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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

California Water Service (CWS) - Visalia

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).

MORE ABOUT THIS CONTAMINANT

 

163

Samples

0

Samples exceeding legal limit (MCL)

113

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.589 ppb155106ND - 2.70 ppb
20150.658 ppb660.280 ppb - 1.10 ppb
20160.770 ppb110.770 ppb
2017N/A00N/A
2018ND10ND
2019N/A00N/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
2014-04-01A4C1081-09A2.70 ppb
2014-04-01A4C1081-01A0.560 ppb
2014-04-01A4C1081-17A0.610 ppb
2014-04-01A4C1081-19A0.930 ppb
2014-04-03A4C1081-13A0.310 ppb
2014-04-07A4C1253-05A0.420 ppb
2014-04-08A4C1253-01A0.930 ppb
2014-04-08A4C1253-21A0.590 ppb
2014-04-13A4C1476-13A0.520 ppb
2014-04-13A4C1476-01A0.420 ppb
2014-04-15A4C1476-09A0.0320 ppb
2014-04-15A4C1476-17A0.930 ppb
2014-04-16A4C1476-19A0.640 ppb
2014-04-22A4C1796-05A0.470 ppb
2014-04-24A4C1796-01A0.390 ppb
2014-04-24A4C1796-13A0.460 ppb
2014-04-25A4C1796-09A0.630 ppb
2014-05-06A4C2018-09A0.890 ppb
2014-05-07A4C2018-13A1.000 ppb
2014-05-07A4C2018-17A0.640 ppb
2014-05-07A4C2018-01A2.10 ppb
2014-05-08A4C2018-05A1.10 ppb
2014-05-08A4C2018-21A0.870 ppb
2014-05-08A4C2018-33A0.670 ppb
2014-05-09A4C2018-25A2.60 ppb
2014-05-12A4D0061-17A1.80 ppb
2014-05-12A4D0061-05A0.870 ppb
2014-05-12A4D0061-13A0.910 ppb
2014-05-12A4D0061-21A0.640 ppb
2014-05-13A4D0061-01A0.920 ppb
2014-05-14A4D0061-09A0.760 ppb
2014-05-14A4D0061-29A1.20 ppb
2014-05-14A4D0061-27A0.820 ppb
2014-05-14A4D0061-25A0.950 ppb
2014-05-19A4D1188-05A0.160 ppb
2014-05-19A4D1188-13A0.660 ppb
2014-05-21A4D1188-17A0.690 ppb
2014-05-22A4D1188-09A0.860 ppb
2014-05-22A4D1188-19A0.910 ppb
2014-06-02A4D1544-05A0.750 ppb
2014-06-02A4D1544-01A0.720 ppb
2014-06-05A4D1544-09A1.60 ppb
2014-06-10A4E0756-01A0.220 ppb
2014-06-11A4D1544-13A1.10 ppb
2014-06-11A4E0756-17A0.360 ppb
2014-06-11A4E0756-21A1.20 ppb
2014-06-12A4E0756-05A0.940 ppb
2014-06-12A4E0756-13A1.60 ppb
2014-06-13A4E0756-09A0.850 ppb
2014-06-16A4E2267-01A0.700 ppb
2014-06-17A4E2264-01A0.430 ppb
2014-06-18A4E2262-01A1.10 ppb
2014-06-18A4E2269-01A0.740 ppb
2014-06-19A4E2265-01A0.400 ppb
2014-06-19A4E0756-19A1.000 ppb
2014-06-19A4D1544-21A0.330 ppb
2014-06-23A4F1344-01A0.350 ppb
2014-06-24A4F1344-05A0.210 ppb
2014-09-295810-016-1300ND
2014-09-295810-018-0800ND
2014-09-295810-026-0815ND
2014-09-295810-031-1440ND
2014-10-06A4I2143-01A0.930 ppb
2014-10-08A4I2149-01A0.460 ppb
2014-10-125810-027-1400ND
2014-10-135810-022-0932ND
2014-10-14A4J0086-01A0.980 ppb
2014-10-14A4J0089-01A0.530 ppb
2014-10-155810-014-08421.20 ppb
2014-10-19A4J1139-01A0.360 ppb
