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Trichloroacetic acid

Watertown City

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.

 

142

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201035.6 ppb16161.20 ppb - 65.0 ppb
201124.8 ppb1210ND - 40.0 ppb
201225.6 ppb1613ND - 43.0 ppb
201329.6 ppb16161.20 ppb - 60.0 ppb
201428.1 ppb34341.60 ppb - 47.0 ppb
201525.6 ppb484812.0 ppb - 41.0 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.5 ppb

The 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.

EPA Maximum Contaminant
Level Goal (MCLG)20.0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-02-111002459-00319.0 ppb
2010-02-111002459-00119.0 ppb
2010-02-111002459-00447.0 ppb
2010-02-111002459-00244.0 ppb
2010-05-131007613-00434.0 ppb
2010-05-131007613-00322.0 ppb
2010-05-131007613-00122.0 ppb
2010-05-131007613-00222.0 ppb
2010-08-131013847-00363.0 ppb
2010-08-131013847-0045.00 ppb
2010-08-131013847-00156.0 ppb
2010-08-131013847-00255.0 ppb
2010-11-09101957-00146.0 ppb
2010-11-091019574-00365.0 ppb
2010-11-091019574-00249.0 ppb
2010-11-091019574-0041.20 ppb
2011-05-111106553-00135.0 ppb
2011-05-111106553-00229.0 ppb
2011-05-111106553-00440.0 ppb
2011-05-111106553-00338.0 ppb
2011-08-031112110-00334.0 ppb
2011-08-031112110-004ND
2011-08-031112110-00235.0 ppb
2011-08-031112110-00127.0 ppb
2011-11-141118448-00121.0 ppb
2011-11-141118448-00322.0 ppb
2011-11-141118448-00217.0 ppb
2011-11-141118448-004ND
2012-02-221202714-00443.0 ppb
2012-02-221202714-00320.0 ppb
2012-02-221202714-00223.0 ppb
2012-02-221202714-00139.0 ppb
2012-05-021206534-00334.0 ppb
2012-05-021206534-001ND
2012-05-021206534-00443.0 ppb
2012-05-021026534-00240.0 ppb
2012-08-011212371-00219.0 ppb
2012-08-011212371-00917.0 ppb
2012-08-011212371-006ND
2012-08-011212371-01023.0 ppb
2012-11-071218302-006ND
2012-11-071218302-00927.0 ppb
2012-11-071218302-01042.0 ppb
2012-11-071218302-00239.0 ppb
2013-02-061301770-00715.0 ppb
2013-02-061301770-00660.0 ppb
2013-02-061301770-00824.0 ppb
2013-02-061301770-00219.0 ppb
2013-05-08MRT0031 DBP 2QTR1345.0 ppb
2013-05-08DS00014 DBP 2QTR1332.0 ppb
2013-05-08DS00026 DBP 2QTR1329.0 ppb
2013-05-08DS00015 2QTR201332.0 ppb
2013-08-061313147-0041.20 ppb
2013-08-061313147-00341.0 ppb
2013-08-071313147-00252.0 ppb
2013-08-081313147-00123.0 ppb
2013-11-061318290-01225.0 ppb
2013-11-061318290-01121.0 ppb
2013-11-061318290-00729.0 ppb
2013-11-061318290-01026.0 ppb
2014-02-051401657-01210.00 ppb
2014-02-051401657-01113.0 ppb
2014-02-051401657-0108.60 ppb
2014-02-051401657-00719.0 ppb
2014-02-051401657-0131.60 ppb
2014-04-021404398-00928.0 ppb
2014-05-071406257-01129.0 ppb
2014-05-071406257-01239.0 ppb
2014-05-071406257-00143.0 ppb
2014-05-071406257-00429.0 ppb
2014-07-161410755-01122.0 ppb
2014-07-161410755-01225.0 ppb
2014-07-161410755-01026.0 ppb
2014-07-161410755-00742.0 ppb
2014-08-061412351-00743.0 ppb
2014-08-061412351-01239.0 ppb
2014-08-061412351-01129.0 ppb
2014-08-061412351-01044.0 ppb
2014-09-101414832-00927.0 ppb
2014-09-101414832-01118.0 ppb
2014-09-101414832-00822.0 ppb
2014-09-101414832-01219.0 ppb
2014-10-081416618-01234.0 ppb
2014-10-081416618-01036.0 ppb
2014-10-081416618-01140.0 ppb
2014-10-081416618-00733.0 ppb
2014-11-051418303-01042.0 ppb
2014-11-051418303-00747.0 ppb
2014-11-051418303-01131.0 ppb
2014-11-051418303-01235.0 ppb
2014-12-031419724-01218.0 ppb
2014-12-031419724-01117.0 ppb
2014-12-031419724-00818.0 ppb
2014-12-031419724-00929.0 ppb
2015-01-141500772-01016.0 ppb
2015-01-141500772-01214.0 ppb
2015-01-151500772-01114.0 ppb
2015-01-151500772-00732.0 ppb
2015-02-041501522-01114.0 ppb
2015-02-041501522-00819.0 ppb
2015-02-041501522-01218.0 ppb
2015-02-041501522-00922.0 ppb
2015-03-041502825-01023.0 ppb
2015-03-041502825-01115.0 ppb
2015-03-041502825-01214.0 ppb
2015-03-041502825-00732.0 ppb
2015-04-081504564-01212.0 ppb
2015-04-081504564-01015.0 ppb
2015-04-081504564-01115.0 ppb
2015-04-081504564-00721.0 ppb
2015-05-061506084-01232.0 ppb
2015-05-061506084-01037.0 ppb
2015-05-061506084-00736.0 ppb
2015-05-061506084-01135.0 ppb
2015-06-031507791-01225.0 ppb
2015-06-031507791-01020.0 ppb
2015-06-031507791-01122.0 ppb
2015-06-031507791-00732.0 ppb
2015-07-081510103-01131.0 ppb
2015-07-081510103-01232.0 ppb
2015-07-081510103-01039.0 ppb
2015-07-081510103-00741.0 ppb
2015-08-051511980-01224.0 ppb
2015-08-051511980-01123.0 ppb
2015-08-051511980-00724.0 ppb
2015-08-051511980-01030.0 ppb
2015-09-091514301-01038.0 ppb
2015-09-091514301-01236.0 ppb
2015-09-091514301-01133.0 ppb
2015-09-091514301-00738.0 ppb
2015-10-071516030-01227.0 ppb
2015-10-071516030-01120.0 ppb
2015-10-071516030-00628.0 ppb
2015-10-071516030-00929.0 ppb
2015-11-041517576-01035.0 ppb
2015-11-041517576-01120.0 ppb
2015-11-041517576-00731.0 ppb
2015-11-041517576-01224.0 ppb
2015-12-021519086-01118.0 ppb
2015-12-021519086-01220.0 ppb
2015-12-021519086-00726.0 ppb
2015-12-021519086-01025.0 ppb