Perfluorohexane sulfonate (PFHXS)
Ridgewood Water
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.
274
Samples
0
Samples exceeding legal limit (MCL)
243
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 3.58 ppt | 82 | 79 | ND - 12.2 ppt |
| 2022 | 3.66 ppt | 86 | 81 | ND - 12.4 ppt |
| 2023 | 2.85 ppt | 99 | 78 | ND - 10.8 ppt |
| 2024 | 2.76 ppt | 7 | 5 | ND - 4.50 ppt |
ppt = parts per trillion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.001 ppt
The EWG Health Guideline of 0.001 ppt for perfluorohexane sulfonate was defined by EPA's toxicity value published in the Integrated Risk Information System's toxicological review. This health guideline harm to the developing immune system.
EPA Maximum Contaminant
Level (MCL): 10 ppt
ppt = parts per trillion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2021-01-04 | 1010022-01 | 2.45 ppt |
| 2021-01-04 | 1010022-07 | 3.68 ppt |
| 2021-01-04 | 1010022-05 | 3.12 ppt |
| 2021-01-04 | 1010022-09 | 2.41 ppt |
| 2021-01-04 | 1010022-03 | 3.38 ppt |
| 2021-01-05 | 1010094-05 | 3.23 ppt |
| 2021-01-05 | 1010094-01 | 2.22 ppt |
| 2021-01-05 | 1010094-07 | 2.66 ppt |
| 2021-01-05 | 1010094-09 | 3.07 ppt |
| 2021-01-05 | 1010094-03 | 3.63 ppt |
| 2021-01-06 | 1010149-09 | 2.05 ppt |
| 2021-01-06 | 1010149-07 | 2.30 ppt |
| 2021-01-06 | 1010149-03 | 4.01 ppt |
| 2021-01-06 | 1010149-05 | 3.75 ppt |
| 2021-01-06 | 1010149-01 | ND |
| 2021-01-07 | 1010299-01 | 12.2 ppt |
| 2021-04-02 | 1040076-01 | 2.73 ppt |
| 2021-04-02 | 1040076-03 | 3.57 ppt |
| 2021-04-02 | 1040076-05 | 4.31 ppt |
| 2021-04-02 | 1040076-07 | 2.30 ppt |
| 2021-04-02 | 1040076-09 | 3.21 ppt |
| 2021-04-02 | 1040076-11 | 3.36 ppt |
| 2021-04-07 | 1040266-05 | 3.45 ppt |
| 2021-04-07 | 1040266-03 | 3.39 ppt |
| 2021-04-07 | 1040266-07 | 3.06 ppt |
| 2021-04-07 | 1040266-01 | 9.75 ppt |
| 2021-04-08 | 1040373-05 | 3.90 ppt |
| 2021-04-08 | 1040373-07 | 3.43 ppt |
| 2021-04-08 | 1040373-03 | 4.91 ppt |
| 2021-04-08 | 1040373-01 | 4.40 ppt |
| 2021-04-08 | 1040373-09 | 5.99 ppt |
| 2021-04-09 | 1040497-01 | ND |
| 2021-04-13 | 1040731-01 | 2.10 ppt |
| 2021-04-21 | 1041043-01 | 3.10 ppt |
| 2021-04-21 | 1041043-05 | 3.03 ppt |
| 2021-04-21 | 1041043-03 | 3.08 ppt |
| 2021-05-20 | 1051066-01 | 5.01 ppt |
