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EWG's Tap Water Database — 2021 UPDATE

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Toluene

Chino Basin Desalter Authority - Desalter 1

Toluene is a volatile solvent that harms the nervous and immune systems, damages the liver and may increase the risk of miscarriage and birth defects. Read More.

Toluene is a petroleum-derived chemical found in gasoline and used as a solvent in paints, adhesives and cleaning supplies. Toluene is highly neurotoxic. Exposure can cause fatigue and nausea, and may lead to nervous system disorders.

MORE ABOUT THIS CONTAMINANT

 

230

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND340ND
2015ND390ND
2016ND340ND
2017ND360ND
2018ND470ND
2019ND400ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 150 ppb

The EWG Health Guideline of 150 ppb for toluene 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 1,000 ppb

The legal limit for toluene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-214790-021-1400ND
2014-04-084790-002-0700ND
2014-04-084790-009-0845ND
2014-04-084790-010-0900ND
2014-04-084790-011-0915ND
2014-06-184790-021-1036ND
2014-07-024790-001-0845ND
2014-07-024790-002-0745ND
2014-07-024790-004-0600ND
2014-07-084790-002-0920ND
2014-07-084790-009-1000ND
2014-07-084790-010-0950ND
2014-07-084790-011-1020ND
2014-07-084790-016-0648ND
2014-07-084790-020-0654ND
2014-07-094790-005-0645ND
2014-07-094790-006-0845ND
2014-07-094790-007-0915ND
2014-07-094790-008-0745ND
2014-07-164790-009-0600ND
2014-07-164790-010-0700ND
2014-07-164790-011-0800ND
2014-07-164790-013-0915ND
2014-07-234790-015-0600ND
2014-07-234790-020-0904ND
2014-08-134790-014-0900ND
2014-09-094790-021-0844ND
2014-10-144790-002-0755ND
2014-10-144790-009-0825ND
2014-10-144790-010-0840ND
2014-10-144790-011-0900ND
2014-10-144790-016-0950ND
2014-10-144790-020-0920ND
2014-12-304790-021-1035ND
2015-01-124790-002-0725ND
2015-01-124790-009-0810ND
2015-01-124790-010-0822ND
2015-01-124790-011-0835ND
2015-01-124790-016-0715ND
2015-01-124790-020-0936ND
2015-03-104790-021-1020ND
2015-04-144790-002-0725ND
2015-04-144790-009-0826ND
2015-04-144790-010-0817ND
2015-04-144790-011-0800ND
2015-04-144790-016-0805ND
2015-04-144790-020-0830ND
2015-07-014790-001-0910ND
2015-07-014790-002-0830ND
2015-07-014790-004-1014ND
2015-07-084790-005-0730ND
2015-07-084790-008-0820ND
2015-07-084790-009-0915ND
2015-07-084790-010-1020ND
2015-07-084790-011-1123ND
2015-07-144790-002-0725ND
2015-07-144790-009-0755ND
2015-07-144790-010-0810ND
2015-07-144790-011-0825ND
2015-07-144790-016-0708ND
2015-07-144790-020-0630ND
2015-07-154790-020-0730ND
2015-07-154790-021-0650ND
2015-07-154790-021-0730ND
2015-07-224790-006-1120ND
2015-07-224790-007-1045ND
2015-07-224790-013-0945ND
2015-07-224790-014-0853ND
2015-10-134790-002-0805ND
2015-10-134790-009-0745ND
2015-10-134790-010-0735ND
2015-10-134790-011-0720ND
2015-10-134790-020-0705ND
2016-01-144790-002-0808ND
2016-01-144790-009-0825ND
2016-01-144790-010-0830ND
2016-01-144790-011-0845ND
2016-01-144790-016-0822ND
2016-04-044790-015-0945ND
2016-04-124790-002-1110ND
2016-04-124790-009-0737ND
2016-04-124790-010-0748ND
2016-04-124790-011-0758ND
2016-04-124790-016-0658ND
2016-04-124790-020-0640ND
2016-07-064790-005-0600ND
2016-07-064790-008-0650ND
2016-07-064790-009-0800ND
2016-07-064790-010-0910ND
2016-07-124790-002-0711ND
2016-07-124790-009-0735ND
2016-07-124790-010-0805ND
2016-07-124790-011-0818ND
2016-07-134790-006-0700ND
2016-07-134790-007-0630ND
2016-07-134790-021-0800ND
