Monochloroacetic acid

Village of Parks Water System

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

184

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	24	0	ND
2015	4.23 ppb	32	20	ND - 16.0 ppb
2016	5.34 ppb	32	14	ND - 25.2 ppb
2017	ND	32	0	ND
2018	ND	32	0	ND
2019	ND	32	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
2014-05-20	L0043358-01	ND
2014-05-20	L0043359-01	ND
2014-05-20	L0043360-01	ND
2014-05-20	L0043362-01	ND
2014-05-20	L0043358-01	ND
2014-05-20	L0043359-01	ND
2014-05-20	L0043360-01	ND
2014-05-20	L0043362-01	ND
2014-08-15	L0046875-01	ND
2014-08-15	L0046876-01	ND
2014-08-15	L0046877-01	ND
2014-08-15	L0046875-01	ND
2014-08-15	L0046876-01	ND
2014-08-15	L0046877-01	ND
2014-08-28	L0047399-01	ND
2014-08-28	L0047399-01	ND
2014-11-14	L0050707-01	ND
2014-11-14	L0050708-01	ND
2014-11-14	L0050709-01	ND
2014-11-14	L0050710-01	ND
2014-11-14	L0050707-01	ND
2014-11-14	L0050708-01	ND
2014-11-14	L0050709-01	ND
2014-11-14	L0050710-01	ND
2015-02-05	LA3279-1	6.60 ppb
2015-02-05	LA3280-1	7.10 ppb
2015-02-05	LA3281-1	10.6 ppb
2015-02-05	LA3282-1	6.90 ppb
2015-02-05	LA3279-1	6.60 ppb
2015-02-05	LA3280-1	7.10 ppb
2015-02-05	LA3281-1	10.6 ppb
2015-02-05	LA3282-1	6.90 ppb
2015-05-11	LA6865-1	ND
2015-05-11	LA6867-1	ND
2015-05-11	LA6868-1	ND
2015-05-11	LA6870-1	ND
2015-05-11	LA6865-1	ND
2015-05-11	LA6867-1	ND
2015-05-11	LA6868-1	ND
2015-05-11	LA6870-1	ND
2015-08-28	LA10869-1	2.40 ppb
2015-08-28	LA10871-1	16.0 ppb
2015-08-28	LA10872-1	ND
2015-08-28	LA10873-1	ND
2015-08-28	LA10869-1	2.40 ppb
2015-08-28	LA10871-1	16.0 ppb
2015-08-28	LA10872-1	ND
2015-08-28	LA10873-1	ND
2015-11-23	LA14339-1	5.10 ppb
2015-11-23	LA14340-1	1.10 ppb
2015-11-23	LA14341-1	6.40 ppb
2015-11-23	LA14342-1	5.40 ppb
2015-11-23	LA14339-1	5.10 ppb
2015-11-23	LA14340-1	1.10 ppb
2015-11-23	LA14341-1	6.40 ppb
2015-11-23	LA14342-1	5.40 ppb
2016-02-22	LA17507-1	ND
2016-02-22	LA17508-1	ND
2016-02-22	LA17509-1	ND
2016-02-22	LA17510-1	ND
2016-02-22	LA17507-1	ND
2016-02-22	LA17508-1	ND
2016-02-22	LA17509-1	ND
2016-02-22	LA17510-1	ND
2016-05-12	LA20555-1	ND
2016-05-12	LA20556-1	ND
2016-05-12	LA20557-1	ND
2016-05-12	LA20558-1	ND
2016-05-12	LA20555-1	ND
2016-05-12	LA20556-1	ND
2016-05-12	LA20557-1	ND
2016-05-12	LA20558-1	ND
2016-08-09	LA23969-1	22.8 ppb
2016-08-09	LA23970-1	25.2 ppb
2016-08-09	LA23971-1	19.1 ppb
2016-08-09	LA23972-1	15.1 ppb
2016-08-09	LA23969-1	22.8 ppb
2016-08-09	LA23970-1	25.2 ppb
2016-08-09	LA23971-1	19.1 ppb
2016-08-09	LA23972-1	15.1 ppb
2016-11-22	LA27859-1	1.10 ppb
2016-11-22	LA27860-1	ND
2016-11-22	LA27861-1	0.810 ppb
2016-11-22	LA27862-1	1.30 ppb
2016-11-22	LA27859-1	1.10 ppb
