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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Town of Tonawanda Water Department

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

 

109

Samples

0

Samples exceeding legal limit (MCL)

109

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20147.43 ppb28284.10 ppb - 16.2 ppb
201514.9 ppb16167.37 ppb - 25.8 ppb
201614.3 ppb16168.61 ppb - 20.8 ppb
201715.1 ppb161610.9 ppb - 23.4 ppb
201814.0 ppb17179.62 ppb - 18.4 ppb
201911.1 ppb16166.43 ppb - 20.5 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
2014-01-08140109216 DBP 1S5.30 ppb
2014-01-08140109213 DBP 1S5.40 ppb
2014-01-08140109212 DBP 1S5.50 ppb
2014-01-08140109218 DBP 1S5.60 ppb
2014-01-0814109217 DBP 1ST5.70 ppb
2014-01-08140109214 DBP 1S4.50 ppb
2014-01-08140109215 DBP 1S4.10 ppb
2014-01-08140109211 DBP1ST4.10 ppb
2014-04-11DBP 2ND Q 14 STA5.20 ppb
2014-04-112ND Q 14STAGE2DB4.40 ppb
2014-04-11STAGE 2 DBP 2NDQ4.60 ppb
2014-04-11LRAA7 2ND Q 14 D5.90 ppb
2014-04-11DBP 2ND Q 14 STA4.60 ppb
2014-04-11STAGE 2DBP 2ND Q5.70 ppb
2014-04-11LRAA8 2ND Q 14 D5.10 ppb
2014-04-11DBP2ND Q 14 STAG5.60 ppb
2014-07-09S4G11068 3RD Q 110.1 ppb
2014-07-09S4G11062 3RD Q 17.00 ppb
2014-07-09S4G11064 3RD Q 18.90 ppb
2014-07-09S4G11066 3RD Q 110.2 ppb
2014-07-09S4G11067 3RD Q 110.8 ppb
2014-07-09S4G11065 3RD Q 18.40 ppb
2014-07-09S4G1106 3RD Q 148.20 ppb
2014-07-09S4G11063 3RD Q 110.1 ppb
2014-10-084 Q 14 DBP SIT E12.6 ppb
2014-10-084 Q 14 DBP SITE11.9 ppb
2014-10-084 Q 2014 DBP SIT16.2 ppb
2014-10-084 Q 14 DBP SITE12.4 ppb
2015-01-07107152 1ST Q 159.01 ppb
2015-01-07010715 1 DBP 1ST9.73 ppb
2015-01-070107154 1ST Q 159.14 ppb
2015-01-070107152 1ST Q 1510.2 ppb
2015-04-084/8/15-28.31 ppb
2015-04-084/8/15-37.41 ppb
2015-04-084/8/15-110.0 ppb
2015-04-084/8/15-47.37 ppb
2015-07-08070815 -119.8 ppb
2015-07-0807/08/15 -222.1 ppb
2015-07-0807/08/15 -421.6 ppb
2015-07-0807/08/15 -321.1 ppb
2015-10-092 4TH Q 15 DBPS18.1 ppb
2015-10-094TH Q 2015 DBPS25.8 ppb
2015-10-093 4TH Q 2015 DBP19.0 ppb
2015-10-094 15 4TH Q DBPS19.0 ppb
2016-01-050105164 DBP10.7 ppb
2016-01-050105162 DBP8.61 ppb
2016-01-0515161 DBP 169.56 ppb
2016-01-050105163 DBP9.97 ppb
2016-04-0504/05/2016-8414.8 ppb
2016-04-0504/05/2016-426414.6 ppb
2016-04-0504/05/2016-297414.5 ppb
2016-04-0504/05/2016-266015.2 ppb
2016-07-0507/05/2016-266019.0 ppb
2016-07-0507/05/2016-8419.5 ppb
2016-07-0507/05/2016-297418.7 ppb
2016-07-0507/05/2016-426420.8 ppb
2016-10-0410/04/2016-0318.8 ppb
2016-10-0410/04/2016-0213.4 ppb
2016-10-0410/04/2016-0110.6 ppb
2016-10-0410/04/2016-0410.7 ppb
2017-01-0301/03/2017-0310.9 ppb
2017-01-0301/03/2017-0111.5 ppb
2017-01-0301/03/2017-0411.1 ppb
2017-01-0301/03/2017-0211.5 ppb
2017-04-0404201791814.9 ppb
2017-04-04042017100113.3 ppb
2017-04-04042014094313.4 ppb
2017-04-04041782113.3 ppb
2017-07-05752017111423.4 ppb
2017-07-05752017111219.3 ppb
2017-07-05752017111521.2 ppb
2017-07-05752017111317.9 ppb
2017-10-03TOT OCT 2017 DBP13.5 ppb
2017-10-03TOT OCT2017 118.6 ppb
2017-10-03TOTOCT 2017 DBP15.2 ppb
2017-10-03TOT OCT 2017 DBP12.2 ppb
2018-01-0910918 DBP9 266013.9 ppb
2018-01-090109181 1ST Q DB13.6 ppb
2018-01-0910918 2974 COLVI11.2 ppb
2018-01-0910918 4264 DELAW13.6 ppb
2018-01-0910918 84 HAWTHOR18.4 ppb
2018-04-034318 4264 DELAWA14.8 ppb
2018-04-034318 2660 NFB DB13.4 ppb
2018-04-034318 84 HAWTHORN17.5 ppb
2018-04-034318 2974 COLVIN12.1 ppb
2018-07-03DBP 3RD Q 18 26615.7 ppb
2018-07-03DBP 3RD Q 18 29716.2 ppb
2018-07-033RD Q 2018 DBP 813.6 ppb
2018-07-03DBP 3RD Q 18 42616.5 ppb
2018-10-09TONA 1 DBP 4TH Q13.8 ppb
2018-10-09TONA 2 DBP 4TH Q11.0 ppb
2018-10-09TONA 3 DBP 4TH Q12.8 ppb
2018-10-09TONA 4 DBP 4TH Q9.62 ppb
2019-01-0784 HAW10.4 ppb
2019-01-074264 DEL8.69 ppb
2019-01-072660 NIAFALLBLVD9.33 ppb
2019-01-102974 COL7.56 ppb
2019-04-092660 NFBLVD9.86 ppb
2019-04-092974 COLVIN7.94 ppb
2019-04-094264 DELAWARE9.52 ppb
2019-04-0984 HAWTHORNE10.9 ppb
2019-07-092974 COLVIN 3RD19.0 ppb
2019-07-0984 HAWTHORNE 3QT14.8 ppb
2019-07-092660 NIA FALL 3Q20.5 ppb
2019-07-094264 DELAWARE 3Q18.3 ppb
2019-10-084264 DEL 4QTR8.41 ppb
2019-10-082660 NIA FALLS 47.62 ppb
2019-10-082974 COLVIN 4QTR7.53 ppb
2019-10-0884 HAW 4QTR6.43 ppb