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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic 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 trichloroacetic acid. Sample information shown below was taken by Missouri American St. Louis County & St. Charles County.

Trichloroacetic 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)

320

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20124.74 ppb662.40 ppb - 8.41 ppb
20132.95 ppb881.67 ppb - 5.03 ppb
20143.43 ppb881.07 ppb - 5.36 ppb
20153.06 ppb881.28 ppb - 5.49 ppb
20162.32 ppb880.790 ppb - 4.52 ppb
20171.32 ppb85ND - 3.61 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for trichloroacetic 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 trichloroacetic acid. Sample information shown below was taken by Missouri American St. Louis County & St. Charles County.

Date Lab ID Result
2012-01-05155854016.80 ppb
2012-01-05155855017.80 ppb
2012-01-05155856014.00 ppb
2012-01-0515587101ND
2012-01-05155926016.50 ppb
2012-01-05155952011.90 ppb
2012-01-05158241011.40 ppb
2012-01-05158252012.50 ppb
2012-01-05158257012.70 ppb
2012-01-05158258012.80 ppb
2012-01-05158259014.70 ppb
2012-01-05158260013.40 ppb
2012-01-05158261011.80 ppb
2012-01-05158262013.80 ppb
2012-01-05158276011.20 ppb
2012-01-05158287015.90 ppb
2012-01-05161600012.50 ppb
2012-01-05161601011.30 ppb
2012-01-05161602012.30 ppb
2012-01-05161619012.70 ppb
2012-01-05161620012.90 ppb
2012-01-05161621012.40 ppb
2012-01-05161622012.50 ppb
2012-05-08161147012.30 ppb
2012-05-08161149012.60 ppb
2012-05-08161155012.20 ppb
2012-05-08164202011.20 ppb
2012-05-08171298012.30 ppb
2012-05-08171300012.90 ppb
2012-05-08171302012.50 ppb
2012-05-08171304012.70 ppb
2012-05-08171306011.70 ppb
2012-05-0817130801ND
2012-05-08171321011.000 ppb
2012-05-08171324011.10 ppb
2012-05-0817133001ND
2012-05-0817133201ND
2012-05-0817133401ND
2012-05-0817133601ND
2012-05-0817133801ND
2012-05-08171755011.000 ppb
2012-05-0817406201ND
2012-05-0817408001ND
2012-05-08185276012.70 ppb
2012-08-0118287701ND
2012-08-0118287801ND
2012-08-0118287901ND
2012-08-0118288101ND
2012-08-0118288201ND
2012-08-0118288301ND
2012-08-01182886012.80 ppb
2012-08-01182887012.90 ppb
2012-08-01182888012.80 ppb
2012-08-01182889012.80 ppb
2012-08-01182890012.10 ppb
2012-08-01182897012.50 ppb
2012-08-01182898015.10 ppb
2012-08-01182899013.90 ppb
2012-08-01182900011.80 ppb
2012-08-0118290301ND
2012-08-0118290401ND
2012-08-0118290501ND
2012-08-0118290601ND
2012-08-01193768013.20 ppb
2012-08-0719664401ND
2012-11-05201564012.40 ppb
2012-11-05201565012.00 ppb
2012-11-05201566011.70 ppb
2012-11-05201567012.50 ppb
2012-11-05201570011.80 ppb
2012-11-05201571012.40 ppb
2012-11-05201572011.50 ppb
2012-11-05201573011.40 ppb
2012-11-05201574012.00 ppb
2012-11-05201577011.40 ppb
2012-11-05201578014.60 ppb
2012-11-05201579014.60 ppb
2012-11-05201580013.00 ppb
2012-11-05201585014.40 ppb
2012-11-05201586011.70 ppb
2012-11-0520158701ND
2012-11-05201588012.40 ppb
2012-11-05201589011.90 ppb
2012-11-05201590012.00 ppb
