Know Your Environment. Protect Your Health.

Monochloroacetic acid

Wallingford 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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.17 ppb164ND - 5.90 ppb
20190.350 ppb162ND - 2.80 ppb
20200.569 ppb163ND - 3.10 ppb
20210.275 ppb162ND - 2.40 ppb
20221.16 ppb167ND - 3.50 ppb
20230.850 ppb165ND - 3.60 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
2018-03-05BZ98171ND
2018-03-05BZ981704.80 ppb
2018-03-05BZ981723.50 ppb
2018-03-05BZ98173ND
2018-06-07CA66061ND
2018-06-07CA66062ND
2018-06-07CA66063ND
2018-06-07CA660645.90 ppb
2018-09-13CB306274.50 ppb
2018-09-13CB30628ND
2018-09-13CB30629ND
2018-09-13CB30630ND
2018-12-13CC13585ND
2018-12-13CC13587ND
2018-12-13CC13586ND
2018-12-13CC13584ND
2019-03-14CC67793ND
2019-03-14CC67796ND
2019-03-14CC67794ND
2019-03-14CC67795ND
2019-06-06CD28588ND
2019-06-06CD28589ND
2019-06-06CD28590ND
2019-06-06CD28591ND
2019-09-12CE09316ND
2019-09-12CE09318ND
2019-09-12CE09317ND
2019-09-12CE09315ND
2019-12-05CE810922.80 ppb
2019-12-05CE810932.80 ppb
2019-12-05CE81094ND
2019-12-05CE81091ND
2020-03-04CF440163.00 ppb
2020-03-04CF44017ND
2020-03-04CF440183.10 ppb
2020-03-04CF44019ND
2020-06-03CG06773ND
2020-06-03CG06774ND
2020-06-03CG06772ND
2020-06-03CG06771ND
2020-09-02CG700313.00 ppb
2020-09-02CG70032ND
2020-09-02CG70033ND
2020-09-02CG70034ND
2020-12-02CH23209ND
2020-12-02CH23210ND
2020-12-02CH23211ND
2020-12-02CH23212ND
2021-03-03CH71318ND
2021-03-03CH71315ND
2021-03-03CH71316ND
2021-03-03CH71317ND
2021-06-09CI51949ND
2021-06-09CI51950ND
2021-06-09CI51951ND
2021-06-09CI519482.40 ppb
2021-09-01CJ176752.00 ppb
2021-09-01CJ17676ND
2021-09-01CJ17677ND
2021-09-01CJ17678ND
2021-12-08CJ93585ND
2021-12-08CJ93584ND
2021-12-08CJ93583ND
2021-12-08CJ93582ND
2022-03-02CK77269ND
2022-03-02CK77270ND
2022-03-02CK772712.30 ppb
2022-03-02CK77272ND
2022-06-09CL530422.60 ppb
2022-06-09CL53043ND
2022-06-09CL53044ND
2022-06-09CL53045ND
2022-09-01CM206853.50 ppb
2022-09-01CM20683ND
2022-09-01CM206823.10 ppb
2022-09-01CM20684ND
2022-12-08CN003782.80 ppb
2022-12-08CN003792.10 ppb
2022-12-08CN003802.20 ppb
2022-12-08CN00381ND
2023-03-01CN51583ND
2023-03-01CN51584ND
2023-03-01CN515852.80 ppb
2023-03-01CN515862.60 ppb
2023-06-09CO24193ND
2023-06-09CO24195ND
2023-06-09CO24194ND
2023-06-09CO241922.50 ppb
2023-09-07C092602ND
2023-09-07CO926013.60 ppb
2023-09-07CO92603ND
2023-09-07CO926042.10 ppb
2023-12-14CP68701ND
2023-12-14CP68702ND
2023-12-14CP68703ND
2023-12-14CP68706ND