Know Your Environment. Protect Your Health.

Xylenes (total)

CTWC - Unionville System

NOTE: CTWC - Unionville System purchases water from Metropolitan District Commission which is required to test for xylenes (total). Sample information shown below was taken by Metropolitan District Commission.

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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND10ND
2020ND30ND
2021ND40ND
2022ND40ND
2023ND10ND

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

NOTE: CTWC - Unionville System purchases water from Metropolitan District Commission which is required to test for xylenes (total). Sample information shown below was taken by Metropolitan District Commission.

Date Lab ID Result
2018-07-16ND
2019-06-05ND
2020-06-02ND
2021-11-23ND
2021-11-29ND
2022-12-15ND
2023-12-06ND