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EWG's Tap Water Database — 2021 UPDATE

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Arsenic

San Bernardino City

Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

MORE ABOUT THIS CONTAMINANT

 

444

Samples

3

Samples exceeding legal limit (MCL)

176

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.805 ppb7914ND - 6.20 ppb
20151.95 ppb3712ND - 14.0 ppb
20162.48 ppb97ND - 4.90 ppb
20172.08 ppb13552ND - 15.0 ppb
20182.08 ppb11656ND - 9.00 ppb
20192.18 ppb6835ND - 9.70 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.004 ppb

The EWG Health Guideline of 0.004 ppb for arsenic 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.

EPA Maximum Contaminant
Level (MCL) 10 ppb

The legal limit for arsenic, established in 2001, was based on costs for arsenic removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to arsenic exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-074790-001-0829ND
2014-01-074790-043-07306.20 ppb
2014-02-044790-001-0720ND
2014-02-044790-043-0738ND
2014-03-104790-030-0820ND
2014-03-274790-001-1315ND
2014-03-274790-043-1400ND
2014-04-014790-001-0750ND
2014-04-014790-043-0804ND
2014-04-084790-034-07304.00 ppb
2014-04-084790-041-0955ND
2014-04-084790-067-1415ND
2014-05-084790-001-07404.50 ppb
2014-05-084790-043-0909ND
2014-06-034790-001-07294.20 ppb
2014-06-034790-043-07435.80 ppb
2014-07-084790-001-07184.20 ppb
2014-07-084790-043-07306.10 ppb
2014-07-294790-001-05484.00 ppb
2014-07-294790-002-0850ND
2014-07-294790-003-0840ND
2014-07-294790-005-1210ND
2014-07-294790-007-0920ND
2014-07-294790-014-0647ND
2014-07-294790-015-1421ND
2014-07-294790-017-1308ND
2014-07-294790-018-1255ND
2014-07-294790-021-1120ND
2014-07-294790-022-1100ND
2014-07-294790-023-1039ND
2014-07-294790-024-1034ND
2014-07-294790-030-0820ND
2014-07-294790-032-0955ND
2014-07-294790-034-07054.50 ppb
2014-07-294790-035-1150ND
2014-07-294790-036-0540ND
2014-07-294790-037-1135ND
2014-07-294790-038-0900ND
2014-07-294790-039-0842ND
2014-07-294790-040-0825ND
2014-07-294790-041-0910ND
2014-07-294790-043-06105.90 ppb
2014-07-294790-049-0645ND
2014-07-294790-051-1440ND
2014-07-294790-053-10302.90 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
2014-07-294790-064-1330ND
2014-07-294790-065-1315ND
2014-07-294790-066-1300ND
2014-07-294790-067-1245ND
2014-07-294790-068-1230ND
2014-07-294790-069-1345ND
2014-07-294790-113-0805ND
2014-07-294790-114-0750ND
2014-07-294790-115-0735ND
2014-07-294790-116-0720ND
2014-07-294790-117-0700ND
2014-07-294790-118-0735ND
2014-07-294790-119-0757ND
2014-07-294790-126-0615ND
2014-08-054790-001-07403.50 ppb
2014-08-054790-043-0809ND
2014-09-054790-008-1121ND
2014-09-054790-052-1050ND
2014-10-074790-001-07304.30 ppb
2014-10-074790-043-0800ND
2014-10-214790-034-08353.50 ppb
2014-10-214790-041-1010ND
2014-10-214790-067-1323ND
2014-10-294790-009-1500ND
2014-10-294790-031-1509ND
2014-11-204790-053-1237ND
2014-12-014790-012-1410ND
2014-12-024790-001-0748ND
2014-12-024790-043-0735ND
2015-01-064790-001-0755ND
2015-01-064790-043-0745ND
2015-01-134790-034-09204.90 ppb
2015-01-134790-067-1325ND
2015-02-174790-001-0810ND
