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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Fallbrook PUD

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.

MORE ABOUT THIS CONTAMINANT

 

92

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND160ND
20160.450 ppb163ND - 2.70 ppb
20172.29 ppb164ND - 13.0 ppb
20180.883 ppb123ND - 3.80 ppb
20192.93 ppb165ND - 14.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.. This health guideline protects against system toxicity.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-113761-902-0955ND
2014-03-113761-900-1034ND
2014-03-113761-901-0933ND
2014-03-113761-903-0800ND
2014-06-113761-903-0900ND
2014-06-113761-902-0940ND
2014-06-113761-901-0810ND
2014-06-113761-900-0920ND
2014-09-093761-903-0721ND
2014-09-093761-902-0859ND
2014-09-093761-901-0838ND
2014-09-093761-900-0936ND
2014-12-093761-902-0937ND
2014-12-093761-901-1003ND
2014-12-093761-903-0930ND
2014-12-093761-900-0916ND
2015-03-103761-901-0615ND
2015-03-103761-902-0630ND
2015-03-103761-903-1105ND
2015-03-103761-900-0700ND
2015-06-093761-903-0810ND
2015-06-093761-902-0945ND
2015-06-093761-900-1015ND
2015-06-093761-901-0928ND
2015-09-083761-900-0855ND
2015-09-083761-903-0850ND
2015-09-083761-902-0820ND
2015-09-083761-901-0805ND
2015-12-083761-900-0810ND
2015-12-083761-903-0840ND
2015-12-083761-902-0815ND
2015-12-083761-901-0830ND
2016-03-083761-901-0720ND
2016-03-083761-900-0620ND
2016-03-083761-903-0850ND
2016-03-083761-902-0635ND
2016-06-143761-900-1115ND
2016-06-143761-901-1000ND
2016-06-143761-903-0900ND
2016-06-143761-902-1015ND
2016-09-133761-901-08402.20 ppb
2016-09-133761-903-1000ND
2016-09-133761-902-09052.70 ppb
2016-09-133761-900-09152.30 ppb
2016-12-133761-900-0915ND
2016-12-133761-902-0850ND
2016-12-133761-903-0910ND
2016-12-133761-901-0815ND
2017-03-144790-900-0900ND
2017-03-144790-902-0845ND
2017-03-144790-903-0900ND
2017-03-144790-901-0950ND
2017-06-134790-900-0745ND
2017-06-134790-903-0855ND
2017-06-134790-901-0705ND
2017-06-134790-902-0720ND
2017-09-124790-900-083013.0 ppb
2017-09-124790-901-07556.50 ppb
2017-09-124790-903-08104.10 ppb
2017-09-124790-902-081513.0 ppb
2017-12-124790-901-0945ND
2017-12-124790-903-0840ND
2017-12-124790-902-1015ND
2017-12-124790-900-1035ND
2018-03-134790-902-1015ND
2018-03-134790-900-1045ND
2018-03-134790-901-0935ND
2018-03-134790-903-0810ND
2018-06-124790-902-1025ND
2018-06-124790-901-1010ND
2018-06-124790-903-0840ND
2018-06-124790-900-0735ND
2018-09-114790-900-10453.60 ppb
2018-09-114790-901-10003.80 ppb
2018-09-114790-903-0845ND
2018-09-114790-902-10303.20 ppb
2019-03-124790-901-0920ND
2019-03-124790-900-1015ND
2019-03-124790-903-0820ND
2019-03-124790-902-0940ND
2019-06-114790-903-075511.0 ppb
2019-06-114790-901-09558.30 ppb
2019-06-114790-900-10559.30 ppb
2019-06-114790-902-101514.0 ppb
2019-09-104790-902-1015ND
2019-09-104790-901-0935ND
2019-09-104790-900-1045ND
2019-09-104790-903-0755ND
2019-12-104790-903-1030ND
2019-12-104790-901-08554.20 ppb
2019-12-104790-900-0810ND
2019-12-104790-902-0840ND