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EWG's Tap Water Database — 2021 UPDATE

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Styrene

Cal-water Service Company - Marysville

Styrene is a volatile cancer-causing chemical used for manufacturing Styrofoam (polystyrene) and other plastics. Releases from industrial production sites and hazardous waste landfills cause styrene contamination in drinking water. Read More.

In addition to increasing the risk of cancer, styrene can also damage the liver and the nervous system. California set a public health goal for styrene in drinking water at 0.5 parts per billion. The federal Maximum Contaminant Level (MCL) allows up to 100 parts per billion of styrene in water, which is 200 times more than the California recommended level.

Click here to read more about carcinogenic VOCs.

MORE ABOUT THIS CONTAMINANT

 

231

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND570ND
2015ND420ND
2016ND320ND
2017ND320ND
2018ND360ND
2019ND320ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for styrene 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) 100 ppb

The legal limit for styrene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1970s. This limit may not fully protect against the risk of cancer due to styrene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-065701-011-0952ND
2014-01-065701-011-0956ND
2014-01-065701-023-1004ND
2014-01-135701-011-1327ND
2014-01-225701-013-1140ND
2014-02-115701-011-0914ND
2014-02-185701-010-1045ND
2014-02-265701-015-1006ND
2014-03-035701-011-1530ND
2014-04-075701-011-1521ND
2014-04-155701-013-1501ND
2014-05-015810-011-1115ND
2014-05-015810-023-1123ND
2014-05-065701-011-0938ND
2014-05-125701-011-0950ND
2014-05-195701-011-0852ND
2014-05-195701-015-1117ND
2014-05-275701-011-1156ND
2014-06-025701-011-0847ND
2014-06-105701-011-0905ND
2014-06-165701-011-0904ND
2014-06-235701-011-1421ND
2014-06-235810-011-1436ND
2014-06-235810-023-1427ND
2014-07-015701-011-1312ND
2014-07-075701-011-1344ND
2014-07-145701-011-0832ND
2014-07-215701-011-0913ND
2014-07-225701-013-1033ND
2014-07-225701-016-1145ND
2014-07-285701-011-0912ND
2014-08-045701-011-1003ND
2014-08-115810-011-0941ND
2014-08-115810-023-0946ND
2014-08-185701-011-0913ND
2014-08-265701-011-0935ND
2014-09-025701-011-0900ND
2014-09-085701-011-0959ND
2014-09-155701-011-0951ND
2014-09-225701-011-0943ND
2014-09-295701-011-0904ND
2014-10-065701-011-0907ND
2014-10-135701-011-0901ND
2014-10-209590-011-0916ND
2014-10-209590-013-1403ND
2014-10-275701-011-0930ND
2014-11-035701-011-1458ND
2014-11-125701-011-0848ND
2014-11-165701-015-1042ND
2014-11-175701-011-1029ND
2014-11-245701-011-1009ND
2014-12-015701-011-0934ND
2014-12-085701-011-1032ND
2014-12-155701-011-1011ND
2014-12-229590-011-0954ND
2014-12-309590-011-1043ND
2014-12-309590-023-1046ND
2015-01-055701-011-0947ND
2015-01-055701-023-0950ND
2015-01-135701-011-1003ND
2015-01-135701-023-1007ND
2015-01-205701-011-1311ND
2015-01-205701-023-1315ND
2015-01-225701-009-1339ND
2015-01-225701-013-1356ND
2015-01-265701-011-1402ND
2015-01-265701-023-1408ND
2015-02-025701-011-0945ND
2015-02-025701-023-0948ND
2015-02-185701-015-1032ND
2015-03-025701-011-1316ND
2015-03-025701-023-1319ND
2015-04-065701-011-1025ND
2015-04-065701-023-1014ND
2015-04-205701-013-1509ND
2015-05-049590-011-0841ND
2015-05-049590-023-0846ND
2015-05-185701-015-1615ND
2015-06-015701-011-0843ND
2015-06-015701-023-0847ND
2015-07-015701-011-0905ND
2015-07-015701-023-0857ND
2015-07-225701-012-1020ND
2015-07-225701-013-0947ND
2015-07-225701-016-1631ND
2015-08-045701-011-1110ND
2015-08-045701-023-1113ND
2015-08-195701-015-1102ND
2015-09-085701-011-0822ND
2015-09-085701-023-0815ND
