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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

City of Pampa

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

 

88

Samples

0

Samples exceeding legal limit (MCL)

60

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.19 ppb1613ND - 5.50 ppb
20150.831 ppb164ND - 4.30 ppb
20165.08 ppb1615ND - 22.9 ppb
20171.04 ppb165ND - 11.1 ppb
20183.45 ppb16161.90 ppb - 5.70 ppb
20192.64 ppb87ND - 4.30 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
2014-03-25Q1409421004ND
2014-03-25Q1409421003ND
2014-03-25Q14094210021.000 ppb
2014-03-25Q14094210011.000 ppb
2014-06-25Q14235710181.40 ppb
2014-06-25Q1423571017ND
2014-06-25Q14235710161.000 ppb
2014-06-25Q14235710151.10 ppb
2014-09-24Q14480380025.00 ppb
2014-09-24Q14480380015.50 ppb
2014-09-24Q14480380034.80 ppb
2014-09-24Q14480380044.60 ppb
2014-10-21Q14534470041.90 ppb
2014-10-21Q14534470032.10 ppb
2014-10-21Q14534470023.00 ppb
2014-10-21Q14534470012.60 ppb
2015-03-17Q1510074004ND
2015-03-17Q1510074003ND
2015-03-17Q1510074002ND
2015-03-17Q1510074001ND
2015-05-26Q1519314003ND
2015-05-26Q1519314001ND
2015-05-26Q1519314002ND
2015-05-26Q1519314004ND
2015-07-28Q15293190042.40 ppb
2015-07-28Q1529319003ND
2015-07-28Q15293190024.30 ppb
2015-07-28Q15293190012.40 ppb
2015-12-01Q1547330009ND
2015-12-01Q1547330008ND
2015-12-01Q1547330007ND
2015-12-01Q15473300064.20 ppb
2016-03-09Q16102380041.70 ppb
2016-03-09Q16102380011.90 ppb
2016-03-09Q16102380022.40 ppb
2016-03-09Q16102380031.70 ppb
2016-06-14Q1624362004ND
2016-06-14Q16243620033.90 ppb
2016-06-14Q16243620024.50 ppb
2016-06-14Q16243620014.10 ppb
2016-07-26Q16311360013.50 ppb
2016-07-26Q16311360041.70 ppb
2016-07-26Q16311360032.80 ppb
2016-07-26Q16311360025.10 ppb
2016-11-09Q164878000422.9 ppb
2016-11-09Q16487800037.10 ppb
2016-11-09Q16487800027.70 ppb
2016-11-09Q164878000110.2 ppb
2017-01-31Q1704451014ND
2017-01-31Q1704451013ND
2017-01-31Q1704451012ND
2017-01-31Q17044510111.000 ppb
2017-04-26Q17169460081.20 ppb
2017-04-26Q17169460071.10 ppb
2017-04-26Q1716946009ND
2017-04-26Q1716946010ND
2017-08-24Q1738386003ND
2017-08-24Q173838600511.1 ppb
2017-08-24Q1738386002ND
2017-08-24Q1738386004ND
2017-10-17Q17534330042.30 ppb
2017-10-17Q1753433002ND
2017-10-17Q1753433003ND
2017-10-17Q1753433001ND
2018-02-05Q18043200063.00 ppb
2018-02-05Q18043200054.00 ppb
2018-02-05Q18043200114.00 ppb
2018-02-05Q18043200143.00 ppb
2018-04-18Q18161360093.40 ppb
2018-04-18Q18161360033.60 ppb
2018-04-18Q18161360084.10 ppb
2018-04-18Q18161360023.90 ppb
2018-07-16Q18279800021.90 ppb
2018-07-16Q18279800043.80 ppb
2018-07-16Q18279800012.80 ppb
2018-07-16Q18279800033.40 ppb
2018-10-25Q18428970042.20 ppb
2018-10-25Q18428970015.70 ppb
2018-10-25Q18428970023.80 ppb
2018-10-25Q18428970032.60 ppb
2019-02-13Q19068600122.80 ppb
2019-02-13Q19068600112.40 ppb
2019-05-15Q19254420123.30 ppb
2019-05-15Q19254420112.70 ppb
2019-08-13Q19543680023.20 ppb
2019-08-13Q1954368001ND
2019-11-04Q19751860014.30 ppb
2019-11-04Q19751860022.40 ppb