Know Your Environment. Protect Your Health.

Monochloroacetic acid

Town of Clayton Water System

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.

 

64

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.06 ppb164ND - 4.70 ppb
20191.21 ppb168ND - 4.80 ppb
20200.715 ppb84ND - 2.00 ppb
20210.771 ppb84ND - 1.80 ppb
20224.16 ppb87ND - 14.6 ppb
20231.000 ppb85ND - 2.20 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
2018-03-14353805260014.70 ppb
2018-03-14353805260023.80 ppb
2018-03-14353805260023.80 ppb
2018-03-14353805260014.70 ppb
2018-06-0635397136002ND
2018-06-0635397136001ND
2018-06-0635397136002ND
2018-06-0635397136001ND
2018-09-1935419440001ND
2018-09-1935419440002ND
2018-09-1935419440001ND
2018-09-1935419440002ND
2018-12-1235437263001ND
2018-12-1235437263001ND
2018-12-1235437263002ND
2018-12-1235437263002ND
2019-03-18354563080011.80 ppb
2019-03-1835456308002ND
2019-03-18354563080011.80 ppb
2019-03-1835456308002ND
2019-06-19354771100014.80 ppb
2019-06-1935477110002ND
2019-06-19354771100014.80 ppb
2019-06-1935477110002ND
2019-09-1635498597002ND
2019-09-1635498597001ND
2019-09-1635498597001ND
2019-09-1635498597002ND
2019-12-10355182440011.90 ppb
2019-12-10355182440021.20 ppb
2019-12-10355182440021.20 ppb
2019-12-10355182440011.90 ppb
2020-03-1835538847002ND
2020-03-1835538847001ND
2020-06-2935559954001ND
2020-06-29355599540020.920 ppb
2020-09-29355813480012.00 ppb
2020-09-29355813480021.40 ppb
2020-12-17356000010011.40 ppb
2020-12-1735600001002ND
2021-03-24356218330011.80 ppb
2021-03-2435621833002ND
2021-06-16356418320011.80 ppb
2021-06-16356418320020.970 ppb
2021-09-2235666070001ND
2021-09-2235666070002ND
2021-12-15356846980011.60 ppb
2021-12-1535684698002ND
2022-03-2135706127002ND
2022-03-21357061270011.20 ppb
2022-06-15B2202797-00210.00 ppb
2022-06-15B2202797-00114.6 ppb
2022-09-22357488220012.20 ppb
2022-09-22357488220021.50 ppb
2022-12-13357671970012.20 ppb
2022-12-13357671970021.60 ppb
2023-03-22357880980011.40 ppb
2023-03-22357880980021.000 ppb
2023-06-1335806747001ND
2023-06-1335806747002ND
2023-09-20358295350011.80 ppb
2023-09-20358295350021.60 ppb
2023-12-2035850047001ND
2023-12-20358500470022.20 ppb