Perfluoroundecanoic acid (PFUnA)
Cal-water Service Company - Marysville
Perfluoroundecanoic acid (PFUnA) is a member of a group of perfluorinated chemicals used in many consumer products. PFUnA 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.
150
Samples
0
Samples exceeding legal limit (MCL)
0
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 | ND | 15 | 0 | ND |
| 2021 | ND | 16 | 0 | ND |
| 2022 | ND | 40 | 0 | ND |
| 2023 | ND | 72 | 0 | ND |
| 2024 | ND | 7 | 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 0.006 ppt for PFUnA was based the EPA's recommended application of the toxicity value for PFDA published in the Integrated Risk Information System’s toxicological review. This health guideline protects against harm to the immune system and harm to fetal growth and child development.
ppt = parts per trillion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2020-04-20 | CA5810001_010_010-202004201415 | ND |
| 2020-04-21 | CA5810001_009_009-202004211404 | ND |
| 2020-05-05 | CA5810001_020_020-202005051345 | ND |
| 2020-05-05 | CA5810001_015_015-202005051340 | ND |
| 2020-05-12 | CA5810001_011_011-202005120924 | ND |
| 2020-05-12 | CA5810001_016_016-202005121130 | ND |
| 2020-05-12 | CA5810001_018_018-202005121137 | ND |
| 2020-05-12 | CA5810001_023_023-202005120926 | ND |
| 2020-06-19 | CA5810001_008_008-202006191035 | ND |
| 2020-10-19 | CA5810001_011_011-202010191430 | ND |
| 2020-10-19 | CA5810001_023_023-202010191430 | ND |
| 2020-10-20 | CA5810001_009_009-202010201015 | ND |
| 2020-10-22 | CA5810001_016_016-202010221015 | ND |
| 2020-10-22 | CA5810001_018_018-202010221015 | ND |
| 2020-12-15 | CA5810001_008_008-202012151410 | ND |
| 2021-01-11 | CA5810001_009_009-202101111155 | ND |
| 2021-01-12 | CA5810001_023_023-202101121122 | ND |
| 2021-01-12 | CA5810001_011_011-202101121111 | ND |
| 2021-01-28 | CA5810001_008_008-202101281320 | ND |
| 2021-04-05 | CA5810001_011_011-202104051059 | ND |
| 2021-04-05 | CA5810001_023_023-202104051108 | ND |
| 2021-04-19 | CA5810001_008_008-202104191127 | ND |
| 2021-04-19 | CA5810001_009_009-202104191155 | ND |
| 2021-07-15 | CA5810001_008_008-202107151315 | ND |
| 2021-07-15 | CA5810001_009_009-202107151335 | ND |
| 2021-08-05 | CA5810001_023_023-202108051445 | ND |
| 2021-08-05 | CA5810001_011_011-202108051435 | ND |
| 2021-10-26 | CA5810001_008_008-202110261154 | ND |
| 2021-10-26 | CA5810001_009_009-202110261400 | ND |
| 2021-10-27 | CA5810001_023_023-202110271049 | ND |
| 2021-10-27 | CA5810001_011_011-202110271036 | ND |
| 2022-01-13 | CA5810001_008_008-202201131115 | ND |
| 2022-01-13 | CA5810001_009_009-202201131330 | ND |
| 2022-01-20 | CA5810001_023_023-202201201357 | ND |
| 2022-01-20 | CA5810001_011_011-202201201337 | ND |
| 2022-01-26 | CA5810001_023_023-202201261409 | ND |
| 2022-02-10 | CA5810001_023_023-202202101320 | ND |
| 2022-03-10 | CA5810001_023_023-202203101339 | ND |