2015-02-174790-043-0834ND
2015-03-044790-001-0737ND
2015-03-044790-043-0747ND
2015-03-104790-001-0745ND
2015-03-104790-043-0754ND
2015-04-074790-001-0727ND
2015-04-074790-043-0840ND
2015-04-144790-053-10453.00 ppb
2015-04-284790-034-09004.60 ppb
2015-04-284790-041-1116ND
2015-04-284790-067-1330ND
2015-04-294790-053-081814.0 ppb
2015-05-124790-001-0810ND
2015-05-124790-043-0823ND
2015-05-214790-053-10508.80 ppb
2015-06-094790-001-08083.30 ppb
2015-06-114790-043-0850ND
2015-07-074790-001-0745ND
2015-07-074790-043-0800ND
2015-07-234790-053-13308.30 ppb
2015-07-284790-034-07424.60 ppb
2015-07-284790-041-1008ND
2015-07-284790-067-1320ND
2015-08-114790-001-08262.60 ppb
2015-09-044790-001-08004.40 ppb
2015-09-284790-043-0755ND
2015-10-064790-001-1159ND
2015-10-064790-043-1208ND
2015-10-134790-034-07354.80 ppb
2015-10-134790-041-1030ND
2015-10-134790-067-1330ND
2015-10-144790-053-10308.80 ppb
2016-01-264790-034-07364.40 ppb
2016-01-264790-041-1420ND
2016-04-124790-034-09122.00 ppb
2016-04-124790-041-1433ND
2016-07-264790-034-08282.90 ppb
2016-07-284790-041-13432.10 ppb
2016-10-254790-034-13134.90 ppb
2016-10-254790-041-11502.00 ppb
2016-12-084790-067-09004.00 ppb
2017-01-249590-001-07596.60 ppb
2017-01-249590-043-075215.0 ppb
2017-01-319590-001-11416.30 ppb
2017-01-314790-001-11436.20 ppb
2017-01-319590-034-07335.90 ppb
2017-01-319590-041-13592.10 ppb
2017-01-319590-067-1034ND
2017-02-079590-001-14057.10 ppb
2017-02-089590-043-094011.0 ppb
2017-02-089590-043-095010.00 ppb
2017-02-089590-043-10309.80 ppb
2017-02-089590-043-14508.60 ppb
2017-02-149590-001-08005.90 ppb
2017-03-079590-001-08085.80 ppb
2017-03-149590-001-08044.50 ppb
2017-03-219590-001-08182.10 ppb
2017-03-289590-001-0811ND
2017-03-289590-043-15003.70 ppb
2017-04-049590-001-0808ND
2017-04-119590-001-07302.20 ppb
2017-04-189590-001-0805ND
2017-04-189590-034-07454.90 ppb
2017-04-189590-041-1332ND
2017-04-189590-067-0956ND
2017-04-259590-001-06403.50 ppb
2017-05-029590-001-07404.50 ppb
2017-05-109590-001-0805ND
2017-05-169590-001-0800ND
2017-05-229590-043-1510ND
2017-05-259590-001-08154.90 ppb
2017-05-309590-001-07105.10 ppb
2017-07-069590-001-07424.70 ppb
2017-07-069590-043-07514.50 ppb
2017-07-119590-001-07304.70 ppb
2017-07-119590-043-07414.20 ppb
2017-07-189590-001-09154.90 ppb
2017-07-189590-043-10195.10 ppb
2017-07-259590-001-07304.40 ppb
2017-07-259590-043-07404.30 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
2017-07-279590-001-06154.80 ppb
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
2017-07-279590-034-07204.90 ppb
2017-07-279590-038-1201ND
2017-07-279590-040-1110ND
2017-07-279590-041-1140ND
2017-07-279590-043-06504.70 ppb
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
2017-08-019590-001-07374.40 ppb
2017-08-019590-043-07544.90 ppb
2017-08-029590-012-0930ND
2017-08-029590-014-1040ND
2017-08-029590-039-1320ND
2017-08-029590-053-1400ND
2017-08-089590-001-07354.80 ppb
2017-08-089590-043-07505.10 ppb
2017-08-159590-001-07384.50 ppb
2017-08-159590-043-07455.00 ppb
2017-08-229590-001-07405.40 ppb
2017-08-229590-043-07516.30 ppb
2017-08-299590-001-06305.00 ppb
2017-08-299590-043-07005.80 ppb
2017-08-299590-069-1110ND
2017-09-059590-001-07454.60 ppb
