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EWG's Tap Water Database — 2019 UPDATE

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Perfluorononanoic acid (PFNA)

City of Lancaster

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

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND20ND
2015ND20ND
2016N/A00N/A
2017N/A00N/A

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.

ppt = parts per trillion

All test results

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

Date Lab ID Result
2014-04-08Q1410915005ND
2014-04-08Q1410915009ND
2014-04-08Q1410915001ND
2014-07-15Q1428070005ND
2014-07-15Q1428070009ND
2014-07-15Q1428070001ND
2014-10-21Q1453299005ND
2014-10-21Q1453299009ND
2014-10-21Q1453299001ND
2015-01-13Q1500512005ND
2015-01-13Q1500512009ND
2015-01-13Q1500512001ND