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EWG's Tap Water Database — 2019 UPDATE

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Dichloroacetic acid

Jefferson County PWSD 10

NOTE: Jefferson County PWSD 10 purchases water from Missouri American St. Louis County & St. Charles County which is required to test for dichloroacetic acid. Sample information shown below was taken by Missouri American St. Louis County & St. Charles County.

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.

 

442

Samples

0

Samples exceeding legal limit (MCL)

442

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201233.7 ppb6616.5 ppb - 58.7 ppb
201326.3 ppb8813.9 ppb - 42.4 ppb
201419.1 ppb887.94 ppb - 28.4 ppb
201523.1 ppb8811.6 ppb - 34.5 ppb
201625.2 ppb8813.0 ppb - 45.8 ppb
201712.5 ppb87ND - 27.6 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

NOTE: Jefferson County PWSD 10 purchases water from Missouri American St. Louis County & St. Charles County which is required to test for dichloroacetic acid. Sample information shown below was taken by Missouri American St. Louis County & St. Charles County.

Date Lab ID Result
2012-01-051558540121.0 ppb
2012-01-051558550119.2 ppb
2012-01-051558560112.8 ppb
2012-01-05155871015.70 ppb
2012-01-051559260122.1 ppb
2012-01-05155952018.50 ppb
2012-01-051582410110.8 ppb
2012-01-051582520114.3 ppb
2012-01-051582570110.6 ppb
2012-01-051582580113.5 ppb
2012-01-051582590113.8 ppb
2012-01-051582600119.1 ppb
2012-01-05158261019.30 ppb
2012-01-051582620112.7 ppb
2012-01-05158276016.70 ppb
2012-01-051582870112.1 ppb
2012-01-051616000112.3 ppb
2012-01-051616010112.9 ppb
2012-01-051616020113.8 ppb
2012-01-051616190112.6 ppb
2012-01-051616200111.2 ppb
2012-01-051616210111.3 ppb
2012-01-051616220111.7 ppb
2012-05-081611470119.5 ppb
2012-05-081611490120.2 ppb
2012-05-081611550120.8 ppb
2012-05-08164202019.20 ppb
2012-05-081712980121.6 ppb
2012-05-081713000123.2 ppb
2012-05-081713020117.8 ppb
2012-05-081713040115.7 ppb
2012-05-081713060113.1 ppb
2012-05-081713080110.00 ppb
2012-05-081713210112.9 ppb
2012-05-081713240113.1 ppb
2012-05-08171330019.80 ppb
2012-05-081713320111.0 ppb
2012-05-081713340113.2 ppb
2012-05-081713360113.4 ppb
2012-05-081713380113.0 ppb
2012-05-081717550112.0 ppb
2012-05-081740620110.00 ppb
2012-05-08174080018.30 ppb
2012-05-081852760115.6 ppb
2012-08-01182877017.70 ppb
2012-08-01182878017.10 ppb
2012-08-01182879019.40 ppb
2012-08-01182881019.50 ppb
2012-08-01182882015.90 ppb
2012-08-011828830111.5 ppb
2012-08-011828860121.9 ppb
2012-08-011828870122.2 ppb
2012-08-011828880120.2 ppb
2012-08-011828890119.4 ppb
2012-08-011828900119.5 ppb
2012-08-011828970117.8 ppb
2012-08-011828980122.9 ppb
2012-08-011828990121.6 ppb
2012-08-011829000116.7 ppb
2012-08-01182903018.60 ppb
2012-08-01182904017.00 ppb
2012-08-01182905018.40 ppb
2012-08-01182906015.60 ppb
2012-08-011937680115.2 ppb
2012-08-07196644018.10 ppb
2012-11-052015640115.6 ppb
2012-11-052015650112.4 ppb
2012-11-052015660111.2 ppb
2012-11-052015670113.1 ppb
2012-11-05201570018.60 ppb
2012-11-052015710112.9 ppb
2012-11-05201572017.70 ppb
2012-11-05201573018.60 ppb
2012-11-052015740110.6 ppb
2012-11-05201577018.00 ppb
2012-11-052015780119.8 ppb
2012-11-052015790117.2 ppb
2012-11-05201580019.60 ppb
