Know Your Environment. Protect Your Health.

Monochloroacetic acid

Essex Fells Water Department

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
20180.823 ppb83ND - 3.29 ppb
2019ND80ND
2020ND80ND
20210.250 ppb81ND - 2.00 ppb
2022ND80ND
2023ND80ND

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
2018-03-19HA032918-21ND
2018-03-19HA032918-201.88 ppb
2018-06-19HA062218-123.29 ppb
2018-06-19HA062218-111.41 ppb
2018-09-19HA092618-08ND
2018-09-19HA092618-09ND
2018-12-197074689001-HAAND
2018-12-197074689002-HAAND
2019-03-127082147001-HAAND
2019-03-127082147002-HAAND
2019-06-197094676001-HAAND
2019-06-197094676002-HAAND
2019-09-1870105863002-HAAND
2019-09-1870105863001-HAAND
2019-12-1770116019001-HAAND
2019-12-1770116019002-HAAND
2020-03-1770125512001-HAAND
2020-03-1770125512002-HAAND
2020-06-1670135050001-HAAND
2020-06-2570136242001-HAAND
2020-09-1570146223001-HAAND
2020-09-1570146223002-HAAND
2020-12-153147744001ND
2020-12-153147744002ND
2021-03-163164568001ND
2021-03-163164568002ND
2021-06-1531829370012.00 ppb
2021-06-153182937002ND
2021-09-21810-3348-1ND
2021-09-21810-3348-2ND
2021-12-143218083001ND
2021-12-143218083002ND
2022-03-083231768001ND
2022-03-083231768002ND
2022-06-143248595001ND
2022-06-143248595002ND
2022-09-203264883001ND
2022-09-203264883002ND
2022-12-153279821001ND
2022-12-153279821002ND
2023-03-143293180001ND
2023-03-143293180002ND
2023-06-133308470001ND
2023-06-133308470002ND
2023-09-1270270225001-HAAND
2023-09-1270270225002-HAAND
2023-12-1270280758001-HAAND
2023-12-1270280758002-HAAND