Chromium (total)
California Water Service (CWS) - Bakersfield
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.
298
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 |
|---|---|---|---|---|
| 2014 | 1.05 ppb | 60 | 35 | ND - 3.86 ppb |
| 2015 | 0.790 ppb | 113 | 69 | ND - 6.32 ppb |
| 2016 | 0.114 ppb | 43 | 3 | ND - 2.80 ppb |
| 2017 | ND | 29 | 0 | ND |
| 2018 | ND | 29 | 0 | ND |
| 2019 | ND | 24 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-01-06 | 5810-026-1415 | ND |
| 2014-01-14 | 5810-002-1008 | ND |
| 2014-02-04 | 5810-009-0931 | ND |
| 2014-03-04 | 5810-253-0810 | ND |
| 2014-05-05 | 5701-250-0958 | 1.63 ppb |
| 2014-05-27 | 5701-250-0916 | 2.06 ppb |
| 2014-06-02 | 5701-250-1048 | 2.13 ppb |
| 2014-06-04 | 5701-131-0953 | 3.86 ppb |
| 2014-06-05 | 5810-005-1016 | ND |
| 2014-06-09 | A4E0742-01A | ND |
| 2014-06-09 | A4E0742-09A | ND |
| 2014-06-10 | A4E0742-13A | ND |
| 2014-06-16 | 5701-250-0908 | 1.85 ppb |
| 2014-06-18 | 5701-163-1105 | 2.67 ppb |
| 2014-06-23 | 5701-250-1115 | 1.94 ppb |
| 2014-06-25 | 5810-018-1018 | ND |
| 2014-06-25 | 5810-020-0934 | ND |
| 2014-06-30 | 5810-021-1025 | ND |
| 2014-07-07 | 5806-011-1500 | ND |
| 2014-07-07 | 5701-055-1115 | 2.13 ppb |
| 2014-07-07 | 5701-250-1050 | 2.35 ppb |
| 2014-07-10 | 5806-031-1345 | ND |
| 2014-07-14 | A4F2472-01A | 0.700 ppb |
| 2014-07-15 | 5701-129-1100 | 2.86 ppb |
| 2014-07-18 | A4G0683-01A | 0.600 ppb |
| 2014-07-18 | A4G0684-01A | 0.850 ppb |
| 2014-07-28 | 5701-250-0952 | 2.21 ppb |
| 2014-08-06 | 5806-024-1420 | ND |
| 2014-08-11 | A4G2144-01A | 0.490 ppb |
| 2014-08-13 | 5806-015-1120 | ND |
| 2014-08-13 | 5701-250-1108 | 1.53 ppb |
| 2014-08-18 | 5701-250-1042 | 1.41 ppb |
| 2014-08-25 | 5701-250-1102 | 1.74 ppb |
| 2014-09-02 | 5701-250-0553 | 2.00 ppb |
| 2014-09-08 | 5701-250-1100 | 2.83 ppb |
| 2014-09-10 | 5701-143-1350 | 2.18 ppb |
| 2014-09-15 | A4I0210-01A | ND |
| 2014-09-23 | A4H2659-01A | 0.290 ppb |
| 2014-09-23 | A4I1702-01A | ND |
| 2014-09-23 | A4I0209-01A | ND |
| 2014-09-24 | 5701-143-1255 | 1.57 ppb |
| 2014-09-29 | 5701-250-0922 | 2.15 ppb |
| 2014-10-06 | 5701-055-0914 | 2.23 ppb |
| 2014-10-06 | 5701-250-0947 | 1.77 ppb |
| 2014-10-07 | 5701-091-1000 | 2.06 ppb |
| 2014-10-08 | 5806-050-1013 | ND |
| 2014-10-09 | 5806-004-1326 | ND |
| 2014-10-13 | A4J0081-01A | 0.900 ppb |
| 2014-10-17 | A4J1137-01A | 2.00 ppb |
