Chromium-6 in drinking water

I just read about the high Chromium-6 levels in Kingman and specifically in Golden Valley.  Here is the US map:

When you click on our area (dark blue) you get a pop up window:

Chromium-6 testing

And here’s KINGMAN:

Other cities like LHC are MUCH lower.  Look at Castle Rock!  What / where is POE 5?

The EWG article that explains why you should care:

… In 2008, a two-year study by the National Toxicology Program found that drinking water with chromium-6, or hexavalent chromium, caused cancer in laboratory rats and mice.[3] Based on this and other animal studies, in 2010, scientists at the respected and influential California Office of Environmental Health Hazard Assessment concluded that ingestion of tiny amounts of chromium-6 can cause cancer in people, a conclusion affirmed by state scientists in New Jersey and North Carolina….

As usual, the industry resorted to falsifying studies:

… In 2001, as state scientists conducted a risk assessment to guide the regulation, an epidemiologist named Jay Beaumont noticed something fishy. A Chinese scientist had revised a key study of chromium-6 in drinking water, reversing his original finding of a strong link to stomach cancer. Some members of a “blue-ribbon” panel advising the state cited the revised study as evidence against a strong regulation. But when Beaumont tried to find out why the scientist had changed his mind, it turned out he was dead.

Beaumont learned that the study was rewritten not by the original author, but by consultants hired by PG&E to help defend the Brockovich case. Before the Chinese scientist died, they paid him a token amount [26] for access to his original data, manipulated it to hide the link to stomach cancer, and published the revised study in a scientific journal without disclosing their or PG&E’s involvement. …”

As usual, corporations can engage in this fraud with impunity!

So I looked up the Meadview, the Joshua Tree Water Company:
Unfortunately, there’s no separate test for Chromium-6 and it doesn’t show ppb, so I have no idea what this means.

Meadview Chromium
Click on image to enlarge

I definitely would NOT drink the Castlerock water without filtering it out and I have no idea how difficult it is and what kind of filter is required.

My email to our supervisor Jean Bishop:


Supervisor Bishop,

Has the County looked into the cause of the high levels of Chromium-6, especially in the Castle Rock water?

[URL to this post]

Is the County going to do something about it? Warn the residents? Recommend a specific filter?

Much appreciate more info!

Thank you,

Christine Baker

I will update with the response.

UPDATE 6/19/18:

Supervisor Bishop wrote yesterday:


Gary Lasham, Public Works,  provided the below information.

As you can see we barely register a detection of Chromium, 0.033% of the MCL (Maximum Contaminate Level).

It should be noted that all well waters have some level of chromium in them.

Per our most recent Consumer Confidence Report Chromium is not an issue in GVID.

Inorganic Chemicals


Y or N

Running Annual Average (RAA) OR Highest Level Detected Range of All Samples


MCL MCLG Sample Month & Year Likely Source of Contamination
Chromium (ppb) N .033 100 100 02/2017 Discharge from steel and pulp mills; Erosion of natural deposits

So here’s my email to Gary Lasham:


Hello Mr. Lasham,

Below is my email with supervisor Bishop and before I contact EWG regarding the alleged high Chromium-6 levels, I would like to confirm that we are talking about the same water.

I don’t know how “GVID” relates to the EWG test results.

[URL to this post]

Do you know what the Sample Points in the EWG chart mean?

DSMRT from POE 5 (61 ppb)

EPTDS from POE 5 (79 ppb)

Is there info online somewhere that identifies all these Sample Facilities and Sample Points listed by EWG?

It’s inexplicable that the .033 ppb on your test is so much LOWER than the lowest EWG result, and you even include ALL Chromium, not just Chromium-6.

I found out about the EWG Chromium-6 testing because the page was linked in a FaceBook discussion about someone wanting to move to Kingmann / Golden Valley and he was advised not to drink the water. So if the EWG tests are false / faked — whatever, they need to be corrected as it impacts negatively on Kingman / Golden Valley and prospective newcomers might choose NOT to move here.

