Know Your Environment. Protect Your Health.

Xylenes (total)

Starr 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
2018ND40ND
2019ND40ND
202038.0 ppb41ND - 152.0 ppb
2021ND50ND
20220.140 ppb41ND - 0.560 ppb
20230.188 ppb41ND - 0.750 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
2018-10-04Q1839859004ND
2018-10-04Q1839859005ND
2018-10-04Q1839859007ND
2018-10-04Q1839859002ND
2019-08-27Q1960470001ND
2019-08-27Q1960470003ND
2019-08-27Q1960470005ND
2019-12-11Q1979772001ND
2020-09-29Q2038300011ND
2020-09-29Q2038300014ND
2020-09-29Q2038300016ND
2020-12-15Q2049655005152.0 ppb
2021-05-19Q2113143005ND
2021-09-09Q2124597001ND
2021-11-17Q2132246001ND
2021-11-17Q2132246006ND
2021-11-17Q2132246008ND
2022-10-19Q2231830002ND
2022-10-19Q2231830004ND
2022-10-19Q2231830006ND
2022-10-19Q22318300080.560 ppb
2023-06-26Q2324322005ND
2023-06-26Q2324322007ND
2023-06-26Q2324322009ND
2023-06-26Q23243220110.750 ppb