduled for later this year), where it will be more integrated with other water protection programs and funding sources. This move provides the opportunity to explore how we can best reform the ways we establish drinking water regulations in order to achieve the best results.
You can read a report (pictured below) by the California Environmental Protection Agency, on Hexavalent Chromium by CLICKING HERE.
You can read a report (pictured below) by the California Environmental Protection Agency, on Hexavalent Chromium by CLICKING HERE.
Background on Hexavalent Chromium in California
The movie Erin Brockovich alerted the public to the great suffering the little town of Hinkley experienced due to hexavalent chromium in their drinking water. Today, Hinkley is little more than a ghost town thanks to continued water contamination, health concerns, and plummeting property values. While the levels in most other impacted communities are much lower than Hinkley’s, hexavalent chromium has been detected in 2475 California drinking water sources. These sources are spread throughout 51 out of 58 counties.
In order to protect public health, the California Legislature passed SB 351 (Ortiz) in 2001, requiring the development of a state drinking water standard for hexavalent chromium by January 2004. Despite this legal deadline, it took an additional 10 years to finalize the regulation.
Chromium occurs in the environment largely in two forms: trivalent chromium (chromium 3), which is an essential human nutrient, and hexavalent chromium (chromium 6), which is the most toxic form of the element. Currently, chromium is regulated in drinking water as total chromium and the California drinking water standard of 50 parts per billion measures the amount of both toxic (hexavalent) and non- or less-toxic (trivalent) chromium in the water. Basing the standard on the combined levels of both types of chromium does not adequately protect public health because hexavalent chromium is more toxic at much lower levels than the other form. A combined standard leaves the public vulnerable to health effects from hexavalent chromium.
What are the health effects of hexavalent chromium?
Hexavalent chromium is a carcinogen and a reproductive toxicant for both males and females. As a result, it was added to California's Proposition 65 list of toxic substances (pdf) in December 2008. Exposure to hexavalent chromium occurs through breathing, ingestion, and contact with the skin. Although most of the known health impacts are related to inhalation, there is now strong data linking ingestion of hexavalent chromium, such as through drinking water, to severe health effects. In addition to cancer and reproductive harm, short and long-term exposures can lead to eye and respiratory irritation, asthma attacks, nasal ulcers, dermal burns, anemia, acute gastroenteritis, vertigo, gastrointestinal hemorrhage, convulsions, ulcers, and damage or failure of the liver and kidneys.
------------
On September 16, 2011, the California EPA proposed an amendment to the Safe Drinking Water and Toxic Enforcement Act of 1986, California code of Regulations, section 25707(b), Proposition 65. You can see the full document by CLICKING HERE.
Is it just me, or does it seem funny that asbestos is still considered safe to ingest...
but hexavalent chromium is NOT!
(yes I do realize oral exposure is very
different from inhalation but... it still sounds funny).
Please, people. Look this stuff up for yourself because I really don't want to believe what I'm reading (please contact me if you can find info that truly disputes the fact many Californians are being exposed to very high levels of Chromium 6, that are unsafe... I will be HAPPY to update this blog!!!).
LOW DOSES DO MATTER!
This is the video where learned that low doses really do matter. You can scroll to 9:40 to see the part where Ken Cook, the president of EWG, mentions that even very low parts per billion can be effective. Paxil and Cialis are active at 30 parts per billion. NUVA RING, a common birth control, is active at just 0.035 parts per billion. Hexavalent Chromium, a known carcinogen, is found in many places in California, at between .3 parts per billion, and 11 parts per billion.
EVERY AMERICAN SHOULD WATCH THESE VIDEOS BELOW (at least the first 5). The quality of your water is serious business, people. You deserve to know what's in your water!!
PS I want to give thanks to brave people like Roberta Walker and Erin Brockovich for all the hard work they have done to make sure the Hinkley community is safe (and that companies like PG&E can stay on their toes)! For anyone who doesn't know this, Roberta Walker is the woman who started investigating the levels of chromium in the water in Hinkley, when she knew it was causing health problems!
