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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

East Orange County Water District - Wz

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.

 

169

Samples

0

Samples exceeding legal limit (MCL)

154

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20147.31 ppb2423ND - 11.8 ppb
20154.80 ppb3228ND - 8.71 ppb
20162.20 ppb3229ND - 9.29 ppb
20174.45 ppb2524ND - 7.24 ppb
20183.96 ppb3227ND - 12.1 ppb
20192.68 ppb2423ND - 4.45 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
2014-03-049469-803-13256.63 ppb
2014-03-049469-804-11007.32 ppb
2014-03-049469-805-11156.66 ppb
2014-03-049469-806-09076.74 ppb
2014-03-049469-807-13546.58 ppb
2014-03-049469-808-11426.97 ppb
2014-03-049469-809-13406.35 ppb
2014-03-049469-810-11157.09 ppb
2014-09-029469-803-11321.90 ppb
2014-09-029469-804-095310.5 ppb
2014-09-029469-805-125710.3 ppb
2014-09-029469-806-122011.3 ppb
2014-09-029469-807-135011.8 ppb
2014-09-029469-808-13309.93 ppb
2014-09-029469-809-120710.1 ppb
2014-09-029469-810-124511.6 ppb
2014-12-029469-803-0902ND
2014-12-029469-804-14055.77 ppb
2014-12-029469-805-13186.44 ppb
2014-12-029469-806-09526.27 ppb
2014-12-029469-807-14425.83 ppb
2014-12-029469-808-14267.58 ppb
2014-12-029469-809-09295.62 ppb
2014-12-029469-810-12566.10 ppb
2015-03-039469-803-0910ND
2015-03-039469-804-11085.97 ppb
2015-03-039469-805-12068.71 ppb
2015-03-039469-806-10456.84 ppb
2015-03-039469-807-13345.86 ppb
2015-03-039469-808-12546.49 ppb
2015-03-039469-809-10125.98 ppb
2015-03-039469-810-12116.26 ppb
2015-06-029588-803-1340ND
2015-06-029588-804-12416.60 ppb
2015-06-029588-805-14457.10 ppb
2015-06-029588-806-14156.60 ppb
2015-06-029588-807-15504.80 ppb
2015-06-029588-808-15156.40 ppb
2015-06-029588-809-14067.50 ppb
2015-06-029588-810-14456.60 ppb
2015-09-019469-803-1055ND
2015-09-019469-804-1148ND
2015-09-019469-805-12106.15 ppb
2015-09-019469-806-11305.77 ppb
2015-09-019469-807-13345.94 ppb
2015-09-019469-808-09255.70 ppb
2015-09-019469-809-11155.46 ppb
2015-09-019469-810-12155.14 ppb
2015-12-019469-804-15353.01 ppb
2015-12-019469-805-13184.11 ppb
2015-12-019469-806-12403.61 ppb
2015-12-019469-807-15003.53 ppb
2015-12-019469-808-09174.27 ppb
2015-12-019469-809-12253.14 ppb
2015-12-019469-810-13283.28 ppb
2015-12-079469-803-14452.70 ppb
2016-03-019469-803-10019.29 ppb
2016-03-019469-804-11551.88 ppb
2016-03-019469-805-12251.90 ppb
2016-03-019469-806-13551.17 ppb
2016-03-019469-807-0855ND
2016-03-019469-808-12452.70 ppb
2016-03-019469-809-11301.18 ppb
2016-03-019469-810-12122.96 ppb
2016-06-079469-803-1057ND
2016-06-079469-804-13072.50 ppb
2016-06-079469-805-13322.90 ppb
2016-06-079469-806-12352.37 ppb
2016-06-079469-807-08262.00 ppb
2016-06-079469-808-08521.97 ppb
2016-06-079469-809-12171.96 ppb
2016-06-079469-810-13432.00 ppb
2016-09-069469-803-10003.41 ppb
2016-09-069469-804-12372.55 ppb
2016-09-069469-805-11322.29 ppb
2016-09-069469-806-10502.15 ppb