2012-11-052015850115.5 ppb
2012-11-05201586019.70 ppb
2012-11-05201587014.70 ppb
2012-11-052015880116.5 ppb
2012-11-052015890113.6 ppb
2012-11-052015900112.0 ppb
2012-11-05201597019.60 ppb
2012-11-052016000115.1 ppb
2013-02-112101580115.0 ppb
2013-02-112101600112.3 ppb
2013-02-112101610113.5 ppb
2013-02-112101620116.5 ppb
2013-02-112101670110.2 ppb
2013-02-112101680118.4 ppb
2013-02-112101690112.5 ppb
2013-02-112101710113.6 ppb
2013-02-112101720110.5 ppb
2013-02-112101770111.1 ppb
2013-02-112101780119.7 ppb
2013-02-112101790119.5 ppb
2013-02-112101800125.1 ppb
2013-02-112101900113.7 ppb
2013-02-112101910111.5 ppb
2013-02-112101920110.3 ppb
2013-02-112101940110.00 ppb
2013-02-112101960110.8 ppb
2013-02-112101970112.2 ppb
2013-02-11210206016.00 ppb
2013-02-112102080111.9 ppb
2013-05-222179680118.0 ppb
2013-05-222179690120.3 ppb
2013-05-222179720116.6 ppb
2013-05-222179730119.5 ppb
2013-05-222179780117.9 ppb
2013-05-222179790115.1 ppb
2013-05-222179800115.8 ppb
2013-05-222179820115.8 ppb
2013-05-222179830118.3 ppb
2013-05-222179880114.2 ppb
2013-05-222179890111.8 ppb
2013-05-222179900111.4 ppb
2013-05-222179910113.7 ppb
2013-05-222180010110.7 ppb
2013-05-222180020123.5 ppb
2013-05-222180030120.3 ppb
2013-05-222180050120.6 ppb
2013-05-222180070122.7 ppb
2013-05-222180080117.1 ppb
2013-05-222180180110.2 ppb
2013-05-222180200112.1 ppb
2013-08-072317030114.8 ppb
2013-08-072317040113.8 ppb
2013-08-072317060113.3 ppb
2013-08-072317070114.5 ppb
2013-08-072317120111.3 ppb
2013-08-072317130113.0 ppb
2013-08-072317140110.4 ppb
2013-08-072317160112.9 ppb
2013-08-072317170112.1 ppb
2013-08-07231722019.70 ppb
2013-08-07231723019.20 ppb
2013-08-072317240111.9 ppb
2013-08-072317250113.8 ppb
2013-08-07231735019.70 ppb
2013-08-07231736018.90 ppb
2013-08-07231737017.30 ppb
2013-08-072317390113.0 ppb
2013-08-072317410110.8 ppb
2013-08-07231742019.30 ppb
2013-08-07231751019.70 ppb
2013-08-07231753018.30 ppb
2013-11-06239309019.20 ppb
2013-11-06239310018.20 ppb
2013-11-06239313019.40 ppb
2013-11-06239314018.90 ppb
2013-11-06239319017.20 ppb
2013-11-06239320018.50 ppb
2013-11-06239321017.20 ppb
2013-11-06239323017.60 ppb
2013-11-06239324015.50 ppb
2013-11-06239329016.70 ppb
2013-11-06239330014.80 ppb
2013-11-06239331014.60 ppb
2013-11-06239332014.90 ppb
2013-11-06239342013.80 ppb
2013-11-06239343016.40 ppb
2013-11-06239344016.70 ppb
2013-11-06239346018.10 ppb
2013-11-06239348018.00 ppb
2013-11-06239349015.50 ppb
2013-11-06239358014.90 ppb
2013-11-06239360015.00 ppb
2014-02-19246906017.30 ppb
2014-02-19246907017.40 ppb
2014-02-19246909018.80 ppb
2014-02-19246910017.50 ppb
2014-02-19246914015.50 ppb
2014-02-19246915014.60 ppb
2014-02-19246916014.70 ppb
2014-02-19246917019.90 ppb
2014-02-192469210110.5 ppb
2014-02-192469220114.0 ppb
2014-02-192469230113.9 ppb
2014-02-192469310112.6 ppb
2014-02-192469320112.3 ppb
2014-02-192469330112.2 ppb
2014-02-192469340113.7 ppb
2014-02-192469350110.3 ppb
2014-05-142559160118.8 ppb
2014-05-142559170119.9 ppb
2014-05-142559190114.2 ppb
2014-05-142559200119.5 ppb
2014-05-142559240116.1 ppb
2014-05-142559250113.5 ppb
2014-05-142559260115.2 ppb
2014-05-142559270111.2 ppb
2014-05-14255931019.70 ppb
2014-05-142559320110.7 ppb
2014-05-142559330110.00 ppb
2014-05-14255941019.30 ppb
2014-05-142559420110.00 ppb
