Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Sulphur 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.

MORE ABOUT THIS CONTAMINANT

 

184

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND240ND
20150.513 ppb326ND - 3.00 ppb
20161.67 ppb3210ND - 7.80 ppb
20170.234 ppb328ND - 1.30 ppb
2018ND320ND
2019ND320ND

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
2014-05-21L0043246-01ND
2014-05-21L0043246-02ND
2014-05-21L0043246-03ND
2014-05-21L0043246-04ND
2014-05-21L0043246-01ND
2014-05-21L0043246-02ND
2014-05-21L0043246-03ND
2014-05-21L0043246-04ND
2014-08-13L0046638-01ND
2014-08-13L0046638-02ND
2014-08-13L0046638-03ND
2014-08-13L0046638-04ND
2014-08-13L0046638-01ND
2014-08-13L0046638-02ND
2014-08-13L0046638-03ND
2014-08-13L0046638-04ND
2014-11-18L0050771-01ND
2014-11-18L0050771-02ND
2014-11-18L0050771-03ND
2014-11-18L0050771-04ND
2014-11-18L0050771-01ND
2014-11-18L0050771-02ND
2014-11-18L0050771-03ND
2014-11-18L0050771-04ND
2015-02-12LA3487-1ND
2015-02-12LA3487-2ND
2015-02-12LA3487-3ND
2015-02-12LA3487-4ND
2015-02-12LA3487-1ND
2015-02-12LA3487-2ND
2015-02-12LA3487-3ND
2015-02-12LA3487-4ND
2015-05-21LA7268-1ND
2015-05-21LA7268-2ND
2015-05-21LA7268-3ND
2015-05-21LA7268-4ND
2015-05-21LA7268-1ND
2015-05-21LA7268-2ND
2015-05-21LA7268-3ND
2015-05-21LA7268-4ND
2015-09-09LA11381-1ND
2015-09-09LA11381-22.80 ppb
2015-09-09LA11381-32.40 ppb
2015-09-09LA11381-43.00 ppb
2015-09-09LA11381-1ND
2015-09-09LA11381-22.80 ppb
2015-09-09LA11381-32.40 ppb
2015-09-09LA11381-43.00 ppb
2015-12-03LA14715-1ND
2015-12-03LA14715-2ND
2015-12-03LA14715-3ND
2015-12-03LA14715-4ND
2015-12-03LA14715-1ND
2015-12-03LA14715-2ND
2015-12-03LA14715-3ND
2015-12-03LA14715-4ND
2016-02-23LA17652-1ND
2016-02-23LA17652-2ND
2016-02-23LA17652-3ND
2016-02-23LA17652-4ND
2016-02-23LA17652-1ND
2016-02-23LA17652-2ND
2016-02-23LA17652-3ND
2016-02-23LA17652-4ND
2016-05-17LA20834-1ND
2016-05-17LA20834-2ND
2016-05-17LA20834-3ND
2016-05-17LA20834-4ND
2016-05-17LA20834-1ND
2016-05-17LA20834-2ND
2016-05-17LA20834-3ND
2016-05-17LA20834-4ND
2016-08-16LA24340-14.60 ppb
2016-08-16LA24340-27.30 ppb
2016-08-16LA24340-35.20 ppb
2016-08-16LA24340-47.80 ppb
2016-08-16LA24340-14.60 ppb
2016-08-16LA24340-27.30 ppb
2016-08-16LA24340-35.20 ppb
2016-08-16LA24340-47.80 ppb
2016-11-29LA28117-11.80 ppb
2016-11-29LA28117-2ND
2016-11-29LA28118-1ND
2016-11-29LA28118-2ND
2016-11-29LA28117-11.80 ppb
2016-11-29LA28117-2ND
2016-11-29LA28118-1ND
2016-11-29LA28118-2ND
2017-02-1035294574001ND
2017-02-1035294574002ND
2017-02-1035294574003ND
2017-02-1035294574004ND
2017-02-1035294574001ND
2017-02-1035294574002ND
2017-02-1035294574003ND
2017-02-1035294574004ND
2017-05-1235312127005ND
2017-05-1235312127006ND
2017-05-1235312127007ND
2017-05-1235312127008ND
2017-05-1235312127005ND
2017-05-1235312127006ND
2017-05-1235312127007ND
2017-05-1235312127008ND
2017-08-0435328360001ND
2017-08-0435328360002ND
2017-08-0435328360003ND
2017-08-0435328360004ND
2017-08-0435328360001ND
2017-08-0435328360002ND
2017-08-0435328360003ND
2017-08-0435328360004ND
2017-11-02353461800010.990 ppb
2017-11-02353461800020.610 ppb
2017-11-02353461800031.30 ppb
2017-11-02353461800040.840 ppb
2017-11-02353461800010.990 ppb
2017-11-02353461800020.610 ppb
2017-11-02353461800031.30 ppb
2017-11-02353461800040.840 ppb
2018-02-0935374053001ND
2018-02-0935374053002ND
2018-02-0935374053003ND
2018-02-0935374053004ND
2018-02-0935374053001ND
2018-02-0935374053002ND
2018-02-0935374053003ND
2018-02-0935374053004ND
2018-05-0235390319001ND
2018-05-0235390319002ND
2018-05-0235390319003ND
2018-05-0235390319004ND
2018-05-0235390319001ND
2018-05-0235390319002ND
2018-05-0235390319003ND
2018-05-0235390319004ND
2018-08-0835409908001ND
2018-08-0835409908002ND
2018-08-0835409908003ND
2018-08-0835409908004ND
2018-08-0835409908001ND
2018-08-0835409908002ND
2018-08-0835409908003ND
2018-08-0835409908004ND
2018-11-0835430428001ND
2018-11-0835430428002ND
2018-11-0835430428003ND
2018-11-0835430428004ND
2018-11-0835430428001ND
2018-11-0835430428002ND
2018-11-0835430428003ND
2018-11-0835430428004ND
2019-02-0635447077001ND
2019-02-0635447077002ND
2019-02-0635447077003ND
2019-02-0635447077004ND
2019-02-0635447077001ND
2019-02-0635447077002ND
2019-02-0635447077003ND
2019-02-0635447077004ND
2019-05-0235466136001ND
2019-05-0235466136002ND
2019-05-0235466136003ND
2019-05-0235466136004ND
2019-05-0235466136001ND
2019-05-0235466136002ND
2019-05-0235466136003ND
2019-05-0235466136004ND
2019-08-0835489016001ND
2019-08-0835489016002ND
2019-08-0835489016003ND
2019-08-0835489016004ND
2019-08-0835489016001ND
2019-08-0835489016002ND
2019-08-0835489016003ND
2019-08-0835489016004ND
2019-11-1435512857001ND
2019-11-1435512857002ND
2019-11-1435512857003ND
2019-11-1435512857004ND
2019-11-1435512857001ND
2019-11-1435512857002ND
2019-11-1435512857003ND
2019-11-1435512857004ND