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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Wilson County Rural Water District 1

NOTE: Wilson County Rural Water District 1 purchases water from Public Wholesale Water Supply District 23 which is required to test for monochloroacetic acid. Sample information shown below was taken by Public Wholesale Water Supply District 23.

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.70 ppb53ND - 3.50 ppb
20131.37 ppb31ND - 4.10 ppb
20144.45 ppb223.90 ppb - 5.00 ppb
20152.05 ppb42ND - 4.70 ppb
20162.70 ppb43ND - 4.00 ppb
20172.35 ppb42ND - 5.80 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

NOTE: Wilson County Rural Water District 1 purchases water from Public Wholesale Water Supply District 23 which is required to test for monochloroacetic acid. Sample information shown below was taken by Public Wholesale Water Supply District 23.

Date Lab ID Result
2012-01-09572230DF2.70 ppb
2012-04-02577003DF3.50 ppb
2012-05-07578599DFND
2012-07-09581145DF2.30 ppb
2012-11-12587871DFND
2013-01-07589238DFND
2013-04-03594341DF4.10 ppb
2013-07-08598185DFND
2014-07-141522936.20 ppb
2015-07-213710254.00 ppb
2016-02-234979230.540 ppb
2016-04-18530470ND
2016-08-226080542.70 ppb
2016-10-036356372.70 ppb
2017-03-13680074ND
2017-05-027504893.50 ppb
2017-07-31809276ND