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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Ridgeland

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

 

80

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.31 ppb169ND - 5.00 ppb
20150.625 ppb163ND - 6.00 ppb
20161.81 ppb165ND - 7.00 ppb
20170.250 ppb162ND - 2.00 ppb
2018N/A00N/A
20195.88 ppb166ND - 29.0 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
2014-03-10140311-022HA2.00 ppb
2014-03-10140311-021HAND
2014-03-10140311-014HA3.00 ppb
2014-03-10140311-013HA5.00 ppb
2014-06-09140610-018HAND
2014-06-09140610-017HA4.00 ppb
2014-06-09140610-010HA4.00 ppb
2014-06-09140610-009HA5.00 ppb
2014-09-09140910-004HAND
2014-09-09140910-001HA5.00 ppb
2014-09-09140910-002HA5.00 ppb
2014-09-09140910-003HA4.00 ppb
2014-12-09141210-004HAND
2014-12-09141210-003HAND
2014-12-09141210-002HAND
2014-12-09141210-001HAND
2015-03-11150312-025HAND
2015-03-11150312-026HAND
2015-03-11150312-028HAND
2015-03-11150312-027HAND
2015-06-08150609-004HAND
2015-06-08150609-003HAND
2015-06-08150609-002HAND
2015-06-08150609-001HAND
2015-09-14150915-010HAND
2015-09-14150915-009HAND
2015-09-14150915-002HAND
2015-09-14150915-001HAND
2015-12-07151208-006HA2.00 ppb
2015-12-07151208-001HA6.00 ppb
2015-12-07151208-002HAND
2015-12-07151208-005HA2.00 ppb
2016-03-15160316-008HAND
2016-03-15160316-007HAND
2016-03-15160316-006HAND
2016-03-15160316-005HA4.00 ppb
2016-06-07160608-005HAND
2016-06-07160608-008HAND
2016-06-07160608-007HAND
2016-06-07160608-006HAND
2016-09-06160907-010HAND
2016-09-06160907-009HAND
2016-09-06160907-004HAND
2016-09-06160907-003HAND
2016-12-12161213-008HA6.00 ppb
2016-12-12161213-007HA7.00 ppb
2016-12-12161213-005HA6.00 ppb
2016-12-12161213-004HA6.00 ppb
2017-03-06170307-010HAND
2017-03-06170307-007HAND
2017-03-06170307-008HAND
2017-03-06170307-009HAND
2017-06-05170606-006HAND
2017-06-05170606-005HAND
2017-06-05170606-004HAND
2017-06-05170606-003HAND
2017-09-05170906-001HAND
2017-09-05170906-002HAND
2017-09-05170906-004HAND
2017-09-05170906-003HAND
2017-12-05171206-008HA2.00 ppb
2017-12-05171206-007HAND
2017-12-05171206-006HAND
2017-12-05171206-005HA2.00 ppb
2019-02-25190226-006HAND
2019-02-25190226-005HAND
2019-02-25190226-004HAND
2019-02-25190226-003HAND
2019-05-21190522-008HAND
2019-05-21190522-005HAND
2019-05-21190522-006HA3.00 ppb
2019-05-21190522-007HAND
2019-09-04190905-009HAND
2019-09-04190905-008HAND
2019-09-04190905-007HA27.0 ppb
2019-09-04190905-006HA29.0 ppb
2019-12-11191212-007HA13.0 ppb
2019-12-11191212-010HAND
2019-12-11191212-009HA8.00 ppb
2019-12-11191212-008HA14.0 ppb