| 2014-10-17 | A4I2273-01A | 1.90 ppb |
| 2014-10-20 | 5806-006-1125 | ND |
| 2014-10-20 | 5701-250-0858 | 1.60 ppb |
| 2014-10-21 | A4J1136-01A | 2.30 ppb |
| 2014-10-27 | 5701-250-0848 | 1.87 ppb |
| 2014-11-03 | 5701-250-1202 | 1.81 ppb |
| 2014-12-08 | A4K2091-01A | 0.340 ppb |
| 2014-12-08 | A4K2089-01A | ND |
| 2014-12-08 | A4K2096-01A | ND |
| 2014-12-10 | A4K2148-01A | ND |
| 2014-12-16 | 5810-003-2240 | ND |
| 2015-01-05 | A4L2527-01A | 1.30 ppb |
| 2015-01-07 | A4L2529-01A | 1.30 ppb |
| 2015-01-08 | 5701-072-1412 | 1.48 ppb |
| 2015-01-09 | A4L2605-01A | 0.680 ppb |
| 2015-01-09 | A4L2606-01A | ND |
| 2015-01-09 | A4L2604-01A | 1.30 ppb |
| 2015-01-12 | 5701-055-1000 | 1.89 ppb |
| 2015-01-12 | 5701-091-1015 | 1.64 ppb |
| 2015-01-12 | 5701-250-1006 | 1.95 ppb |
| 2015-01-16 | A5A0581-01A | ND |
| 2015-01-16 | A5A0582-01A | 0.550 ppb |
| 2015-01-16 | A4L2607-01A | 0.470 ppb |
| 2015-01-16 | A5A0584-01A | 0.360 ppb |
| 2015-01-16 | A5A0580-01A | 0.420 ppb |
| 2015-01-20 | 5701-250-1420 | 2.97 ppb |
| 2015-01-23 | A4K2092-01A | 0.270 ppb |
| 2015-01-26 | 5701-250-1033 | 1.54 ppb |
| 2015-01-30 | A5A1899-01A | ND |
| 2015-02-02 | A5A1993-01A | 1.000 ppb |
| 2015-02-02 | A5A1898-01A | ND |
| 2015-02-06 | A5A1961-01A | ND |
| 2015-02-09 | 5701-250-1040 | 1.10 ppb |
| 2015-02-10 | A5A1960-01A | ND |
| 2015-02-12 | A5B0643-01A | 0.340 ppb |
| 2015-02-17 | 5701-250-0915 | 2.24 ppb |
| 2015-03-02 | 5701-143-1526 | 2.66 ppb |
| 2015-03-02 | 5701-250-1306 | 2.26 ppb |
| 2015-03-04 | 5806-051-1130 | ND |
| 2015-03-04 | 5806-072-1215 | ND |
| 2015-03-12 | A5C1199-01A | ND |
| 2015-03-16 | 201503180506AM | 0.230 ppb |
| 2015-03-19 | 5806-253-0735 | ND |
| 2015-03-25 | 201503270211AM | ND |
| 2015-03-25 | 201503280111AM | 1.20 ppb |
| 2015-03-25 | 201503280109AM | ND |
| 2015-03-25 | 201503270225AM | 1.10 ppb |
| 2015-04-06 | 5701-250-0914 | 3.93 ppb |
| 2015-04-07 | 201504090285AM | 0.800 ppb |
| 2015-04-07 | 201504090624AM | 0.770 ppb |
| 2015-04-20 | 5806-053-1307 | ND |
| 2015-04-21 | 5806-038-1450 | ND |
| 2015-04-30 | 201505050064AM | ND |
| 2015-04-30 | 201505050055AM | ND |
| 2015-05-05 | 201505070529AM | ND |
| 2015-05-05 | 201505210072AM | ND |
| 2015-05-08 | A4L0727-01A | 0.320 ppb |
| 2015-05-08 | A4L0728-01A | 0.530 ppb |
| 2015-05-08 | A4L0721-01A | 1.40 ppb |
| 2015-05-11 | 5806-096-1025 | ND |
