Know Your Environment. Protect Your Health.

4,8-dioxa-3H-perfluorononanoic acid (ADONA)

Sammamish Plateau Water and Sewer

4,8-dioxa-3H-perfluorononanoic acid (ADONA) is a member of a group of perfluorinated chemicals used in many consumer products. ADONA 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.

 

28

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
2022ND80ND
2023ND190ND
2024ND10ND

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 ADONA 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
2022-02-164260210ND
2022-02-164260216ND
2022-02-164260267ND
2022-02-164260279ND
2022-02-164260284ND
2022-02-164260285ND
2022-02-164260285ND
2022-02-164260224ND
2023-03-134455246ND
2023-03-134455244ND
2023-03-134455245ND
2023-03-134455243ND
2023-05-15380-47663-1ND
2023-05-15380-47677-2ND
2023-05-15380-47677-1ND
2023-06-26380-52589-1ND
2023-06-26380-52589-2ND
2023-06-26380-52589-3ND
2023-06-26380-52589-4ND
2023-08-07380-58185-1ND
2023-11-06380-70122-1ND
2023-11-06380-70113-1ND
2023-11-06380-70122-2ND
2023-11-06380-70122-3ND
2023-11-21380-72408-3ND
2023-11-21380-72408-2ND
2023-11-21380-72408-1ND
2024-02-12380-82943-1ND