Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Perfluorohexane sulfonate (PFHXS)

California Water Service (CWS) - Visalia

Perfluorohexane sulfonate is a member of a group of perfluorinated chemicals used in many consumer products. 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

 

158

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.15 ppt792ND - 92.0 ppt
2015ND60ND
2016ND10ND
2017N/A00N/A
201844.0 ppt1144.0 ppt
20192.41 ppt713ND - 77.0 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 perfluorohexane sulfonate 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
2014-04-01A4C1081-09AND
2014-04-01A4C1081-01AND
2014-04-03A4C1081-13AND
2014-04-07A4C1253-05AND
2014-04-08A4C1253-01AND
2014-04-13A4C1476-13AND
2014-04-13A4C1476-01AND
2014-04-15A4C1476-09AND
2014-04-22A4C1796-05AND
2014-04-24A4C1796-01AND
2014-04-25A4C1796-09AND
2014-05-07A4C2018-01AND
2014-05-08A4C2018-05AND
2014-05-08A4C2018-21AND
2014-05-09A4C2018-25AND
2014-05-12A4D0061-17AND
2014-05-12A4D0061-05AND
2014-05-12A4D0061-13AND
2014-05-13A4D0061-01AND
2014-05-14A4D0061-09AND
2014-05-19A4D1188-05AND
2014-05-19A4D1188-13AND
2014-05-22A4D1188-09AND
2014-06-02A4D1544-01AND
2014-06-05A4D1544-09AND
2014-06-10A4E0756-01AND
2014-06-10A4E1527-05AND
2014-06-11A4E1527-01AND
2014-06-11A4E1527-03AND
2014-06-11A4F0325-01A92.0 ppt
2014-06-11A4D1544-13AND
2014-06-12A4E0756-05AND
2014-06-12A4E0756-13AND
2014-06-13A4E0756-09AND
2014-06-16A4E2267-01AND
2014-06-17A4E2264-01AND
2014-06-18A4E2262-01AND
2014-06-19A4E2265-01AND
2014-06-23A4F1344-01AND
2014-06-24A4F1344-05AND
2014-07-28A4G1966-01AND
2014-10-06A4I2143-01AND
2014-10-13A4J0085-01AND
2014-10-14A4J0086-01AND
2014-10-15A4J0088-01AND
2014-10-19A4J1139-01AND
2014-10-20A4J1142-01AND
2014-10-26A4J1756-01AND
2014-10-26A4J1758-01AND
2014-10-27A4J1140-01AND
2014-11-01A4J2319-01AND
2014-11-02A4J2327-01AND
2014-11-03A4J2325-01AND
2014-11-03A4J2329-01AND
2014-11-04A4J2323-01AND
2014-11-04A4J2321-01AND
2014-11-05A4J2330-01AND
2014-11-09A4J2695-01AND
2014-11-10A4J2697-01AND
2014-11-10A4J2699-01AND
2014-11-11A4J2692-01AND
2014-11-12A4J2693-01AND
2014-11-16A4K0480-01AND
2014-11-16A4K0484-01AND
2014-11-18A4K0485-01AND
2014-11-20A4K0483-01AND
2014-11-30A4K1839-01AND
2014-12-01A4K1842-01AND
2014-12-02A4K1841-01AND
2014-12-08A4K2207-01AND
2014-12-08A4K2083-01AND
2014-12-08A4K2085-01AND
2014-12-09A4K2214-01AND
2014-12-09A4K2212-01AND
2014-12-09A4K2208-01AND
2014-12-10A4K2211-01AND
2014-12-11A4K2209-01AND
2014-12-12A4K2210-01AND
2014-12-22A4L0701-01A78.0 ppt
2015-04-16201504170416AMND
2015-04-16201504170370AMND
2015-04-23201504240287AMND
2015-07-06201507070576AMND
2015-12-16201512170416AMND
2015-12-20201512230708AMND
2016-01-12201601130621AMND
2018-12-289590-087-095544.0 ppt
2019-06-285810-087-162545.0 ppt
2019-09-185810-087-111677.0 ppt
2019-11-155810-087-112049.0 ppt
2019-12-025810-026-1500ND
2019-12-025810-028-1430ND
2019-12-025810-040-1020ND
2019-12-025810-045-1035ND
2019-12-025810-065-0930ND
2019-12-025810-066-0935ND
2019-12-025810-092-1325ND
2019-12-025810-124-1030ND
2019-12-035810-027-1315ND
2019-12-035810-069-1420ND
2019-12-035810-094-1200ND
2019-12-035810-132-1320ND
2019-12-035810-147-1205ND
2019-12-045810-067-1345ND
2019-12-095810-015-0855ND
2019-12-095810-024-0925ND
2019-12-095810-036-0940ND
2019-12-095810-054-1020ND
2019-12-095810-058-1055ND
2019-12-095810-090-0805ND
2019-12-095810-179-1210ND
2019-12-105810-018-1132ND
2019-12-105810-030-1030ND
2019-12-105810-048-0953ND
2019-12-105810-056-1030ND
2019-12-105810-057-0845ND
2019-12-105810-081-1100ND
2019-12-105810-093-0825ND
2019-12-105810-118-0950ND
2019-12-115810-014-1224ND
2019-12-115810-029-0950ND
2019-12-115810-044-1630ND
2019-12-115810-055-0923ND
2019-12-115810-089-1245ND
2019-12-115810-142-1222ND
2019-12-115810-154-0915ND
2019-12-115810-155-0920ND
2019-12-115810-159-1124ND
2019-12-135810-010-0950ND
2019-12-135810-061-0915ND
2019-12-135810-098-0845ND
2019-12-145810-035-0825ND
2019-12-145810-064-1300ND
2019-12-165810-023-1520ND
2019-12-165810-046-1345ND
2019-12-165810-070-1612ND
2019-12-165810-136-1524ND
2019-12-165810-158-0945ND
2019-12-165810-178-1045ND
2019-12-175810-037-0935ND
2019-12-175810-047-1005ND
2019-12-175810-080-1500ND
2019-12-175810-119-1000ND
2019-12-175810-166-0915ND
2019-12-195810-003-1133ND
2019-12-195810-167-1520ND
2019-12-195810-182-1338ND
2019-12-195810-185-1455ND
2019-12-215810-049-1250ND
2019-12-215810-091-1245ND
2019-12-225810-031-1500ND
2019-12-225810-060-0840ND
2019-12-225810-128-1450ND
2019-12-265810-053-0855ND
2019-12-265810-059-0955ND
2019-12-265810-156-0815ND
2019-12-265810-161-0820ND
2019-12-305810-043-1020ND