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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Calleguas Municipal Water District

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

 

283

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND480ND
2015ND470ND
20160.0851 ppb472ND - 2.00 ppb
2017ND470ND
2018ND470ND
2019ND470ND

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
2014-01-075867-025-1345ND
2014-01-075867-026-1445ND
2014-01-075867-027-0900ND
2014-01-075867-028-0800ND
2014-01-075867-029-1230ND
2014-01-075867-030-1315ND
2014-01-075867-031-1300ND
2014-01-075867-032-1140ND
2014-01-075867-033-1030ND
2014-01-075867-034-1050ND
2014-01-075867-035-1110ND
2014-01-075867-036-0940ND
2014-04-085867-025-1400ND
2014-04-085867-026-1430ND
2014-04-085867-027-0905ND
2014-04-085867-028-0830ND
2014-04-085867-029-1230ND
2014-04-085867-030-1325ND
2014-04-085867-031-1250ND
2014-04-085867-032-1145ND
2014-04-085867-033-0940ND
2014-04-085867-034-1030ND
2014-04-085867-035-1115ND
2014-04-085867-036-1010ND
2014-07-085867-025-1355ND
2014-07-085867-026-1501ND
2014-07-085867-027-0841ND
2014-07-085867-028-0810ND
2014-07-085867-029-1251ND
2014-07-085867-030-1331ND
2014-07-085867-031-1315ND
2014-07-085867-032-1144ND
2014-07-085867-033-0955ND
2014-07-085867-034-1026ND
2014-07-085867-035-1114ND
2014-07-085867-036-0913ND
2014-10-065867-025-1127ND
2014-10-065867-026-1030ND
2014-10-065867-027-0842ND
2014-10-065867-028-1500ND
2014-10-065867-029-1221ND
2014-10-065867-030-1208ND
2014-10-065867-031-1240ND
2014-10-065867-032-1310ND
2014-10-065867-033-1420ND
2014-10-065867-034-1352ND
2014-10-065867-035-1331ND
2014-10-065867-036-1440ND
2015-01-065867-025-1018ND
2015-01-065867-026-0945ND
2015-01-065867-027-0830ND
2015-01-065867-028-0800ND
2015-01-065867-029-1143ND
2015-01-065867-030-1045ND
2015-01-065867-031-1105ND
2015-01-065867-032-1214ND
2015-01-065867-033-1350ND
2015-01-065867-034-1320ND
2015-01-065867-035-1257ND
2015-01-065867-036-1420ND
2015-04-065867-025-1327ND
2015-04-065867-026-1403ND
2015-04-065867-027-0855ND
2015-04-065867-028-0810ND
2015-04-065867-029-1208ND
2015-04-065867-030-1243ND
2015-04-065867-031-1225ND
2015-04-065867-032-1130ND
2015-04-065867-033-1011ND
2015-04-065867-034-1035ND
2015-04-065867-035-1056ND
2015-04-065867-036-0925ND
2015-07-075867-025-1301ND
2015-07-075867-026-1419ND
2015-07-075867-028-0801ND
2015-07-075867-029-1154ND
2015-07-075867-030-1231ND
2015-07-075867-031-1215ND
2015-07-075867-032-1107ND
2015-07-075867-033-0930ND
2015-07-075867-034-1010ND
2015-07-075867-035-1035ND
2015-07-075867-036-0955ND
2015-10-125867-025-1333ND
2015-10-125867-026-1410ND
2015-10-125867-027-0900ND
2015-10-125867-028-0819ND
2015-10-125867-029-1202ND
2015-10-125867-030-1252ND
2015-10-125867-031-1234ND
2015-10-125867-032-1118ND
2015-10-125867-033-0954ND
2015-10-125867-034-1019ND
2015-10-125867-035-1051ND
2015-10-125867-036-0935ND
2016-01-115867-025-1509ND
2016-01-115867-026-1536ND
2016-01-115867-027-0830ND
2016-01-115867-028-0801ND
2016-01-115867-029-1256ND
2016-01-115867-030-1331ND
2016-01-115867-031-1315ND
2016-01-115867-032-1139ND
2016-01-115867-033-0912ND
2016-01-115867-035-1221ND
2016-01-115867-036-0928ND
2016-04-115867-025-1339ND
2016-04-115867-026-1430ND
2016-04-115867-027-1505ND
2016-04-115867-028-0756ND
2016-04-115867-029-1044ND
2016-04-115867-030-1305ND
2016-04-115867-031-1231ND
2016-04-115867-032-1118ND
2016-04-115867-033-0835ND
2016-04-115867-034-0930ND
2016-04-115867-035-1006ND
2016-04-115867-036-0902ND
2016-07-125867-025-1322ND
2016-07-125867-026-1208ND
2016-07-125867-027-0844ND
2016-07-125867-028-0800ND
2016-07-125867-029-1152ND
2016-07-125867-030-12532.00 ppb
2016-07-125867-031-12222.00 ppb
2016-07-125867-032-1104ND
2016-07-125867-033-0909ND
2016-07-125867-034-0952ND
2016-07-125867-035-1043ND
2016-07-125867-036-0934ND
2016-10-125867-025-1326ND
2016-10-125867-026-1418ND
2016-10-125867-027-0833ND
2016-10-125867-028-0802ND
