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EWG's Tap Water Database — 2019 UPDATE

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Thallium

California Water Service Co-leona Valley

Thalium is a naturally occurring metal released into the environment from metal smelting and coal burning. Exposure to too much thalium can cause hair loss, liver damage, reduced sperm motility and nervous system impairment.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013N/A00N/A
2014ND10ND
2015ND80ND
2016ND50ND
2017ND110ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for thallium 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 thallium, established in 1992, was based on analytical detection limits at the time that the standard was set.

ppb = parts per billion

All test results

Date Lab ID Result
2012-02-085810-006-1403ND
2014-05-065810-001-1356ND
2015-02-025810-006-1416ND
2015-05-135701-001-1210ND
2015-05-135701-006-1211ND
2015-05-135701-005-1205ND
2015-06-095701-001-1027ND
2015-08-045701-001-1349ND
2015-08-045701-005-1341ND
2015-08-045701-006-1347ND
2016-02-095701-001-1045ND
2016-02-095701-005-1113ND
2016-02-095701-006-1041ND
2016-11-085701-005-1451ND
2016-11-085701-001-1429ND
2017-02-075701-001-1137ND
2017-02-075701-006-1142ND
2017-02-075701-005-1120ND
2017-05-085810-001-1248ND
2017-05-095701-001-0946ND
2017-05-095701-005-0940ND
2017-05-095701-006-0949ND
2017-08-155701-005-1356ND
2017-08-155701-006-1405ND
2017-08-155701-001-1400ND
2017-12-125701-006-1531ND