| 2015-05-11 | 5806-105-1331 | ND |
| 2015-05-11 | 5806-156-0938 | ND |
| 2015-05-15 | 201505210106AM | 0.360 ppb |
| 2015-05-15 | 201505210082AM | 0.620 ppb |
| 2015-05-15 | 201505200401AM | 0.870 ppb |
| 2015-05-19 | 201505210768AM | ND |
| 2015-05-19 | A5E0959-01A | 1.10 ppb |
| 2015-06-09 | 201506120269AM | 0.280 ppb |
| 2015-06-09 | 201506130054AM | 0.960 ppb |
| 2015-06-09 | 201506120181AM | 0.410 ppb |
| 2015-06-09 | 201506120196AM | 1.90 ppb |
| 2015-06-10 | 5701-143-1015 | 3.23 ppb |
| 2015-06-15 | 201506200025AM | ND |
| 2015-06-15 | 201506190215AM | ND |
| 2015-06-16 | 5701-129-1258 | 6.32 ppb |
| 2015-06-23 | 201506250423AM | 0.370 ppb |
| 2015-06-24 | 201506260311AM | 0.800 ppb |
| 2015-06-24 | 201506260317AM | 0.740 ppb |
| 2015-06-24 | 201506290227AM | 1.000 ppb |
| 2015-06-24 | 201506260263AM | 0.790 ppb |
| 2015-07-08 | 5806-059-1410 | ND |
| 2015-07-08 | 5806-068-1132 | ND |
| 2015-07-27 | 201507290528AM | 1.10 ppb |
| 2015-07-27 | 201507290712AM | 1.30 ppb |
| 2015-07-27 | 201507290522AM | 1.30 ppb |
| 2015-08-05 | 5806-099-1400 | ND |
| 2015-08-10 | 5806-098-1035 | ND |
| 2015-08-13 | 5806-160-0934 | ND |
| 2015-08-25 | 201509010435AM | ND |
| 2015-08-25 | 201509010446AM | 0.700 ppb |
| 2015-08-25 | 201509010467AM | 0.750 ppb |
| 2015-08-25 | 201509010615AM | 2.10 ppb |
| 2015-08-25 | 201508280060AM | 1.40 ppb |
| 2015-08-25 | 201509010643AM | 1.50 ppb |
| 2015-08-25 | 201509011180AM | 0.890 ppb |
| 2015-08-25 | 201508280062AM | 5.10 ppb |
| 2015-08-25 | 201508280207AM | 0.430 ppb |
| 2015-08-25 | 201509011043AM | 1.20 ppb |
| 2015-08-25 | 201508280100AM | 1.90 ppb |
| 2015-09-03 | 201509090385AM | 0.200 ppb |
| 2015-09-08 | 5701-250-0937 | ND |
| 2015-09-10 | 5806-092-1437 | ND |
| 2015-09-11 | 201509150618AM | 1.40 ppb |
| 2015-09-29 | 5701-091-1501 | ND |
| 2015-09-29 | 5701-129-1430 | ND |
| 2015-09-30 | 201510020499AM | 0.780 ppb |
| 2015-09-30 | 201510020597AM | 2.20 ppb |
| 2015-10-05 | 5806-079-1335 | ND |
| 2015-10-05 | 5806-091-1205 | ND |
| 2015-10-06 | 5806-058-1050 | ND |
| 2015-10-09 | 201510150108AM | 1.60 ppb |
| 2015-10-13 | A5J0366-01A | 0.920 ppb |
| 2015-10-15 | 201510220439AM | 0.210 ppb |
| 2015-10-20 | 201510220421AM | 1.20 ppb |
| 2015-10-27 | 5806-056-1205 | ND |
| 2015-10-29 | 201511050560AM | 0.280 ppb |
| 2015-11-02 | 201511060295AM | 1.000 ppb |
| 2015-11-09 | 201511130078AM | 2.10 ppb |
