Chromium (hexavalent)
California Water Service (CWS) - Bakersfield
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).
164
Samples
0
Samples exceeding legal limit (MCL)
131
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.584 ppb | 101 | 74 | ND - 3.30 ppb |
| 2015 | 0.802 ppb | 60 | 55 | ND - 2.60 ppb |
| 2016 | 2.25 ppb | 2 | 2 | 1.80 ppb - 2.70 ppb |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 1 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-06-09 | A4E0742-01A | 0.110 ppb |
| 2014-06-09 | A4E0742-09A | 0.130 ppb |
| 2014-06-10 | A4E0742-13A | 0.110 ppb |
| 2014-06-16 | A4E2256-01A | 0.0750 ppb |
| 2014-06-16 | A4E2253-01A | 0.160 ppb |
| 2014-06-16 | A4E2250-01A | ND |
| 2014-06-16 | A4E2260-01A | 0.600 ppb |
| 2014-06-16 | A4E2261-01A | 1.20 ppb |
| 2014-07-14 | A4F2472-01A | 0.750 ppb |
| 2014-07-15 | A4F2476-01A | ND |
| 2014-07-15 | A4F2477-01A | 0.990 ppb |
| 2014-07-15 | A4F1967-01A | ND |
| 2014-07-15 | A4F2473-01A | 1.20 ppb |
| 2014-07-15 | A4F1974-01A | 0.550 ppb |
| 2014-07-17 | A4F2474-01A | ND |
| 2014-07-18 | A4G0683-01A | 0.610 ppb |
| 2014-07-18 | A4G0684-01A | 0.820 ppb |
| 2014-07-18 | A4F1739-01A | 0.0480 ppb |
| 2014-07-21 | A4G0685-01A | 0.660 ppb |
| 2014-07-22 | A4F1968-01A | 0.750 ppb |
| 2014-07-22 | A4F1969-01A | 0.580 ppb |
| 2014-07-22 | A4F2479-01A | 0.570 ppb |
| 2014-08-04 | 5806-050-1311 | ND |
| 2014-08-04 | 5806-106-1423 | ND |
| 2014-08-05 | 5806-005-1405 | ND |
| 2014-08-06 | 5806-056-1525 | 0.300 ppb |
| 2014-08-11 | A4G2144-01A | 0.350 ppb |
| 2014-08-13 | 5806-018-1525 | ND |
| 2014-08-13 | 5806-098-1425 | ND |
| 2014-08-13 | 5806-105-1515 | ND |
| 2014-08-18 | A4H0210-01A | 0.170 ppb |
| 2014-08-18 | A4H0211-01A | 0.180 ppb |
| 2014-08-18 | A4G2151-01A | 0.400 ppb |
| 2014-08-18 | A4G2785-01A | 1.10 ppb |
| 2014-08-27 | 5806-253-0731 | ND |
| 2014-08-29 | A4G2146-01A | 0.590 ppb |
| 2014-09-09 | 5806-094-1430 | 1.70 ppb |
| 2014-09-10 | 5806-146-1245 | 1.70 ppb |
| 2014-09-10 | 5806-148-1250 | 3.30 ppb |
| 2014-09-10 | 5806-149-1510 | 2.30 ppb |
| 2014-09-10 | 5806-154-1430 | 1.90 ppb |
| 2014-09-10 | 5806-156-1415 | 1.90 ppb |
| 2014-09-10 | 5806-160-1315 | 0.630 ppb |
| 2014-09-12 | A4I1715-01A | 0.840 ppb |
| 2014-09-12 | A4I1714-01A | 1.80 ppb |
| 2014-09-12 | A4I1717-01A | 0.660 ppb |
| 2014-09-15 | 5806-006-1257 | ND |
| 2014-09-15 | 5806-011-1249 | 0.270 ppb |
