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EWG's Tap Water Database — 2019 UPDATE

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Dibromoacetic acid

City of Rockport

NOTE: City of Rockport purchases water from San Patricio Municipal Water District which is required to test for dibromoacetic acid. Sample information shown below was taken by San Patricio Municipal Water District.

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201219.3 ppb131313.9 ppb - 25.1 ppb
201316.1 ppb161611.1 ppb - 25.5 ppb
20147.34 ppb16162.30 ppb - 12.3 ppb
201510.5 ppb16165.50 ppb - 23.5 ppb
201613.1 ppb16165.30 ppb - 23.0 ppb
201710.7 ppb16165.60 ppb - 17.5 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

NOTE: City of Rockport purchases water from San Patricio Municipal Water District which is required to test for dibromoacetic acid. Sample information shown below was taken by San Patricio Municipal Water District.

Date Lab ID Result
2012-07-18120767400423.0 ppb
2013-06-13AC2207822.4 ppb
2014-06-16AC568792.60 ppb
2015-09-10AD0653910.3 ppb
2016-06-01AD389635.90 ppb
2017-05-24AD854677.70 ppb