Know Your Environment. Protect Your Health.

Monochloroacetic acid

Watertown Town Water District 1 & 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.

 

46

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.59 ppb72ND - 7.10 ppb
20194.01 ppb86ND - 7.40 ppb
20203.27 ppb98ND - 5.40 ppb
20213.96 ppb86ND - 8.70 ppb
20222.38 ppb63ND - 6.50 ppb
20231.07 ppb81ND - 8.56 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
2018-02-13180215026-001ND
2018-02-13180215026-003ND
2018-02-13180215026-002ND
2018-08-07180808025-0014.00 ppb
2018-08-07180808025-0027.10 ppb
2018-11-14181115020-002ND
2018-11-14181115020-001ND
2019-02-05190206020-002ND
2019-02-05190206020-001ND
2019-05-09190510040-0042.80 ppb
2019-05-09190510040-0033.10 ppb
2019-08-06190807029-0027.10 ppb
2019-08-06190807029-0014.60 ppb
2019-11-04191106055-0027.10 ppb
2019-11-04191106055-0017.40 ppb
2020-02-05200206030-0014.00 ppb
2020-02-05200206030-0023.40 ppb
2020-05-04200508027-0013.30 ppb
2020-05-04200508027-0022.60 ppb
2020-05-04200508027-0013.30 ppb
2020-08-03200805134-0025.40 ppb
2020-08-03200805134-001ND
2020-11-09201111065-0024.00 ppb
2020-11-09201111065-0013.40 ppb
2021-02-12210216038-002ND
2021-02-12210216038-0012.10 ppb
2021-05-03210505022-0013.40 ppb
2021-05-03210505022-0024.00 ppb
2021-08-12210813077-0028.70 ppb
2021-08-12210813077-001ND
2021-11-08211112089-0016.90 ppb
2021-11-08211112089-0026.60 ppb
2022-02-08220211040-001 23.40 ppb
2022-02-08220211040-002ND
2022-05-19220525028-0024.40 ppb
2022-05-19220525028-0016.50 ppb
2022-08-31220901024-002ND
2022-08-31220901024-001ND
2023-02-1523021372-001ND
2023-02-1523021372-0028.56 ppb
2023-05-0923051081-001ND
2023-05-0923051081-002ND
2023-08-02L2344843-005ND
2023-08-02L2344843-003ND
2023-11-15L2368417-01ND
2023-11-15L2368417-02ND