Chromium (hexavalent)
Santa Clara Valley Water District
Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).
145
Samples
0
Samples exceeding legal limit (MCL)
24
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.207 ppb | 38 | 6 | ND - 1.60 ppb |
| 2019 | 0.248 ppb | 38 | 7 | ND - 1.71 ppb |
| 2020 | 0.206 ppb | 20 | 3 | ND - 1.60 ppb |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | 0.247 ppb | 18 | 3 | ND - 1.74 ppb |
| 2023 | 0.232 ppb | 31 | 5 | ND - 1.87 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.02 ppb
The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-02-20 | CA4310027_005_005-201802200958 | ND |
| 2018-02-20 | CA4310027_006_006-201802201025 | ND |
| 2018-02-20 | CA4310027_009_009-201802201120 | ND |
| 2018-02-20 | CA4310027_004_004-201802201030 | ND |
| 2018-02-20 | CA4310027_001_001-201802200900 | ND |
| 2018-02-20 | CA4310027_002_002-201802201146 | ND |
| 2018-02-20 | CA4310027_007_007-201802200845 | ND |
| 2018-03-27 | CA4310027_011_011-201803270833 | ND |
| 2018-05-14 | CA4310027_023_023-201805140944 | 1.12 ppb |
| 2018-05-14 | CA4310027_024_024-201805141015 | 1.23 ppb |
| 2018-05-14 | CA4310027_022_022-201805140926 | 1.54 ppb |
| 2018-05-15 | CA4310027_004_004-201805151027 | ND |
| 2018-05-15 | CA4310027_005_005-201805150848 | ND |
| 2018-05-15 | CA4310027_007_007-201805151250 | ND |
| 2018-05-15 | CA4310027_009_009-201805151124 | ND |
| 2018-05-15 | CA4310027_011_011-201805151713 | ND |
| 2018-05-15 | CA4310027_002_002-201805151115 | ND |
| 2018-05-15 | CA4310027_001_001-201805150858 | ND |
| 2018-05-15 | CA4310027_006_006-201805150908 | ND |
| 2018-08-21 | CA4310027_009_009-201808211200 | ND |
| 2018-08-21 | CA4310027_001_001-201808210915 | ND |
| 2018-08-21 | CA4310027_002_002-201808210940 | ND |
| 2018-08-21 | CA4310027_004_004-201808211100 | ND |
| 2018-08-21 | CA4310027_005_005-201808211304 | ND |
| 2018-08-21 | CA4310027_006_006-201808211336 | ND |
| 2018-08-21 | CA4310027_007_007-201808211125 | ND |
| 2018-08-21 | CA4310027_011_011-201808210935 | ND |
| 2018-08-22 | CA4310027_023_023-201808221448 | 1.12 ppb |
| 2018-08-22 | CA4310027_022_022-201808221055 | 1.60 ppb |
| 2018-08-22 | CA4310027_024_024-201808221017 | 1.24 ppb |
| 2018-11-06 | CA4310027_001_001-201811060930 | ND |
| 2018-11-06 | CA4310027_005_005-201811061025 | ND |
| 2018-11-06 | CA4310027_009_009-201811061215 | ND |
| 2018-11-06 | CA4310027_007_007-201811061033 | ND |
| 2018-11-06 | CA4310027_011_011-201811060920 | ND |
| 2018-11-06 | CA4310027_002_002-201811061035 | ND |
| 2018-11-06 | CA4310027_004_004-201811061115 | ND |
| 2018-11-06 | CA4310027_006_006-201811061042 | ND |
| 2019-02-19 | CA4310027_006_006-201902190850 | ND |
| 2019-02-19 | CA4310027_001_001-201902190919 | 1.08 ppb |
| 2019-02-19 | CA4310027_002_002-201902191145 | ND |
