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EWG's Tap Water Database — 2019 UPDATE

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Dichloroacetic acid

Pleasant Hills-crossroads Water Systems

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.

 

80

Samples

0

Samples exceeding legal limit (MCL)

56

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201212.3 ppb889.42 ppb - 17.2 ppb
20136.65 ppb42ND - 13.3 ppb
20145.30 ppb1610ND - 11.5 ppb
20152.80 ppb166ND - 11.0 ppb
20164.97 ppb1610ND - 10.1 ppb
20174.83 ppb20202.50 ppb - 6.90 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.7 ppb

The EWG Health Guideline of 0.7 ppb for dichloroacetic acid was defined by the Environmental Protection Agency as 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
2012-02-22110082711.1 ppb
2012-02-22110082711.1 ppb
2012-04-25111571211.5 ppb
2012-04-25111571211.5 ppb
2012-07-18113561217.2 ppb
2012-07-18113561217.2 ppb
2012-10-1711588939.42 ppb
2012-10-1711588939.42 ppb
2013-02-20118957713.3 ppb
2013-02-20118957713.3 ppb
2013-05-291212504ND
2013-05-291212504ND
2014-02-2112799398.24 ppb
2014-02-2112799398.24 ppb
2014-02-2112799389.14 ppb
2014-02-2112799389.14 ppb
2014-05-14130126011.5 ppb
2014-05-141301259ND
2014-05-14130126011.5 ppb
2014-05-141301259ND
2014-07-161318242ND
2014-07-161318241ND
2014-07-161318242ND
2014-07-161318241ND
2014-10-1513426917.86 ppb
2014-10-1513426905.65 ppb
2014-10-1513426917.86 ppb
2014-10-1513426905.65 ppb
2015-01-211366426ND
2015-01-211366425ND
2015-01-211366426ND
2015-01-211366425ND
2015-04-2213892765.83 ppb
2015-04-2213892755.55 ppb
2015-04-2213892765.83 ppb
2015-04-2213892755.55 ppb
2015-07-15141078311.0 ppb
2015-07-15141078311.0 ppb
2015-07-151410782ND
2015-07-151410782ND
2015-11-041441182ND
2015-11-041441183ND
2015-11-041441183ND
2015-11-041441182ND
2016-01-27146233410.1 ppb
2016-01-2714623336.38 ppb
2016-01-27146233410.1 ppb
2016-01-2714623336.38 ppb
2016-04-271486258ND
2016-04-2714862575.79 ppb
2016-04-271486258ND
2016-04-2714862575.79 ppb
2016-07-201509065ND
2016-07-201509064ND
2016-07-201509065ND
2016-07-201509064ND
2016-10-1915346449.16 ppb
2016-10-1915346458.36 ppb
2016-10-1915346458.36 ppb
2016-10-1915346449.16 ppb
2017-01-25352914900036.90 ppb
2017-01-25352914900036.90 ppb
2017-01-25352914900046.20 ppb
2017-01-25352914900046.20 ppb
2017-04-18353076700032.50 ppb
2017-04-18353076700044.40 ppb
2017-04-18353076700044.40 ppb
2017-04-18353076700032.50 ppb
2017-05-08353116100075.30 ppb
2017-05-08353116100075.30 ppb
2017-05-08353116100083.60 ppb
2017-05-08353116100083.60 ppb
2017-07-11353238170082.90 ppb
2017-07-11353238170074.30 ppb
2017-07-11353238170074.30 ppb
2017-07-11353238170082.90 ppb
2017-10-09353413880016.60 ppb
2017-10-09353413880016.60 ppb
2017-10-09353413880025.60 ppb
2017-10-09353413880025.60 ppb