Know Your Environment. Protect Your Health.

Xylenes (total)

Rio Brazos 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.

 

14

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
2021ND20ND
20220.305 ppb21ND - 0.610 ppb
20231.63 ppb43ND - 3.52 ppb

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
2018-09-24Q1838018007ND
2018-09-24Q1838018008ND
2019-09-23Q1967408003ND
2019-09-23Q1967408008ND
2020-08-03Q2030183001ND
2020-08-03Q2030183003ND
2021-03-31Q2108168006ND
2021-03-31Q2108168008ND
2022-11-30Q2235879002ND
2022-11-30Q22358790040.610 ppb
2023-06-08Q2321728001ND
2023-06-08Q23217280112.41 ppb
2023-08-17Q23347020013.52 ppb
2023-12-15Q23540440010.590 ppb