| 2022-04-18 | CA5810001_009_009-202204181115 | ND |
| 2022-04-18 | CA5810001_008_008-202204181048 | ND |
| 2022-04-19 | CA5810001_011_011-202204191121 | ND |
| 2022-04-19 | CA5810001_023_023-202204191110 | ND |
| 2022-05-11 | CA5810001_023_023-202205111440 | ND |
| 2022-06-03 | CA5810001_018_018-202206031255 | ND |
| 2022-06-03 | CA5810001_016_016-202206031250 | ND |
| 2022-06-06 | CA5810001_023_023-202206061136 | ND |
| 2022-06-08 | CA5810001_016_016-202206081240 | ND |
| 2022-06-15 | CA5810001_016_016-202206150950 | ND |
| 2022-06-22 | CA5810001_016_016-202206221059 | ND |
| 2022-06-29 | CA5810001_016_016-202206291155 | ND |
| 2022-06-29 | CA5810001_016_016-202206291054 | ND |
| 2022-06-29 | CA5810001_016_016-202206291155 | ND |
| 2022-07-19 | CA5810001_009_009-202207191440 | ND |
| 2022-07-19 | CA5810001_008_008-202207191355 | ND |
| 2022-07-28 | CA5810001_023_023-202207281355 | ND |
| 2022-07-28 | CA5810001_011_011-202207281343 | ND |
| 2022-08-08 | CA5810001_023_023-202208081122 | ND |
| 2022-08-09 | CA5810001_016_016-202208091155 | ND |
| 2022-09-07 | CA5810001_016_016-202209071332 | ND |
| 2022-09-15 | CA5810001_023_023-202209151050 | ND |
| 2022-10-06 | CA5810001_009_009-202210060850 | ND |
| 2022-10-12 | CA5810001_008_008-202210121058 | ND |
| 2022-10-18 | CA5810001_016_016-20221018NUL | ND |
| 2022-10-18 | CA5810001_016_016-202210181336 | ND |
| 2022-10-24 | CA5810001_011_011-202210241138 | ND |
| 2022-10-24 | CA5810001_023_023-202210241156 | ND |
| 2022-10-24 | CA5810001_011_011-202210241140 | ND |
| 2022-11-03 | CA5810001_016_016-202211031100 | ND |
| 2022-11-09 | CA5810001_023_023-202211091305 | ND |
| 2022-12-05 | CA5810001_023_023-202212051045 | ND |
| 2022-12-06 | CA5810001_016_016-202212061018 | ND |
| 2023-01-09 | CA5810001_016_016-202301091126 | ND |
| 2023-01-10 | CA5810001_008_008-202301101453 | ND |
| 2023-01-10 | CA5810001_008_008-202301101501 | ND |
| 2023-01-22 | CA5810001_009_009-202301221134 | ND |
| 2023-01-22 | CA5810001_009_009-202301221127 | ND |
| 2023-01-23 | CA5810001_011_011-202301231409 | ND |
| 2023-01-23 | CA5810001_023_023-202301231351 | ND |
| 2023-01-23 | CA5810001_011_011-202301231357 | ND |
| 2023-02-07 | CA5810001_016_016-202302071042 | ND |
| 2023-02-14 | CA5810001_023_023-202302141332 | ND |
| 2023-03-07 | CA5810001_023_023-202303071032 | ND |
| 2023-03-08 | CA5810001_016_016-202303080939 | ND |
| 2023-03-08 | CA5810001_016_016-202303081006 | ND |
| 2023-04-11 | CA5810001_016_016-202304111125 | ND |
| 2023-04-17 | CA5810001_023_023-202304171046 | ND |
| 2023-04-17 | CA5810001_023_023-202304171120 | ND |
| 2023-04-17 | CA5810001_011_011-202304171034 | ND |
| 2023-04-17 | CA5810001_011_011-202304171104 | ND |
| 2023-04-20 | CA5810001_009_009-202304201043 | ND |
| 2023-04-20 | CA5810001_008_008-202304200827 | ND |
| 2023-04-20 | CA5810001_009_009-202304201040 | ND |
| 2023-04-25 | CA5810001_013_013-202304251356 | ND |