| 2021-05-24 | 1051088-01 | 7.01 ppt |
| 2021-06-07 | 1060299-01 | 3.75 ppt |
| 2021-07-06 | 1070177-01 | 4.81 ppt |
| 2021-07-06 | 1070177-04 | 2.90 ppt |
| 2021-07-06 | 1070177-03 | 3.69 ppt |
| 2021-07-06 | 1070177-05 | 2.18 ppt |
| 2021-07-06 | 1070177-06 | 2.66 ppt |
| 2021-07-06 | 1070177-07 | 2.95 ppt |
| 2021-07-06 | 1070177-02 | 4.78 ppt |
| 2021-07-07 | 1070238-01 | 3.39 ppt |
| 2021-07-07 | 1070238-11 | 2.26 ppt |
| 2021-07-07 | 1070238-03 | 2.98 ppt |
| 2021-07-07 | 1070238-05 | 3.36 ppt |
| 2021-07-07 | 1070238-07 | 3.01 ppt |
| 2021-07-07 | 1070238-09 | 3.38 ppt |
| 2021-07-08 | 1070341-01 | 3.69 ppt |
| 2021-07-08 | 1070341-03 | 2.93 ppt |
| 2021-07-08 | 1070341-05 | 2.66 ppt |
| 2021-07-08 | 1070341-07 | 2.21 ppt |
| 2021-07-08 | 1070341-09 | 7.07 ppt |
| 2021-07-08 | 1070341-11 | 1.80 ppt |
| 2021-07-08 | 1070341-13 | ND |
| 2021-07-14 | 1070663-02 | 4.68 ppt |
| 2021-07-14 | 1070663-01 | 5.60 ppt |
| 2021-10-06 | 1100220-01 | 5.09 ppt |
| 2021-10-06 | 1100220-02 | 4.01 ppt |
| 2021-10-06 | 1100220-03 | 3.59 ppt |
| 2021-10-06 | 1100220-05 | 3.22 ppt |
| 2021-10-06 | 1100220-04 | 4.76 ppt |
| 2021-10-07 | 1100347-01 | 3.94 ppt |
| 2021-10-07 | 1100347-05 | 2.47 ppt |
| 2021-10-07 | 1100347-02 | 3.72 ppt |
| 2021-10-07 | 1100347-03 | 4.97 ppt |
| 2021-10-07 | 1100347-04 | 3.34 ppt |
| 2021-10-07 | 1100347-06 | 3.69 ppt |
| 2021-10-12 | 1100575-05 | 2.86 ppt |
| 2021-10-12 | 1100575-04 | 5.06 ppt |
| 2021-10-12 | 1100575-03 | 2.51 ppt |
| 2021-10-12 | 1100575-02 | 2.94 ppt |
| 2021-10-12 | 1100575-01 | 3.07 ppt |
| 2021-10-13 | 1100640-03 | 2.81 ppt |
| 2021-10-13 | 1100640-01 | 5.29 ppt |
| 2021-10-13 | 1100640-07 | 5.95 ppt |
| 2021-10-13 | 1100640-05 | 2.35 ppt |
| 2021-10-13 | 1100640-09 | 1.87 ppt |
| 2022-01-24 | 2011134-06 | 4.73 ppt |
| 2022-01-24 | 2011134-05 | 5.89 ppt |
| 2022-01-24 | 2011134-04 | 2.82 ppt |
| 2022-01-24 | 2011134-03 | 3.68 ppt |
| 2022-01-24 | 2011134-02 | 3.72 ppt |
| 2022-01-24 | 2011134-07 | 5.69 ppt |
| 2022-01-24 | 2011134-09 | 4.23 ppt |
| 2022-01-24 | 2011134-08 | 4.99 ppt |
| 2022-01-25 | 2011134-11 | 4.70 ppt |
| 2022-01-25 | 2011134-10 | 3.46 ppt |
| 2022-01-25 | 2011134-12 | 3.93 ppt |
| 2022-01-25 | 2011134-13 | 4.42 ppt |
| 2022-01-25 | 2011134-14 | 3.27 ppt |
| 2022-01-31 | 2020240-01 | 3.48 ppt |