| 2015-12-02 | 5701-129-1415 | ND |
| 2015-12-02 | 5701-131-1349 | ND |
| 2015-12-09 | 5806-106-1300 | ND |
| 2015-12-09 | 5806-163-1203 | ND |
| 2015-12-10 | 5806-094-1315 | ND |
| 2015-12-15 | 5806-108-1015 | ND |
| 2016-01-04 | 5806-106-0905 | ND |
| 2016-01-04 | 5806-107-0905 | ND |
| 2016-01-15 | 201601200771AM | 2.80 ppb |
| 2016-02-01 | 5701-250-1045 | ND |
| 2016-02-10 | 5806-122-1321 | ND |
| 2016-02-12 | 201602170816AM | 0.410 ppb |
| 2016-02-12 | 201602170677AM | 1.70 ppb |
| 2016-02-16 | 5701-250-0855 | ND |
| 2016-03-02 | 5701-143-2100 | ND |
| 2016-03-07 | 5701-250-1105 | ND |
| 2016-03-16 | 5806-253-1025 | ND |
| 2016-05-04 | 5806-124-1235 | ND |
| 2016-05-05 | 5806-118-1350 | ND |
| 2016-05-09 | 5701-250-1200 | ND |
| 2016-05-16 | 5701-250-1224 | ND |
| 2016-05-20 | 5806-110-1350 | ND |
| 2016-05-20 | 5806-126-1250 | ND |
| 2016-05-23 | 5701-250-1218 | ND |
| 2016-06-06 | 5701-250-1004 | ND |
| 2016-06-08 | 5806-148-1230 | ND |
| 2016-06-15 | 5806-131-1045 | ND |
| 2016-06-15 | 5701-131-1100 | ND |
| 2016-06-16 | 5806-055-1025 | ND |
| 2016-06-17 | 5806-151-1015 | ND |
| 2016-07-06 | 5701-250-0938 | ND |
| 2016-07-14 | 5806-109-1200 | ND |
| 2016-07-18 | 5701-055-1134 | ND |
| 2016-08-08 | 5806-149-1240 | ND |
| 2016-08-08 | 5806-154-0945 | ND |
| 2016-08-10 | 5701-250-0856 | ND |
| 2016-08-15 | 5806-125-1013 | ND |
| 2016-08-15 | 5701-250-1019 | ND |
| 2016-08-18 | 5806-069-1051 | ND |
| 2016-08-18 | 5806-150-1153 | ND |
| 2016-09-07 | 5806-119-1120 | ND |
| 2016-09-08 | 5806-052-1120 | ND |
| 2016-09-12 | 5806-143-1015 | ND |
| 2016-09-12 | 5806-146-1055 | ND |
| 2016-09-22 | 5806-117-0930 | ND |
| 2016-10-11 | 5701-129-1509 | ND |
| 2016-10-11 | 5701-129-1510 | ND |
| 2016-10-11 | 5806-129-1519 | ND |
| 2016-10-11 | 5701-250-1132 | ND |
| 2017-01-09 | 5701-250-0912 | ND |
| 2017-01-10 | 5806-002-1025 | ND |
| 2017-01-17 | 5701-250-0820 | ND |
| 2017-01-19 | 5806-026-0949 | ND |
| 2017-02-06 | 5701-250-0920 | ND |
| 2017-02-13 | 5701-250-0920 | ND |
| 2017-03-14 | 5806-253-0850 | ND |
| 2017-03-23 | 5806-021-0904 | ND |
| 2017-04-10 | 5806-009-1125 | ND |
| 2017-04-19 | 5806-004-1145 | ND |
| 2017-05-01 | 5701-250-0935 | ND |
| 2017-05-18 | 5701-250-0945 | ND |
| 2017-05-22 | 5701-250-1003 | ND |
| 2017-06-12 | 5806-050-1135 | ND |
| 2017-06-13 | 5701-005-1135 | ND |
| 2017-06-19 | 5806-018-0936 | ND |