| 2014-09-15 | 5806-055-0915 | ND |
| 2014-09-16 | 5806-021-1110 | ND |
| 2014-09-16 | 5806-031-1349 | 0.230 ppb |
| 2014-09-16 | 5806-052-1125 | 0.200 ppb |
| 2014-09-16 | 5806-058-1020 | 0.570 ppb |
| 2014-09-18 | A4I0206-01A | ND |
| 2014-09-19 | A4I0208-01A | 0.650 ppb |
| 2014-09-22 | 5806-069-1008 | 0.960 ppb |
| 2014-09-22 | 5806-059-1143 | ND |
| 2014-09-22 | 5806-099-1345 | 0.410 ppb |
| 2014-09-23 | 5806-015-1018 | 0.230 ppb |
| 2014-09-23 | 5806-024-0945 | ND |
| 2014-09-23 | 5806-068-1235 | 1.60 ppb |
| 2014-09-23 | 5806-091-0920 | 0.750 ppb |
| 2014-09-24 | 5806-096-1125 | 0.350 ppb |
| 2014-09-24 | 5806-107-1245 | 0.780 ppb |
| 2014-09-26 | A4J0024-01A | 0.0980 ppb |
| 2014-09-26 | A4J0027-01A | 1.000 ppb |
| 2014-09-26 | A4J0026-01A | 1.70 ppb |
| 2014-09-29 | 5806-151-0845 | 1.60 ppb |
| 2014-10-01 | 5806-110-1200 | 0.220 ppb |
| 2014-10-01 | 5806-131-1055 | 2.40 ppb |
| 2014-10-02 | 5806-109-0936 | 0.220 ppb |
| 2014-10-02 | 5806-117-1033 | 0.600 ppb |
| 2014-10-10 | A4J0591-01A | 0.220 ppb |
| 2014-10-10 | A4I2123-01A | 0.570 ppb |
| 2014-10-10 | A4J0593-01A | 0.160 ppb |
| 2014-10-10 | A4I2124-01A | 0.490 ppb |
| 2014-10-13 | A4J0082-01A | 1.50 ppb |
| 2014-10-13 | A4J0081-01A | 1.10 ppb |
| 2014-10-17 | A4J1137-01A | 1.80 ppb |
| 2014-10-20 | 5806-053-1350 | ND |
| 2014-10-20 | 5806-119-1425 | ND |
| 2014-10-21 | 5806-002-1105 | ND |
| 2014-10-21 | 5806-004-1250 | 0.210 ppb |
| 2014-10-24 | A4J1138-01A | 1.50 ppb |
| 2014-10-27 | 5806-143-1345 | 0.990 ppb |
| 2014-10-28 | 5806-020-1030 | ND |
| 2014-10-31 | A4J2084-01A | 1.90 ppb |
| 2014-11-13 | A4J2853-01A | 0.150 ppb |
| 2014-12-02 | A4K0896-01A | ND |
| 2014-12-08 | A4K2091-01A | 0.110 ppb |
| 2014-12-08 | A4K2089-01A | 0.130 ppb |
| 2014-12-08 | A4K0902-01A | 0.310 ppb |
| 2014-12-08 | A4K2096-01A | 0.130 ppb |
| 2014-12-09 | A4K0904-01A | ND |
| 2014-12-10 | 5806-053-1110 | ND |
| 2014-12-11 | 5806-118-1450 | ND |
| 2014-12-12 | 5806-163-0938 | 2.20 ppb |
| 2014-12-16 | 5806-003-2230 | ND |
| 2014-12-16 | 5806-009-2202 | ND |
| 2014-12-16 | 5806-125-2005 | 0.630 ppb |
| 2014-12-16 | 5806-126-1017 | 0.270 ppb |
| 2015-01-05 | A4L2527-01A | 1.30 ppb |
| 2015-01-07 | A4L2529-01A | 1.10 ppb |
| 2015-01-09 | A4L2605-01A | 0.660 ppb |
| 2015-01-09 | A4L2606-01A | 0.170 ppb |
| 2015-01-09 | A4L2604-01A | 1.30 ppb |
| 2015-01-16 | A5A0581-01A | ND |
| 2015-01-16 | A5A0582-01A | 0.590 ppb |
