Know Your Environment. Protect Your Health.

Xylenes (total)

Harris County Water Control and Improvement District Fondren Road

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND20ND
20210.125 ppb41ND - 0.500 ppb
2022ND10ND
2023ND20ND

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
2018-02-28AE16059ND
2018-02-28AE16063ND
2019-01-30AE52240ND
2019-01-30AE52242ND
2020-01-21AE94363ND
2020-01-21AE94365ND
2021-06-15AF58084ND
2021-06-29AF599320.500 ppb
2021-09-23AF71053ND
2021-10-11AF72910ND
2022-03-16AF89377ND
2023-01-25AG26262ND
2023-01-25AG26266ND