Xylenes (total)

Niles

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.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	2	ND
2015	N/A	0	N/A
2016	N/A	0	N/A
2017	N/A	0	N/A
2018	ND	14	ND
2019	ND	10	ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-08-05	LLF31177	ND
2014-08-05	LLF31179	ND
2018-03-05	LLH68936	ND
2018-03-05	LLH68935	ND
2018-06-25	LLH88919	ND
2018-06-25	LLH88920	ND
2018-06-25	LLH88921	ND
2018-08-06	LLH97147	ND
2018-08-06	LLH97145	ND
2018-08-06	LLH97146	ND
2018-09-13	LLI05494	ND
2018-09-17	LLI06128	ND
2018-09-17	LLI06127	ND
2018-09-17	LLI06126	ND
2018-11-27	LLI16872	ND
2018-11-27	LLI16871	ND
2019-02-11	LLI25176	ND
2019-02-11	LLI25175	ND
2019-02-11	LLI25174	ND
2019-06-19	LLI44899	ND
2019-06-19	LLI44898	ND
2019-09-17	LLI64908	ND
2019-09-17	LLI64907	ND
2019-09-17	LLI64906	ND
2019-12-10	LLI82613	ND
2019-12-10	LLI82612	ND