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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

East Orange County Water District - Wz

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

 

169

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND240ND
2015ND320ND
20160.698 ppb327ND - 5.27 ppb
20171.17 ppb2513ND - 4.09 ppb
20181.05 ppb326ND - 11.8 ppb
20191.14 ppb249ND - 6.13 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
2014-03-049469-803-1325ND
2014-03-049469-804-1100ND
2014-03-049469-805-1115ND
2014-03-049469-806-0907ND
2014-03-049469-807-1354ND
2014-03-049469-808-1142ND
2014-03-049469-809-1340ND
2014-03-049469-810-1115ND
2014-09-029469-803-1132ND
2014-09-029469-804-0953ND
2014-09-029469-805-1257ND
2014-09-029469-806-1220ND
2014-09-029469-807-1350ND
2014-09-029469-808-1330ND
2014-09-029469-809-1207ND
2014-09-029469-810-1245ND
2014-12-029469-803-0902ND
2014-12-029469-804-1405ND
2014-12-029469-805-1318ND
2014-12-029469-806-0952ND
2014-12-029469-807-1442ND
2014-12-029469-808-1426ND
2014-12-029469-809-0929ND
2014-12-029469-810-1256ND
2015-03-039469-803-0910ND
2015-03-039469-804-1108ND
2015-03-039469-805-1206ND
2015-03-039469-806-1045ND
2015-03-039469-807-1334ND
2015-03-039469-808-1254ND
2015-03-039469-809-1012ND
2015-03-039469-810-1211ND
2015-06-029588-803-1340ND
2015-06-029588-804-1241ND
2015-06-029588-805-1445ND
2015-06-029588-806-1415ND
2015-06-029588-807-1550ND
2015-06-029588-808-1515ND
2015-06-029588-809-1406ND
2015-06-029588-810-1445ND
2015-09-019469-803-1055ND
2015-09-019469-804-1148ND
2015-09-019469-805-1210ND
2015-09-019469-806-1130ND
2015-09-019469-807-1334ND
2015-09-019469-808-0925ND
2015-09-019469-809-1115ND
2015-09-019469-810-1215ND
2015-12-019469-804-1535ND
2015-12-019469-805-1318ND
2015-12-019469-806-1240ND
2015-12-019469-807-1500ND
2015-12-019469-808-0917ND
2015-12-019469-809-1225ND
2015-12-019469-810-1328ND
2015-12-079469-803-1445ND
2016-03-019469-803-1001ND
2016-03-019469-804-11553.95 ppb
2016-03-019469-805-12253.04 ppb
2016-03-019469-806-13552.26 ppb
2016-03-019469-807-08551.82 ppb
2016-03-019469-808-12453.26 ppb
2016-03-019469-809-11302.74 ppb
2016-03-019469-810-12125.27 ppb
2016-06-079469-803-1057ND
2016-06-079469-804-1307ND
2016-06-079469-805-1332ND
2016-06-079469-806-1235ND
2016-06-079469-807-0826ND
2016-06-079469-808-0852ND
2016-06-079469-809-1217ND
2016-06-079469-810-1343ND
2016-09-069469-803-1000ND
2016-09-069469-804-1237ND
2016-09-069469-805-1132ND
2016-09-069469-806-1050ND
2016-09-069469-807-1216ND
2016-09-069469-808-1200ND
2016-09-069469-809-1034ND
2016-09-069469-810-1135ND
2016-12-069469-803-0944ND
2016-12-069469-804-0902ND
2016-12-069469-805-1115ND
2016-12-069469-806-1215ND
2016-12-069469-807-1347ND
2016-12-069469-808-1235ND
2016-12-069469-809-0920ND
2016-12-069469-810-1120ND
2017-03-079469-803-1116ND
2017-03-079469-804-11441.81 ppb
2017-03-079469-805-14482.31 ppb
2017-03-079469-806-09183.61 ppb
2017-03-079469-807-15024.09 ppb
2017-03-079469-808-12542.28 ppb
2017-03-079469-809-14281.92 ppb
2017-03-079469-810-12182.19 ppb
2017-06-069469-803-1311ND
2017-06-069469-804-1050ND
2017-06-069469-805-13021.35 ppb
2017-06-069469-805-14021.35 ppb
2017-06-069469-806-1112ND
2017-06-069469-807-1030ND
2017-06-069469-808-0940ND
2017-06-069469-809-11371.04 ppb
2017-06-069469-810-1410ND
2017-12-059469-803-12572.72 ppb
2017-12-059469-804-0844ND
2017-12-059469-805-1124ND
2017-12-059469-806-1436ND
2017-12-059469-807-09592.16 ppb
2017-12-059469-808-10142.40 ppb
2017-12-059469-809-1457ND
2017-12-059469-810-1118ND
2018-03-069469-803-0851ND
2018-03-069469-804-1001ND
2018-03-069469-805-1030ND
2018-03-069469-806-1229ND
2018-03-069469-807-1119ND
2018-03-069469-808-1312ND
2018-03-069469-809-1152ND
2018-03-069469-810-1049ND
2018-06-059469-803-152610.1 ppb
2018-06-059469-804-1456ND
2018-06-059469-805-1030ND
2018-06-059469-806-1330ND
2018-06-059469-807-0915ND
2018-06-059469-808-115611.8 ppb
2018-06-059469-809-1400ND
2018-06-059469-810-1210ND
2018-09-049469-803-1315ND
2018-09-049469-804-10512.17 ppb
2018-09-049469-805-09553.49 ppb
2018-09-049469-806-11143.69 ppb
2018-09-049469-807-08522.48 ppb
2018-09-049469-808-0914ND
2018-09-049469-809-1132ND
2018-09-049469-810-1007ND
2018-12-049469-803-1134ND
2018-12-049469-804-1105ND
2018-12-049469-805-1027ND
2018-12-049469-806-1038ND
2018-12-049469-807-1414ND
2018-12-049469-808-1426ND
2018-12-049469-809-1158ND
2018-12-049469-810-1215ND
2019-03-059469-803-0948ND
2019-03-059469-804-1105ND
2019-03-059469-805-1151ND
2019-03-059469-806-1426ND
2019-03-059469-807-1405ND
2019-03-059469-808-1343ND
2019-03-059469-809-1251ND
2019-03-059469-810-1524ND
2019-06-049469-803-1258ND
2019-06-049469-804-1053ND
2019-06-049469-805-09282.15 ppb
2019-06-049469-806-11112.35 ppb
2019-06-049469-807-14323.26 ppb
2019-06-049469-808-10036.13 ppb
2019-06-049469-809-1131ND
2019-06-049469-810-09433.87 ppb
2019-09-039469-803-1018ND
2019-09-039469-804-1159ND
2019-09-039469-805-0930ND
2019-09-039469-806-1111ND
2019-09-039469-807-12242.84 ppb
2019-09-039469-808-13082.39 ppb
2019-09-039469-809-11322.21 ppb
2019-09-039469-810-12492.04 ppb