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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Skagit County Public Utility District 1 Judy Reservoir

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.

 

181

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20122.23 ppb2014ND - 4.50 ppb
20132.72 ppb32321.20 ppb - 5.20 ppb
20142.14 ppb3230ND - 4.90 ppb
20150.369 ppb325ND - 3.00 ppb
2016ND330ND
20170.666 ppb329ND - 2.90 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
2012-03-28109412.60 ppb
2012-03-28109423.50 ppb
2012-03-2810943ND
2012-03-28109443.20 ppb
2012-06-28246852.10 ppb
2012-06-28246863.00 ppb
2012-06-28246842.80 ppb
2012-06-2824687ND
2012-09-2738677ND
2012-09-2738675ND
2012-09-2738674ND
2012-09-2738676ND
2012-10-30437222.50 ppb
2012-10-30437193.90 ppb
2012-10-30437214.10 ppb
2012-10-30437204.40 ppb
2012-11-02437402.60 ppb
2012-11-02437424.50 ppb
2012-11-02437412.60 ppb
2012-11-02437432.70 ppb
2013-01-28018434.20 ppb
2013-01-28018724.50 ppb
2013-01-28018743.40 ppb
2013-01-28018754.10 ppb
2013-01-29018765.20 ppb
2013-01-29018773.30 ppb
2013-01-30018794.40 ppb
2013-01-30018783.30 ppb
2013-04-22087342.70 ppb
2013-04-22087352.90 ppb
2013-04-22087333.20 ppb
2013-04-22087323.30 ppb
2013-04-23087362.60 ppb
2013-04-23087393.50 ppb
2013-04-23087383.50 ppb
2013-04-23087372.40 ppb
2013-07-22164742.40 ppb
2013-07-22164772.20 ppb
2013-07-22164752.40 ppb
2013-07-22164762.10 ppb
2013-07-23164812.70 ppb
2013-07-23164791.70 ppb
2013-07-23164802.60 ppb
2013-07-23164782.10 ppb
2013-10-28283691.70 ppb
2013-10-28283671.20 ppb
2013-10-28283701.60 ppb
2013-10-28283711.70 ppb
2013-10-28283681.70 ppb
2013-10-29283731.30 ppb
2013-10-29283721.50 ppb
2013-10-29283741.50 ppb
2014-01-27025712.30 ppb
2014-01-27025701.70 ppb
2014-01-27025732.20 ppb
2014-01-27025722.20 ppb
2014-01-28025762.20 ppb
2014-01-28025771.80 ppb
2014-01-28025742.10 ppb
2014-01-28025752.30 ppb
2014-04-28118984.90 ppb
2014-04-28118964.10 ppb
2014-04-28118973.70 ppb
2014-04-28118952.90 ppb
2014-04-29119023.20 ppb
2014-04-29119003.30 ppb
2014-04-29119013.80 ppb
2014-04-29118994.40 ppb
2014-07-28236311.60 ppb
2014-07-28236361.80 ppb
2014-07-2823633ND
2014-07-28236302.20 ppb
2014-07-28236292.00 ppb
2014-07-28236321.30 ppb
2014-07-28236351.30 ppb
2014-07-2823634ND
2014-10-27744571.20 ppb
2014-10-27744581.20 ppb
2014-10-27744591.20 ppb
2014-10-27744561.30 ppb
2014-10-28744601.30 ppb
2014-10-28744621.80 ppb
2014-10-28744611.70 ppb
2014-10-28744631.40 ppb
2015-01-26036912.40 ppb
2015-01-26036903.00 ppb
2015-01-2603689ND
2015-01-2703889ND
2015-01-27038902.20 ppb
2015-01-2703887ND
2015-01-2703891ND
2015-01-27038882.20 ppb
2015-04-2718349ND
2015-04-2718346ND
2015-04-2718348ND
2015-04-2718351ND
2015-04-27183502.00 ppb
2015-04-2818353ND
2015-04-2818352ND
2015-04-2818347ND
2015-07-2734296ND
2015-07-2734294ND
2015-07-2734295ND
2015-07-2734293ND
2015-07-2834300ND
2015-07-2834298ND
2015-07-2834299ND
2015-07-2834297ND
2015-10-2651254ND
2015-10-2651253ND
2015-10-2651252ND
2015-10-2751481ND
2015-10-2751482ND
2015-10-2751480ND
2015-10-2751483ND
2015-10-2751479ND
2016-01-26ND
2016-01-26ND
2016-01-26ND
2016-01-26ND
2016-01-26ND
2016-01-27ND
2016-01-27ND
2016-01-27ND
2016-04-25ND
2016-04-25ND
2016-04-25ND
2016-04-25ND
2016-04-26ND
2016-04-26ND
2016-04-26ND
2016-04-26ND
2016-04-26ND
2016-07-25ND
2016-07-25ND
2016-07-25ND
2016-07-26ND
2016-07-26ND
2016-07-26ND
2016-07-26ND
2016-07-26ND
2016-10-24ND
2016-10-24ND
2016-10-24ND
2016-10-25ND
2016-10-25ND
2016-10-25ND
2016-10-25ND
2016-10-25ND
2017-01-23ND
2017-01-23ND
2017-01-23ND
2017-01-24ND
2017-01-24ND
2017-01-24ND
2017-01-24ND
2017-01-24ND
2017-04-242.00 ppb
2017-04-242.00 ppb
2017-04-242.40 ppb
2017-04-242.50 ppb
2017-04-242.40 ppb
2017-04-242.30 ppb
2017-04-252.60 ppb
2017-04-252.90 ppb
2017-07-24ND
2017-07-24ND
2017-07-242.20 ppb
2017-07-24ND
2017-07-25ND
2017-07-25ND
2017-07-25ND
2017-07-25ND
2017-10-23ND
2017-10-23ND
2017-10-23ND
2017-10-23ND
2017-10-25ND
2017-10-25ND
2017-10-25ND
2017-10-25ND