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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

San Bernardino City

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.

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177

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20131.15 ppb36360.320 ppb - 2.30 ppb
20141.33 ppb8864ND - 3.90 ppb
2015N/A00N/A
2016N/A00N/A
2017ND490ND
2018ND20ND
2019ND20ND

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
2013-07-17201307170686AM1.20 ppb
2013-07-17201307170654AM0.960 ppb
2013-07-17201307170646AM0.770 ppb
2013-07-17201307170656AM2.30 ppb
2013-07-17201307170684AM1.80 ppb
2013-07-17201307170676AM1.60 ppb
2013-07-17201307170648AM1.20 ppb
2013-07-17201307170652AM0.940 ppb
2013-07-17201307170699AM1.30 ppb
2013-07-17201307170701AM0.410 ppb
2013-07-17201307170693AM1.60 ppb
2013-07-17201307170697AM1.20 ppb
2013-07-17201307170695AM1.50 ppb
2013-07-17201307170682AM1.60 ppb
2013-07-17201307170680AM1.50 ppb
2013-07-17201307170658AM0.960 ppb
2013-07-17201307170650AM1.000 ppb
2013-07-17201307170678AM1.10 ppb
2013-07-18201307180867AM0.730 ppb
2013-07-18201307180873AM0.550 ppb
2013-07-18201307180865AM0.970 ppb
2013-07-18201307180855AM2.10 ppb
2013-07-18201307180861AM1.40 ppb
2013-07-18201307180869AM0.350 ppb
2013-07-18201307180871AM0.540 ppb
2013-07-18201307180863AM1.80 ppb
2013-07-18201307180840AM0.320 ppb
2013-07-18201307180838AM0.960 ppb
2013-07-18201307180853AM1.20 ppb
2013-07-18201307180844AM0.560 ppb
2013-07-18201307180842AM0.630 ppb
2013-07-18201307180847AM1.60 ppb
2013-07-18201307180849AM1.70 ppb
2013-07-18201307180851AM1.30 ppb
2013-07-18201307180857AM1.30 ppb
2013-07-18201307180859AM0.520 ppb
2014-01-22201401220681AM2.90 ppb
2014-01-22201401220703AM0.950 ppb
2014-01-22201401220689AM2.70 ppb
2014-01-22201401220705AM2.20 ppb
2014-01-22201401220701AM1.80 ppb
2014-01-22201401220687AM2.00 ppb
2014-01-22201401220683AM2.60 ppb
2014-01-22201401220709AM0.550 ppb
2014-01-22201401220715AM1.000 ppb
2014-01-22201401220713AM2.40 ppb
2014-01-22201401220711AM2.70 ppb
2014-01-22201401220707AM2.60 ppb
2014-01-22201401220693AM2.40 ppb
2014-01-22201401220699AM2.40 ppb
2014-01-22201401220691AM0.780 ppb
2014-01-22201401220685AM2.20 ppb
2014-01-22201401220697AM2.20 ppb
2014-01-22201401220695AM0.930 ppb
2014-01-23201401230620AM1.50 ppb
2014-01-23201401230622AM1.20 ppb
2014-01-23201401230628AM0.320 ppb
2014-01-23201401230649AM2.10 ppb
2014-01-23201401230624AMND
2014-01-23201401230657AM1.70 ppb
2014-01-23201401230626AM0.470 ppb
2014-01-23201401230671AM0.460 ppb
2014-01-23201401230661AM1.60 ppb
2014-01-23201401230669AMND
2014-01-23201401230659AM1.60 ppb
2014-01-23201401230667AM1.90 ppb
2014-01-23201401230663AM1.80 ppb
2014-01-23201401230673AM0.410 ppb
2014-01-23201401230665AM1.50 ppb
2014-01-23201401230651AM0.950 ppb
2014-01-23201401230655AM1.70 ppb
2014-01-23201401230653AM1.60 ppb
2014-03-104790-030-0820ND
