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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Joint Municipal WSC

NOTE: Joint Municipal WSC purchases water from City of West Columbia which is required to test for trichloroacetic acid. Sample information shown below was taken by City of West Columbia.

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.

 

124

Samples

0

Samples exceeding legal limit (MCL)

119

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201214.3 ppb43ND - 21.4 ppb
201318.8 ppb443.48 ppb - 27.5 ppb
201421.1 ppb16165.74 ppb - 33.2 ppb
201519.8 ppb161613.2 ppb - 24.4 ppb
201621.2 ppb16169.43 ppb - 35.8 ppb
20177.53 ppb16165.29 ppb - 9.34 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic 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

NOTE: Joint Municipal WSC purchases water from City of West Columbia which is required to test for trichloroacetic acid. Sample information shown below was taken by City of West Columbia.

Date Lab ID Result
2012-01-182120119-214.3 ppb
2012-01-182120119-315.1 ppb
2012-01-182120119-413.8 ppb
2012-01-182120119-5ND
2012-01-182120119-619.3 ppb
2012-01-182120119-713.6 ppb
2012-01-182120119-811.5 ppb
2012-01-182120119-920.8 ppb
2012-05-162120517-2415.5 ppb
2012-05-162120517-2516.5 ppb
2012-05-162120517-2616.7 ppb
2012-05-162120517-2814.6 ppb
2012-05-162120517-2915.9 ppb
2012-05-162120517-3015.7 ppb
2012-05-162120517-3119.1 ppb
2012-05-16212517-27ND
2012-08-162120817-214.2 ppb
2012-08-162120817-314.6 ppb
2012-08-162120817-413.7 ppb
2012-08-162120817-513.6 ppb
2012-08-162120817-624.0 ppb
2012-08-162120817-719.8 ppb
2012-08-162120817-815.2 ppb
2012-08-162120817-914.6 ppb
2012-11-142121115-211.4 ppb
2012-11-142121115-311.5 ppb
2012-11-142121115-412.6 ppb
2012-11-142121115-5ND
2012-11-142121115-619.0 ppb
2012-11-142121115-716.7 ppb
2012-11-142121115-814.7 ppb
2012-11-142121115-911.9 ppb
2013-03-072130308-1214.0 ppb
2013-03-072130308-1314.0 ppb
2013-03-072130308-1415.5 ppb
2013-03-072130308-1515.5 ppb
2013-03-072130308-1628.5 ppb
2013-03-072130308-1720.2 ppb
2013-03-072130308-1816.3 ppb
2013-03-072130308-1914.5 ppb
2013-05-292130530-219.1 ppb
2013-05-292130530-320.9 ppb
2013-05-292130530-420.7 ppb
2013-05-292130530-5ND
2013-05-292130530-621.8 ppb
2013-05-292130530-720.5 ppb
2013-05-292130530-813.4 ppb
2013-05-292130530-912.8 ppb
2013-08-262130827-2020.3 ppb
2013-08-262130827-2122.6 ppb
2013-08-262130827-2221.7 ppb
2013-08-262130827-23ND
2013-08-262130827-2414.4 ppb
2013-08-262130827-2517.6 ppb
2013-08-262130827-2620.8 ppb
2013-08-262130827-2718.4 ppb
2013-10-282131029-222.1 ppb
2013-10-282131029-317.5 ppb
2013-10-282131029-420.0 ppb
2013-10-282131029-523.0 ppb
2014-02-042140205-3031.9 ppb
2014-02-042140205-3115.4 ppb
2014-02-042140205-3230.0 ppb
2014-02-042140205-3331.0 ppb
2014-04-282140429-2126.9 ppb
2014-04-282140429-2224.1 ppb
2014-04-282140429-2320.5 ppb
2014-04-282140429-2424.9 ppb
2014-09-162140917-218.3 ppb
2014-09-162140917-326.5 ppb
2014-09-162140917-419.5 ppb
2014-09-162140917-520.0 ppb
2014-10-032141104-1216.3 ppb
2014-10-032141104-1327.2 ppb
2014-10-032141104-1417.1 ppb
2014-10-032141104-1516.8 ppb
2015-02-022150203-214.9 ppb
2015-02-022150203-315.6 ppb
2015-02-022150203-414.6 ppb
2015-02-022150203-515.8 ppb
2015-04-272150430-5619.1 ppb
2015-04-272150430-5720.0 ppb
2015-04-272150430-5822.5 ppb
2015-04-272150430-5918.9 ppb
2015-08-042150807-1222.0 ppb
2015-08-042150807-1323.9 ppb
2015-08-042150807-1423.0 ppb
2015-08-042150807-1520.5 ppb
2015-11-032151104-217.3 ppb
2015-11-032151104-325.1 ppb
2015-11-032151104-421.6 ppb
2015-11-032151104-510.2 ppb
2016-03-072160308-1428.7 ppb
2016-03-072160308-1130.2 ppb
2016-03-072160308-1237.2 ppb
2016-03-072160308-1329.8 ppb
2016-05-232160524-434.5 ppb
2016-05-232160524-233.6 ppb
2016-05-232160524-337.6 ppb
2016-05-232160524-531.7 ppb
2016-08-012160804-1411.8 ppb
2016-08-012160804-1211.2 ppb
2016-08-012160804-1335.2 ppb
2016-08-012160804-159.48 ppb
2016-10-312161104-495.37 ppb
2016-10-312161104-478.26 ppb
2016-10-312161104-4830.2 ppb
2016-10-312161104-505.52 ppb
2017-01-302170202-138.55 ppb
2017-01-302170202-117.47 ppb
2017-01-302170202-1215.8 ppb
2017-01-302170202-148.17 ppb
2017-05-012170505-209.02 ppb
2017-05-012170505-218.66 ppb
2017-05-012170505-2219.8 ppb
2017-05-012170505-238.41 ppb
2017-09-192170922-126.05 ppb
2017-09-192170922-146.82 ppb
2017-09-202170922-118.23 ppb
2017-09-202170922-1321.9 ppb
2017-10-302171103-115.24 ppb
2017-10-302171103-124.90 ppb
2017-10-302171103-1318.0 ppb
2017-10-302171103-145.37 ppb