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EWG's Tap Water Database — 2021 UPDATE

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Dibromoacetic acid

California Water Service (CWS) - Los Altos Suburban

Dibromoacetic 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)

151

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20144.46 ppb3323ND - 13.0 ppb
20154.85 ppb3230ND - 12.0 ppb
20165.83 ppb3229ND - 12.0 ppb
20172.16 ppb3220ND - 10.00 ppb
20183.21 ppb3227ND - 12.0 ppb
20193.39 ppb3222ND - 9.10 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.04 ppb

The EWG Health Guideline of 0.04 ppb for dibromoacetic acid was defined in a peer-reviewed scientific study by EWG and represents a on-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-135810-900-12075.60 ppb
2014-02-135810-901-1324ND
2014-02-135810-902-11106.30 ppb
2014-02-135810-903-13463.20 ppb
2014-02-135810-904-13082.60 ppb
2014-02-135810-905-12436.50 ppb
2014-02-135810-906-1134ND
2014-02-135810-907-1152ND
2014-04-081610-903-0850ND
2014-05-155810-900-13365.00 ppb
2014-05-155810-901-1435ND
2014-05-155810-902-12318.60 ppb
2014-05-155810-903-145913.0 ppb
2014-05-155810-904-14083.80 ppb
2014-05-155810-905-13508.00 ppb
2014-05-155810-906-12483.60 ppb
2014-05-155810-907-13104.90 ppb
2014-08-075810-900-12286.80 ppb
2014-08-075810-901-1335ND
2014-08-075810-902-11419.60 ppb
2014-08-075810-903-140310.00 ppb
2014-08-075810-904-14298.30 ppb
2014-08-075810-905-12469.50 ppb
2014-08-075810-906-11111.70 ppb
2014-08-075810-907-12049.40 ppb
2014-11-125810-900-1315ND
2014-11-125810-901-1435ND
2014-11-125810-902-10424.70 ppb
2014-11-125810-903-13579.00 ppb
2014-11-125810-904-1332ND
2014-11-125810-905-12524.90 ppb
2014-11-125810-906-1144ND
2014-11-125810-907-12202.10 ppb
2015-02-095810-900-16191.60 ppb
2015-02-095810-901-1333ND
2015-02-095810-902-17051.20 ppb
2015-02-095810-903-13045.20 ppb
2015-02-095810-904-12202.20 ppb
2015-02-095810-905-14551.40 ppb
2015-02-095810-906-17151.20 ppb
2015-02-095810-907-15502.20 ppb
2015-05-145810-900-12463.40 ppb
2015-05-145810-901-141211.0 ppb
2015-05-145810-902-10589.50 ppb
2015-05-145810-903-14351.30 ppb
2015-05-145810-904-15052.00 ppb
2015-05-145810-905-122510.00 ppb
2015-05-145810-906-11241.80 ppb
2015-05-145810-907-11476.50 ppb
2015-08-115810-900-15184.00 ppb
2015-08-115810-901-120011.0 ppb
2015-08-115810-902-135510.00 ppb
2015-08-115810-903-132312.0 ppb
2015-08-115810-904-11086.10 ppb
2015-08-115810-905-160010.00 ppb
2015-08-115810-906-14234.30 ppb
2015-08-115810-907-15337.90 ppb
2015-11-095810-900-12322.10 ppb
2015-11-095810-901-1053ND
2015-11-095810-902-11321.90 ppb
2015-11-095810-903-103511.0 ppb
2015-11-095810-904-11142.90 ppb
2015-11-095810-905-14355.30 ppb
2015-11-095810-906-13212.30 ppb
2015-11-095810-907-12563.90 ppb
2016-02-095810-900-10412.70 ppb
2016-02-095810-901-1359ND
2016-02-095810-902-14334.80 ppb
2016-02-095810-903-111412.0 ppb
2016-02-095810-904-12328.80 ppb
2016-02-095810-905-10054.20 ppb
2016-02-095810-906-15234.90 ppb
2016-02-095810-907-14584.20 ppb
2016-05-105810-901-130511.0 ppb
2016-05-105810-902-114512.0 ppb
2016-05-105810-906-12056.80 ppb
2016-05-105810-907-12309.00 ppb
2016-05-115810-900-12133.00 ppb
2016-05-115810-903-114512.0 ppb
2016-05-115810-904-11225.80 ppb
2016-05-115810-905-12448.50 ppb
2016-08-095810-900-14116.80 ppb
