Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Charles Town Utilities

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
2015ND160ND
20163.89 ppb1610ND - 14.9 ppb
20176.61 ppb1612ND - 24.2 ppb
20181.69 ppb1611ND - 8.25 ppb
20193.26 ppb1615ND - 11.6 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
2014-02-11S2HAA_21404329ND
2014-02-11S2HAA_21404328ND
2014-02-11S2HAA_21404327ND
2014-02-11S2HAA_21404326ND
2014-05-13S2HAA_21413405ND
2014-05-13S2HAA_21413404ND
2014-05-13S2HAA_21413403ND
2014-05-13S2HAA_21413402ND
2014-08-14S2HAA_21422702ND
2014-08-14S2HAA_21422701ND
2014-08-14S2HAA_21422703ND
2014-08-14S2HAA_21422704ND
2014-11-13S2HAA_21431830ND
2014-11-13S2HAA_21431829ND
2014-11-13S2HAA_21431828ND
2014-11-13S2HAA_21431827ND
2015-02-11S2HAA_21504311ND
2015-02-11S2HAA_21504310ND
2015-02-11S2HAA_21504309ND
2015-02-11S2HAA_21504308ND
2015-05-12S2HAA_21513327ND
2015-05-12S2HAA_21513328ND
2015-05-12S2HAA_21513330ND
2015-05-12S2HAA_21513329ND
2015-08-12S2DBP_235440-201ND
2015-08-12S2DBP_235439-201ND
2015-08-12S2DBP_235438-201ND
2015-08-12S2DBP_235437-201ND
2015-11-10240067-2015-DWND
2015-11-10240066-2015-DWND
2015-11-10240065-2015-DWND
2015-11-10240064-2015-DWND
2016-02-09243992-2016-DWND
2016-02-09243991-2016-DWND
2016-02-09243993-2016-DWND
2016-02-09243994-2016-DWND
2016-05-2416052798-04AND
2016-05-2416052798-03A1.13 ppb
2016-05-2416052798-02AND
2016-05-2416052798-01A1.02 ppb
2016-08-0816081300-03A3.08 ppb
2016-08-0816081300-02A6.52 ppb
2016-08-0816081300-01A14.9 ppb
2016-08-2216083479-01A8.15 ppb
2016-11-0816111182-01A1.37 ppb
2016-11-0816111182-04A9.73 ppb
2016-11-0816111182-03A13.9 ppb
2016-11-0816111182-02A2.41 ppb
2017-02-1517022194-04A12.7 ppb
2017-02-1517022194-03AND
2017-02-1517022194-02A8.69 ppb
2017-02-1517022194-01A1.41 ppb
2017-05-0817051238-04A7.93 ppb
2017-05-0817051238-03AND
2017-05-0817051238-02A8.11 ppb
2017-05-0817051238-01AND
2017-08-0717081305-02A10.7 ppb
2017-08-0717081305-01A2.38 ppb
2017-08-0717081305-03A1.94 ppb
2017-08-0717081305-04A24.2 ppb
2017-11-0617111125-04A8.25 ppb
2017-11-0617111125-03A10.6 ppb
2017-11-0617111125-02A8.77 ppb
2017-11-0617111125-01AND
2018-02-1318021960-04AND
2018-02-1318021960-03A1.38 ppb
2018-02-1318021960-02A1.65 ppb
2018-02-1318021960-01AND
2018-05-0718051270-01AND
2018-05-0718051270-02A1.07 ppb
2018-05-0718051270-04A3.74 ppb
2018-05-0718051270-03AND
2018-08-0618081432-04AND
2018-08-0618081432-03A2.37 ppb
2018-08-0618081432-02A2.12 ppb
2018-08-0618081432-01A8.25 ppb
2018-11-1918112739-04A1.35 ppb
2018-11-1918112739-03A1.55 ppb
2018-11-1918112739-02A1.69 ppb
2018-11-1918112739-01A1.84 ppb
2019-02-1119021406-02A3.61 ppb
2019-02-1119021406-01A6.92 ppb
2019-02-1119021406-03A2.32 ppb
2019-02-1119021406-04A11.6 ppb
2019-05-1319051896-04A1.50 ppb
2019-05-1319051896-03A1.51 ppb
2019-05-1319051896-02A1.61 ppb
2019-05-1319051896-01A1.77 ppb
2019-08-1219081650-04A2.87 ppb
2019-08-1219081650-03AND
2019-08-1219081650-02A4.07 ppb
2019-08-1219081650-01A3.15 ppb
2019-11-197392560012.70 ppb
2019-11-197392560042.10 ppb
2019-11-197392560033.80 ppb
2019-11-197392560022.60 ppb