| 2017-06-19 | 5701-250-1044 | ND |
| 2017-06-20 | 5806-005-1035 | ND |
| 2017-06-20 | 5806-015-1019 | ND |
| 2017-06-26 | 5806-006-0947 | ND |
| 2017-06-26 | 5701-250-1040 | ND |
| 2017-07-12 | 5806-003-0741 | ND |
| 2017-07-17 | 5701-250-0903 | ND |
| 2017-07-18 | 5806-031-1100 | ND |
| 2017-08-23 | 5806-024-1337 | ND |
| 2017-10-02 | 5701-250-0925 | ND |
| 2017-11-06 | 5806-011-1027 | ND |
| 2017-11-29 | 5701-250-1215 | ND |
| 2017-12-28 | 5806-020-1010 | ND |
| 2018-01-25 | 5701-267-1426 | ND |
| 2018-02-06 | 5701-250-1015 | ND |
| 2018-03-14 | 5806-051-1140 | ND |
| 2018-03-14 | 5806-072-1250 | ND |
| 2018-03-22 | 5806-253-0800 | ND |
| 2018-04-09 | 5701-250-0955 | ND |
| 2018-04-12 | 5701-267-1523 | ND |
| 2018-04-16 | 5806-156-1057 | ND |
| 2018-04-17 | 5806-053-1400 | ND |
| 2018-04-17 | 5806-105-0930 | ND |
| 2018-04-23 | 5806-094-1107 | ND |
| 2018-04-25 | 5806-096-0930 | ND |
| 2018-04-26 | 5806-038-1145 | ND |
| 2018-06-15 | 9590-026-0945 | ND |
| 2018-06-25 | 5701-091-0909 | ND |
| 2018-06-25 | 5701-250-1055 | ND |
| 2018-07-11 | 5806-068-1118 | ND |
| 2018-07-11 | 5806-092-1400 | ND |
| 2018-07-11 | 5806-106-1431 | ND |
| 2018-07-12 | 5806-056-1444 | ND |
| 2018-07-24 | 5806-059-1414 | ND |
| 2018-07-24 | 5806-091-0850 | ND |
| 2018-08-13 | 5806-099-0950 | ND |
| 2018-08-21 | 5806-098-0942 | ND |
| 2018-08-27 | 5806-160-1221 | ND |
| 2018-09-13 | 5806-058-0955 | ND |
| 2018-09-20 | 5806-069-1025 | ND |
| 2018-10-25 | 5806-058-1144 | ND |
| 2018-11-16 | 5806-048-1128 | ND |
| 2019-01-09 | 5806-107-1109 | ND |
| 2019-02-13 | 5806-122-1021 | ND |
| 2019-03-26 | 5806-253-1055 | ND |
| 2019-04-09 | 5701-091-0845 | ND |
| 2019-04-30 | 5701-267-0920 | ND |
| 2019-05-14 | 5806-125-0840 | ND |
| 2019-05-14 | 5806-126-0920 | ND |
| 2019-05-15 | 5806-118-1330 | ND |
| 2019-05-29 | 5806-110-1130 | ND |
| 2019-05-29 | 5806-124-0930 | ND |
| 2019-06-10 | 5806-148-1100 | ND |
| 2019-06-10 | 5806-151-1059 | ND |
| 2019-07-18 | 5806-109-0955 | ND |
| 2019-08-12 | 5806-117-1130 | ND |
| 2019-08-12 | 5806-149-1054 | ND |
| 2019-08-12 | 5806-154-1259 | ND |
| 2019-09-10 | 5806-146-0836 | ND |
| 2019-09-11 | 5806-143-0920 | ND |
| 2019-09-24 | 5806-055-1330 | ND |
| 2019-10-16 | 5806-052-1150 | ND |
| 2019-10-23 | 5701-018-0940 | ND |
| 2019-10-28 | 5806-150-1135 | ND |
| 2019-11-20 | 5806-108-0835 | ND |
| 2019-12-10 | 5806-119-0845 | ND |