Contaminant · PFAS
PFTA in drinking water
Perfluorotetradecanoic acid, a long-chain PFAS.
What the rules say
PFTA has no federal limit or EPA health reference value.
Across the country
EPA tested 10,309 water systems for PFTA and found it in 0. Half of the systems that found it measured less than —, and one in ten measured more than —.
EPA's final UCMR 5 occurrence file contains 66,604 PFTA results from 10,309 systems. 0 results were at or above the minimum reporting level, across 0 systems. Among detections, the median was — and the 90th percentile was —.
Systems with the highest recorded PFTA results
No system in this dataset has a reported detection or exceedance for this contaminant.
Filters and testing
NSF/ANSI 53 or 58 with a PFAS reduction claim
A standard number by itself is not a contaminant claim. Check the product's current certification listing and performance data sheet for PFTA or the specific contaminant you want to reduce. A utility-level record is not a test of your own faucet.