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EWG's Tap Water Database — 2019 UPDATE

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Mercury (inorganic)

California Water Service (CWS) - Salinas

Mercury is a potent neurotoxin that also damages the kidneys and other internal organs. Mercury enters drinking water from industrial pollution, mining wastes and coal-fired power plants.

 

64

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.001000 ppb101ND - 0.01000 ppb
2013ND130ND
2014ND80ND
2015ND70ND
2016ND130ND
2017ND130ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1.2 ppb

The EWG Health Guideline of 1.2 ppb for mercury (inorganic) 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) 2 ppb

The legal limit for inorganic mercury, established in 1991, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2012-02-149590-106-1330ND
2012-02-149590-009-1250ND
2012-03-079590-037-1402ND
2012-03-089590-041-1146ND
2012-04-189590-010-1148ND
2012-04-199590-008-1040ND
2012-06-149590-006-1016ND
2012-07-249590-104-1438ND
2012-09-209590-005-1139ND
2012-12-205701-008-15540.01000 ppb
2013-01-179590-017-1350ND
2013-01-239590-024-1258ND
2013-01-249590-043-1448ND
2013-01-249590-015-1045ND
2013-01-249590-022-1348ND
2013-01-299590-018-1004ND
2013-03-129590-014-1335ND
2013-03-129590-023-1439ND
2013-05-099590-102-1314ND
2013-05-099590-103-1457ND
2013-06-139590-020-1135ND
2013-11-149590-123-1350ND
2013-12-269590-131-1159ND
2014-01-159590-019-1331ND
2014-04-229590-039-1112ND
2014-06-179590-026-1239ND
2014-08-139590-028-1355ND
2014-08-259590-030-1105ND
2014-08-269590-029-1025ND
2014-09-259590-027-0937ND
2014-09-259590-046-1343ND
2015-02-189590-106-1315ND
2015-02-189590-009-1400ND
2015-03-119590-041-1030ND
2015-03-119590-037-1110ND
2015-04-219590-008-1453ND
2015-06-039590-006-1010ND
2015-07-229590-005-1536ND
2016-01-269590-020-1326ND
2016-01-279590-018-1020ND
2016-02-039590-022-1410ND
2016-02-109590-103-1330ND
2016-02-169590-103-1433ND
2016-02-229590-024-1515ND
2016-03-039590-015-1433ND
2016-05-049590-017-1429ND
2016-05-129590-102-1427ND
2016-06-289590-023-1358ND
2016-12-289590-027-1513ND
2016-12-289590-123-1442ND
2016-12-299590-008-1415ND
2017-01-109590-019-1355ND
2017-02-279590-027-1516ND
2017-03-029590-132-1050ND
2017-08-159590-026-1426ND
2017-08-239590-029-1413ND
2017-09-199590-046-1423ND
2017-10-179590-030-1331ND
2017-11-209590-014-1416ND
2017-11-209590-008-1341ND
2017-11-219590-104-1352ND
2017-11-219590-131-1252ND
2017-11-289590-043-1424ND
2017-11-299590-030-1455ND