Know Your Environment. Protect Your Health.

Xylenes (total)

Mountain Springs Water Supply Corporation

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.780 ppb41ND - 3.12 ppb
20190.170 ppb41ND - 0.680 ppb
2020ND50ND
20210.260 ppb41ND - 1.04 ppb
2022ND40ND
2023ND40ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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 Lab ID Result
2018-03-13Q1810191003ND
2018-03-13Q1810191005ND
2018-03-13Q1810191001ND
2018-06-28Q18260590023.12 ppb
2019-01-28Q19040510060.680 ppb
2019-01-28Q1904051008ND
2019-01-28Q1904051010ND
2019-01-28Q1904051012ND
2020-05-13Q2019339010ND
2020-09-29Q2038336001ND
2020-11-05Q2043235022ND
2020-11-05Q2043235008ND
2020-11-05Q2043235004ND
2021-11-16Q21320040011.04 ppb
2021-11-16Q2132004003ND
2021-11-16Q2132004005ND
2021-11-16Q2132004007ND
2022-10-18Q2231735009ND
2022-10-18Q2231735011ND
2022-10-18Q2231735013ND
2022-10-18Q2231735015ND
2023-11-30Q2351033007ND
2023-11-30Q2351033009ND
2023-11-30Q2351033011ND
2023-12-13Q2353413003ND