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EWG's Tap Water Database — 2019 UPDATE

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Perfluorooctane sulfonate (PFOS)

Sun Valley Gid

NOTE: Sun Valley Gid purchases water from Truckee Meadows Water Authority which is required to test for perfluorooctane sulfonate (pfos). Sample information shown below was taken by Truckee Meadows Water Authority.

Perfluorooctane sulfonate (PFOS) is a member of a group of perfluorinated chemicals used in many consumer products. PFOS and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND40ND
2014ND100ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

ppt = parts per trillion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppt

The EWG Health Guideline of 1 ppt for PFOS was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline applies to the entire class of PFAS detected in water.

ppt = parts per trillion

All test results

NOTE: Sun Valley Gid purchases water from Truckee Meadows Water Authority which is required to test for perfluorooctane sulfonate (pfos). Sample information shown below was taken by Truckee Meadows Water Authority.

Date Lab ID Result
2013-05-20201305210066AMND
2013-05-20201305210059AMND
2013-05-20201305210275AMND
2013-05-20201305210061AMND
2013-05-22201305230335AMND
2013-05-22201305230342AMND
2013-05-22201305230338AMND
2013-05-22201305230289AMND
2013-06-04201306050241AMND
2013-06-04201306050182AMND
2013-06-11201306120169AMND
2013-06-11201306120229AMND
2013-06-11201306120227AMND
2013-06-11201306120172AMND
2013-06-11201306120163AMND
2013-06-11201306120213AMND
2013-06-19201306200250AMND
2013-06-19201306200126AMND
2013-06-19201306200268AMND
2013-06-19201306200243AMND
2013-06-19201306200239AMND
2013-06-19201306200237AMND
2013-06-19201306200241AMND
2013-06-24201306250077AMND
2013-06-25201306260231AMND
2013-06-25201306260226AMND
2013-06-27201306280176AMND
2013-09-17201309200267AMND
2013-09-17201309200263AMND
2013-11-25201311270060AMND
2013-12-16201312180499AMND
2014-03-05201403070313AMND
2014-04-22201404250176AMND
2014-04-22201404250189AMND
2014-04-22201404250162AMND
2014-04-22201404250157AMND
2014-04-29201405020169AMND
2014-04-29201405020265AMND
2014-04-29201405020257AMND
2014-04-29201405020173AMND
2014-06-09201406110932AMND