2017-09-059590-043-1147ND
2017-09-129590-001-07205.00 ppb
2017-09-129590-043-1311ND
2017-09-199590-001-07405.20 ppb
2017-09-199590-043-0842ND
2017-09-269590-001-08004.30 ppb
2017-09-269590-043-0842ND
2017-10-039590-001-0729ND
2017-10-039590-043-07162.20 ppb
2017-10-109590-001-0759ND
2017-10-109590-043-07455.00 ppb
2017-10-179590-001-0825ND
2017-10-179590-034-08525.00 ppb
2017-10-179590-041-1411ND
2017-10-179590-043-07505.80 ppb
2017-10-179590-067-1003ND
2017-10-249590-001-0801ND
2017-10-249590-043-07505.20 ppb
2017-10-319590-001-0753ND
2017-10-319590-043-0823ND
2017-11-079590-001-0750ND
2017-11-079590-043-1441ND
2017-11-149590-001-0810ND
2017-11-159590-043-1550ND
2017-11-219590-001-0715ND
2017-11-219590-043-1156ND
2017-11-289590-001-0750ND
2017-11-289590-043-0805ND
2017-12-059590-001-0745ND
2017-12-059590-043-0800ND
2017-12-129590-001-0752ND
2017-12-129590-043-0808ND
2017-12-199590-001-0735ND
2017-12-199590-043-0849ND
2017-12-279590-001-0743ND
2017-12-279590-043-0754ND
2018-01-039590-001-0744ND
2018-01-039590-043-0737ND
2018-01-099590-001-07553.60 ppb
2018-01-099590-043-0820ND
2018-01-129590-055-0830ND
2018-01-169590-001-07494.90 ppb
2018-01-169590-043-0800ND
2018-01-239590-001-0801ND
2018-01-239590-034-07415.60 ppb
2018-01-239590-041-14362.00 ppb
2018-01-239590-043-0820ND
2018-01-239590-067-0928ND
2018-01-309590-001-0719ND
2018-01-309590-043-0825ND
2018-02-069590-001-0742ND
2018-02-069590-043-0755ND
2018-02-079590-064-1130ND
2018-02-139590-001-0825ND
2018-02-139590-043-0836ND
2018-02-209590-001-0826ND
2018-02-209590-043-0839ND
2018-02-279590-001-0827ND
2018-02-279590-043-08372.00 ppb
2018-03-069590-001-0813ND
2018-03-069590-043-0823ND
2018-03-139590-001-0838ND
2018-03-139590-043-0848ND
2018-03-209590-001-0825ND
2018-03-209590-043-08373.10 ppb
2018-03-279590-001-0820ND
2018-03-279590-043-08384.30 ppb
2018-04-039590-001-0930ND
2018-04-039590-043-09445.40 ppb
2018-04-109590-001-0822ND
2018-04-109590-043-14486.40 ppb
2018-04-179590-001-07524.20 ppb
2018-04-179590-043-07405.00 ppb
2018-04-249590-001-0854ND
2018-04-249590-034-08004.50 ppb
2018-04-249590-041-14142.20 ppb
2018-04-249590-043-0818ND
2018-04-249590-067-1057ND
2018-05-019590-001-0818ND
2018-05-019590-043-0828ND
2018-05-109590-001-0730ND
2018-05-109590-043-0815ND
2018-05-159590-001-0805ND
2018-05-159590-043-0820ND
2018-05-239590-001-07123.00 ppb
2018-05-239590-043-0755ND
2018-05-309590-001-07093.40 ppb
2018-05-309590-043-0749ND
2018-06-059590-001-07393.80 ppb
2018-06-059590-043-0720ND
2018-06-139590-001-07064.90 ppb
2018-06-139590-043-07135.20 ppb
2018-06-199590-001-07305.30 ppb
2018-06-199590-043-07456.30 ppb
2018-06-269590-001-07404.70 ppb
2018-06-269590-043-07505.20 ppb
2018-07-034790-001-08003.90 ppb
2018-07-034790-043-08104.50 ppb
2018-07-104790-001-07504.60 ppb
2018-07-104790-043-08054.70 ppb
2018-07-174790-001-07494.50 ppb
2018-07-174790-043-08204.60 ppb
2018-07-244790-001-08004.20 ppb
2018-07-244790-034-08554.60 ppb
2018-07-244790-041-13532.40 ppb
2018-07-244790-043-0817ND
2018-07-244790-067-1305ND
2018-07-314790-001-07354.20 ppb
2018-07-314790-043-07454.40 ppb
2018-08-074790-001-08004.10 ppb
2018-08-074790-043-08144.40 ppb
