Know Your Environment. Protect Your Health.

Perfluorononanoic acid (PFNA)

Kent Water Department

NOTE: Kent Water Department purchases water from City of Tacoma which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by City of Tacoma.

Perfluorononanoic acid, otherwise known as PFNA or C9, is a PFC similar in function and use to PFOA. These chemicals were used in the production of non-stick, stain repellent and chemically inert coatings. Click here to read more about perfluorinated chemicals.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND120ND
2014ND10ND
2015ND200ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022ND80ND
2023N/A00N/A

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.006 ppt

The EWG Health Guideline of 6 ppt for perfluorononanoic acid was defined by EPA recommended application of the toxicity value for PFDA published in the Integrated Risk Information System’s toxicological review . This health guideline harm to the immune system and harm to fetal growth and child development.

EPA Maximum Contaminant
Level (MCL): 10 ppt

ppt = parts per trillion

All test results

NOTE: Kent Water Department purchases water from City of Tacoma which is required to test for perfluorononanoic acid (pfna). Sample information shown below was taken by City of Tacoma.

Date Lab ID Result
2014-08-06201408070493AMND
2015-03-10201503110935AMND
2015-03-10201503120179AMND
2015-03-10201502170548AMND
2015-06-09201505060001AMND
2015-06-17201505060005AMND
2015-06-29201505020034AMND
2015-07-06201505020035AMND
2015-07-08201507090318AMND
2015-07-09201507100395AMND
2015-07-09201506300092AMND
2015-08-19201508200778AMND
2015-09-09201508050009AMND
2015-09-09201508050013AMND
2015-10-13201509250020AMND
2015-12-01201511130086AMND
2015-12-02201511130082AMND
2015-12-07201511130099AMND
2015-12-07201511130096AMND
2015-12-08201511130097AMND
2015-12-08201511130098AMND