2012-11-05201597011.50 ppb
2012-11-05201600013.70 ppb
2013-02-11210158012.40 ppb
2013-02-11210160012.40 ppb
2013-02-11210161012.10 ppb
2013-02-11210162013.20 ppb
2013-02-11210167012.20 ppb
2013-02-11210168013.20 ppb
2013-02-11210169012.30 ppb
2013-02-11210171012.60 ppb
2013-02-11210172012.30 ppb
2013-02-11210177011.90 ppb
2013-02-11210178016.40 ppb
2013-02-11210179016.70 ppb
2013-02-11210180017.70 ppb
2013-02-11210190015.20 ppb
2013-02-11210191013.20 ppb
2013-02-11210192012.80 ppb
2013-02-11210194011.90 ppb
2013-02-11210196011.60 ppb
2013-02-11210197013.10 ppb
2013-02-1121020601ND
2013-02-11210208014.30 ppb
2013-05-22217968012.40 ppb
2013-05-22217969012.70 ppb
2013-05-22217972012.70 ppb
2013-05-22217973013.00 ppb
2013-05-22217978013.20 ppb
2013-05-22217979012.60 ppb
2013-05-22217980013.00 ppb
2013-05-22217982012.10 ppb
2013-05-22217983012.50 ppb
2013-05-22217988012.70 ppb
2013-05-2221798901ND
2013-05-2221799001ND
2013-05-2221799101ND
2013-05-2221800101ND
2013-05-22218002011.70 ppb
2013-05-22218003011.70 ppb
2013-05-22218005011.60 ppb
2013-05-22218007011.80 ppb
2013-05-22218008011.60 ppb
2013-05-22218018011.20 ppb
2013-05-22218020011.40 ppb
2013-08-07231703012.30 ppb
2013-08-07231704012.10 ppb
2013-08-07231706012.20 ppb
2013-08-07231707012.10 ppb
2013-08-07231712012.60 ppb
2013-08-07231713011.80 ppb
2013-08-07231714011.90 ppb
2013-08-07231716012.00 ppb
2013-08-07231717012.10 ppb
2013-08-07231722011.90 ppb
2013-08-07231723011.000 ppb
2013-08-07231724011.10 ppb
2013-08-07231725011.10 ppb
2013-08-07231735011.30 ppb
2013-08-0723173601ND
2013-08-07231737011.000 ppb
2013-08-0723173901ND
2013-08-0723174101ND
2013-08-0723174201ND
2013-08-07231751011.30 ppb
2013-08-07231753011.10 ppb
2013-11-06239309012.20 ppb
2013-11-06239310011.50 ppb
2013-11-06239313012.00 ppb
2013-11-06239314011.50 ppb
2013-11-06239319011.30 ppb
2013-11-06239320011.80 ppb
2013-11-06239321011.20 ppb
2013-11-0623932301ND
2013-11-0623932401ND
2013-11-06239329011.10 ppb
2013-11-0623933001ND
2013-11-0623933101ND
2013-11-0623933201ND
2013-11-0623934201ND
2013-11-0623934301ND
2013-11-0623934401ND
2013-11-0623934601ND
2013-11-0623934801ND
2013-11-0623934901ND
2013-11-0623935801ND
2013-11-0623936001ND
2014-02-19246906011.80 ppb
2014-02-19246907011.90 ppb
2014-02-19246909011.80 ppb
2014-02-19246910012.00 ppb
2014-02-19246914011.000 ppb
2014-02-1924691501ND
2014-02-19246916011.20 ppb
2014-02-19246917012.40 ppb
2014-02-19246921013.20 ppb
2014-02-19246922013.70 ppb
2014-02-19246923013.70 ppb
2014-02-19246931013.60 ppb
2014-02-19246932013.60 ppb
2014-02-19246933013.70 ppb
2014-02-19246934013.60 ppb
2014-02-19246935013.20 ppb
2014-05-14255916013.50 ppb
2014-05-14255917013.00 ppb
2014-05-14255919012.50 ppb
2014-05-14255920013.10 ppb
2014-05-14255924012.30 ppb
2014-05-14255925012.20 ppb
2014-05-14255926011.50 ppb
2014-05-1425592701ND
2014-05-1425593101ND
2014-05-1425593201ND
2014-05-1425593301ND
2014-05-1425594101ND
2014-05-1425594201ND
2014-05-14255943011.10 ppb
2014-05-14255944011.000 ppb
2014-05-1425594501ND
