Know Your Environment. Protect Your Health.

Monochloroacetic acid

City of Rule

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.59 ppb86ND - 7.90 ppb
20190.563 ppb82ND - 3.00 ppb
20200.288 ppb81ND - 2.30 ppb
20212.40 ppb83ND - 11.9 ppb
20220.125 ppb81ND - 1.000 ppb
20231.91 ppb881.30 ppb - 2.40 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was defined by the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk.a public health goal. This health guideline protects against change to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-03-01Q1808595002ND
2018-03-01Q1808595001ND
2018-05-29Q18212230076.50 ppb
2018-05-29Q18212230022.50 ppb
2018-09-11Q18357960025.30 ppb
2018-09-11Q18357960037.90 ppb
2018-11-29Q18487410013.30 ppb
2018-11-29Q18487410023.20 ppb
2019-02-28Q19087480071.50 ppb
2019-02-28Q1908748008ND
2019-05-21Q1927304002ND
2019-05-21Q19273040033.00 ppb
2019-08-22Q1958555003ND
2019-08-22Q1958555002ND
2019-12-10Q1979532002ND
2019-12-10Q1979532003ND
2020-03-02Q2007740003ND
2020-03-02Q20077400042.30 ppb
2020-05-28Q2021173001ND
2020-05-28Q2021173003ND
2020-09-01Q2034855002ND
2020-09-01Q2034855003ND
2020-12-02Q2048097001ND
2020-12-02Q2048097002ND
2021-03-09Q2106058004ND
2021-03-09Q21060580055.00 ppb
2021-05-20Q211323400611.9 ppb
2021-05-20Q21132340072.30 ppb
2021-08-25Q2123193002ND
2021-08-25Q2123193003ND
2021-11-15Q2131744002ND
2021-11-15Q2131744003ND
2022-03-03Q2207478003ND
2022-03-03Q2207478004ND
2022-05-25Q2215195006ND
2022-05-25Q2215195007ND
2022-09-08Q2226790002ND
2022-09-08Q2226790003ND
2022-11-29Q22353920021.000 ppb
2022-11-29Q2235392003ND
2023-03-14Q23100480022.30 ppb
2023-03-14Q23100480032.40 ppb
2023-05-17Q23186160041.90 ppb
2023-05-17Q23186160052.20 ppb
2023-08-24Q23361890021.90 ppb
2023-08-24Q23361890031.90 ppb
2023-11-16Q23493710021.30 ppb
2023-11-16Q23493710031.40 ppb