2016-09-069469-807-12161.77 ppb
2016-09-069469-808-12002.30 ppb
2016-09-069469-809-10342.75 ppb
2016-09-069469-810-11351.99 ppb
2016-12-069469-803-0944ND
2016-12-069469-804-09022.34 ppb
2016-12-069469-805-11152.74 ppb
2016-12-069469-806-12151.80 ppb
2016-12-069469-807-13471.54 ppb
2016-12-069469-808-12351.79 ppb
2016-12-069469-809-09202.09 ppb
2016-12-069469-810-11202.04 ppb
2017-03-079469-803-1116ND
2017-03-079469-804-11447.18 ppb
2017-03-079469-805-14487.24 ppb
2017-03-079469-806-09186.01 ppb
2017-03-079469-807-15025.92 ppb
2017-03-079469-808-12545.89 ppb
2017-03-079469-809-14287.01 ppb
2017-03-079469-810-12185.90 ppb
2017-06-069469-803-13116.85 ppb
2017-06-069469-804-10505.88 ppb
2017-06-069469-805-13026.12 ppb
2017-06-069469-805-14026.12 ppb
2017-06-069469-806-11123.80 ppb
2017-06-069469-807-10304.70 ppb
2017-06-069469-808-09404.56 ppb
2017-06-069469-809-11375.64 ppb
2017-06-069469-810-14104.12 ppb
2017-12-059469-803-12572.61 ppb
2017-12-059469-804-08441.59 ppb
2017-12-059469-805-11242.04 ppb
2017-12-059469-806-14362.14 ppb
2017-12-059469-807-09592.52 ppb
2017-12-059469-808-10142.50 ppb
2017-12-059469-809-14571.88 ppb
2017-12-059469-810-11182.92 ppb
2018-03-069469-803-0851ND
2018-03-069469-804-10011.82 ppb
2018-03-069469-805-10302.60 ppb
2018-03-069469-806-12291.25 ppb
2018-03-069469-807-11191.64 ppb
2018-03-069469-808-13122.41 ppb
2018-03-069469-809-11522.14 ppb
2018-03-069469-810-10492.24 ppb
2018-06-059469-803-1526ND
2018-06-059469-804-14562.86 ppb
2018-06-059469-805-10302.77 ppb
2018-06-059469-806-13303.24 ppb
2018-06-059469-807-09152.22 ppb
2018-06-059469-808-11561.74 ppb
2018-06-059469-809-14002.52 ppb
2018-06-059469-810-12102.37 ppb
2018-09-049469-803-13154.72 ppb
2018-09-049469-804-105110.1 ppb
2018-09-049469-805-095512.1 ppb
2018-09-049469-806-11149.75 ppb
2018-09-049469-807-08529.59 ppb
2018-09-049469-808-09148.94 ppb
2018-09-049469-809-113212.0 ppb
2018-09-049469-810-10078.85 ppb
2018-12-049469-803-1134ND
2018-12-049469-804-11053.74 ppb
2018-12-049469-805-1027ND
2018-12-049469-806-10383.92 ppb
2018-12-049469-807-1414ND
2018-12-049469-808-14263.71 ppb
2018-12-049469-809-11583.72 ppb
2018-12-049469-810-12153.63 ppb
2019-03-059469-803-0948ND
2019-03-059469-804-11053.28 ppb
2019-03-059469-805-11513.14 ppb
2019-03-059469-806-14262.67 ppb
2019-03-059469-807-14052.63 ppb
2019-03-059469-808-13432.30 ppb
2019-03-059469-809-12513.21 ppb
2019-03-059469-810-15242.79 ppb
2019-06-049469-803-12583.23 ppb
2019-06-049469-804-10532.48 ppb
2019-06-049469-805-09282.40 ppb
2019-06-049469-806-11112.74 ppb
2019-06-049469-807-14321.19 ppb
2019-06-049469-808-10031.62 ppb
2019-06-049469-809-11312.54 ppb
2019-06-049469-810-09431.65 ppb
2019-09-039469-803-10184.45 ppb
2019-09-039469-804-11593.31 ppb
2019-09-039469-805-09303.10 ppb
2019-09-039469-806-11112.82 ppb
2019-09-039469-807-12242.92 ppb
2019-09-039469-808-13083.08 ppb
2019-09-039469-809-11323.52 ppb
2019-09-039469-810-12493.29 ppb