Know Your Environment. Protect Your Health.

Monochloroacetic acid

St. Mary Parish Water & Sewer #2 Bayou Vista

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.

 

70

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.425 ppb164ND - 2.20 ppb
20191.44 ppb2216ND - 2.40 ppb
20200.988 ppb84ND - 2.20 ppb
20211.34 ppb87ND - 2.20 ppb
20221.93 ppb881.10 ppb - 2.80 ppb
20232.55 ppb881.90 ppb - 4.30 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
2018-01-1135368138002ND
2018-01-1135368138001ND
2018-01-1135368138002ND
2018-01-1135368138001ND
2018-04-1035385301001ND
2018-04-1035385301002ND
2018-04-1035385301002ND
2018-04-1035385301001ND
2018-07-02354018750011.20 ppb
2018-07-02354018750022.20 ppb
2018-07-02354018750022.20 ppb
2018-07-02354018750011.20 ppb
2018-10-1135424007001ND
2018-10-1135424007002ND
2018-10-1135424007001ND
2018-10-1135424007002ND
2019-01-10354417970012.20 ppb
2019-01-10354417970012.20 ppb
2019-01-10354417970021.90 ppb
2019-01-10354417970021.90 ppb
2019-01-25354447260012.40 ppb
2019-01-25354447260022.40 ppb
2019-01-25354447260032.10 ppb
2019-01-25354447260032.10 ppb
2019-01-25354447260012.40 ppb
2019-01-25354447260022.40 ppb
2019-04-0335459639002ND
2019-04-0335459639002ND
2019-04-03354596390011.80 ppb
2019-04-03354596390011.80 ppb
2019-07-1135481773002ND
2019-07-1135481773001ND
2019-07-1135481773001ND
2019-07-1135481773002ND
2019-10-03355025620021.70 ppb
2019-10-03355025620011.30 ppb
2019-10-03355025620011.30 ppb
2019-10-03355025620021.70 ppb
2020-01-17355251780011.90 ppb
2020-01-17355251780022.20 ppb
2020-04-0235541334001ND
2020-04-0235541334002ND
2020-07-02355604970012.10 ppb
2020-07-02355604970021.70 ppb
2020-10-0135582017001ND
2020-10-0135582017002ND
2021-01-08356034720012.00 ppb
2021-01-08356034720022.20 ppb
2021-04-09356251010012.00 ppb
2021-04-0935625101002ND
2021-07-02356449170021.10 ppb
2021-07-02356449170010.950 ppb
2021-10-14356729450020.960 ppb
2021-10-14356729450011.50 ppb
2022-01-13356907730011.30 ppb
2022-01-13356907730021.60 ppb
2022-04-07357092080011.40 ppb
2022-04-07357092080021.90 ppb
2022-07-08357324350022.60 ppb
2022-07-08357324350011.10 ppb
2022-10-06357514450022.80 ppb
2022-10-06357514450012.70 ppb
2023-01-12357725240012.40 ppb
2023-01-12357725240022.30 ppb
2023-04-05357905310012.10 ppb
2023-04-05357905310022.10 ppb
2023-07-17358137950013.00 ppb
2023-07-17358137950024.30 ppb
2023-10-24358375390011.90 ppb
2023-10-24358375390022.30 ppb