| 2019-02-19 | CA4310027_004_004-201902191046 | ND |
| 2019-02-19 | CA4310027_005_005-201902190835 | ND |
| 2019-02-19 | CA4310027_011_011-201902190728 | ND |
| 2019-02-19 | CA4310027_007_007-201902190950 | ND |
| 2019-02-19 | CA4310027_009_009-201902191140 | ND |
| 2019-05-21 | CA4310027_011_011-201905210851 | ND |
| 2019-05-21 | CA4310027_002_002-201905211040 | ND |
| 2019-05-21 | CA4310027_005_005-201905211030 | ND |
| 2019-05-21 | CA4310027_006_006-201905211106 | ND |
| 2019-05-21 | CA4310027_001_001-201905210947 | ND |
| 2019-05-21 | CA4310027_009_009-201905211240 | ND |
| 2019-05-21 | CA4310027_004_004-201905211126 | ND |
| 2019-05-21 | CA4310027_007_007-201905211049 | ND |
| 2019-05-22 | CA4310027_022_022-201905221228 | 1.71 ppb |
| 2019-05-22 | CA4310027_023_023-201905221032 | 1.10 ppb |
| 2019-05-22 | CA4310027_024_024-201905221140 | 1.28 ppb |
| 2019-08-20 | CA4310027_005_005-201908200825 | ND |
| 2019-08-20 | CA4310027_001_001-201908200920 | ND |
| 2019-08-20 | CA4310027_002_002-201908201040 | ND |
| 2019-08-20 | CA4310027_004_004-201908201100 | ND |
| 2019-08-20 | CA4310027_006_006-201908200844 | ND |
| 2019-08-20 | CA4310027_007_007-201908200955 | ND |
| 2019-08-20 | CA4310027_009_009-201908201154 | ND |
| 2019-08-20 | CA4310027_011_011-201908200654 | ND |
| 2019-11-19 | CA4310027_001_001-201911190930 | ND |
| 2019-11-19 | CA4310027_002_002-201911190840 | ND |
| 2019-11-19 | CA4310027_004_004-201911191105 | ND |
| 2019-11-19 | CA4310027_005_005-201911191045 | ND |
| 2019-11-19 | CA4310027_006_006-201911191101 | ND |
| 2019-11-19 | CA4310027_007_007-201911191207 | ND |
| 2019-11-19 | CA4310027_009_009-201911191150 | ND |
| 2019-11-19 | CA4310027_011_011-201911190926 | ND |
| 2019-11-20 | CA4310027_023_023-201911201000 | 1.30 ppb |
| 2019-11-20 | CA4310027_022_022-201911201115 | 1.63 ppb |
| 2019-11-20 | CA4310027_024_024-201911201036 | 1.33 ppb |
| 2020-02-11 | CA4310027_007_007-202002111033 | ND |
| 2020-02-11 | CA4310027_009_009-202002111150 | ND |
| 2020-02-11 | CA4310027_002_002-202002111051 | ND |
| 2020-02-11 | CA4310027_001_001-202002110925 | ND |
| 2020-02-11 | CA4310027_006_006-202002110918 | ND |
| 2020-02-11 | CA4310027_011_011-202002110736 | ND |
| 2020-02-11 | CA4310027_004_004-202002111100 | ND |
| 2020-02-11 | CA4310027_005_005-202002110859 | ND |
| 2020-05-11 | CA4310027_001_001-202005110945 | ND |
| 2020-05-11 | CA4310027_005_005-202005110816 | ND |
| 2020-05-11 | CA4310027_006_006-202005110838 | ND |
| 2020-05-11 | CA4310027_011_011-202005110712 | ND |
| 2020-05-11 | CA4310027_025_025-202005111155 | ND |
| 2020-05-11 | CA4310027_007_007-202005110940 | ND |
| 2020-05-11 | CA4310027_004_004-202005111130 | ND |
| 2020-05-12 | CA4310027_024_024-202005121129 | 1.31 ppb |
| 2020-05-12 | CA4310027_002_002-202005120725 | ND |
