Know Your Environment. Protect Your Health.

Monochloroacetic acid

Cypress Valley Water Supply Corporation Plant 1

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.

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND60ND
20200.375 ppb82ND - 2.00 ppb
20211.23 ppb84ND - 5.50 ppb
20220.575 ppb83ND - 2.10 ppb
20233.64 ppb883.00 ppb - 4.80 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
2018-09-20AE41159ND
2018-09-20AE41158ND
2019-05-29AE68624ND
2019-05-29AE68623ND
2019-09-11AE83198ND
2019-09-11AE83200ND
2019-11-18AE90030ND
2019-11-18AE90031ND
2020-03-17Q2011576005ND
2020-03-17Q2011576006ND
2020-06-16Q2023957002ND
2020-06-16Q2023957001ND
2020-09-24Q20378450012.00 ppb
2020-09-24Q20378450021.000 ppb
2020-12-15Q2049722001ND
2020-12-15Q2049722002ND
2021-03-08Q21059570035.50 ppb
2021-03-08Q21059570041.90 ppb
2021-05-24Q21135260011.40 ppb
2021-05-24Q2113526002ND
2021-09-10Q2124780001ND
2021-09-10Q21247800021.000 ppb
2021-11-01Q2130503001ND
2021-11-01Q2130503002ND
2022-01-24Q2202505001ND
2022-01-24Q2202505002ND
2022-04-25Q2212336001ND
2022-04-25Q2212336002ND
2022-07-21Q22208990011.10 ppb
2022-07-21Q2220899002ND
2022-10-31Q22329570012.10 ppb
2022-10-31Q22329570071.40 ppb
2023-01-25Q23035060013.00 ppb
2023-01-25Q23035060023.20 ppb
2023-06-12Q23220980013.50 ppb
2023-06-12Q23220980023.10 ppb
2023-08-11Q23337010013.80 ppb
2023-08-11Q23337010023.60 ppb
2023-10-12Q23435550024.10 ppb
2023-10-12Q23435550034.80 ppb