Perfluorononanoic acid (PFNA)
Coast Springs - Cal. Water Service (puc)
Perfluorononanoic acid, otherwise known as PFNA or C9, is a PFC similar in function and use to PFOA. These chemicals were used in the production of non-stick, stain repellent and chemically inert coatings. 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 |
|---|---|---|---|---|
| 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 | ND | 11 | 0 | ND |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 19 | 0 | ND |
ppt = parts per trillion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.006 ppt
The EWG Health Guideline of 6 ppt for perfluorononanoic acid was defined by EPA recommended application of the toxicity value for PFDA published in the Integrated Risk Information System’s toxicological review . This health guideline harm to the immune system and harm to fetal growth and child development.
EPA Maximum Contaminant
Level (MCL): 10 ppt
ppt = parts per trillion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2020-04-02 | CA2110007_004_004-202004021230 | ND |
| 2020-04-02 | CA2110007_002_002-202004021130 | ND |
| 2020-04-02 | CA2110007_008_008-202004021210 | ND |
| 2020-06-02 | CA2110007_015_015-202006021115 | ND |
| 2020-06-02 | CA2110007_001_001-202006021100 | ND |
| 2020-06-22 | CA2110007_016_016-202006221145 | ND |
| 2020-06-23 | CA2110007_005_005-202006231115 | ND |
| 2020-06-24 | CA2110007_003_003-202006241135 | ND |
| 2020-09-22 | CA2110007_010_010-202009221130 | ND |
| 2020-09-22 | CA2110007_007_007-202009221100 | ND |
| 2020-10-05 | CA2110007_006_006-202010050730 | ND |
| 2023-03-22 | CA2110007_015_015-202303221030 | ND |
| 2023-03-22 | CA2110007_015_015-202303221020 | ND |
| 2023-06-15 | CA2110007_001_001-202306151030 | ND |
| 2023-06-19 | CA2110007_016_016-202306191000 | ND |
| 2023-06-19 | CA2110007_016_016-202306191000 | ND |
| 2023-06-19 | CA2110007_005_005-202306190930 | ND |
| 2023-06-21 | CA2110007_007_007-202306210940 | ND |
| 2023-06-21 | CA2110007_007_007-202306210940 | ND |
| 2023-06-21 | CA2110007_006_006-202306210850 | ND |
| 2023-06-21 | CA2110007_006_006-202306210850 | ND |
| 2023-06-22 | CA2110007_008_008-202306221135 | ND |
| 2023-06-22 | CA2110007_008_008-202306221120 | ND |
| 2023-06-27 | CA2110007_004_004-202306270930 | ND |
| 2023-06-27 | CA2110007_004_004-202306270930 | ND |
| 2023-06-28 | CA2110007_002_002-202306280945 | ND |
| 2023-06-28 | CA2110007_002_002-202306280945 | ND |
| 2023-06-29 | CA2110007_005_005-202306291200 | ND |
| 2023-07-18 | CA2110007_010_010-202307181145 | ND |
| 2023-07-18 | CA2110007_010_010-202307181150 | ND |