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EWG's Tap Water Database — 2021 UPDATE

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Monobromoacetic acid

California Water Service (CWS) - Los Altos Suburban

Monobromoacetic 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

 

193

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.0727 ppb332ND - 1.20 ppb
20150.231 ppb326ND - 1.40 ppb
20160.253 ppb327ND - 1.40 ppb
20170.141 ppb324ND - 1.20 ppb
20180.188 ppb324ND - 2.00 ppb
20190.0656 ppb322ND - 1.10 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 25 ppb

The EWG Health Guideline of 25 ppb for monobromoacetic 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 muscular degeneration.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-135810-900-1207ND
2014-02-135810-901-1324ND
2014-02-135810-902-1110ND
2014-02-135810-903-1346ND
2014-02-135810-904-1308ND
2014-02-135810-905-1243ND
2014-02-135810-906-1134ND
2014-02-135810-907-1152ND
2014-04-081610-903-0850ND
2014-05-155810-900-1336ND
2014-05-155810-901-1435ND
2014-05-155810-902-1231ND
2014-05-155810-903-14591.20 ppb
2014-05-155810-904-1408ND
2014-05-155810-905-1350ND
2014-05-155810-906-1248ND
2014-05-155810-907-1310ND
2014-08-075810-900-1228ND
2014-08-075810-901-1335ND
2014-08-075810-902-1141ND
2014-08-075810-903-1403ND
2014-08-075810-904-1429ND
2014-08-075810-905-1246ND
2014-08-075810-906-1111ND
2014-08-075810-907-1204ND
2014-11-125810-900-1315ND
2014-11-125810-901-1435ND
2014-11-125810-902-1042ND
2014-11-125810-903-13571.20 ppb
2014-11-125810-904-1332ND
2014-11-125810-905-1252ND
2014-11-125810-906-1144ND
2014-11-125810-907-1220ND
2015-02-095810-900-1619ND
2015-02-095810-901-1333ND
2015-02-095810-902-1705ND
2015-02-095810-903-1304ND
2015-02-095810-904-1220ND
2015-02-095810-905-1455ND
2015-02-095810-906-1715ND
2015-02-095810-907-1550ND
2015-05-145810-900-1246ND
2015-05-145810-901-14121.40 ppb
2015-05-145810-902-10581.20 ppb
2015-05-145810-903-1435ND
2015-05-145810-904-1505ND
2015-05-145810-905-12251.20 ppb
2015-05-145810-906-1124ND
2015-05-145810-907-1147ND
2015-08-115810-900-1518ND
2015-08-115810-901-12001.20 ppb
2015-08-115810-902-1355ND
2015-08-115810-903-13231.20 ppb
2015-08-115810-904-1108ND
2015-08-115810-905-1600ND
2015-08-115810-906-1423ND
2015-08-115810-907-1533ND
2015-11-095810-900-1232ND
2015-11-095810-901-1053ND
2015-11-095810-902-1132ND
2015-11-095810-903-10351.20 ppb
2015-11-095810-904-1114ND
2015-11-095810-905-1435ND
2015-11-095810-906-1321ND
2015-11-095810-907-1256ND
2016-02-095810-900-1041ND
2016-02-095810-901-1359ND
2016-02-095810-902-1433ND
2016-02-095810-903-11141.10 ppb
2016-02-095810-904-12321.10 ppb
2016-02-095810-905-1005ND
2016-02-095810-906-1523ND
2016-02-095810-907-1458ND
2016-05-105810-901-13051.30 ppb
2016-05-105810-902-11451.000 ppb
2016-05-105810-906-1205ND
2016-05-105810-907-12301.000 ppb
2016-05-115810-900-1213ND
2016-05-115810-903-11451.40 ppb
2016-05-115810-904-1122ND
2016-05-115810-905-12441.20 ppb