| 2022-02-01 | 2020240-05 | 3.95 ppt |
| 2022-02-01 | 2020240-03 | 3.88 ppt |
| 2022-04-04 | 2040088-01 | 1.96 ppt |
| 2022-04-04 | 2040088-05 | 2.74 ppt |
| 2022-04-04 | 2040088-03 | 3.28 ppt |
| 2022-04-04 | 2040088-07 | 2.87 ppt |
| 2022-04-04 | 2040088-11 | 3.01 ppt |
| 2022-04-04 | 2040088-13 | 2.57 ppt |
| 2022-04-04 | 2040088-15 | 2.36 ppt |
| 2022-04-04 | 2040088-09 | 2.40 ppt |
| 2022-04-04 | 2040088-17 | ND |
| 2022-04-05 | 2040158-11 | 3.42 ppt |
| 2022-04-05 | 2040158-13 | 2.71 ppt |
| 2022-04-05 | 2040158-07 | 2.21 ppt |
| 2022-04-05 | 2040158-05 | 2.73 ppt |
| 2022-04-05 | 2040158-09 | 3.19 ppt |
| 2022-04-05 | 2040158-03 | 3.38 ppt |
| 2022-04-05 | 2040158-01 | 2.26 ppt |
| 2022-04-21 | 2041017-03 | 2.14 ppt |
| 2022-04-21 | 2041017-01 | 3.48 ppt |
| 2022-05-11 | 2050540-01 | 2.86 ppt |
| 2022-05-19 | 2051066-01 | 3.41 ppt |
| 2022-05-27 | 2051433-02 | ND |
| 2022-06-03 | 2060153-01 | 2.65 ppt |
| 2022-06-30 | 2061467-01 | 12.4 ppt |
| 2022-07-07 | 2070304-21 | 2.99 ppt |
| 2022-07-07 | 2070304-16 | 4.33 ppt |
| 2022-07-07 | 2070304-02 | 1.92 ppt |
| 2022-07-07 | 2070304-18 | 2.96 ppt |
| 2022-07-07 | 2070304-10 | 2.19 ppt |
| 2022-07-07 | 2070304-08 | 3.16 ppt |
| 2022-07-07 | 2070304-20 | 3.29 ppt |
| 2022-07-07 | 2070304-06 | 1.92 ppt |
| 2022-07-07 | 2070304-04 | 2.20 ppt |
| 2022-07-07 | 2070304-12 | 2.14 ppt |
| 2022-07-07 | 2070304-14 | 3.89 ppt |
| 2022-07-12 | 2070507-02 | 3.96 ppt |
| 2022-07-12 | 2070507-20 | 3.38 ppt |
| 2022-07-12 | 2070507-16 | 3.64 ppt |
| 2022-07-12 | 2070507-13 | 3.50 ppt |
| 2022-07-12 | 2070507-10 | 3.52 ppt |
| 2022-07-12 | 2070507-12 | 4.98 ppt |
| 2022-07-12 | 2070507-18 | 3.32 ppt |
| 2022-07-12 | 2070507-06 | 10.2 ppt |
| 2022-07-12 | 2070507-08 | 2.65 ppt |
| 2022-07-12 | 2070507-04 | ND |
| 2022-07-28 | 2071347-01 | 5.75 ppt |
| 2022-08-04 | 2080295-01 | 3.58 ppt |
| 2022-08-22 | 2081114-01 | 2.59 ppt |
| 2022-10-03 | 2100218-07 | 3.73 ppt |
| 2022-10-03 | 2100218-13 | 4.26 ppt |
| 2022-10-03 | 2100218-11 | 6.29 ppt |
| 2022-10-03 | 2100218-02 | ND |
| 2022-10-03 | 2100218-06 | 3.28 ppt |
| 2022-10-03 | 2100218-04 | ND |
| 2022-10-05 | 2100218-24 | 5.95 ppt |
| 2022-10-05 | 2100218-22 | 3.20 ppt |
| 2022-10-05 | 2100218-20 | 2.80 ppt |
| 2022-10-05 | 2100218-17 | 2.98 ppt |
