EWG's Tap Water Database — 2019 UPDATE


Dibromoacetic acid

Anthony Harbor Subdivision

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.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20122.83 ppb42ND - 6.20 ppb
20136.23 ppb443.20 ppb - 8.10 ppb
20147.30 ppb445.50 ppb - 8.30 ppb
20157.80 ppb444.50 ppb - 9.90 ppb
20169.30 ppb446.10 ppb - 11.1 ppb
20176.48 ppb444.80 ppb - 7.90 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2012-06-2812069840025.10 ppb
2012-12-1312126720036.20 ppb
2013-03-2013037910028.10 ppb
2013-06-20Q13026200063.20 ppb
2013-09-26Q13082310018.10 ppb
2013-12-11Q13173390015.50 ppb
2014-03-26Q14099080015.50 ppb
2014-06-26Q14240790048.30 ppb
2014-09-25Q14482550017.10 ppb
2014-12-30Q14610200018.30 ppb
2015-03-24Q15109090019.60 ppb
2015-06-25Q15242200044.50 ppb
2015-09-29Q15383440017.20 ppb
2015-12-10Q15494020019.90 ppb
2016-03-23Q16121900016.10 ppb
2016-06-22Q16254200019.50 ppb
2016-09-22Q163967700111.1 ppb
2016-12-07Q165346200110.5 ppb
2017-03-02Q17089810016.70 ppb
2017-06-21Q17263660017.90 ppb
2017-09-19Q17453370014.80 ppb
2017-12-13Q17659210056.50 ppb