Know Your Environment. Protect Your Health.
EWG Home Skin Deep Database Healthy Living App EWG Verified Open menu

EWG’s Tap
Water Database
Water Contamination Water Filter Guide Consumer Resources News & Insights
TAKE ACTION

Perfluorotridecanoic acid (PFTrDA)

California Domestic Water Company

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

MORE ABOUT THIS CONTAMINANT

 

94

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
2020ND240ND
2021ND360ND
2022ND340ND
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 0.006 ppt for PFTrDA was based on 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
2020-03-11CA1910199_020_020-202003111000ND
2020-03-11CA1910199_008_008-202003110910ND
2020-03-11CA1910199_007_007-202003110940ND
2020-03-11CA1910199_009_009-202003111020ND
2020-03-11CA1910199_005_005-202003110850ND
2020-03-11CA1910199_006_006-202003110925ND
2020-03-11CA1910199_014_014-202003110900ND
2020-05-21CA1910199_005_005-202005210938ND
2020-05-21CA1910199_007_007-202005211018ND
2020-05-21CA1910199_014_014-202005211000ND
2020-05-21CA1910199_006_006-202005211012ND
2020-05-21CA1910199_021_021-202005210919ND
2020-05-21CA1910199_009_009-202005211038ND
2020-05-21CA1910199_020_020-202005210927ND
2020-05-21CA1910199_008_008-202005210909ND
2020-12-14CA1910199_006_006-202012140840ND
2020-12-14CA1910199_022_016-202012140810ND
2020-12-14CA1910199_008_008-202012140910ND
2020-12-14CA1910199_020_020-202012140830ND
2020-12-14CA1910199_021_021-202012140855ND
2020-12-14CA1910199_014_014-202012140805ND
2020-12-14CA1910199_005_005-202012140825ND
2020-12-14CA1910199_007_007-202012140845ND
2020-12-14CA1910199_009_009-202012140935ND
2021-03-04CA1910199_008_008-202103040855ND
2021-03-04CA1910199_020_020-202103040830ND
2021-03-04CA1910199_021_021-202103040830ND
2021-03-04CA1910199_014_014-202103040800ND
2021-03-04CA1910199_009_009-202103040920ND
2021-03-04CA1910199_006_006-202103040840ND
2021-03-04CA1910199_007_007-202103040845ND
2021-03-04CA1910199_005_005-202103040815ND
2021-03-04CA1910199_022_016-202103040810ND
2021-05-27CA1910199_009_009-202105270925ND
2021-05-27CA1910199_021_021-202105270855ND
2021-05-27CA1910199_006_006-202105270835ND
2021-05-27CA1910199_020_020-202105270825ND
2021-05-27CA1910199_005_005-202105270815ND
2021-05-27CA1910199_014_014-202105270815ND
2021-05-27CA1910199_008_008-202105270905ND
2021-05-27CA1910199_007_007-202105270845ND
2021-07-06CA1910199_020_020-202107060850ND
2021-07-06CA1910199_014_014-202107060810ND
2021-07-06CA1910199_006_006-202107060920ND
2021-07-06CA1910199_005_005-202107060825ND
2021-07-06CA1910199_008_008-202107060955ND
2021-07-06CA1910199_007_007-202107060930ND
2021-07-06CA1910199_009_009-202107061035ND
2021-07-06CA1910199_022_016-202107060820ND
2021-07-06CA1910199_021_021-202107060910ND
2021-10-13CA1910199_006_006-202110130955ND
2021-10-13CA1910199_022_016-202110131105ND
2021-10-13CA1910199_009_009-202110131125ND
2021-10-13CA1910199_021_021-202110130925ND
2021-10-13CA1910199_008_008-202110131035ND
2021-10-13CA1910199_020_020-202110130915ND
2021-10-13CA1910199_005_005-202110130850ND
2021-10-13CA1910199_014_014-202110130830ND
2021-10-27CA1910199_007_007-202110271310ND
2021-12-06CA1910199_007_007-20211206NULND
2022-01-19CA1910199_008_008-202201191140ND
2022-01-19CA1910199_021_021-202201191110ND
2022-01-19CA1910199_007_007-202201191130ND
2022-01-19CA1910199_009_009-202201191205ND
2022-01-19CA1910199_014_014-202201191050ND
2022-01-19CA1910199_006_006-202201191120ND
2022-01-19CA1910199_020_020-202201191100ND
2022-01-19CA1910199_022_016-202201191045ND
2022-01-19CA1910199_005_005-202201191055ND
2022-04-18CA1910199_021_021-202204180940ND
2022-04-18CA1910199_007_007-202204180905ND
2022-04-18CA1910199_014_014-202204180820ND
2022-04-18CA1910199_008_008-202204180925ND
2022-04-18CA1910199_009_009-202204181000ND
2022-04-18CA1910199_022_016-202204180815ND
2022-04-18CA1910199_020_020-202204180850ND
2022-04-18CA1910199_005_005-202204180840ND
2022-06-22CA1910199_006_006-202206221205ND
2022-07-15CA1910199_008_008-202207150950ND
2022-07-15CA1910199_021_021-202207150905ND
2022-07-15CA1910199_006_006-202207150915ND
2022-07-15CA1910199_005_005-202207150835ND
2022-07-15CA1910199_020_020-202207150845ND
2022-07-15CA1910199_007_007-202207150925ND
2022-07-15CA1910199_014_014-202207150805ND
2022-10-06CA1910199_009_009-202210061040ND
2022-10-06CA1910199_005_005-202210060905ND
2022-10-06CA1910199_022_016-202210060915ND
2022-10-06CA1910199_021_021-202210060830ND
2022-10-06CA1910199_014_014-202210060920ND
2022-10-06CA1910199_020_020-202210060850ND
2022-10-06CA1910199_006_006-202210060940ND
2022-10-06CA1910199_008_008-202210061010ND
2022-10-06CA1910199_007_007-202210060955ND