And residents already living here might waste a lot of money on filters they don’t need.

Greatly appreciate any light you can shed on this mystery!

Thank you,

Christine Baker

I’ll update again with the response.  This is pretty weird!

And the message I submitted to EWG through their contact form at

Subject: Kingman AZ high Chromium-6 levels denied by Mohave County


You can see my blog post about the EWG tests for Chromium-6 at
[This URL]

I also added my communications with our supervisor Jean Bishop and she provided Mohave County test results MUCH lower than your lowest result, and it even contains all Chromium, not just Chromium-6.

This seems impossible and I’ll greatly appreciate your assistance with figuring out what’s going on with our water.


Christine Baker

I’ll update with the response.

A very quick response from the County’s Steven Latoski, director Mohave County Public Works:

Good Afternoon Ms. Baker:

I am writing as follow up to your recent inquiry on GVID tested and reported levels of chromium.  Please note that the 2017 Consumer Confidence Report filed with the Arizona Department of Environmental Quality finds that – through a December 2017 water quality test – the level of chromium stood at 12 ppb, which is below the Maximum Contaminant Level of 100 ppb.

The report is attached for your reference.

Thank you.


Steven P. Latoski, P.E., PTOE
Mohave County Public Works

The attached report: GVID CCR Report for 2017

Click on image to enlarge
Click on image to enlarge

So we went from .033 ppb to 12 ppb in one day.
That’s 363 time more!  How does THAT happen?

Maximum Contaminant Level (MCL):
The highest level of a contaminant that is allowed in drinking water

Maximum Contaminant Level Goal MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health
So, I conclude that Arizona could not possibly care less about save drinking water because:

1) They don’t test separately for Chromium-6

2)  The level of containment is 100 while California says 02.

Where do we go from here?  I have a few questions for Mr. Latoski.
And we’ll see whether EWG responds.

My followup questions to Mr. Latoski:


Mr. Latoski,

Thanks for the quick reply!

Unfortunately, I don’t see answers to my questions:

> I don’t know how “GVID” relates to the EWG test results.
> Do you know what the Sample Points in the EWG chart mean?
> DSMRT from POE 5 (61 ppb)
> EPTDS from POE 5 (79 ppb)
> Is there info online somewhere that identifies all these Sample
> Facilities and Sample Points listed by EWG?

The 2017 GVID report you attached shows Chromium at 12 ppb. Yesterday’s report showed .033 ppm.

How does Chromium go from .033 ppb to 12 ppb?

That’s 363 times more!

Of course it is all rather irrelevant because we don’t know whether it’s the harmless Chromium-3 or the cancer causing Chromium-6.

So the most important question:

Does Mohave County care about the health of its residents or merely about complying with obviously outdated MCL and MCLG limits?

As you know (if you read my post), California’s Public Health Goal for Chromium-6 is 0.02 ppb — NOT 100 ppb!

I’ll greatly appreciate your explanations!


Christine Baker

And this morning I had the response from Steven Latoski:

Good Morning Ms. Baker:

My apologies for not addressing all of your questions.

Please note that my office has not been contacted by EWG (Environmental Working Group), which is a non-profit environmental organization.  In reviewing the link provided, the GVID water system is not represented in the article.

The Consumer Confidence Report provided for GVID represents a Chromium Maximum Contaminant Level (MCL) of 100 parts per billion (ppb).  This is a MCL set through federal and/or state regulations.  For more information, please see:

In closing, as I am unfamiliar with EWG and their practices in representing tests and data, I cannot provide interpretations or draw conclusions from any information posted by the organization.  I thank you for your understanding in this regard.

Have a great day.

Kind regards,


There you have it.
Remember that I had written to Jean Bishop:
“Has the County looked into the cause of the high levels of Chromium-6, especially in the Castle Rock water?”

They then provided this weird info about .033 ppm, the next day it’s 12 ppm and now I find out they have NO CLUE what the EWG report is referring to.

I documented that Mohave County has ZERO interest in the health of the residents.