2014-07-294790-001-05483.30 ppb
2014-07-294790-002-0850ND
2014-07-294790-003-08401.30 ppb
2014-07-294790-005-12101.20 ppb
2014-07-294790-007-09203.90 ppb
2014-07-294790-014-06471.60 ppb
2014-07-294790-015-1421ND
2014-07-294790-017-1308ND
2014-07-294790-018-1255ND
2014-07-294790-021-11201.20 ppb
2014-07-294790-022-11001.50 ppb
2014-07-294790-023-1039ND
2014-07-294790-024-1034ND
2014-07-294790-030-0820ND
2014-07-294790-032-0955ND
2014-07-294790-034-07051.20 ppb
2014-07-294790-035-1150ND
2014-07-294790-036-0540ND
2014-07-294790-037-11351.000 ppb
2014-07-294790-038-0900ND
2014-07-294790-039-0842ND
2014-07-294790-040-0825ND
2014-07-294790-041-0910ND
2014-07-294790-043-06101.80 ppb
2014-07-294790-049-06452.80 ppb
2014-07-294790-051-1440ND
2014-07-294790-053-10302.50 ppb
2014-07-294790-054-1335ND
2014-07-294790-055-0956ND
2014-07-294790-056-1007ND
2014-07-294790-062-1355ND
2014-07-294790-063-1233ND
2014-07-294790-064-13303.40 ppb
2014-07-294790-065-13153.50 ppb
2014-07-294790-066-13002.00 ppb
2014-07-294790-067-12452.20 ppb
2014-07-294790-068-12302.00 ppb
2014-07-294790-069-13452.20 ppb
2014-07-294790-113-08052.30 ppb
2014-07-294790-114-07502.00 ppb
2014-07-294790-115-07351.60 ppb
2014-07-294790-116-07201.50 ppb
2014-07-294790-117-07002.30 ppb
2014-07-294790-118-07353.20 ppb
2014-07-294790-119-07571.40 ppb
2014-07-294790-126-06151.40 ppb
2014-09-054790-008-11211.60 ppb
2014-09-054790-052-10501.10 ppb
2014-10-294790-009-15001.40 ppb
2014-10-294790-031-1509ND
2014-12-014790-012-14102.40 ppb
2017-07-269590-002-0735ND
2017-07-269590-003-0805ND
2017-07-269590-005-0828ND
2017-07-269590-007-0630ND
2017-07-269590-008-1143ND
2017-07-269590-009-1127ND
2017-07-269590-030-0830ND
2017-07-269590-031-1106ND
2017-07-269590-032-0710ND
2017-07-269590-035-0710ND
2017-07-269590-036-0630ND
2017-07-269590-037-0803ND
2017-07-269590-049-0900ND
2017-07-269590-052-1212ND
2017-07-269590-065-1030ND
2017-07-269590-066-1005ND
2017-07-269590-067-0930ND
2017-07-269590-068-0906ND
2017-07-269590-113-1100ND
2017-07-269590-114-1030ND
2017-07-269590-115-1000ND
2017-07-269590-116-0942ND
2017-07-269590-117-0927ND
2017-07-279590-001-0615ND
2017-07-279590-015-1120ND
2017-07-279590-017-0830ND
2017-07-279590-018-0800ND
2017-07-279590-021-0630ND
2017-07-279590-022-0915ND
2017-07-279590-023-0805ND
2017-07-279590-024-0839ND
2017-07-279590-025-0730ND
2017-07-279590-034-0720ND
2017-07-279590-038-1201ND
2017-07-279590-040-1110ND
2017-07-279590-041-1140ND
2017-07-279590-043-0650ND
2017-07-279590-051-1045ND
2017-07-279590-054-0930ND
2017-07-279590-056-0658ND
2017-07-279590-062-1000ND
2017-07-279590-063-0850ND
2017-07-279590-118-0958ND
2017-07-279590-119-1030ND
2017-08-029590-012-0930ND
2017-08-029590-014-1040ND
2017-08-029590-039-1320ND
2017-08-029590-053-1400ND
2017-08-299590-069-1110ND
2018-01-129590-055-0830ND
2018-02-079590-064-1130ND
2019-08-094790-117-0945ND
2019-12-044790-024-0845ND