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EWG's Tap Water Database — 2021 UPDATE

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Perfluorononanoic acid (PFNA)

Santa Clarita Water Division

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.

MORE ABOUT THIS CONTAMINANT

 

56

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND260ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
20190.910 ppt309ND - 4.30 ppt

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 perfluorononanoic acid 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.

EPA Maximum Contaminant
Level (MCL) 10 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2014-01-16201401170103AMND
2014-01-16201401170105AMND
2014-04-09201404110132AMND
2014-04-09201404110120AMND
2014-04-09201404110087AMND
2014-04-09201404110128AMND
2014-04-09201404110068AMND
2014-04-09201404110126AMND
2014-04-09201404110093AMND
2014-04-09201404110130AMND
2014-04-09201404110118AMND
2014-04-10201404110110AMND
2014-04-10201404110099AMND
2014-04-10201404110070AMND
2014-07-16201407160902AMND
2014-07-16201407160886AMND
2014-10-15201410150577AMND
2014-10-15201410150597AMND
2014-10-15201410150581AMND
2014-10-15201410150579AMND
2014-10-15201410150591AMND
2014-10-15201410150595AMND
2014-10-15201410150585AMND
2014-10-15201410150599AMND
2014-10-15201410150583AMND
2014-10-15201410150593AMND
2019-04-259590-039-08403.50 ppt
2019-04-259590-040-09052.70 ppt
2019-05-089590-039-08403.50 ppt
2019-05-089590-040-09052.70 ppt
2019-08-220006-040-08502.00 ppt
2019-08-220006-007-0830ND
2019-08-220006-009-0920ND
2019-08-220006-012-0845ND
2019-08-220006-013-0900ND
2019-08-220006-008-0915ND
2019-08-220006-014-0845ND
2019-08-220006-016-0930ND
2019-08-220006-019-0820ND
2019-08-220006-025-0835ND
2019-08-220006-006-1045ND
2019-08-220006-039-10104.30 ppt
2019-08-220006-002-10452.50 ppt
2019-11-079590-002-10002.60 ppt
2019-11-079590-006-1125ND
2019-11-079590-007-1150ND
2019-11-079590-008-0820ND
2019-11-079590-040-0905ND
2019-11-079590-009-0830ND
2019-11-079590-012-0950ND
2019-11-079590-013-1001ND
2019-11-079590-014-0940ND
2019-11-079590-016-0845ND
2019-11-079590-019-0930ND
2019-11-079590-025-0930ND
2019-11-079590-039-09453.50 ppt