They will do NOTHING unless they are required by law.   If the EPA didn’t set federal drinking water standards, you’d be drinking sewage.  You’re lucky they only give you cancer and whatever diseases.

Our government’s ONLY goal is to keep sales tax low and to make the rich richer  — at YOUR expense.

Any voters here?

Update 6/22/18: 
I didn’t get a response from EWG.

Update 7/21/19:
EWG did eventually send an email, but it was so long ago and I can’t find the email.  Get so many emails from EWG.  Maybe I’ll remember a key term to search for.

And of course the county has done nothing and the people have done nothing.

This IS Mohave County, where mediocreness is the norm and nobody cares how we live and die.

8 Responses to Chromium-6 in drinking water

  1. Wow, very interesting! Maybe time to show your reserch to Erin Bogonovich? She’s the para legal that,sued the Electrical company and won a Multi Millionl law suit to the litte communities over in the california desert (death valley) area! Those residents suffered a whole host of very lethal illness, up to and including death.

  2. Hello Virginia, I know about Erin’s lawsuit and all. The problem is that around here it’s “natural”.

    That’s why our supervisor Jean Bishop doesn’t care and it’s incredibly hard to prove what actually gives people cancer unless it’s clearly industrial pollution.

    My take on it is that at minimum, the County should test all the major wells for Chromium-6 (not combine 3 and 6) and then we’ll know that either EWG lied about their tests or the County lied in the tests they gave me. The first Count test that Bishop sent me with the .033 ppm was clearly faked.

    Since nobody here cares (you’re the first comment!), I mentioned it on Facebook, here in response to the Bishop failed recall effort and I mentioned that people can die after storms because the roads are so bad the ambulance can’t get in and also the Chromium-6 issue:

    Leslie Tyler In numerous counties I own property none of the things u explained are covered by tax payers. Most should be covered Thru a co-op. Hell most fire depts won’t even put your fire out in thousands of counties unless you pay. My parents live on a gravel road An guess who has to maintain it. The owners of the property on it. U want that stuff paid for. Pay taxes. Bottom line. An supervisor bishop doesn’t control the BOS she is one of a board that makes a decision through governing municipality guidelines. So get use to it, pay it out of your pocket, or move. Simple lots of choices for u!! Quick question for you… what do u do to help your community????!!!???

    I also posted it on FB in Mohave County News and another group and I get more insults than support.

    It’s not that most people here are stupid, but the stupid ones are LOUD and “normal” people just don’t want to get involved.

    Sadly, Leslie Taylor, from Golden Valley, where it looks like EWG shows the highest Chromium-6, is right. I have lots of choices:

    “… So get use to it, pay it out of your pocket, or move. Simple lots of choices for u!! …”

    I’m too invested to move where more intelligent life congregates, so I’ll probably order the $300 Berkey and continue getting used to live among imbeciles.

    I don’t have it in me to beg for donations for water tests and I’m terribly disappointed with EWG. If they had at least emailed me the actual tests with the lab info and if they had just told me WHERE those high results come from, I would have tried to do “something.”

  3. Daily Chromium Needs…..

    Health pros say 1000 micrograms per day is upper limit.

    When a chromium-based deficiency does occur, common symptoms include:
    poor blood glucose control.
    worsened levels of weak bones and bone loss.
    low energy, fatigue.
    poor skin health.
    higher risk for high cholesterol and heart complications.
    low concentration and poor memory.
    worsened eye health.

    Chromium, a type of chemical element that’s actually a hard and brittle metal, is a trace mineral needed by the body in small amounts for healthy functioning. What is chromium most well-researched for in regard to promoting health? Blood sugar and diabetes control, heart health, weight management and brain health are all known benefits of chromium.

    Chromium plays a role in the insulin-signaling pathways that allow our bodies to control the amount of sugar we take in, helping balance blood glucose levels and giving us stable energy. Research also shows that chromium can help protect DNA chromosomes from damage, which means chromium may be able to halt cell mutations that can lead to various chronic diseases. In addition, chromium is associated with longevity and improved cardiovascular health due to its role in metabolizing fats, in addition to proteins, carbs and other nutrients.

