Know Your Environment. Protect Your Health.

Perfluorooctane sulfonate (PFOS)

Sunset Ridge Condominiums

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
20211.10 ppt440.716 ppt - 1.54 ppt
20220.786 ppt64ND - 1.78 ppt
20231.07 ppt111.07 ppt

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.3 ppt

The EWG Health Guideline of 0.3 ppt for PFOS was defined by EPA's final toxicity value from the Office of Water’s Final Human Health Toxicity Assessment. This health guideline protects againat cardiovascular harm and harm to fetal growth.

EPA Maximum Contaminant
Level (MCL): 4 ppt

ppt = parts per trillion

All test results

Date Result
2021-10-181.54 ppt
2021-10-180.716 ppt
2021-10-181.04 ppt
2021-10-181.10 ppt
2022-01-18ND
2022-04-191.78 ppt
2022-04-190.797 ppt
2022-04-190.828 ppt
2022-04-19ND
2022-07-191.31 ppt
2023-07-121.07 ppt