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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Elma Water District No. 1

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
20141.24 ppb1612ND - 3.05 ppb
20150.861 ppb1611ND - 2.02 ppb
20161.24 ppb1615ND - 2.47 ppb
20171.31 ppb1615ND - 3.38 ppb
20181.24 ppb1613ND - 2.34 ppb
20190.644 ppb168ND - 2.13 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
2014-02-1014P002169-70ND
2014-02-1014P002167-81.36 ppb
2014-02-1014P002165-6ND
2014-02-1014P002171-20.580 ppb
2014-05-1214P007611&12ND
2014-05-1214P007615&16ND
2014-05-1314P007617&81.01 ppb
2014-05-1314P007613&141.43 ppb
2014-08-1214P015646&71.67 ppb
2014-08-1214P015648&92.71 ppb
2014-08-1214P015644&51.95 ppb
2014-08-1214P015650&13.05 ppb
2014-11-1214P022069-701.61 ppb
2014-11-1214P022075-761.88 ppb
2014-11-1214P022071-721.66 ppb
2014-11-1214P022073-740.870 ppb
2015-02-1715P002416ND
2015-02-1715P002418ND
2015-02-1715P002414ND
2015-02-1815P002534ND
2015-05-1315P007060-10.980 ppb
2015-05-1315P0070621.68 ppb
2015-05-1315P007058-91.44 ppb
2015-05-1315P007056-70.860 ppb
2015-08-0715P0136481.59 ppb
2015-08-1115P0136501.21 ppb
2015-08-1115P0136542.02 ppb
2015-08-1115P0136531.60 ppb
2015-11-0915P019519ND
2015-11-0915P0195230.670 ppb
2015-11-0915P0195210.790 ppb
2015-11-0915P0195170.940 ppb
2016-02-0916P0020860.690 ppb
2016-02-0916P0020930.730 ppb
2016-02-0916P002091ND
2016-02-0916P0020881.05 ppb
2016-05-0616P0071161.22 ppb
2016-05-0916P0071140.560 ppb
2016-05-0916P0071121.01 ppb
2016-05-0916P0071101.17 ppb
2016-08-0916P0138540.920 ppb
2016-08-0916P0138520.540 ppb
2016-08-0916P0138561.81 ppb
2016-08-0916P0138581.52 ppb
2016-11-0816P0222442.21 ppb
2016-11-0816P0222382.47 ppb
2016-11-0816P0222411.73 ppb
2016-11-0816P0222402.24 ppb
2017-02-0717P002082-3ND
2017-02-0717P002080-10.600 ppb
2017-02-0717P002084-50.620 ppb
2017-02-0717P002086-70.620 ppb
2017-05-0917P0070582.25 ppb
2017-05-0917P0070540.760 ppb
2017-05-0917P0070521.30 ppb
2017-05-0917P0070561.000 ppb
2017-08-0817P0134321.36 ppb
2017-08-0817P0134302.05 ppb
2017-08-0817P0134340.540 ppb
2017-08-0817P0134281.80 ppb
2017-11-0817P0192543.38 ppb
2017-11-0817P0192612.44 ppb
2017-11-0817P0192571.45 ppb
2017-11-0817P0192590.770 ppb
2018-02-1318P0022141.23 ppb
2018-02-1318P0022180.750 ppb
2018-02-1318P0022162.34 ppb
2018-02-1318P002220ND
2018-06-1818P0070362.20 ppb
2018-06-181P007038&9332ND
2018-06-1818P007034&93302.10 ppb
2018-06-1818P0070040&3999ND
2018-08-1418P013449&501.75 ppb
2018-08-1418P013455&61.43 ppb
2018-08-1418P013451&21.96 ppb
2018-08-1418P013453&41.51 ppb
2018-11-1418P0193521.57 ppb
2018-11-1418P0193491.44 ppb
2018-11-1418P0193460.840 ppb
2018-11-1418P0193500.660 ppb
2019-02-1219P002016 & 7ND
2019-02-1219P002014 & 5ND
2019-02-1219P002018 & 9ND
2019-02-1219P002011 & 2ND
2019-05-1419P006144 & 51.14 ppb
2019-05-1419P0061410.900 ppb
2019-05-1419P0061371.03 ppb
2019-05-1419P006142 & 31.22 ppb
2019-08-1370101237DND
2019-08-1370101237BND
2019-08-1370101237CND
2019-08-1370101237AND
2019-11-1219P017418 & 91.36 ppb
2019-11-1219P017422 & 31.50 ppb
2019-11-1219P017424 & 52.13 ppb
2019-11-1219P017420 & 11.03 ppb