    According to the National Institute of Health, there are two types of chromium: 1) trivalent (chromium 3+), which is considered “biologically active” and can be found in foods, and 2) hexavalent (chromium 6+), which is considered toxic and unsafe for humans, so it’s used in industrial applications and isn’t meant to be acquired from foods. (1) (Chromium 6 is a chemical that appears to cause cancer and was featured in the Erin Brockovich story that was made into a film, plus it infiltrated the tap water for over two-thirds of all Americans.) (2)

    What is chromium found in? Chromium is naturally present in many whole foods, including brewer’s yeast, certain kinds of meats, vegetables, potatoes and whole grains. Chromium enters the body mostly through diet since it’s stored in soil and rocks that penetrate the crops we wind up eating, plus in smaller amounts in the water that we drink. Drinking tap water supplies some of our chromium, as does cooking in stainless-steel cookware.

    GNC sells “Ultra Chromium 400 mcg” for $6.29 a bottle.

    1 microgram equals .001 milligram. 1 ppb = 1 microgram per liter of water.

    1 milligram per cubic meter of drinking water (264 gallons) = 1 ppb called parts per billion. 1 microgram = .001 milligram called mcg.

    So I can save $6.29 a bottle by drinking Mohave tap water to get those precious mcg of chromium or else all this bad stuff is going to start happening to me if I just drink distilled water like I had planned to. You can safely take 400 mcg of Chromium per day and it’s considered healthy as long as you don’t go over 1000 mcg a day. If I dissolved 1 milligram of chromium chloride as a salt in 264 gallons of water and drank it…………the water alone would surely kill me. Maybe I could drink the 264 gallons real slow and them allow my kidneys the time to strain out the chromium.

    The real contamination we have with excessive chromium comes from leather touching our skin. Leather hides are tanned with chromium salts and these salts leach through our skin when we wear leather and we sweat on it and reabsorb the salt from the leather on our skin. This would provide plenty of chromium salt to also save the $6.29. So these California standards are way too high and we’re dealing with micrograms that are essential for normal body function. ppb is parts per billion………..the chromium salt on leather is so massive that you should work to outlaw leather products to save baby jane from chromium poisoning. I have chewed on leather as a kid and it tasted salty and “good”. This is why my fingernails are so hard and shiny…..imo. This early childhood chromium has stayed with me all my life and I need it to use my thumbnail as a screwdriver at times or to scare people in a classroom on the chalkboard and get them to shut up. I can’t buy the chromium I need because at $6.29 a bottle (it’s cheaper in Mexico I am sure) it’s just too high. I need more Mohave County drinking water to get to under my 1000 mcg dosage so my nails don’t get soft and so my bodily functions keep functioning. 1 milligram is 1000th of a gram and if that 1000th of a gram was dissolved in 264 gallons of water, you’d be at 1 ppb with that to drink all those gallons. How long would that take? If I ground up a chromium pill from GNC in a glass of water……..would I exceed the California daily limit of chromium? I bet I would. it was calculated that the smell from pine trees in a rain forest exceeds the EPA limits for clean air standards. So we need to outlaw breathing in rain forests or cut down all the pine trees because they put out pine tar into the air at cancerous levels as determined by the EPA. This is why the desert air is so clean…….no more trees. But we get toxic smells from creosote bushes so that needs to be next on the agenda to save Middle Earth.

    Peace Inn, -J. Mac. ” A green grocer, with your tip for the day.”

