Monochloroacetic acid

Oak Village Mobile Home Park Ws

Monochloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	ND	4	0	ND
2015	ND	4	0	ND
2016	ND	4	0	ND
2017	0.620 ppb	4	4	0.600 ppb - 0.640 ppb
2018	ND	4	0	ND
2019	ND	4	0	ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was proposed in 2020 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 system toxicity.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-09-09	1334004	ND
2014-09-09	1334003	ND
2014-09-09	1334004	ND
2014-09-09	1334003	ND
2015-09-10	1426701	ND
2015-09-10	1426701	ND
2015-09-10	1426702	ND
2015-09-10	1426702	ND
2016-10-17	1534588	ND
2016-10-17	1534589	ND
2016-10-17	1534589	ND
2016-10-17	1534588	ND
2017-09-13	35335843011	0.600 ppb
2017-09-13	35335843011	0.600 ppb
2017-09-13	35335843010	0.640 ppb
2017-09-13	35335843010	0.640 ppb
2018-09-07	35416298002	ND
2018-09-07	35416298001	ND
2018-09-07	35416298001	ND
2018-09-07	35416298002	ND
2019-09-05	35496671001	ND
2019-09-05	35496671002	ND
2019-09-05	35496671001	ND
2019-09-05	35496671002	ND