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EWG's Tap Water Database — 2021 UPDATE

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Benzene

California American Water Company - Parkway

Benzene is a known human carcinogen. It also damages blood cells and the nervous system. Emissions from petroleum processing, hazardous waste landfills and underground storage tanks contaminate drinking water with benzene. Read More.

To protect against cancer risks, California set a public health goal for benzene in drinking water at 0.15 parts per billion, 30 times lower than the federal legal limit of 5 parts per billion.

Click here to read more about carcinogenic VOCs.

MORE ABOUT THIS CONTAMINANT

 

258

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND670ND
2015ND430ND
2016ND410ND
2017ND320ND
2018ND660ND
2019ND90ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.15 ppb

The EWG Health Guideline of 0.15 ppb for benzene 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) 5 ppb

The legal limit for benzene, established in 1987, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to benzene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-151225-003-1010ND
2014-01-221225-012-1210ND
2014-01-221225-029-1216ND
2014-01-221225-030-1218ND
2014-02-191225-013-1212ND
2014-02-191225-018-0930ND
2014-02-191225-024-1000ND
2014-02-191225-026-1048ND
2014-02-191225-034-1125ND
2014-02-201225-003-1158ND
2014-02-261225-012-1122ND
2014-02-261225-029-1132ND
2014-02-261225-030-1142ND
2014-03-111225-003-1025ND
2014-03-111225-012-1050ND
2014-03-111225-029-1057ND
2014-03-111225-030-1105ND
2014-04-021225-003-1130ND
2014-04-081225-012-1056ND
2014-04-081225-029-1102ND
2014-04-081225-030-1111ND
2014-05-071225-018-1135ND
2014-05-071225-024-1100ND
2014-05-071225-026-1120ND
2014-05-071225-034-1200ND
2014-05-081225-003-1110ND
2014-05-081225-012-0850ND
2014-05-081225-029-0855ND
2014-05-081225-030-0900ND
2014-05-131225-013-1330ND
2014-06-231225-003-1145ND
2014-06-251225-012-1010ND
2014-06-251225-029-1015ND
2014-06-251225-030-1020ND
2014-07-081225-003-1105ND
2014-08-041225-032-1120ND
2014-08-041225-033-1020ND
2014-08-041225-034-1315ND
2014-08-051225-021-1145ND
2014-08-051225-022-1155ND
2014-08-051225-023-1210ND
2014-08-051225-025-1225ND
2014-08-111225-006-1140ND
2014-08-111225-016-0930ND
2014-08-111225-018-1205ND
2014-08-111225-024-1225ND
2014-08-111225-026-1110ND
2014-08-121225-002-0950ND
2014-08-121225-008-0920ND
2014-08-121225-011-1110ND
2014-08-121225-014-1030ND
2014-08-121225-015-1150ND
2014-08-121225-017-1115ND
2014-08-141225-003-1130ND
2014-08-141225-013-0840ND
2014-09-101225-003-1305ND
2014-10-281225-003-1100ND
2014-11-241225-003-1020ND
2014-12-021225-018-1300ND
2014-12-021225-024-1240ND
2014-12-021225-026-1250ND
2014-12-021225-034-1230ND
2014-12-161225-013-1050ND
2014-12-181225-003-1020ND
2014-12-181225-012-1100ND
2014-12-181225-029-1105ND
2014-12-181225-030-1110ND
2015-01-271225-003-0935ND
2015-02-101225-013-1120ND
2015-02-101225-018-1020ND
2015-02-101225-024-1040ND
2015-02-101225-026-0950ND
2015-02-101225-034-1415ND
2015-02-111225-003-1003ND
2015-03-171225-003-1215ND
2015-04-131225-013-1140ND
2015-04-231225-018-0925ND
2015-04-231225-024-1020ND
2015-04-231225-026-0950ND
2015-04-231225-034-1040ND
2015-04-281225-003-1005ND
2015-05-281225-003-1235ND
2015-06-241225-003-0945ND
2015-07-151225-002-0940ND
2015-07-201225-003-1030ND
2015-07-201225-008-0930ND
2015-07-201225-013-0845ND
2015-07-201225-024-1150ND
2015-07-201225-034-1130ND
2015-07-221225-018-0925ND
2015-07-221225-026-1000ND
2015-08-111225-006-1500ND
2015-08-111225-015-0900ND
2015-08-111225-016-0915ND
2015-08-111225-017-0900ND
2015-08-111225-033-0925ND
2015-08-171225-003-1030ND
2015-08-171225-011-0950ND
2015-08-171225-014-1335ND
2015-08-191225-021-1030ND
2015-08-191225-022-1040ND
2015-08-191225-023-1055ND
2015-08-191225-032-1020ND
2015-09-151225-003-1000ND
2015-09-221225-025-1245ND
2015-10-261225-003-1320ND
2015-10-271225-018-1510ND