The movie Erin Brockovich alerted the public to the great suffering the little town of Hinkley experienced due to hexavalent chromium in their drinking water. Today, Hinkley is little more than a ghost town thanks to continued water contamination, health concerns, and plummeting property values. While the levels in most other impacted communities are much lower than Hinkley’s, hexavalent chromium has been detected in 2475 California drinking water sources. These sources are spread throughout 51 out of 58 counties.
In order to protect public health, the California Legislature passed SB 351 (Ortiz) in 2001, requiring the development of a state drinking water standard for hexavalent chromium by January 2004. Despite this legal deadline, it took an additional 10 years to finalize the regulation.
Chromium occurs in the environment largely in two forms: trivalent chromium (chromium 3), which is an essential human nutrient, and hexavalent chromium (chromium 6), which is the most toxic form of the element. Currently, chromium is regulated in drinking water as total chromium and the California drinking water standard of 50 parts per billion measures the amount of both toxic (hexavalent) and non- or less-toxic (trivalent) chromium in the water. Basing the standard on the combined levels of both types of chromium does not adequately protect public health because hexavalent chromium is more toxic at much lower levels than the other form. A combined standard leaves the public vulnerable to health effects from hexavalent chromium.
What are the health effects of hexavalent chromium?
Hexavalent chromium is a carcinogen and a reproductive toxicant for both males and females. As a result, it was added to California's Proposition 65 list of toxic substances (pdf) in December 2008. Exposure to hexavalent chromium occurs through breathing, ingestion, and contact with the skin. Although most of the known health impacts are related to inhalation, there is now strong data linking ingestion of hexavalent chromium, such as through drinking water, to severe health effects. In addition to cancer and reproductive harm, short and long-term exposures can lead to eye and respiratory irritation, asthma attacks, nasal ulcers, dermal burns, anemia, acute gastroenteritis, vertigo, gastrointestinal hemorrhage, convulsions, ulcers, and damage or failure of the liver and kidneys.
------------
On September 16, 2011, the California EPA proposed an amendment to the Safe Drinking Water and Toxic Enforcement Act of 1986, California code of Regulations, section 25707(b), Proposition 65. You can see the full document by CLICKING HERE.
Is it just me, or does it seem funny that asbestos is still considered safe to ingest...
but hexavalent chromium is NOT!
(yes I do realize oral exposure is very
different from inhalation but... it still sounds funny).
Please, people. Look this stuff up for yourself because I really don't want to believe what I'm reading (please contact me if you can find info that truly disputes the fact many Californians are being exposed to very high levels of Chromium 6, that are unsafe... I will be HAPPY to update this blog!!!).
LOW DOSES DO MATTER!
This is the video where learned that low doses really do matter. You can scroll to 9:40 to see the part where Ken Cook, the president of EWG, mentions that even very low parts per billion can be effective. Paxil and Cialis are active at 30 parts per billion. NUVA RING, a common birth control, is active at just 0.035 parts per billion. Hexavalent Chromium, a known carcinogen, is found in many places in California, at between .3 parts per billion, and 11 parts per billion.
EVERY AMERICAN SHOULD WATCH THESE VIDEOS BELOW (at least the first 5). The quality of your water is serious business, people. You deserve to know what's in your water!!
PS I want to give thanks to brave people like Roberta Walker and Erin Brockovich for all the hard work they have done to make sure the Hinkley community is safe (and that companies like PG&E can stay on their toes)! For anyone who doesn't know this, Roberta Walker is the woman who started investigating the levels of chromium in the water in Hinkley, when she knew it was causing health problems!
EVERY AMERICAN SHOULD WATCH THESE VIDEOS BELOW (at least the first 5). The quality of your water is serious business, people. You deserve to know what's in your water!!
PS I want to give thanks to brave people like Roberta Walker and Erin Brockovich for all the hard work they have done to make sure the Hinkley community is safe (and that companies like PG&E can stay on their toes)! For anyone who doesn't know this, Roberta Walker is the woman who started investigating the levels of chromium in the water in Hinkley, when she knew it was causing health problems!