    • Thank U…your explanation was overdue, for the most part. The Chromium listed in most water municipal reports is ‘Trivalent Chromium’….and NOT Hexavalent Chromium / 6. Big Difference. Chromium 6 is a concern when observed at levels exceeding current EPA guidelines..However, the EPA guidelines for Chrom.6 toxicity, is in need of re-evaluation and Calif Scientists, have their sights on the 0.02ppb level.
      For the record, there are other contaminants in many cities drinking water, here in Arizona, and across the country that bears sincere review and correction, from the falsified data from industry and government, that allowed toxic contaminants in our drinking waters, in the first place. Fluoride and Inorganic Arsenic are just two. Pharmaceuticals are also, now found in municipal drinking waters, and no testing for them, is required, and this poses some serious concerns, on the effects of ‘other peoples’ Rx drugs, getting into the drinking water and resurfacing for consumption a second time, by the public at large. I would suggest folks to read up on this little known issue that can and is rearing its ugly head, in our population now. Current water processing systems in water districts are unable to filter out many of the Pharmaceutical drug ingredients and subsequently gets passed on, in our drinking water. Millions, even billions will have to be spent, to address all the contaminants now showing up in our water systems. After all, when all is said and done… ‘We are what we EAT and DRINK’. Take preliminary precautions and use filters and specialized filtration, if necessary, to address whatever is in your drinking water. Semper Paratus.

      • PS. For those concerned, and looking for some possible answers, to local water issues, the use of High quality Whole-Home combination sedimentation/Carbon filter[s] for pre-filtration, coupled with a 4, 5 or 6-stage Reverse Osmosis Drinking water system, incorporating a TFC membrane, for the inside of the home, will remove > H. chromium 6, Inorganic Arsenic, Chlorine, Chloramines, and a host of other contaminants, while improving the taste of water, as well.
        There are various systems available on the market. Choose wisely. Shop and compare prices.. [apples vs apples]. Not all systems are created equal. My own 30yrs. experience has taught me well. When I moved to Arizona here, in Mohave County, I studied the water reports, did my own tests, designed and installed my own systems. I don’t drink the tap water from any city, anymore [.] I would advise a water softening system, as well. I personally prefer a metered, Potassium based system, as opposed to a Salt-softened system, Otherwise…be prepared to clean and remove scale from your bathroom fixtures, faucets, and Service your waterheater, as well.
        Scale will collect on and erode most anything, that water touches in your home. Prices for them, will vary markedly and performance, as well. Size accordingly. Be careful. Good Luck.

        • Thanks so much for all your input!

          What did you test your water for, how much did it cost and where do you live?

          And regarding water softener systems, I have never had one and at an AZ state water presentation a year or two ago they said to NOT use water softeners as they pollute our drinking water even more.

          We just recently drained our water heater and it was GROSS! In the bottom it was dark brown / red from the algae at the wells. It was the first time we drained it since we installed it in 2009.

          You are totally right about the scale on fixtures, but I don’t think it’s bad in Meadview. My Airbnb SPARKLES and the faucets and toilets had been seriously neglected before I started cleaning it.

          I use ONLY vinegar for cleaning and the 12-year old bathroom faucet at my house looks brand new. I’m by no means a clean freak, but just wiping the faucet off every week or two does the trick — no scrubbing, just a bit of vinegar.

          I hear that the Mohave Valley water is REALLY bad, but have never been there.

          Anyway, I’d love to get some more info on testing, thanks!

  4. Incapable of understanding the difference between Chromium-3 and Chromium-6, J. Mac?

    You didn’t even look at the EWG article because you are so incredibly smart?

    I invite you to a 100% natural drink:

    ALL NATURAL ingredients:

    A good amount of arsenic and uranium (both in our water), with a topping of e-coli and salmonella (also naturally occurring here).

    All natural! 100% natural!

    Are you up for it, J. Mac?

  5. J. Mac never got back to me regarding his free drink. Wonder why ….

    However, EWG FINALLY got back to me today.

    Hi Christine,

    This particular data is UCMR-3 data which was a program run through the federal EPA that required large systems to test for a set of specific unregulated chemicals. More on the UCMR-3 can be found here:

    The systems (of which Kingman qualifies as a large water utility) had to send water samples to a set of EPA approved labs. The data was then sent to both the EPA and the water utility.

    Hexavalent chromium is not a regulated contaminant and therefore the water utility is not required to normally test for it.

    The water utility is required to provide a report to residents that shows the results of the UCMR testing. That URL is here:

    I’m going to contact the Kingman water people when I have some time.

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