2015-10-271225-024-1420ND
2015-11-181225-003-1114ND
2015-12-021225-003-1203ND
2016-01-271225-003-1035ND
2016-02-101225-003-0958ND
2016-02-161225-018-0900ND
2016-02-161225-024-0850ND
2016-02-161225-034-0915ND
2016-03-221225-003-1043ND
2016-03-221225-026-1130ND
2016-04-111225-003-1052ND
2016-04-111225-018-1350ND
2016-04-111225-026-1320ND
2016-04-281225-034-1130ND
2016-05-101225-003-1132ND
2016-06-081225-003-1020ND
2016-06-141225-024-0815ND
2016-07-061225-002-0815ND
2016-07-061225-008-0737ND
2016-07-061225-011-0900ND
2016-07-061225-015-1040ND
2016-07-071225-003-0810ND
2016-07-121225-016-0915ND
2016-07-121225-017-0925ND
2016-07-121225-021-1015ND
2016-07-121225-022-1030ND
2016-07-121225-023-1000ND
2016-07-121225-025-1055ND
2016-07-121225-032-1120ND
2016-07-121225-033-0940ND
2016-07-251225-006-1150ND
2016-07-251225-018-1115ND
2016-07-251225-026-1130ND
2016-07-251225-034-1220ND
2016-07-271225-024-1130ND
2016-08-171225-003-1058ND
2016-09-151225-003-1103ND
2016-10-101225-018-0842ND
2016-10-101225-024-0900ND
2016-10-101225-026-0825ND
2016-10-101225-034-0910ND
2016-10-191225-003-1051ND
2016-11-081225-003-1230ND
2016-12-191225-003-1146ND
2017-02-131225-003-0911ND
2017-02-151225-018-0903ND
2017-02-151225-024-1233ND
2017-02-151225-034-0853ND
2017-04-111225-034-0908ND
2017-05-081225-024-1355ND
2017-05-091225-003-1145ND
2017-05-091225-018-0955ND
2017-08-151225-002-1125ND
2017-08-151225-003-1105ND
2017-08-151225-008-1200ND
2017-08-151225-011-1030ND
2017-08-151225-015-0950ND
2017-08-151225-016-0934ND
2017-08-151225-017-1012ND
2017-08-151225-033-0942ND
2017-08-161225-018-1223ND
2017-08-161225-021-0853ND
2017-08-161225-023-0933ND
2017-08-161225-024-1141ND
2017-08-161225-025-0953ND
2017-08-161225-026-1206ND
2017-08-161225-032-0843ND
2017-08-161225-034-1130ND
2017-09-281225-013-1150ND
2017-11-131225-003-1232ND
2017-11-131225-018-1125ND
2017-11-131225-024-1045ND
2017-11-131225-034-1030ND
2017-12-061225-006-0955ND
2017-12-061225-013-1030ND
2017-12-061225-014-1330ND
2018-01-101225-030-1110ND
2018-02-131225-022-0910ND
2018-02-141225-003-1052ND
2018-02-141225-012-1123ND
2018-02-141225-029-1127ND
2018-02-141225-030-1132ND
2018-02-191225-018-0930ND
2018-02-191225-024-0905ND
2018-02-191225-034-0920ND
2018-03-121225-012-1218ND
2018-03-121225-029-1222ND
2018-03-121225-030-1225ND
2018-03-301225-013-1200ND
2018-04-041225-012-1100ND
2018-04-041233-012-1100ND
2018-04-041233-029-1108ND
2018-04-041225-029-1110ND
2018-04-041225-030-1115ND
2018-04-041233-030-1115ND
2018-05-011225-003-1113ND
2018-05-031225-012-1005ND
2018-05-031233-012-1020ND
2018-05-031225-018-1000ND
2018-05-031225-024-1015ND
2018-05-031225-029-1013ND
2018-05-031233-029-1025ND
2018-05-031233-030-1030ND
2018-05-031225-034-0950ND
2018-06-181225-012-1225ND
2018-06-181225-029-1230ND
2018-06-191225-013-1315ND
2018-07-191233-012-1045ND
2018-07-191233-029-1050ND
2018-07-191233-030-1055ND
2018-08-081225-002-1110ND
2018-08-081233-012-1210ND
2018-08-081233-029-1215ND
2018-08-081233-030-1220ND
2018-08-091225-006-1140ND
2018-08-091225-016-0930ND
2018-08-091225-017-0835ND
2018-08-141225-008-1110ND
2018-08-141225-011-0900ND
2018-08-141225-013-1145ND
2018-08-141225-015-1020ND
2018-08-141225-021-1005ND
2018-08-141225-022-0910ND
2018-08-141225-023-0830ND
2018-08-141225-025-0740ND
2018-08-151225-018-1210ND
2018-08-151225-024-1250ND
2018-08-151225-026-1210ND
2018-08-151225-032-0905ND
2018-08-161225-033-0755ND
2018-09-181233-012-0935ND
2018-09-181233-029-0940ND
2018-09-181233-030-0945ND
2018-10-101233-012-1130ND
2018-10-101233-029-1135ND
2018-10-101233-030-1140ND
2018-11-061233-012-1340ND
2018-11-061233-029-1345ND
2018-11-061233-030-1350ND
2018-12-111233-012-1320ND
2018-12-111233-029-1325ND
2018-12-111233-030-1330ND
2019-01-171233-012-0820ND
2019-01-171233-029-0825ND
2019-01-171233-030-0830ND
2019-02-111225-034-1310ND
2019-02-181233-012-1315ND
2019-02-181233-029-1320ND
2019-02-181233-030-1325ND
2019-08-051225-033-1150ND
2019-08-061225-032-1050ND