Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

City of Friendswood

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
2013N/A00N/A
2014ND160ND
2015ND160ND
20160.338 ppb162ND - 2.80 ppb
20170.325 ppb161ND - 5.20 ppb
20181.12 ppb166ND - 3.30 ppb
20192.24 ppb168ND - 7.50 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
2014-02-20AC43850ND
2014-02-20AC43853ND
2014-02-20AC43848ND
2014-02-20AC43841ND
2014-06-02AC55657ND
2014-06-02AC55638ND
2014-06-02AC55650ND
2014-06-02AC55636ND
2014-08-13AC63569ND
2014-08-13AC63544ND
2014-08-13AC63571ND
2014-08-13AC63548ND
2014-11-24AC72722ND
2014-11-24AC72700ND
2014-11-24AC72717ND
2014-11-24AC72712ND
2015-02-05AC79439ND
2015-02-05AC79438ND
2015-02-05AC79437ND
2015-02-05AC79436ND
2015-05-19AC92515ND
2015-05-19AC92543ND
2015-05-19AC92517ND
2015-05-19AC92544ND
2015-09-17AD07533ND
2015-09-17AD07529ND
2015-09-17AD07531ND
2015-09-17AD07530ND
2015-12-01AD14885ND
2015-12-01AD14886ND
2015-12-01AD14882ND
2015-12-01AD14880ND
2016-02-04AD220922.60 ppb
2016-02-04AD22091ND
2016-02-04AD22093ND
2016-02-04AD22087ND
2016-04-20AD33581ND
2016-04-20AD33585ND
2016-04-20AD33580ND
2016-04-20AD33582ND
2016-09-28AD51694ND
2016-09-28AD516662.80 ppb
2016-09-28AD51684ND
2016-09-28AD51690ND
2016-10-26AD54763ND
2016-10-26AD54766ND
2016-10-26AD54768ND
2016-10-26AD54761ND
2017-01-19AD65688ND
2017-01-19AD65696ND
2017-01-19AD65692ND
2017-01-19AD65687ND
2017-05-03AD82393ND
2017-05-03AD824135.20 ppb
2017-05-03AD82416ND
2017-05-03AD82414ND
2017-07-24AD90338ND
2017-07-24AD90282ND
2017-07-24AD90337ND
2017-07-24AD90339ND
2017-11-07AE03813ND
2017-11-07AE03816ND
2017-11-07AE03819ND
2017-11-07AE03818ND
2018-01-29AE10916ND
2018-01-29AE10915ND
2018-01-29AE10965ND
2018-01-29AE10913ND
2018-04-18AE229762.90 ppb
2018-04-18AE229682.10 ppb
2018-04-18AE22963ND
2018-04-18AE22975ND
2018-07-18AE337623.20 ppb
2018-07-18AE337583.20 ppb
2018-07-18AE337633.30 ppb
2018-07-18AE337353.20 ppb
2018-11-19AE46437ND
2018-11-19AE46434ND
2018-11-19AE46435ND
2018-11-19AE46436ND
2019-02-04AE52652ND
2019-02-04AE52653ND
2019-02-04AE52651ND
2019-02-04AE526502.50 ppb
2019-04-22AE63168ND
2019-04-22AE631627.50 ppb
2019-04-22AE63161ND
2019-04-22AE63129ND
2019-07-15AE743292.10 ppb
2019-07-15AE743266.70 ppb
2019-07-15AE74348ND
2019-07-15AE743452.90 ppb
2019-10-02AE854676.50 ppb
2019-10-02AE854782.70 ppb
2019-10-02AE85480ND
2019-10-02AE854614.90 ppb