Know Your Environment. Protect Your Health.

Monochloroacetic acid

Gateway Public Water Authority

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
20182.44 ppb87ND - 3.30 ppb
20191.61 ppb84ND - 4.10 ppb
20201.56 ppb84ND - 3.40 ppb
20211.64 ppb85ND - 3.70 ppb
20220.963 ppb82ND - 3.90 ppb
20230.566 ppb82ND - 2.53 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
2018-01-2218025008101ND
2018-03-13180740042012.10 ppb
2018-04-24181160041012.40 ppb
2018-04-24181160045012.30 ppb
2018-07-23182070047013.20 ppb
2018-07-23182070042013.30 ppb
2018-10-23182980072013.00 ppb
2018-10-23182980068013.20 ppb
2019-01-2219024007101ND
2019-01-2219024006901ND
2019-04-1619108009101ND
2019-04-1619108009301ND
2019-07-16191980038012.90 ppb
2019-07-16191980044014.10 ppb
2019-10-15192900087013.00 ppb
2019-10-15192900085012.90 ppb
2020-01-2220023010001ND
2020-01-2220023010101ND
2020-04-14201070090012.70 ppb
2020-04-14201070089013.20 ppb
2020-09-01202470049013.20 ppb
2020-09-01202470048013.40 ppb
2020-10-1320289001101ND
2020-10-1320289001201ND
2021-01-12210140119012.80 ppb
2021-01-12210140118012.50 ppb
2021-04-13211050168012.10 ppb
2021-04-1321105016901ND
2021-07-13211960111013.70 ppb
2021-08-10212230014012.00 ppb
2021-10-1221287009701ND
2021-10-1221287009601ND
2022-01-12220140025013.80 ppb
2022-01-12220140024013.90 ppb
2022-04-12O196905-HAA-1ND
2022-04-12O196906-HAA-1ND
2022-07-12O199599-HAA-1ND
2022-07-12O199600-HAA-1ND
2022-10-11O202616-HAA-1ND
2022-10-11O202615-HAA-1ND
2023-01-09O205034-HAA-1ND
2023-01-09O205035-HAA-1ND
2023-04-11O207786-HAA-1ND
2023-04-11O207785-HAA-1ND
2023-07-11O210535-HAA-12.00 ppb
2023-07-11O210536-HAA-12.53 ppb
2023-10-10O212912-HAA-1ND
2023-10-10O212913-HAA-1ND