Know Your Environment. Protect Your Health.

Monochloroacetic acid

Trinity Rural Water Supply Corporation 2

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
20183.58 ppb881.20 ppb - 6.60 ppb
20190.900 ppb84ND - 2.30 ppb
20201.48 ppb84ND - 4.30 ppb
20211.63 ppb881.000 ppb - 2.10 ppb
20221.86 ppb86ND - 6.50 ppb
20234.73 ppb881.10 ppb - 12.5 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
2018-02-14Q18065440023.20 ppb
2018-02-14Q18065440011.20 ppb
2018-05-15Q18200410024.20 ppb
2018-05-15Q18200410013.80 ppb
2018-08-21Q18333920015.80 ppb
2018-08-21Q18333920026.60 ppb
2018-11-16Q18470820012.20 ppb
2018-11-16Q18470820021.60 ppb
2019-03-14Q19108490021.80 ppb
2019-03-14Q19108490032.30 ppb
2019-06-27Q1940976002ND
2019-06-27Q1940976003ND
2019-09-17Q1966695002ND
2019-09-17Q19666950011.80 ppb
2019-12-09Q19792610021.30 ppb
2019-12-09Q1979261003ND
2020-03-25Q2012676002ND
2020-03-25Q2012676003ND
2020-06-18Q20247870022.40 ppb
2020-06-18Q20247870032.10 ppb
2020-09-09Q20361290013.00 ppb
2020-09-09Q20361290024.30 ppb
2020-12-01Q2048015001ND
2020-12-01Q2048015002ND
2021-02-11Q21041960021.80 ppb
2021-02-11Q21041960031.70 ppb
2021-04-14Q21096720022.10 ppb
2021-04-14Q21096720031.80 ppb
2021-07-19Q21188460021.000 ppb
2021-07-19Q21188460031.000 ppb
2021-12-17Q21359120021.50 ppb
2021-12-17Q21359120032.10 ppb
2022-03-02Q22071960021.000 ppb
2022-03-02Q2207196003ND
2022-05-04Q22134270022.60 ppb
2022-05-04Q22134270032.00 ppb
2022-08-03Q22222360026.50 ppb
2022-08-03Q2222236003ND
2022-11-07Q22335120011.30 ppb
2022-11-07Q22335120021.50 ppb
2023-02-08Q23049630022.50 ppb
2023-02-08Q23049630032.10 ppb
2023-06-12Q23221110023.70 ppb
2023-06-12Q23221110032.70 ppb
2023-09-07Q233861400211.8 ppb
2023-09-07Q233861400312.5 ppb
2023-12-12Q23529550021.10 ppb
2023-12-12Q23529550031.40 ppb