(update from me):
I just saw that Dixon, California, had an average at one point, of 25 parts per billion of Chromium 6 in their water, and the LA Department of Water and Power reported levels that were up to as high as 33.7 parts per billion).
Please note that these areas may have been cleaned up by now (see this article) but I am still concerned about the effects some of the residents in these areas may be experiencing from long term exposure to this toxic chemical. Even the new legal guideline (10 parts per billion) is WELL ABOVE what the California EPA says is safe!! Again.... the AVERAGE level of Chromium 6 in Hinkley, CA, the town that developed serious health issues and sued PG&E, was 1.19 parts per billion (this is according to Wikipedia and every other source I could find online...if someone could possibly provide me with information that shows it was higher than this, I would love to see it and be able to relax, but that is the figure I keep seeing over and over).
Please be sure to watch the video above called "The Cost of Cleaning up Chromium 6."
The chart below was from THIS PAGE.
UPDATE 10/13/17 I just found this and thought I should put it here... from Wikipedia... this is the first time I'm seeing that there was a level of 580 ppb of Chromium 6, found in Hinkley water.
Hinkley[edit]
Hexavalent chromium was found in drinking water in the southern California town of Hinkley and was brought to popular attention by the involvement of Erin Brockovich and Attorney Edward Masry. The source of contamination was from the evaporating ponds of a PG&E (Pacific Gas and Electric) natural gas pipeline Compressor Station located approximately 2 miles southeast of Hinkley. Between 1952 and 1966, chromium(VI) was used to prevent corrosion in the cooling stacks. The wastewater was then dumped into the unlined evaporating ponds. As a result, the chromium(VI) leaked into the groundwater source.[43] The 580 ppb chromium(VI) in the groundwater in Hinkley exceeded the Maximum Contaminant Level (MCL) of 100 ppb for total chromium currently set by the United States Environmental Protection Agency (EPA).[44] It also exceeded the California MCL of 50 ppb (as of November 2008) for all types of chromium.[45] California first established an MCL specifically for hexavalent chromium in 2014, set at 10 ppb.[13] Prior to that only total chromium standards applied.
A more recent study found that from 1996 to 2008, 196 cancers were identified among residents of the census tract that included Hinkley — a slightly lower number than the 224 cancers that would have been expected given its demographic characteristics.[46][47][48] In June 2013 Mother Jones published an article regarding work by the Center for Public Integrity that was critical of the study, and some others by the same researcher, John Morgan. This comes in contrast with the conclusions reached by the EPA and California’s Department of Public Health that chromium(VI) does in fact cause cancer.[49]
At the time that a PG&E background study of chromium(VI) was conducted, average chromium(VI) levels in Hinkley were recorded as 1.19 ppb with a peak of 3.09 ppb. The PG&E Topock Compressor Station averaged 7.8ppb and peaked at 31.8ppb. The California MCL standard was still at 50 ppb at the completion of this background study.[50] In comparison, the Office of Environmental Health Hazard Assessment (OEHHA) of the California EPA, proposed a health goal of 0.06 ppb of chromium(VI) in drinking water in 2009.[51] In 2010, Erin Brockovich returned to Hinkley in the midst of claims that the plume was spreading, despite PG&E cleanup efforts.[52] PG&E continues to provide bottled watered for the residents of Hinkley as well as offer to buy their homes. All other ongoing cleanup documentation is maintained at California EPA's page.[43]
I have to say, this video I just saw, regarding PG&E's remediation program, is pretty impressive:
You can see a whole site about Hinkley's groundwater remediation program, HERE:
I checked the Wikipedia resource you mentioned. It indicates the backround levels of chromium 6. The background level is naturally occuring, therefore it refers to the chromium 6 level before PG&E contaminated the water.
ReplyDeleteThanks for your research. I wish I could find someone who could tell me what the level was after the contamination but no one seems to know. I even asked people in Hinkley!
ReplyDelete