Perfluoropentane sulfonic acid (PFPeS)
Apple Valley
Perfluoropentane sulfonic acid (PFPeS) is a member of a group of perfluorinated chemicals used in many consumer products. PFPeS 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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 21 | 0 | ND |
| 2022 | 0.369 ppt | 29 | 17 | ND - 1.000 ppt |
| 2023 | 0.355 ppt | 63 | 37 | ND - 1.10 ppt |
| 2024 | ND | 1 | 0 | ND |
ppt = parts per trillion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 1 ppt
The EWG Health Guideline of 1 ppt for PFPeS was defined by EWG as 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.
ppt = parts per trillion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2021-04-21 | 21D1187-01 | ND |
| 2021-04-21 | 21D1187-02 | ND |
| 2021-04-21 | 21D1187-03 | ND |
| 2021-04-21 | 21D1187-04 | ND |
| 2021-04-21 | 21D1187-05 | ND |
| 2021-04-21 | 21D1187-06 | ND |
| 2021-05-17 | 21E1082-01 | ND |
| 2021-05-17 | 21E1082-03 | ND |
| 2021-05-17 | 21E1082-04 | ND |
| 2021-05-17 | 21E1082-06 | ND |
| 2021-08-31 | 21H2581-01 | ND |
| 2021-08-31 | 21H2581-02 | ND |
| 2021-08-31 | 21H2581-03 | ND |
| 2021-08-31 | 21H2581-04 | ND |
| 2021-08-31 | 21H2581-05 | ND |
| 2021-08-31 | 21H2581-06 | ND |
| 2021-08-31 | 21H2581-07 | ND |
| 2021-08-31 | 21H2581-08 | ND |
| 2021-11-30 | 21K1451-01 | ND |
| 2021-11-30 | 21K1451-02 | ND |
| 2021-11-30 | 21K1451-03 | ND |
| 2022-09-28 | 22I2209-02 | 0.380 ppt |
| 2022-09-28 | 22I2209-03 | ND |
| 2022-09-28 | 22I2209-04 | ND |
| 2022-09-28 | 22I2209-08 | ND |
| 2022-09-28 | 22I2209-09 | 0.400 ppt |
| 2022-09-28 | 22I2209-10 | 0.610 ppt |
| 2022-09-28 | 22I2209-12 | 0.540 ppt |
| 2022-09-28 | 22I2209-13 | 0.610 ppt |
| 2022-09-28 | 22I2209-14 | 0.620 ppt |
| 2022-09-28 | 22I2209-15 | 0.460 ppt |
| 2022-09-28 | 22I2209-16 | ND |
| 2022-09-28 | 22I2209-17 | ND |
| 2022-09-28 | 22I2209-18 | 0.960 ppt |
| 2022-09-28 | 22I2209-19 | ND |
| 2022-09-28 | 22I2209-21 | 1.000 ppt |
| 2022-12-08 | 22L0340-01 | 0.400 ppt |
| 2022-12-08 | 22L0340-02 | 0.880 ppt |
| 2022-12-08 | 22L0340-03 | ND |
| 2022-12-08 | 22L0340-04 | ND |
| 2022-12-08 | 22L0340-05 | ND |
| 2022-12-08 | 22L0340-06 | 0.740 ppt |
| 2022-12-08 | 22L0340-07 | ND |
| 2022-12-08 | 22L0340-08 | 0.640 ppt |
| 2022-12-08 | 22L0340-09 | 0.430 ppt |
| 2022-12-08 | 22L0340-10 | 0.840 ppt |
| 2022-12-08 | 22L0340-11 | 0.630 ppt |
| 2022-12-08 | 22L0340-12 | ND |
| 2022-12-08 | 22L0340-13 | ND |