2016-08-095810-900-1411ND
2016-08-095810-901-1312ND
2016-08-095810-902-1023ND
2016-08-095810-903-1330ND
2016-08-095810-904-1347ND
2016-08-095810-905-0940ND
2016-08-095810-906-1430ND
2016-08-095810-907-1007ND
2016-11-155810-900-1418ND
2016-11-155810-901-1135ND
2016-11-155810-902-1255ND
2016-11-155810-903-1150ND
2016-11-155810-904-1233ND
2016-11-155810-905-1445ND
2016-11-155810-906-1325ND
2016-11-155810-907-1348ND
2017-02-145810-900-1320ND
2017-02-145810-901-1205ND
2017-02-145810-902-1505ND
2017-02-145810-903-12401.20 ppb
2017-02-145810-904-1301ND
2017-02-145810-905-1345ND
2017-02-145810-906-1535ND
2017-02-145810-907-1421ND
2017-05-095810-901-1120ND
2017-05-095810-902-1240ND
2017-05-095810-903-1140ND
2017-05-095810-904-1209ND
2017-05-095810-905-1415ND
2017-05-095810-906-1300ND
2017-05-095810-907-1330ND
2017-05-115810-900-1529ND
2017-08-175810-900-1307ND
2017-08-175810-901-1138ND
2017-08-175810-902-13391.20 ppb
2017-08-175810-903-1114ND
2017-08-175810-904-1159ND
2017-08-175810-905-12231.000 ppb
2017-08-175810-906-1403ND
2017-08-175810-907-12501.10 ppb
2017-11-145810-900-1330ND
2017-11-145810-901-1213ND
2017-11-145810-902-1357ND
2017-11-145810-903-1152ND
2017-11-145810-904-1230ND
2017-11-145810-905-1004ND
2017-11-145810-906-1414ND
2017-11-145810-907-1309ND
2018-02-135810-901-1131ND
2018-02-135810-902-1321ND
2018-02-135810-906-1259ND
2018-02-135810-907-1425ND
2018-02-145810-900-1713ND
2018-02-145810-903-16291.10 ppb
2018-02-145810-904-1646ND
2018-02-145810-905-1735ND
2018-05-155810-900-1435ND
2018-05-155810-901-16051.70 ppb
2018-05-155810-902-1009ND
2018-05-155810-903-1539ND
2018-05-155810-904-1505ND
2018-05-155810-905-1351ND
2018-05-155810-906-09262.00 ppb
2018-05-155810-907-14151.20 ppb
2018-08-145810-900-0940ND
2018-08-145810-901-1135ND
2018-08-145810-902-1010ND
2018-08-145810-903-1120ND
2018-08-145810-904-1100ND
2018-08-145810-905-0905ND
2018-08-145810-906-1030ND
2018-08-145810-907-0920ND
2018-11-155810-900-1305ND
2018-11-155810-901-1425ND
2018-11-155810-902-1120ND
2018-11-155810-903-1400ND
2018-11-155810-904-1335ND
2018-11-155810-905-1145ND
2018-11-155810-906-1230ND
2018-11-155810-907-1205ND
2019-02-125810-901-1625ND
2019-02-125810-902-1245ND
2019-02-125810-906-1335ND
2019-02-125810-907-1220ND
2019-02-135810-900-1032ND
2019-02-135810-903-0949ND
2019-02-135810-904-1146ND
2019-02-135810-905-1059ND
2019-05-145810-900-1516ND
2019-05-145810-901-14291.10 ppb
2019-05-145810-902-1539ND
2019-05-145810-903-1403ND
2019-05-145810-904-1343ND
2019-05-145810-905-1450ND
2019-05-145810-906-1556ND
2019-05-145810-907-1508ND
2019-08-135810-900-1211ND
2019-08-135810-901-1455ND
2019-08-135810-902-1227ND
2019-08-135810-903-1423ND
2019-08-135810-904-1506ND
2019-08-135810-905-1138ND
2019-08-135810-906-1241ND
2019-08-135810-907-12001.000 ppb
2019-11-145810-900-1352ND
2019-11-145810-901-1127ND
2019-11-145810-902-1248ND
2019-11-145810-903-1104ND
2019-11-145810-904-1030ND
2019-11-145810-905-1423ND
2019-11-145810-906-1233ND
2019-11-145810-907-1336ND