2016-10-125867-029-1202ND
2016-10-125867-030-1254ND
2016-10-125867-031-1239ND
2016-10-125867-032-1022ND
2016-10-125867-033-0854ND
2016-10-125867-034-0930ND
2016-10-125867-035-1003ND
2016-10-125867-036-0909ND
2017-01-095867-025-1400ND
2017-01-095867-026-1433ND
2017-01-095867-027-0906ND
2017-01-095867-028-0832ND
2017-01-095867-029-1230ND
2017-01-095867-030-1326ND
2017-01-095867-031-1311ND
2017-01-095867-032-1133ND
2017-01-095867-033-0934ND
2017-01-095867-034-1002ND
2017-01-095867-035-1102ND
2017-01-095867-036-1023ND
2017-04-105867-025-1324ND
2017-04-105867-026-1401ND
2017-04-105867-027-0830ND
2017-04-105867-028-0800ND
2017-04-105867-029-1157ND
2017-04-105867-030-1237ND
2017-04-105867-031-1222ND
2017-04-105867-032-1110ND
2017-04-105867-033-0856ND
2017-04-105867-034-1009ND
2017-04-105867-035-1043ND
2017-04-105867-036-0917ND
2017-07-125867-025-1346ND
2017-07-125867-026-1310ND
2017-07-125867-027-0811ND
2017-07-125867-028-0745ND
2017-07-125867-029-1152ND
2017-07-125867-030-1243ND
2017-07-125867-031-1222ND
2017-07-125867-032-1113ND
2017-07-125867-033-0846ND
2017-07-125867-034-0949ND
2017-07-125867-035-1043ND
2017-07-125867-036-0912ND
2017-10-095867-025-1333ND
2017-10-095867-026-1305ND
2017-10-095867-027-0820ND
2017-10-095867-028-0745ND
2017-10-095867-029-1141ND
2017-10-095867-030-1221ND
2017-10-095867-031-1205ND
2017-10-095867-032-1110ND
2017-10-095867-033-0927ND
2017-10-095867-034-0957ND
2017-10-095867-035-1037ND
2018-01-085867-025-1330ND
2018-01-085867-026-1415ND
2018-01-085867-027-0900ND
2018-01-085867-028-0830ND
2018-01-085867-029-1140ND
2018-01-085867-030-1255ND
2018-01-085867-031-1235ND
2018-01-085867-032-1112ND
2018-01-085867-033-0920ND
2018-01-085867-034-1010ND
2018-01-085867-035-1035ND
2018-01-085867-036-0950ND
2018-04-095867-025-1422ND
2018-04-095867-026-1355ND
2018-04-095867-027-0840ND
2018-04-095867-028-0809ND
2018-04-095867-029-1236ND
2018-04-095867-030-1324ND
2018-04-095867-031-1311ND
2018-04-095867-032-1131ND
2018-04-095867-033-0915ND
2018-04-095867-034-1017ND
2018-04-095867-035-1100ND
2018-04-095867-036-0940ND
2018-07-095867-025-1032ND
2018-07-095867-026-0955ND
2018-07-095867-027-0820ND
2018-07-095867-028-0747ND
2018-07-095867-029-1255ND
2018-07-095867-030-1150ND
2018-07-095867-031-1229ND
2018-07-095867-032-1411ND
2018-07-095867-033-0850ND
2018-07-095867-034-1117ND
2018-07-095867-035-1350ND
2018-10-085867-025-1306ND
2018-10-085867-026-1243ND
2018-10-085867-027-0813ND
2018-10-085867-028-0738ND
2018-10-085867-029-1137ND
2018-10-085867-030-1211ND
2018-10-085867-031-1155ND
2018-10-085867-032-1055ND
2018-10-085867-033-0916ND
2018-10-085867-034-0957ND
2018-10-085867-035-1021ND
2018-10-085867-036-0841ND
2019-01-085867-025-1412ND
2019-01-085867-026-1343ND
2019-01-085867-027-0812ND
2019-01-085867-028-0739ND
2019-01-085867-029-1142ND
2019-01-085867-030-1221ND
2019-01-085867-031-1209ND
2019-01-085867-032-1057ND
2019-01-085867-033-0851ND
2019-01-085867-034-1004ND
2019-01-085867-035-1036ND
2019-01-085867-036-0921ND
2019-04-085867-025-1346ND
2019-04-085867-026-1312ND
2019-04-085867-027-0831ND
2019-04-085867-028-0752ND
2019-04-085867-029-1203ND
2019-04-085867-030-1247ND
2019-04-085867-031-1231ND
2019-04-085867-032-1104ND
2019-04-085867-033-0903ND
2019-04-085867-034-0954ND
2019-04-085867-035-1041ND
2019-04-085867-036-0935ND
2019-07-085867-025-1417ND
2019-07-085867-026-1330ND
2019-07-085867-027-0837ND
2019-07-085867-028-0810ND
2019-07-085867-029-1222ND
2019-07-085867-030-1306ND
2019-07-085867-031-1247ND
2019-07-085867-032-1117ND
2019-07-085867-033-0923ND
2019-07-085867-034-1012ND
2019-07-085867-035-1056ND
2019-07-085867-036-0952ND
2019-10-075867-026-1147ND
2019-10-075867-027-0827ND
2019-10-075867-028-0753ND
2019-10-075867-029-1352ND
2019-10-075867-030-1313ND
2019-10-075867-031-1331ND
2019-10-075867-032-1046ND
2019-10-075867-033-0855ND
2019-10-075867-034-0957ND
2019-10-075867-035-1436ND
2019-10-075867-036-0927ND