Chromium (total)
Coast Springs - Cal. Water Service (puc)
Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.
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 | ND | 13 | 0 | ND |
| 2019 | ND | 10 | 0 | ND |
| 2020 | ND | 12 | 0 | ND |
| 2021 | ND | 10 | 0 | ND |
| 2022 | 0.464 ppb | 14 | 4 | ND - 2.00 ppb |
| 2023 | 0.236 ppb | 11 | 2 | ND - 1.40 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 100 ppb
The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-02-07 | CA2110007_001_001-201802071215 | ND |
| 2018-04-12 | CA2110007_002_002-201804121145 | ND |
| 2018-04-12 | CA2110007_001_001-201804121245 | ND |
| 2018-06-26 | CA2110007_001_001-201806261230 | ND |
| 2018-07-16 | CA2110007_008_008-201807161220 | ND |
| 2018-07-16 | CA2110007_006_006-201807161125 | ND |
| 2018-07-16 | CA2110007_007_007-201807161155 | ND |
| 2018-07-23 | CA2110007_004_004-201807231210 | ND |
| 2018-07-23 | CA2110007_003_003-201807231150 | ND |
| 2018-07-26 | CA2110007_016_016-201807261155 | ND |
| 2018-07-26 | CA2110007_005_005-201807261140 | ND |
| 2018-08-06 | CA2110007_010_010-201808061105 | ND |
| 2018-08-06 | CA2110007_002_002-201808061045 | ND |
| 2019-06-12 | CA2110007_001_001-201906121245 | ND |
| 2019-06-17 | CA2110007_002_002-201906171045 | ND |
| 2019-06-17 | CA2110007_003_003-201906171100 | ND |
| 2019-07-08 | CA2110007_005_005-201907081340 | ND |
| 2019-08-01 | CA2110007_010_010-201908011040 | ND |
| 2019-08-12 | CA2110007_016_016-201908121025 | ND |
| 2019-10-07 | CA2110007_006_006-201910071035 | ND |
| 2019-10-07 | CA2110007_008_008-201910071020 | ND |
| 2019-10-07 | CA2110007_004_004-201910071105 | ND |
| 2019-10-07 | CA2110007_007_007-201910071000 | ND |
| 2020-06-15 | CA2110007_007_007-202006151000 | ND |
| 2020-06-15 | CA2110007_008_008-202006150945 | ND |
| 2020-06-15 | CA2110007_001_001-202006151120 | ND |
| 2020-06-15 | CA2110007_005_005-202006151040 | ND |
| 2020-06-18 | CA2110007_016_016-202006181000 | ND |
| 2020-06-24 | CA2110007_002_002-202006241245 | ND |
| 2020-06-24 | CA2110007_004_004-202006241200 | ND |
| 2020-06-24 | CA2110007_003_003-202006241140 | ND |
| 2020-07-14 | CA2110007_010_010-202007141050 | ND |
| 2020-10-05 | CA2110007_006_006-202010050730 | ND |
| 2020-10-12 | CA2110007_001_001-202010121145 | ND |
| 2020-10-12 | CA2110007_002_002-202010121150 | ND |
| 2021-06-14 | CA2110007_004_004-202106141210 | ND |
| 2021-06-14 | CA2110007_006_006-202106141225 | ND |
| 2021-06-14 | CA2110007_002_002-202106141155 | ND |
| 2021-06-14 | CA2110007_001_001-202106141110 | ND |
| 2021-06-22 | CA2110007_008_008-202106221010 | ND |
| 2021-06-22 | CA2110007_005_005-202106221035 | ND |
| 2021-06-22 | CA2110007_016_016-202106221100 | ND |
| 2021-07-01 | CA2110007_007_007-202107011155 | ND |
| 2021-07-06 | CA2110007_010_010-202107060900 | ND |
| 2021-07-06 | CA2110007_003_003-202107060950 | ND |
| 2022-04-12 | CA2110007_001_001-202204121130 | 2.00 ppb |
| 2022-04-26 | CA2110007_002_002-202204260935 | 1.20 ppb |
| 2022-06-13 | CA2110007_001_001-202206131150 | ND |
| 2022-06-14 | CA2110007_007_007-202206141050 | ND |
| 2022-06-14 | CA2110007_006_006-202206141010 | ND |
| 2022-06-14 | CA2110007_005_005-202206141215 | ND |
| 2022-06-14 | CA2110007_002_002-202206141145 | ND |
| 2022-06-14 | CA2110007_016_016-202206141225 | ND |
| 2022-06-28 | CA2110007_008_008-202206281130 | ND |
| 2022-07-19 | CA2110007_001_001-202207190930 | 1.70 ppb |
| 2022-07-19 | CA2110007_010_010-202207191210 | ND |
| 2022-07-19 | CA2110007_003_003-202207191100 | ND |
| 2022-07-19 | CA2110007_004_004-202207191045 | ND |
| 2022-10-05 | CA2110007_001_001-202210051045 | 1.60 ppb |
| 2023-02-14 | CA2110007_001_001-202302141130 | 1.40 ppb |
| 2023-04-17 | CA2110007_001_001-202304171020 | 1.20 ppb |
| 2023-06-06 | CA2110007_001_001-202306061140 | ND |
| 2023-06-19 | CA2110007_005_005-202306190930 | ND |
| 2023-06-19 | CA2110007_016_016-202306191000 | ND |
| 2023-06-21 | CA2110007_007_007-202306210930 | ND |
| 2023-06-21 | CA2110007_006_006-202306210900 | ND |
| 2023-06-22 | CA2110007_008_008-202306221130 | ND |
| 2023-06-27 | CA2110007_004_004-202306270930 | ND |
| 2023-06-28 | CA2110007_002_002-202306280945 | ND |
| 2023-07-18 | CA2110007_010_010-202307181140 | ND |