| 2020-05-12 | CA4310027_009_009-202005120811 | ND |
| 2020-05-12 | CA4310027_022_022-202005121215 | 1.60 ppb |
| 2020-05-12 | CA4310027_023_023-202005121041 | 1.20 ppb |
| 2022-08-09 | CA4310027_001_001-202208090930 | ND |
| 2022-08-09 | CA4310027_005_005-202208090914 | ND |
| 2022-08-09 | CA4310027_006_006-202208091016 | ND |
| 2022-08-09 | CA4310027_007_007-202208090936 | ND |
| 2022-08-09 | CA4310027_004_004-202208091108 | ND |
| 2022-08-09 | CA4310027_009_009-202208090856 | ND |
| 2022-08-09 | CA4310027_011_011-202208091117 | ND |
| 2022-08-10 | CA4310027_024_024-202208101241 | 1.38 ppb |
| 2022-08-10 | CA4310027_025_025-202208101055 | ND |
| 2022-08-10 | CA4310027_022_022-202208101125 | 1.74 ppb |
| 2022-08-10 | CA4310027_023_023-202208101009 | 1.33 ppb |
| 2022-11-01 | CA4310027_007_007-202211011125 | ND |
| 2022-11-01 | CA4310027_009_009-202211011003 | ND |
| 2022-11-01 | CA4310027_011_011-202211010915 | ND |
| 2022-11-01 | CA4310027_001_001-202211011033 | ND |
| 2022-11-01 | CA4310027_004_004-202211010854 | ND |
| 2022-11-01 | CA4310027_006_006-202211011130 | ND |
| 2022-11-02 | CA4310027_005_005-202211021133 | ND |
| 2023-02-21 | CA4310027_004_004-202302211111 | ND |
| 2023-02-21 | CA4310027_006_006-202302211127 | ND |
| 2023-02-21 | CA4310027_007_007-202302211018 | ND |
| 2023-02-21 | CA4310027_005_005-202302211113 | ND |
| 2023-02-21 | CA4310027_011_011-202302210929 | ND |
| 2023-02-21 | CA4310027_001_001-202302210941 | 1.000 ppb |
| 2023-03-02 | CA4310027_009_009-202303021020 | ND |
| 2023-05-09 | CA4310027_004_004-202305091027 | ND |
| 2023-05-09 | CA4310027_006_006-202305091037 | ND |
| 2023-05-09 | CA4310027_009_009-202305091043 | ND |
| 2023-05-09 | CA4310027_007_007-202305091147 | ND |
| 2023-05-09 | CA4310027_011_011-202305090839 | ND |
| 2023-05-09 | CA4310027_001_001-202305090906 | 1.33 ppb |
| 2023-05-10 | CA4310027_005_005-202305101122 | ND |
| 2023-08-08 | CA4310027_006_006-202308081057 | ND |
| 2023-08-08 | CA4310027_007_007-202308081227 | ND |
| 2023-08-08 | CA4310027_011_011-202308080843 | ND |
| 2023-08-08 | CA4310027_005_005-202308081050 | ND |
| 2023-08-08 | CA4310027_001_001-202308080856 | ND |
| 2023-08-08 | CA4310027_004_004-202308081041 | ND |
| 2023-08-08 | CA4310027_009_009-202308081034 | ND |
| 2023-08-09 | CA4310027_024_024-202308091047 | 1.47 ppb |
| 2023-08-09 | CA4310027_022_022-202308091119 | 1.87 ppb |
| 2023-08-09 | CA4310027_023_023-202308091026 | 1.51 ppb |
| 2023-10-03 | CA4310027_011_011-202310031012 | ND |
| 2023-11-14 | CA4310027_006_006-202311141118 | ND |
| 2023-11-14 | CA4310027_004_004-202311141158 | ND |
| 2023-11-14 | CA4310027_007_007-202311140932 | ND |
| 2023-11-14 | CA4310027_009_009-202311140955 | ND |
| 2023-11-14 | CA4310027_005_005-202311141102 | ND |
| 2023-11-14 | CA4310027_001_001-202311140825 | ND |