Know Your Environment. Protect Your Health.

9-chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)

City of Deridder Water System

9-chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) is a member of a group of perfluorinated chemicals used in many consumer products. 9Cl-PF3ONS 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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023ND40ND
2024ND40ND

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1 ppt

The EWG Health Guideline of 1 ppt for 9Cl-PF3ONS was defined by EWG as 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.

ppt = parts per trillion

All test results

Date Lab ID Result
2023-11-1635842562001SE1ND
2023-11-1635842562003SE1ND
2023-11-1635842562005SE1ND
2023-11-1635842562007SE1ND
2024-05-1435879668001SE2ND
2024-05-1435879668003SE2ND
2024-05-1435879668005SE2ND
2024-05-1435879668007SE2ND