2015-10-055701-011-0823ND
2015-10-055701-023-0813ND
2015-10-195701-008-1318ND
2015-10-195701-013-1308ND
2015-11-025701-011-1110ND
2015-11-025701-023-1113ND
2015-11-165701-015-1017ND
2015-12-015701-011-1317ND
2015-12-015701-023-1321ND
2016-01-045701-011-0840ND
2016-01-045701-023-0844ND
2016-01-215701-013-1306ND
2016-02-015701-011-0904ND
2016-02-015701-023-0910ND
2016-03-025701-011-1016ND
2016-03-025701-023-1018ND
2016-04-045701-011-0833ND
2016-04-045701-023-0843ND
2016-04-185701-013-1258ND
2016-05-025701-011-0858ND
2016-05-025701-023-0901ND
2016-06-065701-011-0829ND
2016-06-065701-023-0814ND
2016-06-225701-015-1333ND
2016-07-055701-011-1326ND
2016-07-055701-023-1329ND
2016-07-195701-013-1606ND
2016-07-205701-015-1043ND
2016-07-205701-016-1007ND
2016-08-015701-011-0931ND
2016-08-015701-023-0936ND
2016-09-125701-011-0904ND
2016-09-125701-023-0907ND
2016-10-035701-011-1109ND
2016-10-035701-023-1100ND
2016-10-195701-013-1209ND
2016-11-075701-011-0940ND
2016-11-075701-023-0943ND
2016-11-155701-015-1310ND
2016-12-055701-011-0826ND
2016-12-055701-023-0829ND
2017-01-055701-011-1017ND
2017-01-055701-023-1023ND
2017-01-195701-010-0931ND
2017-01-255701-013-1003ND
2017-02-065701-011-1002ND
2017-02-065701-023-1006ND
2017-03-065701-011-1112ND
2017-03-065701-023-1115ND
2017-04-035701-011-1022ND
2017-04-035701-023-1026ND
2017-04-135701-013-1120ND
2017-05-015701-011-1020ND
2017-05-015701-023-1022ND
2017-05-255701-015-1409ND
2017-06-055701-011-0937ND
2017-06-055701-023-0940ND
2017-07-065701-011-1030ND
2017-07-065701-023-1034ND
2017-07-189590-013-1410ND
2017-07-189590-016-1350ND
2017-08-075701-011-1051ND
2017-08-075701-023-1043ND
2017-08-145701-015-1420ND
2017-09-115701-011-0928ND
2017-09-115701-023-0930ND
2017-10-025701-011-1018ND
2017-10-025701-023-1021ND
2017-10-175701-013-1130ND
2017-11-065701-011-0907ND
2017-11-065701-023-0911ND
2017-12-045701-011-1108ND
2017-12-045701-023-1112ND
2018-01-025701-011-0934ND
2018-01-025701-023-0934ND
2018-01-215810-013-0830ND
2018-02-065701-011-1325ND
2018-02-065701-023-1328ND
2018-02-145701-009-1448ND
2018-03-055701-011-1053ND
2018-03-055701-023-1103ND
2018-03-145701-015-1442ND
2018-04-095810-011-1019ND
2018-04-095810-023-1026ND
2018-04-169590-013-1006ND
2018-05-075701-011-1116ND
2018-05-075701-023-1119ND
2018-05-145701-015-1451ND
2018-06-055810-011-1347ND
2018-06-055810-023-1356ND
2018-07-025810-011-0927ND
2018-07-025810-023-0934ND
2018-08-065701-011-1107ND
2018-08-065701-013-1321ND
2018-08-065701-015-0948ND
2018-08-065701-016-1554ND
2018-08-065701-023-1114ND
2018-08-085701-012-1344ND
2018-09-105701-011-1010ND
2018-09-105701-023-1014ND
2018-10-015701-011-1350ND
2018-10-015701-023-1357ND
2018-11-055701-011-0840ND
2018-11-055701-023-0844ND
2018-11-195701-008-1515ND
2018-11-195701-013-1528ND
2018-11-265810-015-1134ND
2018-12-035810-011-1010ND
2018-12-035810-023-1015ND
2019-01-085810-011-1358ND
2019-01-085810-023-1410ND
2019-01-219590-013-1050ND
2019-02-045701-011-1358ND
2019-02-045701-023-1408ND
2019-03-045810-011-1323ND
2019-03-045810-023-1315ND
2019-04-025701-011-1325ND
2019-04-025701-023-1335ND
2019-04-115810-013-1602ND
2019-05-065810-011-0944ND
2019-05-065810-023-0948ND
2019-05-165701-015-0900ND
2019-06-035701-011-1435ND
2019-06-035701-023-1439ND
2019-07-015701-011-1106ND
2019-07-015701-023-1110ND
2019-07-165701-013-1343ND
2019-07-235701-016-1435ND
2019-08-055701-011-0922ND
2019-08-055701-023-0925ND
2019-08-195701-015-1353ND
2019-09-045701-011-1357ND
2019-09-045701-023-1400ND
2019-10-025701-011-1609ND
2019-10-025701-023-1602ND
2019-10-165701-013-1024ND
2019-11-035701-011-1055ND
2019-11-035701-023-1101ND
2019-11-185701-015-0924ND
2019-12-025701-011-1100ND
2019-12-025701-023-1108ND