2014-05-142559430114.5 ppb
2014-05-142559440113.0 ppb
2014-05-142559450110.5 ppb
2014-08-192654730120.7 ppb
2014-08-192654740116.2 ppb
2014-08-192654760115.9 ppb
2014-08-192654770117.5 ppb
2014-08-192654810114.8 ppb
2014-08-192654820113.1 ppb
2014-08-192654830113.0 ppb
2014-08-192654840113.3 ppb
2014-08-192654880114.7 ppb
2014-08-192654890114.7 ppb
2014-08-192654900114.7 ppb
2014-08-19265498017.20 ppb
2014-08-19265499019.40 ppb
2014-08-192655000110.2 ppb
2014-08-192655010116.0 ppb
2014-08-19265502019.90 ppb
2014-08-19AC3093420.8 ppb
2014-08-19AC3093520.4 ppb
2014-08-19AC3093619.0 ppb
2014-08-19AC3093720.8 ppb
2014-08-19AC3093821.0 ppb
2014-08-19AC3093920.6 ppb
2014-08-19AC3094023.0 ppb
2014-08-19AC3094120.4 ppb
2014-08-19AC3094219.6 ppb
2014-08-19AC3094314.1 ppb
2014-08-19AC3094416.2 ppb
2014-08-19AC3094518.1 ppb
2014-08-19AC3094613.3 ppb
2014-08-19AC3094717.9 ppb
2014-08-19AC3094814.6 ppb
2014-08-19AC3094913.7 ppb
2014-11-062737980112.3 ppb
2014-11-062737990112.5 ppb
2014-11-062738010114.4 ppb
2014-11-062738020114.4 ppb
2014-11-062738060111.5 ppb
2014-11-06273807018.80 ppb
2014-11-06273808018.00 ppb
2014-11-06273809017.20 ppb
2014-11-06273813017.70 ppb
2014-11-062738140113.7 ppb
2014-11-062738150118.0 ppb
2014-11-062738230111.0 ppb
2014-11-06273824015.40 ppb
2014-11-06273825018.50 ppb
2014-11-062738260111.3 ppb
2014-11-06273827017.80 ppb
2015-02-122815300110.8 ppb
2015-02-12281532019.80 ppb
2015-02-12281537019.10 ppb
2015-02-12281539019.80 ppb
2015-02-12281540019.60 ppb
2015-02-122815450114.8 ppb
2015-02-122815460123.4 ppb
2015-02-122815540112.4 ppb
2015-02-122815550114.9 ppb
2015-02-122815560114.7 ppb
2015-02-122815570113.8 ppb
2015-02-12281529019.90 ppb
2015-02-12281533019.50 ppb
2015-02-12281538017.80 ppb
2015-02-122815440115.3 ppb
2015-02-122815580114.2 ppb
2015-05-122888420117.2 ppb
2015-05-122888450116.6 ppb
2015-05-122888500111.7 ppb
2015-05-122888510117.0 ppb
2015-05-12288859019.00 ppb
2015-05-12288870019.30 ppb
2015-05-12288871019.10 ppb
2015-05-122888720113.2 ppb
2015-05-122888410120.6 ppb
2015-05-122888440120.7 ppb
2015-05-122888520113.5 ppb
2015-05-12288853018.40 ppb
2015-05-12288858017.20 ppb
2015-05-122888600111.1 ppb
2015-05-12288869019.50 ppb
2015-05-12288873019.20 ppb
2015-08-252980100124.7 ppb
2015-08-252980210127.9 ppb
2015-08-252980370113.9 ppb
2015-08-252980390118.0 ppb
2015-08-252980410116.7 ppb
2015-08-252980090138.1 ppb
2015-08-252980120124.9 ppb
2015-08-252980130131.1 ppb
2015-08-252980180130.4 ppb
2015-08-252980190118.0 ppb
2015-08-252980200126.8 ppb
2015-08-252980260112.0 ppb
2015-08-252980270113.5 ppb
2015-08-252980280116.9 ppb
2015-08-252980380115.0 ppb
2015-08-252980400121.0 ppb
2015-11-123064970111.8 ppb
2015-11-123064830118.0 ppb
2015-11-123064840116.8 ppb
2015-11-123064850119.3 ppb
2015-11-123064940110.7 ppb
2015-11-123064950111.1 ppb
2015-11-12306496019.90 ppb
2015-11-12306498018.30 ppb
2015-11-12306476018.20 ppb
2015-11-12306477018.80 ppb
2015-11-12306478016.80 ppb
2015-11-123064660112.2 ppb
2015-11-123064670112.5 ppb
2015-11-123064690112.3 ppb
2015-11-123064700113.7 ppb
2015-11-12306475019.80 ppb
2016-02-163126370110.6 ppb
2016-02-16312657017.70 ppb
2016-02-16312625016.00 ppb
2016-02-16312626016.60 ppb
2016-02-16312628016.10 ppb
2016-02-16312634015.40 ppb
2016-02-163126420120.6 ppb
