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EWG's Tap Water Database — 2019 UPDATE

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Xylenes (total)

Holden Water Division, DPW

Xylenes are solvents used in industrial and consumer products, such as cleaning agents and paint thinners. Xylenes cause nervous system damage and may harm developing fetuses.

 

49

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
2013ND80ND
2014ND80ND
2015ND80ND
2016ND90ND
2017ND80ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1,800 ppb

The EWG Health Guideline of 1,800 ppb for xylenes 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 the brain and nervous system.

EPA Maximum Contaminant
Level (MCL) 10,000 ppb

The legal limit for xylenes, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s. This limit may not fully protect against harm to the brain and nervous system due to xylene exposure.

ppb = parts per billion

All test results

Date Result
2012-01-05ND
2012-05-08ND
2012-05-08ND
2012-05-08ND
2012-05-08ND
2012-06-11ND
2012-08-22ND
2012-11-20ND
2013-02-20ND
2013-05-16ND
2013-05-16ND
2013-05-16ND
2013-05-16ND
2013-05-16ND
2013-08-21ND
2013-11-18ND
2014-02-18ND
2014-05-20ND
2014-05-20ND
2014-05-20ND
2014-05-20ND
2014-05-20ND
2014-08-20ND
2014-11-19ND
2015-02-18ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-08-18ND
2015-11-17ND
2016-02-02ND
2016-02-16ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-09-06ND
2016-11-15ND
2017-02-21ND
2017-05-16ND
2017-05-16ND
2017-05-16ND
2017-05-16ND
2017-05-16ND
2017-08-15ND
2017-11-21ND