2016-11-22	LA27860-1	ND
2016-11-22	LA27861-1	0.810 ppb
2016-11-22	LA27862-1	1.30 ppb
2017-02-03	35292955010	ND
2017-02-03	35292955011	ND
2017-02-03	35292955012	ND
2017-02-03	35292955013	ND
2017-02-03	35292955010	ND
2017-02-03	35292955011	ND
2017-02-03	35292955012	ND
2017-02-03	35292955013	ND
2017-05-17	35313014001	ND
2017-05-17	35313014002	ND
2017-05-17	35313014003	ND
2017-05-17	35313014004	ND
2017-05-17	35313014001	ND
2017-05-17	35313014002	ND
2017-05-17	35313014003	ND
2017-05-17	35313014004	ND
2017-08-10	35329943032	ND
2017-08-10	35329943033	ND
2017-08-10	35329943034	ND
2017-08-10	35329943035	ND
2017-08-10	35329943032	ND
2017-08-10	35329943033	ND
2017-08-10	35329943034	ND
2017-08-10	35329943035	ND
2017-11-09	35347542001	ND
2017-11-09	35347542002	ND
2017-11-09	35347542003	ND
2017-11-09	35347542004	ND
2017-11-09	35347542001	ND
2017-11-09	35347542002	ND
2017-11-09	35347542003	ND
2017-11-09	35347542004	ND
2018-02-09	35374034001	ND
2018-02-09	35374034002	ND
2018-02-09	35374034003	ND
2018-02-09	35374034004	ND
2018-02-09	35374034001	ND
2018-02-09	35374034002	ND
2018-02-09	35374034003	ND
2018-02-09	35374034004	ND
2018-05-03	35390339001	ND
2018-05-03	35390339002	ND
2018-05-03	35390339003	ND
2018-05-03	35390339004	ND
2018-05-03	35390339001	ND
2018-05-03	35390339002	ND
2018-05-03	35390339003	ND
2018-05-03	35390339004	ND
2018-08-02	35408612001	ND
2018-08-02	35408612002	ND
2018-08-02	35408612003	ND
2018-08-02	35408612004	ND
2018-08-02	35408612001	ND
2018-08-02	35408612002	ND
2018-08-02	35408612003	ND
2018-08-02	35408612004	ND
2018-11-01	35428217001	ND
2018-11-01	35428217002	ND
2018-11-01	35428217003	ND
2018-11-01	35428217004	ND
2018-11-01	35428217001	ND
2018-11-01	35428217002	ND
2018-11-01	35428217003	ND
2018-11-01	35428217004	ND
2019-02-07	35447081001	ND
2019-02-07	35447081002	ND
2019-02-07	35447081003	ND
2019-02-07	35447081004	ND
2019-02-07	35447081001	ND
2019-02-07	35447081002	ND
2019-02-07	35447081003	ND
2019-02-07	35447081004	ND
2019-05-02	35466008001	ND
2019-05-02	35466008002	ND
2019-05-02	35466008003	ND
2019-05-02	35466008004	ND
2019-05-02	35466008001	ND
2019-05-02	35466008002	ND
2019-05-02	35466008003	ND
2019-05-02	35466008004	ND
2019-08-01	35486853001	ND
2019-08-01	35486853002	ND
2019-08-01	35486853003	ND
2019-08-01	35486853004	ND
2019-08-01	35486853001	ND
2019-08-01	35486853002	ND
2019-08-01	35486853003	ND
2019-08-01	35486853004	ND
2019-11-19	35514170001	ND
2019-11-19	35514170002	ND
2019-11-19	35514170003	ND
2019-11-19	35514170004	ND
2019-11-19	35514170001	ND
2019-11-19	35514170002	ND
2019-11-19	35514170003	ND
2019-11-19	35514170004	ND