| 2022-12-08 | 22L0340-14 | 0.550 ppt |
| 2023-01-11 | 23A0323-01 | ND |
| 2023-01-11 | 23A0323-02 | 0.690 ppt |
| 2023-01-11 | 23A0323-03 | ND |
| 2023-01-11 | 23A0323-04 | 0.480 ppt |
| 2023-01-11 | 23A0323-05 | ND |
| 2023-01-11 | 23A0323-06 | 0.810 ppt |
| 2023-01-11 | 23A0323-07 | ND |
| 2023-01-11 | 23A0323-08 | 0.690 ppt |
| 2023-01-11 | 23A0323-09 | 0.490 ppt |
| 2023-01-11 | 23A0323-10 | 0.720 ppt |
| 2023-01-11 | 23A0323-11 | ND |
| 2023-01-11 | 23A0323-12 | 0.590 ppt |
| 2023-01-11 | 23A0323-14 | ND |
| 2023-03-24 | 23C1229-01 | ND |
| 2023-03-24 | 23C1229-02 | 0.430 ppt |
| 2023-04-19 | 23D1147-01 | 0.410 ppt |
| 2023-04-19 | 23D1147-02 | 0.630 ppt |
| 2023-04-19 | 23D1147-03 | ND |
| 2023-04-19 | 23D1147-04 | ND |
| 2023-04-19 | 23D1147-05 | ND |
| 2023-04-19 | 23D1147-06 | 0.590 ppt |
| 2023-04-19 | 23D1147-07 | ND |
| 2023-04-19 | 23D1147-08 | 0.620 ppt |
| 2023-04-19 | 23D1147-09 | 0.640 ppt |
| 2023-04-19 | 23D1147-10 | 0.780 ppt |
| 2023-04-19 | 23D1147-11 | 0.520 ppt |
| 2023-04-19 | 23D1147-12 | ND |
| 2023-04-19 | 23D1147-13 | ND |
| 2023-04-19 | 23D1147-14 | 0.620 ppt |
| 2023-04-19 | 23D1147-15 | 0.460 ppt |
| 2023-05-24 | 23E2662-01 | ND |
| 2023-05-24 | 23E2662-02 | 0.410 ppt |
| 2023-06-20 | 23F1597-01 | ND |
| 2023-08-23 | 23H2420-01 | ND |
| 2023-08-23 | 23H2420-02 | 0.940 ppt |
| 2023-08-23 | 23H2420-03 | 0.450 ppt |
| 2023-08-23 | 23H2420-04 | 0.900 ppt |
| 2023-08-23 | 23H2420-05 | 0.620 ppt |
| 2023-08-23 | 23H2420-06 | 0.380 ppt |
| 2023-08-23 | 23H2420-07 | 0.580 ppt |
| 2023-08-23 | 23H2420-08 | 0.510 ppt |
| 2023-08-23 | 23H2420-09 | 0.490 ppt |
| 2023-08-23 | 23H2420-10 | 0.420 ppt |
| 2023-08-24 | 23H2549-01 | ND |
| 2023-08-24 | 23H2549-02 | ND |
| 2023-08-24 | 23H2549-03 | ND |
| 2023-08-24 | 23H2549-04 | ND |
| 2023-08-24 | 23H2549-05 | ND |
| 2023-10-23 | 23J1144-01 | 0.590 ppt |
| 2023-10-23 | 23J1144-02 | 1.10 ppt |
| 2023-10-23 | 23J1144-03 | ND |
| 2023-10-23 | 23J1144-04 | 0.430 ppt |
| 2023-10-23 | 23J1144-05 | ND |
| 2023-10-23 | 23J1144-06 | 0.900 ppt |
| 2023-10-23 | 23J1144-07 | ND |
| 2023-10-23 | 23J1144-08 | 0.640 ppt |
| 2023-10-23 | 23J1144-09 | 0.460 ppt |
| 2023-10-23 | 23J1144-10 | 0.840 ppt |
| 2023-10-23 | 23J1144-11 | 0.560 ppt |
| 2023-10-23 | 23J1144-12 | ND |
| 2023-10-23 | 23J1144-13 | ND |
| 2023-10-23 | 23J1144-14 | 0.520 ppt |
| 2023-10-23 | 23J1144-15 | 0.460 ppt |
| 2024-04-17 | 32401112001 | ND |