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EWG's Tap Water Database — 2021 UPDATE

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Perfluorooctane sulfonate (PFOS)

Gahanna City PWS

NOTE: Gahanna City PWS purchases water from Columbus Public Water System which is required to test for perfluorooctane sulfonate (pfos). Sample information shown below was taken by Columbus Public Water System.

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/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: Gahanna City PWS purchases water from Columbus Public Water System which is required to test for perfluorooctane sulfonate (pfos). Sample information shown below was taken by Columbus Public Water System.

Date Lab ID Result
2014-03-17201403190943AMND
2014-03-17201403190699AMND
2014-03-17201403190663AMND
2014-06-09201406120524AMND
2014-06-09201406120312AMND
2014-09-16201409180655AMND
2014-09-16201409180592AMND
2014-09-29201410020163AMND
2014-12-16201412180438AMND
2014-12-16201412180386AMND