Know Your Environment. Protect Your Health.

Monochloroacetic acid

Rra Arrowhead Lake Lots

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
20182.76 ppb85ND - 6.80 ppb
20191.80 ppb85ND - 3.60 ppb
20200.775 ppb83ND - 2.20 ppb
20210.625 ppb82ND - 3.10 ppb
20220.125 ppb81ND - 1.000 ppb
20231.75 ppb85ND - 3.70 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
2018-02-28Q1808446002ND
2018-02-28Q1808446001ND
2018-05-07Q18183160064.70 ppb
2018-05-07Q18183160034.30 ppb
2018-08-22Q18338320033.00 ppb
2018-08-22Q1833832004ND
2018-11-13Q18457300013.30 ppb
2018-11-13Q18457300026.80 ppb
2019-01-28Q19039180093.10 ppb
2019-01-28Q19039180103.60 ppb
2019-05-16Q19265640012.00 ppb
2019-05-16Q1926564002ND
2019-08-20Q19573830042.60 ppb
2019-08-20Q19573830033.10 ppb
2019-11-21Q1977790001ND
2019-11-21Q1977790002ND
2020-02-27Q2007464001ND
2020-02-27Q2007464002ND
2020-06-09Q20232210012.20 ppb
2020-06-09Q2023221002ND
2020-09-22Q20375650032.00 ppb
2020-09-22Q20375650042.00 ppb
2020-11-17Q2045515001ND
2020-11-17Q2045515002ND
2021-03-09Q21060520043.10 ppb
2021-03-09Q2106052005ND
2021-06-08Q21148610011.90 ppb
2021-06-08Q2114861002ND
2021-09-08Q2124630001ND
2021-09-08Q2124630002ND
2021-12-06Q2133793001ND
2021-12-06Q2133793002ND
2022-03-23Q2209530001ND
2022-03-23Q2209530002ND
2022-05-25Q22151530021.000 ppb
2022-05-25Q2215153003ND
2022-08-17Q2224342001ND
2022-08-17Q2224342002ND
2022-11-09Q2233923002ND
2022-11-09Q2233923003ND
2023-02-13Q23055010022.10 ppb
2023-02-13Q2305501003ND
2023-05-10Q23179660023.20 ppb
2023-05-10Q2317966003ND
2023-08-21Q23351280013.70 ppb
2023-08-21Q23351280033.60 ppb
2023-11-01Q23468610021.40 ppb
2023-11-01Q2346861003ND