2016-07-204790-011-0700ND
2016-07-204790-013-0800ND
2016-07-204790-014-0900ND
2016-07-204790-020-1000ND
2016-07-274790-001-0700ND
2016-07-274790-002-0730ND
2016-07-274790-004-0845ND
2016-10-114790-002-0946ND
2016-10-114790-009-1120ND
2016-10-114790-010-1140ND
2016-10-114790-011-1155ND
2017-01-104790-002-0830ND
2017-01-104790-009-0900ND
2017-01-104790-010-0905ND
2017-01-104790-011-0920ND
2017-01-104790-016-0908ND
2017-01-104790-020-0820ND
2017-04-114790-009-0630ND
2017-04-114790-010-0636ND
2017-04-114790-011-0647ND
2017-04-114790-016-0645ND
2017-04-114790-020-0601ND
2017-04-114790-021-0815ND
2017-07-114790-009-0800ND
2017-07-114790-010-0810ND
2017-07-114790-011-0820ND
2017-07-114790-016-0750ND
2017-07-114790-020-0705ND
2017-07-114790-021-1045ND
2017-07-124790-020-0600ND
2017-07-124790-023-0930ND
2017-07-124790-024-0630ND
2017-07-194790-011-0530ND
2017-07-194790-013-0630ND
2017-07-194790-014-0730ND
2017-07-194790-015-0830ND
2017-07-264790-006-0900ND
2017-07-264790-021-0700ND
2017-08-024790-004-0815ND
2017-08-184790-001-1100ND
2017-08-184790-007-1010ND
2017-10-104790-009-0920ND
2017-10-104790-010-0940ND
2017-10-104790-011-0955ND
2017-10-104790-016-0815ND
2017-10-104790-020-0735ND
2017-10-104790-021-1225ND
2018-01-094790-016-0900ND
2018-01-094790-020-0720ND
2018-01-164790-002-0830ND
2018-01-164790-009-0915ND
2018-01-164790-010-0930ND
2018-01-164790-021-1200ND
2018-04-104790-002-0705ND
2018-04-104790-010-0915ND
2018-04-104790-016-1310ND
2018-04-104790-021-1120ND
2018-04-194790-020-0855ND
2018-07-104790-002-0810ND
2018-07-104790-009-0950ND
2018-07-104790-010-1010ND
2018-07-104790-016-0840ND
2018-07-104790-020-0800ND
2018-07-104790-021-0925ND
2018-07-114790-011-0920ND
2018-07-124790-006-0930ND
2018-07-124790-007-1050ND
2018-07-124790-021-0700ND
2018-07-174790-005-0830ND
2018-07-174790-008-0715ND
2018-07-174790-009-1015ND
2018-07-174790-010-1100ND
2018-07-244790-011-0635ND
2018-07-244790-014-0800ND
2018-07-244790-015-0900ND
2018-07-314790-001-0445ND
2018-07-314790-002-0530ND
2018-07-314790-004-0830ND
2018-08-034790-013-1445ND
2018-08-074790-023-0945ND
2018-08-074790-024-1030ND
2018-08-144790-020-0730ND
2018-09-114790-002-0900ND
2018-09-114790-009-0930ND
2018-09-114790-010-0950ND
2018-09-114790-011-1000ND
2018-09-114790-021-0740ND
2018-10-094790-002-1042ND
2018-10-094790-010-0713ND
2018-10-094790-016-0905ND
2018-10-094790-020-0911ND
2018-10-104790-011-1130ND
2018-10-104790-021-1340ND
2018-10-114790-009-1215ND
2019-01-084790-002-1030ND
2019-01-084790-009-0950ND
2019-01-084790-010-0940ND
2019-01-084790-011-0920ND
2019-01-084790-020-1015ND
2019-01-084790-021-1215ND
2019-04-094790-002-0820ND
2019-04-094790-009-0930ND
2019-04-094790-010-0940ND
2019-04-094790-011-0955ND
2019-04-094790-021-0730ND
2019-04-104790-020-1445ND
2019-04-124790-020-1430ND
2019-07-094790-002-1010ND
2019-07-094790-009-0730ND
2019-07-094790-010-0745ND
2019-07-094790-020-0818ND
2019-07-094790-021-0715ND
2019-07-104790-001-1015ND
2019-07-104790-002-0915ND
2019-07-104790-004-1100ND
2019-07-164790-011-0845ND
2019-07-174790-005-0745ND
2019-07-174790-008-0830ND
2019-07-174790-009-0900ND
2019-07-174790-010-0800ND
2019-07-244790-013-0930ND
2019-07-244790-014-0900ND
2019-07-244790-015-1000ND
2019-07-314790-006-1000ND
2019-07-314790-007-0900ND
2019-07-314790-021-0945ND
2019-08-074790-023-0800ND
2019-08-074790-024-0730ND
2019-10-084790-002-1110ND
2019-10-084790-009-0900ND
2019-10-084790-010-0840ND
2019-10-084790-011-0820ND
2019-10-084790-020-0742ND
2019-10-084790-021-1245ND