2016-02-16312653018.90 ppb
2016-02-163126540110.1 ppb
2016-02-16312655018.60 ppb
2016-02-163126560110.1 ppb
2016-02-16312629017.70 ppb
2016-02-16312635014.00 ppb
2016-02-16312636015.80 ppb
2016-02-253158060120.6 ppb
2016-02-253158070121.6 ppb
2016-05-173196370141.3 ppb
2016-05-173196420144.7 ppb
2016-05-173196430131.9 ppb
2016-05-173196520116.5 ppb
2016-05-173196620110.9 ppb
2016-05-173196650114.1 ppb
2016-05-173196330135.2 ppb
2016-05-173196340143.6 ppb
2016-05-173196360128.9 ppb
2016-05-173196440130.9 ppb
2016-05-173196450119.3 ppb
2016-05-173196500113.0 ppb
2016-05-173196510115.1 ppb
2016-05-173196610111.0 ppb
2016-05-173196630112.7 ppb
2016-05-173196640113.5 ppb
2016-08-163301680125.8 ppb
2016-08-163301780120.1 ppb
2016-08-163301840117.4 ppb
2016-08-163301960116.1 ppb
2016-08-163301970119.0 ppb
2016-08-163301670143.0 ppb
2016-08-163301700128.9 ppb
2016-08-163301710127.5 ppb
2016-08-163301760127.8 ppb
2016-08-163301770119.8 ppb
2016-08-163301790118.7 ppb
2016-08-163301850122.0 ppb
2016-08-163301860117.9 ppb
2016-08-163301950116.3 ppb
2016-08-163301980121.6 ppb
2016-08-163301990119.7 ppb
2016-11-103370420112.3 ppb
2016-11-103370430110.00 ppb
2016-11-10337048018.10 ppb
2016-11-103370500111.9 ppb
2016-11-103370590110.8 ppb
2016-11-103370610123.0 ppb
2016-11-103370620113.0 ppb
2016-11-103370310111.9 ppb
2016-11-103370320116.8 ppb
2016-11-103370400114.1 ppb
2016-11-103370490110.6 ppb
2016-11-10337060018.60 ppb
2016-11-10337063018.40 ppb
2016-11-103370340115.3 ppb
2016-11-103370350112.1 ppb
2016-11-10337041019.70 ppb
2017-02-023456610114.4 ppb
2017-02-023456620111.6 ppb
2017-02-023456640111.1 ppb
2017-02-02345672018.60 ppb
2017-02-023456730110.2 ppb
2017-02-023456780129.2 ppb
2017-02-023456910117.0 ppb
2017-02-023456920115.2 ppb
2017-02-023456930122.6 ppb
2017-02-023456650110.6 ppb
2017-02-023456700112.3 ppb
2017-02-02345671016.90 ppb
2017-02-023456790122.4 ppb
2017-02-023456890122.9 ppb
2017-02-023456900127.3 ppb
2017-02-163495430110.4 ppb
2017-05-253540280120.5 ppb
2017-05-253540330123.2 ppb
2017-05-253540340121.9 ppb
2017-05-253540360116.6 ppb
2017-05-253540410118.8 ppb
2017-05-253540530116.4 ppb
2017-05-253540540116.1 ppb
2017-05-253540580119.3 ppb
2017-05-253540240119.5 ppb
2017-05-253540250124.7 ppb
2017-05-253540270122.3 ppb
2017-05-253540350122.4 ppb
2017-05-253540420116.4 ppb
2017-05-253540430119.5 ppb
2017-05-253540550123.1 ppb
2017-05-253540560121.2 ppb
2017-08-173657220117.5 ppb
2017-08-173657300115.8 ppb
2017-08-173657320114.9 ppb
2017-08-173657390115.2 ppb
2017-08-17365747019.10 ppb
2017-08-173657490115.6 ppb
2017-08-173657500114.8 ppb
2017-08-173657510111.9 ppb
2017-08-173657230115.4 ppb
2017-08-173657250115.9 ppb
2017-08-173657260116.3 ppb
2017-08-173657310112.2 ppb
2017-08-173657330111.8 ppb
2017-08-173657370112.4 ppb
2017-08-173657380115.4 ppb
2017-08-17365748019.50 ppb
2017-11-09376605019.10 ppb
2017-11-093766060110.3 ppb
2017-11-093766320116.6 ppb
2017-11-093766080110.6 ppb
2017-11-093766090110.6 ppb
2017-11-09376614018.90 ppb
2017-11-093766160111.2 ppb
2017-11-093766210114.4 ppb
2017-11-093766220114.7 ppb
2017-11-093766130110.00 ppb
2017-11-09376615019.50 ppb
2017-11-093766200115.1 ppb
2017-11-09376630019.10 ppb
2017-11-09376631019.70 ppb
2017-11-093766330115.1 ppb
2017-11-09376634018.60 ppb