2014-08-19265473012.50 ppb
2014-08-19265474012.40 ppb
2014-08-19265476012.40 ppb
2014-08-19265477012.50 ppb
2014-08-19265481011.90 ppb
2014-08-19265482012.20 ppb
2014-08-19265483012.00 ppb
2014-08-19265484012.00 ppb
2014-08-1926548801ND
2014-08-1926548901ND
2014-08-1926549001ND
2014-08-19265498011.000 ppb
2014-08-1926549901ND
2014-08-1926550001ND
2014-08-1926550101ND
2014-08-1926550201ND
2014-08-19AC309343.70 ppb
2014-08-19AC309351.57 ppb
2014-08-19AC309361.54 ppb
2014-08-19AC309373.81 ppb
2014-08-19AC309383.92 ppb
2014-08-19AC309391.28 ppb
2014-08-19AC309403.64 ppb
2014-08-19AC309411.09 ppb
2014-08-19AC309422.71 ppb
2014-08-19AC309430.920 ppb
2014-08-19AC309443.23 ppb
2014-08-19AC309452.79 ppb
2014-08-19AC309461.11 ppb
2014-08-19AC309472.75 ppb
2014-08-19AC309480.900 ppb
2014-08-19AC309490.870 ppb
2014-11-06273798012.00 ppb
2014-11-06273799012.30 ppb
2014-11-06273801012.50 ppb
2014-11-06273802012.20 ppb
2014-11-06273806012.30 ppb
2014-11-06273807011.70 ppb
2014-11-06273808011.10 ppb
2014-11-06273809011.50 ppb
2014-11-0627381301ND
2014-11-0627381401ND
2014-11-06273815011.50 ppb
2014-11-0627382301ND
2014-11-0627382401ND
2014-11-0627382501ND
2014-11-0627382601ND
2014-11-0627382701ND
2015-02-12281529011.40 ppb
2015-02-12281533011.50 ppb
2015-02-1228153801ND
2015-02-12281544012.90 ppb
2015-02-12281558012.30 ppb
2015-02-12281530011.50 ppb
2015-02-12281532011.60 ppb
2015-02-1228153701ND
2015-02-1228153901ND
2015-02-12281540011.10 ppb
2015-02-12281545013.20 ppb
2015-02-12281546012.30 ppb
2015-02-12281554012.60 ppb
2015-02-12281555012.90 ppb
2015-02-12281556012.30 ppb
2015-02-12281557012.30 ppb
2015-05-12288842012.20 ppb
2015-05-12288845012.90 ppb
2015-05-12288850011.60 ppb
2015-05-12288851012.10 ppb
2015-05-1228885901ND
2015-05-1228887001ND
2015-05-1228887101ND
2015-05-12288872011.10 ppb
2015-05-12288841012.60 ppb
2015-05-12288844012.70 ppb
2015-05-12288852011.50 ppb
2015-05-1228885301ND
2015-05-1228885801ND
2015-05-1228886001ND
2015-05-1228886901ND
2015-05-1228887301ND
2015-08-2529802701ND
2015-08-2529802801ND
2015-08-25298038011.20 ppb
2015-08-25298040011.10 ppb
2015-08-25298010013.50 ppb
2015-08-25298021013.20 ppb
2015-08-25298037011.20 ppb
2015-08-25298039011.20 ppb
2015-08-25298041011.20 ppb
2015-08-25298009013.70 ppb
2015-08-25298012013.40 ppb
2015-08-25298013013.70 ppb
2015-08-25298018014.00 ppb
2015-08-25298019012.50 ppb
2015-08-25298020013.10 ppb
2015-08-2529802601ND
2015-11-12306476011.40 ppb
2015-11-12306477011.30 ppb
2015-11-1230647801ND
2015-11-1230649801ND
2015-11-12306495012.00 ppb
2015-11-12306496011.30 ppb
2015-11-12306497011.20 ppb
2015-11-12306466011.70 ppb
2015-11-12306467011.70 ppb
2015-11-12306469011.90 ppb
2015-11-12306470012.00 ppb
2015-11-12306475011.60 ppb
2015-11-12306483013.00 ppb
2015-11-12306484013.00 ppb
2015-11-12306485013.00 ppb
2015-11-12306494011.20 ppb
2016-02-16312629011.20 ppb
2016-02-1631263501ND
2016-02-16312636011.10 ppb
2016-02-16312637011.90 ppb
2016-02-1631265701ND
2016-02-1631262501ND
2016-02-16312626011.10 ppb
2016-02-16312628011.000 ppb