| 2015-01-16 | A4L2607-01A | 0.480 ppb |
| 2015-01-16 | A5A0584-01A | 0.370 ppb |
| 2015-01-16 | A5A0580-01A | 0.450 ppb |
| 2015-01-23 | A4K2092-01A | 0.170 ppb |
| 2015-01-30 | A5A1899-01A | 0.160 ppb |
| 2015-02-02 | A5A1898-01A | 0.0340 ppb |
| 2015-02-06 | A5A1961-01A | ND |
| 2015-02-10 | A5A1960-01A | ND |
| 2015-02-12 | A5B0643-01A | 0.150 ppb |
| 2015-03-16 | 201503180508AM | 0.170 ppb |
| 2015-03-25 | 201503270212AM | ND |
| 2015-03-25 | 201503280108AM | 0.0680 ppb |
| 2015-03-25 | 201503280113AM | 1.20 ppb |
| 2015-03-25 | 201503270226AM | 1.000 ppb |
| 2015-04-07 | 201504090284AM | 0.690 ppb |
| 2015-04-07 | 201504090623AM | 0.700 ppb |
| 2015-04-14 | A5C2113-01A | 1.50 ppb |
| 2015-04-14 | A5D1573-01A | 1.70 ppb |
| 2015-04-30 | 201505050063AM | ND |
| 2015-04-30 | 201505050054AM | 0.0340 ppb |
| 2015-05-05 | 201505070531AM | 0.0340 ppb |
| 2015-05-11 | 201505130591AM | 0.350 ppb |
| 2015-05-11 | 201505130579AM | 1.20 ppb |
| 2015-05-11 | 201505130466AM | 0.690 ppb |
| 2015-06-09 | 201506120270AM | 0.270 ppb |
| 2015-06-09 | 201506120180AM | 0.400 ppb |
| 2015-06-09 | 201506130056AM | 1.000 ppb |
| 2015-06-09 | 201506120195AM | 1.90 ppb |
| 2015-06-23 | 201506250425AM | 0.360 ppb |
| 2015-07-27 | 201507290572AM | 1.20 ppb |
| 2015-08-25 | 201509010617AM | 1.20 ppb |
| 2015-08-25 | 201508280059AM | 1.30 ppb |
| 2015-08-25 | 201509010645AM | 1.40 ppb |
| 2015-08-25 | 201508280064AM | 2.60 ppb |
| 2015-08-25 | 201508280209AM | 0.350 ppb |
| 2015-08-25 | 201508280102AM | 1.90 ppb |
| 2015-09-03 | 201509090384AM | 0.120 ppb |
| 2015-09-29 | 201510020553AM | 0.920 ppb |
| 2015-09-30 | 201510020498AM | 0.600 ppb |
| 2015-09-30 | 201510020599AM | 2.30 ppb |
| 2015-10-05 | 201510090397AM | 0.930 ppb |
| 2015-10-05 | 201510090188AM | 0.650 ppb |
| 2015-10-06 | 201510090458AM | 0.0970 ppb |
| 2015-10-15 | 201510220441AM | 0.110 ppb |
| 2015-10-20 | 201510220423AM | 1.000 ppb |
| 2015-10-27 | 201510290307AM | 2.20 ppb |
| 2015-10-29 | 201511050559AM | 0.0820 ppb |
| 2015-11-02 | 201511060297AM | 0.910 ppb |
| 2015-11-09 | 201511130072AM | 2.20 ppb |
| 2015-12-02 | 5806-125-1549 | 0.620 ppb |
| 2015-12-07 | 5806-124-1006 | 0.510 ppb |
| 2015-12-09 | 5806-163-1203 | 2.40 ppb |
| 2015-12-15 | 5806-108-1015 | 2.30 ppb |
| 2016-01-15 | 201601200772AM | 2.70 ppb |
| 2016-02-12 | 201602170678AM | 1.80 ppb |
| 2018-06-15 | 9590-026-0945 | ND |