Know Your Environment. Protect Your Health.

Xylenes (total)

San Diego Municipal Utility District 1

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.250 ppb21ND - 0.500 ppb
2019ND20ND
2020ND20ND
20210.350 ppb42ND - 0.800 ppb
2022ND20ND
20232.48 ppb42ND - 6.10 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
2018-02-12AE13322ND
2018-06-04AE285550.500 ppb
2019-02-11AE53819ND
2019-05-06AE64908ND
2020-06-04AF14192ND
2020-06-04AF14196ND
2021-06-07AF575190.800 ppb
2021-07-22AF630700.600 ppb
2021-11-29AF77508ND
2021-11-29AF77520ND
2022-01-20AF80982ND
2022-01-20AF81002ND
2023-02-22AG29940ND
2023-04-24AG377043.80 ppb
2023-07-24AG498326.10 ppb
2023-11-15AG63792ND