Know Your Environment. Protect Your Health.

Xylenes (total)

Mccoy 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
20180.533 ppb31ND - 1.60 ppb
20191.17 ppb32ND - 2.90 ppb
20201.17 ppb770.600 ppb - 3.50 ppb
20210.167 ppb31ND - 0.500 ppb
20220.200 ppb31ND - 0.600 ppb
20230.117 ppb61ND - 0.700 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
2018-02-05AE12259ND
2018-02-05AE12261ND
2018-02-05AE122571.60 ppb
2019-06-05AE692560.600 ppb
2019-06-05AE69258ND
2019-11-18AE895812.90 ppb
2020-03-26AF047163.50 ppb
2020-03-26AF047261.000 ppb
2020-03-26AF047280.700 ppb
2020-06-10AF148680.900 ppb
2020-06-10AF148700.600 ppb
2020-07-07AF184070.600 ppb
2020-07-07AF184030.900 ppb
2021-06-28AF596810.500 ppb
2021-09-20AF70457ND
2021-09-20AF70459ND
2022-07-05AG03259ND
2022-07-05AG03261ND
2022-07-05AG032630.600 ppb
2023-05-03AG391390.700 ppb
2023-05-03AG39145ND
2023-05-03AG39151ND
2023-05-03AG39153ND
2023-09-15AG56654ND
2023-10-02AG58143ND