Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dichloroacetic acid

City of Graham

Dichloroacetic 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)

96

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201418.5 ppb16167.00 ppb - 48.0 ppb
201517.3 ppb16166.90 ppb - 28.0 ppb
201611.0 ppb16166.20 ppb - 20.0 ppb
201712.6 ppb16166.70 ppb - 22.0 ppb
201813.5 ppb16167.10 ppb - 18.0 ppb
201912.3 ppb16169.00 ppb - 16.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic 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.a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-1816035-1410.00 ppb
2014-02-1816036-1411.0 ppb
2014-02-1816037-1414.0 ppb
2014-02-1816034-147.00 ppb
2014-05-1417359-1413.0 ppb
2014-05-1417360-1416.0 ppb
2014-05-1417361-1412.0 ppb
2014-05-1417362-1424.0 ppb
2014-08-13173632-1439.0 ppb
2014-08-13173633-1438.0 ppb
2014-08-13173634-1418.0 ppb
2014-08-13173635-1448.0 ppb
2014-11-12174358-1410.00 ppb
2014-11-12174359-1413.0 ppb
2014-11-12174357-147.00 ppb
2014-11-12174356-1416.0 ppb
2015-02-1112.0 ppb
2015-02-1112.0 ppb
2015-02-1114.0 ppb
2015-02-1114.0 ppb
2015-05-1321.0 ppb
2015-05-1323.0 ppb
2015-05-1317.0 ppb
2015-05-1320.0 ppb
2015-08-126.90 ppb
2015-08-1217.0 ppb
2015-08-1221.0 ppb
2015-08-1223.0 ppb
2015-11-1116.0 ppb
2015-11-1122.0 ppb
2015-11-1110.00 ppb
2015-11-1128.0 ppb
2016-02-1734022868.70 ppb
2016-02-1734022879.40 ppb
2016-02-1734022886.80 ppb
2016-02-1734022897.20 ppb
2016-05-11344721411.0 ppb
2016-05-1134472137.20 ppb
2016-05-1134472129.90 ppb
2016-05-11344721113.0 ppb
2016-08-10351843310.00 ppb
2016-08-10351843410.00 ppb
2016-08-1035184357.20 ppb
2016-08-1035184366.20 ppb
2016-11-09358369020.0 ppb
2016-11-09358369116.0 ppb
2016-11-09358369213.0 ppb
2016-11-09358369320.0 ppb
2017-02-08363495515.0 ppb
2017-02-0836349589.60 ppb
2017-02-08363495611.0 ppb
2017-02-08363495710.00 ppb
2017-05-10369228718.0 ppb
2017-05-10369228814.0 ppb
2017-05-10369228911.0 ppb
2017-05-10369229016.0 ppb
2017-08-0937532617.10 ppb
2017-08-09375326015.0 ppb
2017-08-09375325920.0 ppb
2017-08-09375325822.0 ppb
2017-11-08381749910.00 ppb
2017-11-0838175008.30 ppb
2017-11-0838175016.70 ppb
2017-11-0838175028.60 ppb
2018-02-143872957 8.80 ppb
2018-02-143872956 7.30 ppb
2018-02-143872955 7.10 ppb
2018-02-143872954 10.00 ppb
2018-05-093933266 16.0 ppb
2018-05-093933263 17.0 ppb
2018-05-093933264 16.0 ppb
2018-05-093933265 11.0 ppb
2018-08-084016242 14.0 ppb
2018-08-084016240 13.0 ppb
2018-08-084016238 16.0 ppb
2018-08-084016236 18.0 ppb
2018-11-144124031 16.0 ppb
2018-11-144124033 15.0 ppb
2018-11-144124035 14.0 ppb
2018-11-144124037 17.0 ppb
2019-02-134197868 12.0 ppb
2019-02-134197869 11.0 ppb
2019-02-134197870 9.10 ppb
2019-02-134197871 11.0 ppb
2019-05-084287998 15.0 ppb
2019-05-084288001 16.0 ppb
2019-05-084288000 13.0 ppb
2019-05-084287999 15.0 ppb
2019-08-144387880 13.0 ppb
2019-08-144387882 13.0 ppb
2019-08-144387881 10.00 ppb
2019-08-144387879 16.0 ppb
2019-11-064478955 11.0 ppb
2019-11-064478953 9.00 ppb
2019-11-064478951 11.0 ppb
2019-11-064478949 12.0 ppb