| 2022-10-05 | 2100218-15 | 3.15 ppt |
| 2022-10-05 | 2100218-18 | 5.34 ppt |
| 2022-10-05 | 2100218-26 | 4.24 ppt |
| 2022-10-06 | 2100285-02 | 4.20 ppt |
| 2022-10-06 | 2100285-06 | 4.85 ppt |
| 2022-10-06 | 2100285-04 | 7.99 ppt |
| 2022-10-06 | 2100285-08 | 3.99 ppt |
| 2022-10-06 | 2100285-10 | 10.1 ppt |
| 2022-10-07 | 2100327-02 | 4.63 ppt |
| 2022-10-07 | 2100327-01 | 4.06 ppt |
| 2022-10-07 | 2100327-04 | 4.14 ppt |
| 2022-10-07 | 2100327-03 | 6.11 ppt |
| 2022-10-27 | 2101160-02 | 2.77 ppt |
| 2023-01-05 | 23A0191-02 | 2.96 ppt |
| 2023-01-05 | 23A0191-06 | ND |
| 2023-01-05 | 23A0191-04 | ND |
| 2023-01-06 | 23A0255-02 | 2.61 ppt |
| 2023-01-06 | 23A0255-04 | 3.05 ppt |
| 2023-01-10 | 23A0377-04 | 2.74 ppt |
| 2023-01-10 | 23A0377-02 | 2.20 ppt |
| 2023-01-11 | 23A0481-06 | 3.73 ppt |
| 2023-01-11 | 23A0481-04 | 3.46 ppt |
| 2023-01-11 | 23A0481-02 | 4.04 ppt |
| 2023-01-12 | 23A0590-02 | 4.22 ppt |
| 2023-02-08 | 23B0386-02 | 3.54 ppt |
| 2023-03-01 | 810-55195-1 | 4.90 ppt |
| 2023-03-01 | 810-55190-1 | 4.50 ppt |
| 2023-03-01 | 810-55193-1 | ND |
| 2023-03-01 | 810-55187-1 | ND |
| 2023-03-06 | 810-55544-1 | 3.00 ppt |
| 2023-03-06 | 810-55532-1 | 3.10 ppt |
| 2023-03-06 | 810-55536-1 | 4.70 ppt |
| 2023-03-06 | 810-55541-1 | ND |
| 2023-03-07 | 810-55775-1 | ND |
| 2023-03-07 | 810-55782-1 | ND |
| 2023-03-07 | 810-55771-1 | 4.00 ppt |
| 2023-03-13 | 810-56381-1 | ND |
| 2023-04-04 | 23D0125-06 | 2.47 ppt |
| 2023-04-04 | 23D0125-08 | 5.10 ppt |
| 2023-04-04 | 23D0125-12 | 2.45 ppt |
| 2023-04-04 | 23D0125-10 | 3.17 ppt |
| 2023-04-04 | 23D0125-04 | ND |
| 2023-04-04 | 23D0125-02 | ND |
| 2023-04-05 | 23D0218-10 | 5.28 ppt |
| 2023-04-05 | 23D0218-06 | 4.24 ppt |
| 2023-04-05 | 23D0218-08 | 2.97 ppt |
| 2023-04-05 | 23D0218-02 | 4.62 ppt |
| 2023-04-05 | 23D0218-04 | 2.65 ppt |
| 2023-04-26 | 23D1063-03 | 3.94 ppt |
| 2023-04-26 | 23D1063-01 | 3.75 ppt |
| 2023-05-03 | 23E0138-02 | 3.04 ppt |
| 2023-05-08 | 23E0359-02 | 4.20 ppt |
| 2023-05-11 | 23E0655-01 | 4.20 ppt |
| 2023-05-18 | 23E0895-04 | 3.75 ppt |
| 2023-05-18 | 23E0895-02 | 3.80 ppt |
| 2023-06-01 | 23F0007-02 | 10.8 ppt |
| 2023-06-05 | 23F0161-01 | 3.06 ppt |
| 2023-06-07 | 810-65673-1 | 3.70 ppt |
| 2023-06-07 | 810-65669-1 | ND |
| 2023-07-06 | 23G0230-10 | 2.46 ppt |