2016-08-095810-901-13126.50 ppb
2016-08-095810-902-10236.40 ppb
2016-08-095810-903-13307.90 ppb
2016-08-095810-904-13475.40 ppb
2016-08-095810-905-09405.50 ppb
2016-08-095810-906-14306.90 ppb
2016-08-095810-907-10076.80 ppb
2016-11-155810-900-14184.20 ppb
2016-11-155810-901-1135ND
2016-11-155810-902-12555.10 ppb
2016-11-155810-903-11503.70 ppb
2016-11-155810-904-12332.20 ppb
2016-11-155810-905-14455.00 ppb
2016-11-155810-906-1325ND
2016-11-155810-907-13484.30 ppb
2017-02-145810-900-13202.30 ppb
2017-02-145810-901-1205ND
2017-02-145810-902-15053.20 ppb
2017-02-145810-903-124010.00 ppb
2017-02-145810-904-13013.00 ppb
2017-02-145810-905-13451.10 ppb
2017-02-145810-906-1535ND
2017-02-145810-907-14214.70 ppb
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
2017-05-095810-906-13001.10 ppb
2017-05-095810-907-13301.10 ppb
2017-05-115810-900-15291.80 ppb
2017-08-175810-900-13076.20 ppb
2017-08-175810-901-1138ND
2017-08-175810-902-13396.10 ppb
2017-08-175810-903-11146.00 ppb
2017-08-175810-904-11594.60 ppb
2017-08-175810-905-12235.20 ppb
2017-08-175810-906-14031.20 ppb
2017-08-175810-907-12507.00 ppb
2017-11-145810-900-13301.10 ppb
2017-11-145810-901-1213ND
2017-11-145810-902-13571.30 ppb
2017-11-145810-903-11521.20 ppb
2017-11-145810-904-1230ND
2017-11-145810-905-1004ND
2017-11-145810-906-1414ND
2017-11-145810-907-13091.000 ppb
2018-02-135810-901-1131ND
2018-02-135810-902-13211.10 ppb
2018-02-135810-906-12592.90 ppb
2018-02-135810-907-14253.30 ppb
2018-02-145810-900-17133.00 ppb
2018-02-145810-903-16296.90 ppb
2018-02-145810-904-16463.40 ppb
2018-02-145810-905-17352.10 ppb
2018-05-155810-900-14352.10 ppb
2018-05-155810-901-160512.0 ppb
2018-05-155810-902-10093.90 ppb
2018-05-155810-903-15391.80 ppb
2018-05-155810-904-15051.80 ppb
2018-05-155810-905-13511.80 ppb
2018-05-155810-906-092610.00 ppb
2018-05-155810-907-14156.00 ppb
2018-08-145810-900-09405.00 ppb
2018-08-145810-901-11354.70 ppb
2018-08-145810-902-10104.30 ppb
2018-08-145810-903-11205.20 ppb
2018-08-145810-904-11002.30 ppb
2018-08-145810-905-09054.70 ppb
2018-08-145810-906-10301.60 ppb
2018-08-145810-907-09205.00 ppb
2018-11-155810-900-1305ND
2018-11-155810-901-1425ND
2018-11-155810-902-1120ND
2018-11-155810-903-14003.00 ppb
2018-11-155810-904-13351.70 ppb
2018-11-155810-905-1145ND
2018-11-155810-906-12302.00 ppb
2018-11-155810-907-12051.10 ppb
2019-02-125810-901-1625ND
2019-02-125810-902-12453.50 ppb
2019-02-125810-906-13354.70 ppb
2019-02-125810-907-12204.30 ppb
2019-02-135810-900-1032ND
2019-02-135810-903-09492.20 ppb
2019-02-135810-904-11462.10 ppb
2019-02-135810-905-10594.00 ppb
2019-05-145810-900-1516ND
2019-05-145810-901-14295.40 ppb
2019-05-145810-902-15394.30 ppb
2019-05-145810-903-14039.10 ppb
2019-05-145810-904-13438.50 ppb
2019-05-145810-905-14506.60 ppb
2019-05-145810-906-15568.50 ppb
2019-05-145810-907-15085.70 ppb
2019-08-135810-900-12111.000 ppb
2019-08-135810-901-1455ND
2019-08-135810-902-12277.30 ppb
2019-08-135810-903-14235.80 ppb
2019-08-135810-904-15066.80 ppb
2019-08-135810-905-11385.10 ppb
2019-08-135810-906-12412.50 ppb
2019-08-135810-907-12008.10 ppb
2019-11-145810-900-1352ND
2019-11-145810-901-1127ND
2019-11-145810-902-1248ND
2019-11-145810-903-11041.70 ppb
2019-11-145810-904-1030ND
2019-11-145810-905-1423ND
2019-11-145810-906-12331.30 ppb
2019-11-145810-907-1336ND