2018-08-144790-001-08003.30 ppb
2018-08-144790-043-08113.90 ppb
2018-08-214790-001-07484.30 ppb
2018-08-214790-043-07594.50 ppb
2018-08-284790-001-07253.60 ppb
2018-08-284790-043-0944ND
2018-09-054790-001-08104.70 ppb
2018-09-054790-043-0900ND
2018-09-114790-001-0801ND
2018-09-114790-043-07453.50 ppb
2018-09-184790-001-0830ND
2018-09-184790-043-08153.50 ppb
2018-09-264790-001-0808ND
2018-09-264790-043-07503.70 ppb
2018-10-024790-001-0808ND
2018-10-024790-043-07503.70 ppb
2018-10-094790-001-0820ND
2018-10-094790-034-08503.80 ppb
2018-10-094790-041-1355ND
2018-10-094790-043-07503.90 ppb
2018-10-094790-067-1046ND
2018-10-164790-001-0802ND
2018-10-164790-043-07424.70 ppb
2018-10-234790-001-0835ND
2018-10-234790-043-08204.50 ppb
2018-10-304790-001-08112.50 ppb
2018-10-304790-043-07574.30 ppb
2018-11-134790-001-0808ND
2018-11-134790-043-0824ND
2018-11-204790-001-0830ND
2018-11-204790-043-08503.50 ppb
2018-11-274790-001-0819ND
2018-11-274790-043-08002.70 ppb
2018-12-044790-001-0836ND
2018-12-044790-043-0826ND
2018-12-114790-001-0821ND
2018-12-114790-043-08055.50 ppb
2018-12-184790-001-0822ND
2018-12-184790-043-08428.40 ppb
2018-12-274790-001-0734ND
2018-12-274790-043-08089.00 ppb
2019-01-034790-001-0821ND
2019-01-034790-043-08387.10 ppb
2019-01-084790-001-0819ND
2019-01-084790-043-08389.70 ppb
2019-01-154790-001-0810ND
2019-01-224790-001-0805ND
2019-01-294790-001-0820ND
2019-01-294790-041-1412ND
2019-01-294790-067-1220ND
2019-02-054790-001-0815ND
2019-02-124790-001-0745ND
2019-02-204790-001-0810ND
2019-02-264790-001-0820ND
2019-03-054790-001-0750ND
2019-03-124790-001-08102.50 ppb
2019-03-204790-001-0813ND
2019-03-264790-001-08003.10 ppb
2019-04-024790-001-07563.20 ppb
2019-04-094790-001-08083.90 ppb
2019-04-164790-001-07554.00 ppb
2019-04-164790-041-14042.10 ppb
2019-04-164790-067-1240ND
2019-04-234790-001-07503.20 ppb
2019-04-304790-001-07403.50 ppb
2019-05-064790-001-07452.60 ppb
2019-05-144790-001-08153.00 ppb
2019-05-204790-001-08204.40 ppb
2019-05-294790-001-08074.50 ppb
2019-06-044790-043-15408.80 ppb
2019-06-114790-001-07483.20 ppb
2019-06-184790-001-07524.00 ppb
2019-06-254790-001-07302.80 ppb
2019-06-284790-043-14318.10 ppb
2019-07-024790-001-07453.40 ppb
2019-07-094790-001-07383.90 ppb
2019-07-164790-001-07424.40 ppb
2019-07-234790-001-07263.90 ppb
2019-07-304790-034-08004.80 ppb
2019-07-304790-041-1340ND
2019-07-304790-043-14038.70 ppb
2019-07-304790-067-1240ND
2019-08-064790-001-07453.40 ppb
2019-08-094790-117-0945ND
2019-08-134790-001-07403.70 ppb
2019-08-204790-001-07543.70 ppb
2019-08-274790-001-07153.80 ppb
2019-09-034790-001-07444.00 ppb
2019-09-104790-001-07503.20 ppb
2019-09-174790-001-07503.30 ppb
2019-09-244790-001-07423.80 ppb
2019-10-014790-001-0827ND
2019-10-084790-001-0825ND
2019-10-154790-001-0818ND
2019-10-154790-034-07584.50 ppb
2019-10-154790-041-13302.30 ppb
2019-10-154790-067-1240ND
2019-10-224790-001-0826ND
2019-10-294790-001-0820ND
2019-11-044790-001-0824ND
2019-11-134790-001-0811ND
2019-11-194790-001-0816ND
2019-11-254790-043-1436ND
2019-11-264790-001-0807ND
2019-12-034790-001-0800ND
2019-12-044790-024-0845ND
2019-12-104790-001-0827ND
2019-12-174790-001-0826ND
2019-12-264790-001-1445ND