| 2023-07-06 | 23G0230-08 | 2.35 ppt |
| 2023-07-06 | 23G0230-02 | 3.35 ppt |
| 2023-07-06 | 23G0230-05 | ND |
| 2023-07-06 | 23G0230-04 | 2.34 ppt |
| 2023-07-07 | 23G0244-06 | 4.24 ppt |
| 2023-07-07 | 23G0244-08 | 2.92 ppt |
| 2023-07-07 | 23G0244-02 | 2.63 ppt |
| 2023-07-07 | 23G0244-04 | 3.04 ppt |
| 2023-07-07 | 23G0244-10 | ND |
| 2023-07-10 | 23G0353-06 | 1.95 ppt |
| 2023-07-10 | 23G0353-04 | 3.38 ppt |
| 2023-07-10 | 23G0353-02 | ND |
| 2023-07-10 | 23G0353-08 | 3.14 ppt |
| 2023-07-11 | 23G0432-12 | 3.45 ppt |
| 2023-07-11 | 23G0432-10 | 3.33 ppt |
| 2023-07-11 | 23G0432-04 | 2.72 ppt |
| 2023-07-11 | 23G0432-06 | 2.83 ppt |
| 2023-07-11 | 23G0432-08 | 2.94 ppt |
| 2023-07-11 | 23G0432-02 | 8.03 ppt |
| 2023-09-11 | 810-77230-1 | 3.50 ppt |
| 2023-09-11 | 810-77227-1 | 3.70 ppt |
| 2023-09-11 | 810-77225-1 | 3.00 ppt |
| 2023-09-11 | 810-77217-1 | ND |
| 2023-09-11 | 810-77218-1 | 3.90 ppt |
| 2023-09-12 | 810-77440-1 | 4.30 ppt |
| 2023-09-12 | 810-77460-1 | 3.50 ppt |
| 2023-09-12 | 810-77456-1 | 3.30 ppt |
| 2023-09-12 | 810-77447-1 | 3.90 ppt |
| 2023-09-12 | 810-77452-1 | ND |
| 2023-09-12 | 810-77394-1 | 3.80 ppt |
| 2023-09-12 | 810-77385-1 | ND |
| 2023-10-02 | 23J0043-12 | 3.31 ppt |
| 2023-10-02 | 23J0043-10 | 2.85 ppt |
| 2023-10-02 | 23J0043-08 | 3.84 ppt |
| 2023-10-02 | 23J0043-06 | 2.21 ppt |
| 2023-10-02 | 23J0043-04 | 2.63 ppt |
| 2023-10-02 | 23J0043-02 | 2.82 ppt |
| 2023-10-03 | 23J0147-20 | 3.35 ppt |
| 2023-10-03 | 23J0147-22 | 2.70 ppt |
| 2023-10-03 | 23J0147-18 | 2.77 ppt |
| 2023-10-03 | 23J0147-14 | 4.42 ppt |
| 2023-10-03 | 23J0147-12 | 3.70 ppt |
| 2023-10-03 | 23J0147-10 | 3.10 ppt |
| 2023-10-03 | 23J0147-24 | 2.78 ppt |
| 2023-10-03 | 23J0147-16 | 3.33 ppt |
| 2023-10-03 | 23J0147-04 | ND |
| 2023-10-03 | 23J0147-06 | 8.79 ppt |
| 2023-10-03 | 23J0147-08 | 2.38 ppt |
| 2023-10-03 | 23J0147-02 | ND |
| 2023-10-24 | 810-82725-1 | ND |
| 2023-11-14 | 810-85000-1 | 4.90 ppt |
| 2023-12-05 | 810-86835-1 | ND |
| 2024-03-05 | 810-96238-1 | 3.90 ppt |
| 2024-03-05 | 810-96240-1 | ND |
| 2024-04-30 | 810-102708-1 | 3.50 ppt |
| 2024-05-29 | 810-106396-1 | 3.60 ppt |
| 2024-05-29 | 810-106393-1 | 3.80 ppt |
| 2024-07-16 | 810-111963-1 | ND |
| 2024-09-26 | 810-121972-1 | 4.50 ppt |