2016-02-1631263401ND
2016-02-16312642015.10 ppb
2016-02-16312653011.40 ppb
2016-02-16312654011.80 ppb
2016-02-16312655011.40 ppb
2016-02-16312656011.20 ppb
2016-02-25315806013.60 ppb
2016-02-25315807013.30 ppb
2016-05-17319637015.10 ppb
2016-05-17319642014.10 ppb
2016-05-17319643014.10 ppb
2016-05-1731965201ND
2016-05-1731966201ND
2016-05-1731966501ND
2016-05-17319633014.60 ppb
2016-05-17319634016.00 ppb
2016-05-17319636013.90 ppb
2016-05-17319644013.30 ppb
2016-05-17319645011.40 ppb
2016-05-17319650011.10 ppb
2016-05-1731965101ND
2016-05-1731966101ND
2016-05-1731966301ND
2016-05-1731966401ND
2016-08-16330167014.60 ppb
2016-08-16330170013.30 ppb
2016-08-16330171013.40 ppb
2016-08-16330176012.30 ppb
2016-08-16330177011.70 ppb
2016-08-16330179011.10 ppb
2016-08-16330185011.20 ppb
2016-08-1633018601ND
2016-08-1633019501ND
2016-08-16330198011.10 ppb
2016-08-16330199011.30 ppb
2016-08-16330168013.20 ppb
2016-08-16330178011.80 ppb
2016-08-1633018401ND
2016-08-1633019601ND
2016-08-16330197011.10 ppb
2016-11-10337031011.80 ppb
2016-11-10337032012.60 ppb
2016-11-10337040011.50 ppb
2016-11-1033704901ND
2016-11-1033706001ND
2016-11-1033706301ND
2016-11-10337034012.50 ppb
2016-11-10337035011.80 ppb
2016-11-10337041011.30 ppb
2016-11-10337042011.20 ppb
2016-11-1033704301ND
2016-11-1033704801ND
2016-11-1033705001ND
2016-11-10337059011.40 ppb
2016-11-10337061012.70 ppb
2016-11-10337062011.30 ppb
2017-02-02345692012.60 ppb
2017-02-02345693013.80 ppb
2017-02-02345661011.90 ppb
2017-02-02345662011.60 ppb
2017-02-02345664011.60 ppb
2017-02-02345672011.40 ppb
2017-02-02345673011.40 ppb
2017-02-02345678015.10 ppb
2017-02-02345691013.00 ppb
2017-02-02345665011.50 ppb
2017-02-02345670011.40 ppb
2017-02-02345671011.10 ppb
2017-02-02345679014.20 ppb
2017-02-02345689014.30 ppb
2017-02-02345690016.00 ppb
2017-02-16349543011.10 ppb
2017-05-25354028013.30 ppb
2017-05-25354033014.40 ppb
2017-05-25354034013.80 ppb
2017-05-25354036011.20 ppb
2017-05-2535404101ND
2017-05-2535405301ND
2017-05-2535405401ND
2017-05-2535405801ND
2017-05-25354024012.90 ppb
2017-05-25354025013.50 ppb
2017-05-25354027013.40 ppb
2017-05-25354035013.00 ppb
2017-05-2535404201ND
2017-05-2535404301ND
2017-05-2535405501ND
2017-05-2535405601ND
2017-08-17365723012.20 ppb
2017-08-17365725012.00 ppb
2017-08-17365726012.20 ppb
2017-08-17365731012.20 ppb
2017-08-1736573301ND
2017-08-1736573701ND
2017-08-1736573801ND
2017-08-1736574801ND
2017-08-17365722012.50 ppb
2017-08-17365730014.20 ppb
2017-08-17365732012.10 ppb
2017-08-1736573901ND
2017-08-1736574701ND
2017-08-1736574901ND
2017-08-1736575001ND
2017-08-1736575101ND
2017-11-09376608012.20 ppb
2017-11-09376609012.20 ppb
2017-11-09376614011.20 ppb
2017-11-09376616011.50 ppb
2017-11-09376621011.70 ppb
2017-11-0937662201ND
2017-11-09376632011.10 ppb
2017-11-09376605011.70 ppb
2017-11-09376606012.30 ppb
2017-11-09376613011.90 ppb
2017-11-09376615011.40 ppb
2017-11-09376620013.10 ppb
2017-11-0937663001ND
2017-11-09376631011.20 ppb
2017-11-09376633011.10 ppb
2017-11-0937663401ND