| 2023-04-25 | CA5810001_013_013-202304251348 | ND |
| 2023-05-08 | CA5810001_023_023-202305081051 | ND |
| 2023-05-10 | CA5810001_016_016-202305101403 | ND |
| 2023-05-10 | CA5810001_016_016-202305101348 | ND |
| 2023-06-14 | CA5810001_023_023-202306141501 | ND |
| 2023-06-14 | CA5810001_016_016-202306141233 | ND |
| 2023-06-14 | CA5810001_028_028-202306141215 | ND |
| 2023-07-11 | CA5810001_009_009-202307111026 | ND |
| 2023-07-11 | CA5810001_011_011-202307111116 | ND |
| 2023-07-11 | CA5810001_011_011-202307111121 | ND |
| 2023-07-11 | CA5810001_023_023-202307111126 | ND |
| 2023-07-11 | CA5810001_009_009-202307111032 | ND |
| 2023-07-11 | CA5810001_023_023-202307111110 | ND |
| 2023-07-18 | CA5810001_008_008-202307181314 | ND |
| 2023-07-27 | CA5810001_016_016-202307271134 | ND |
| 2023-07-27 | CA5810001_027_027-202307271107 | ND |
| 2023-07-27 | CA5810001_028_028-202307271054 | ND |
| 2023-08-09 | CA5810001_016_016-202308091121 | ND |
| 2023-08-09 | CA5810001_027_027-202308091059 | ND |
| 2023-08-09 | CA5810001_016_016-202308091115 | ND |
| 2023-08-09 | CA5810001_028_028-202308091034 | ND |
| 2023-08-09 | CA5810001_028_028-202308091049 | ND |
| 2023-08-31 | CA5810001_023_023-202308311413 | ND |
| 2023-09-12 | CA5810001_023_023-202309120926 | ND |
| 2023-09-21 | CA5810001_028_028-202309211319 | ND |
| 2023-09-21 | CA5810001_016_016-202309211325 | ND |
| 2023-09-21 | CA5810001_027_027-202309211335 | ND |
| 2023-10-09 | CA5810001_008_008-202310091011 | ND |
| 2023-10-09 | CA5810001_015_015-202310091049 | ND |
| 2023-10-11 | CA5810001_009_009-202310111330 | ND |
| 2023-10-11 | CA5810001_009_009-202310111335 | ND |
| 2023-10-17 | CA5810001_011_011-202310170942 | ND |
| 2023-10-17 | CA5810001_023_023-202310170952 | ND |
| 2023-10-17 | CA5810001_023_023-202310170958 | ND |
| 2023-10-17 | CA5810001_011_011-202310170937 | ND |
| 2023-10-25 | CA5810001_027_027-202310250949 | ND |
| 2023-10-25 | CA5810001_028_028-202310251004 | ND |
| 2023-10-25 | CA5810001_016_016-202310251020 | ND |
| 2023-11-08 | CA5810001_010_010-202311081111 | ND |
| 2023-11-20 | CA5810001_023_023-202311201322 | ND |
| 2023-11-21 | CA5810001_028_028-202311210917 | ND |
| 2023-11-21 | CA5810001_016_016-202311210930 | ND |
| 2023-11-21 | CA5810001_028_028-202311210921 | ND |
| 2023-11-21 | CA5810001_016_016-202311210934 | ND |
| 2023-11-21 | CA5810001_027_027-202311210910 | ND |
| 2023-12-07 | CA5810001_023_023-202312071057 | ND |
| 2023-12-26 | CA5810001_010_010-202312261124 | ND |
| 2023-12-26 | CA5810001_015_015-202312261044 | ND |
| 2023-12-26 | CA5810001_016_016-202312260748 | ND |
| 2023-12-26 | CA5810001_028_028-202312260738 | ND |
| 2024-03-11 | 380-86816-2 | ND |
| 2024-03-11 | 380-86820-2 | ND |
| 2024-03-11 | 380-86821-2 | ND |
| 2024-03-12 | 380-87280-3 | ND |
| 2024-03-13 | 380-87284-3 | ND |
| 2024-03-13 | 380-87276-3 | ND |
| 2024-03-13 | 380-87274-3 | ND |