Know Your Environment. Protect Your Health.

Monochloroacetic acid

Westwood Shores Municipal Utility District

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
20184.88 ppb882.60 ppb - 9.70 ppb
20190.350 ppb82ND - 1.60 ppb
20200.250 ppb82ND - 1.000 ppb
20210.700 ppb83ND - 2.80 ppb
20222.30 ppb85ND - 7.60 ppb
20234.58 ppb881.10 ppb - 12.0 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
2018-02-14Q18065430025.60 ppb
2018-02-14Q18065430019.70 ppb
2018-05-15Q18200400023.80 ppb
2018-05-15Q18200400013.80 ppb
2018-08-21Q18333910014.80 ppb
2018-08-21Q18333910024.20 ppb
2018-11-16Q18470810014.50 ppb
2018-11-16Q18470810032.60 ppb
2019-03-14Q19108480011.20 ppb
2019-03-14Q19108480021.60 ppb
2019-06-27Q1940975001ND
2019-06-27Q1940975002ND
2019-09-25Q1969534002ND
2019-09-25Q1969534001ND
2019-12-18Q1980839002ND
2019-12-18Q1980839004ND
2020-03-12Q2010471001ND
2020-03-12Q2010471002ND
2020-06-18Q2024786001ND
2020-06-18Q2024786002ND
2020-09-23Q20377260011.000 ppb
2020-09-23Q20377260021.000 ppb
2020-12-10Q2049276003ND
2020-12-10Q2049276004ND
2021-03-22Q21072520012.80 ppb
2021-03-22Q21072520031.80 ppb
2021-06-23Q2116433001ND
2021-06-23Q2116433002ND
2021-09-27Q2126269001ND
2021-09-27Q2126269002ND
2021-12-17Q2135904001ND
2021-12-29Q21364300011.000 ppb
2022-03-02Q2207192003ND
2022-03-02Q2207192004ND
2022-05-04Q22134240012.30 ppb
2022-05-04Q22134240023.50 ppb
2022-08-03Q2222232001ND
2022-08-03Q22222320027.60 ppb
2022-10-25Q22320870012.80 ppb
2022-10-25Q22320870022.20 ppb
2023-01-12Q23019770011.10 ppb
2023-01-12Q23019770021.70 ppb
2023-05-15Q23182730022.90 ppb
2023-05-15Q23182730033.20 ppb
2023-09-07Q233861100112.0 ppb
2023-09-07Q233861100211.6 ppb
2023-12-12Q23529500012.40 ppb
2023-12-12Q23529500021.70 ppb