Know Your Environment. Protect Your Health.

Perfluoroundecanoic acid (PFUnA)

San Antonio Water Company

Perfluoroundecanoic acid (PFUnA) is a member of a group of perfluorinated chemicals used in many consumer products. PFUnA 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.

 

16

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
2019ND90ND
2020ND30ND
2021N/A00N/A
2022ND10ND
2023ND30ND

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.006 ppt

The EWG Health Guideline of 0.006 ppt for PFUnA was based the EPA's recommended application of the toxicity value for PFDA published in the Integrated Risk Information System’s toxicological review. This health guideline protects against harm to the immune system and harm to fetal growth and child development.

ppt = parts per trillion

All test results

Date Lab ID Result
2019-06-11CA3610085_004_004-201906110836ND
2019-06-11CA3610085_011_011-201906110842ND
2019-06-11CA3610085_003_003-201906110854ND
2019-09-03CA3610085_011_011-201909030950ND
2019-09-03CA3610085_003_003-201909030939ND
2019-09-03CA3610085_004_004-201909030946ND
2019-12-11CA3610085_004_004-201912111040ND
2019-12-11CA3610085_003_003-201912111030ND
2019-12-11CA3610085_011_011-201912111037ND
2020-03-03CA3610085_011_011-202003031020ND
2020-03-03CA3610085_004_004-202003030950ND
2020-03-03CA3610085_003_003-202003031000ND
2022-11-29CA3610085_021_021-202211290922ND
2023-04-20CA3610085_021_021-202304201200ND
2023-07-11CA3610085_021_021-202307111200ND
2023-10-17CA3610085_021_021-202310171045ND