2014-10-20A4J1142-01A0.310 ppb
2014-10-22A4J1144-01A0.310 ppb
2014-10-22A4J1143-01A0.590 ppb
2014-10-245810-029-1225ND
2014-10-245810-030-1245ND
2014-10-245810-053-0900ND
2014-10-265810-093-0800ND
2014-10-27A4J1140-01A0.470 ppb
2014-10-28A4J1760-01A0.460 ppb
2014-10-28A4J1759-01A0.630 ppb
2014-10-305810-028-0855ND
2014-10-305810-058-1255ND
2014-10-305810-061-1245ND
2014-10-305810-091-1235ND
2014-10-305810-158-11001.70 ppb
2014-10-315810-046-1215ND
2014-10-315810-069-10101.60 ppb
2014-11-01A4J2319-01A0.0800 ppb
2014-11-02A4J2327-01A0.600 ppb
2014-11-035810-012-0950ND
2014-11-035810-024-0925ND
2014-11-035810-040-0930ND
2014-11-035810-045-1220ND
2014-11-035810-047-1220ND
2014-11-035810-065-0835ND
2014-11-035810-092-11102.10 ppb
2014-11-045810-037-1015ND
2014-11-045810-055-1225ND
2014-11-045810-159-12001.20 ppb
2014-11-055810-059-1205ND
2014-11-055810-156-0910ND
2014-11-055810-166-1000ND
2014-11-06A4J2332-01A0.830 ppb
2014-11-06A4J2333-01A0.810 ppb
2014-11-09A4J2695-01A0.820 ppb
2014-11-105810-060-0900ND
2014-11-11A4J2692-01A0.980 ppb
2014-11-125810-048-1205ND
2014-11-125810-057-0840ND
2014-11-125810-066-12551.20 ppb
2014-11-125810-090-1235ND
2014-11-135810-056-1150ND
2014-11-135810-098-1125ND
2014-11-135810-099-1130ND
2014-11-135810-179-1000ND
2014-11-165810-017-1245ND
2014-11-165810-035-0800ND
2014-11-165810-054-11001.50 ppb
2014-11-175810-023-0840ND
2014-11-175810-070-0810ND
2014-11-175810-087-1300ND
2014-11-175810-089-0945ND
2014-11-175810-178-1200ND
2014-11-185810-010-1240ND
2014-11-19A4K0482-01A0.830 ppb
2014-11-19A4J2701-01A0.760 ppb
2014-11-19A4J2702-01A0.710 ppb
2014-11-19A4K0486-01A0.210 ppb
2014-11-20A4K0483-01A0.230 ppb
2014-11-245810-067-0900ND
2014-11-245810-094-1245ND
2014-11-255810-003-0940ND
2014-11-255810-015-1230ND
2014-11-255810-080-13001.80 ppb
2014-11-30A4K1839-01A1.20 ppb
2014-12-01A4K1842-01A1.80 ppb
2014-12-025810-044-0925ND
2014-12-025810-081-11301.40 ppb
2014-12-025810-177-1255ND
2014-12-03A4K1838-01A0.830 ppb
2014-12-03A4K1846-01A0.610 ppb
2014-12-03A4K1845-01A0.690 ppb
2014-12-08A4K2207-01A1.60 ppb
2014-12-08A4K2083-01A0.470 ppb
2014-12-08A4K2085-01A0.230 ppb
2014-12-09A4K2212-01A1.70 ppb
2014-12-09A4K2208-01A0.670 ppb
2014-12-09A4K2214-01A0.900 ppb
2014-12-10A4K2211-01A0.890 ppb
2014-12-10A4K2217-01A0.460 ppb
2014-12-10A4K2216-01A0.820 ppb
2014-12-11A4K2209-01A0.530 ppb
2014-12-12A4K2210-01A0.740 ppb
2014-12-155810-182-10152.40 ppb
2014-12-165810-076-0933ND
2015-04-16201504170412AM0.280 ppb
2015-04-16201504170368AM0.480 ppb
2015-04-235810-167-10201.10 ppb
2015-07-06201507070578AM1.000 ppb
2015-12-16201512170412AM0.330 ppb
2015-12-20201512230704AM0.760 ppb
2016-01-12201601130624AM0.770 ppb
2018-08-219590-089-1235ND