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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Rowland Water District

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.

 

184

Samples

0

Samples exceeding legal limit (MCL)

155

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20124.67 ppb32322.60 ppb - 6.80 ppb
20134.77 ppb32322.10 ppb - 6.70 ppb
20142.77 ppb3226ND - 5.70 ppb
20152.13 ppb3221ND - 4.70 ppb
20162.75 ppb3227ND - 5.10 ppb
20175.94 ppb2417ND - 12.5 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

Date Lab ID Result
2012-03-123761-800-10004.60 ppb
2012-03-123761-801-10104.60 ppb
2012-03-123761-802-08004.50 ppb
2012-03-123761-803-08154.70 ppb
2012-03-123761-804-08304.80 ppb
2012-03-123761-805-11304.80 ppb
2012-03-123761-806-09004.60 ppb
2012-03-123761-807-09454.60 ppb
2012-06-113761-800-09206.80 ppb
2012-06-113761-801-09356.40 ppb
2012-06-113761-802-09006.10 ppb
2012-06-113761-803-08006.20 ppb
2012-06-113761-804-08306.00 ppb
2012-06-113761-805-08306.60 ppb
2012-06-113761-806-11206.30 ppb
2012-06-113761-807-11006.20 ppb
2012-09-103761-800-08055.50 ppb
2012-09-103761-801-08205.30 ppb
2012-09-103761-802-08505.20 ppb
2012-09-103761-803-08075.10 ppb
2012-09-103761-804-08274.10 ppb
2012-09-103761-805-08474.80 ppb
2012-09-103761-806-09405.20 ppb
2012-09-103761-807-10304.90 ppb
2012-12-103761-800-08052.70 ppb
2012-12-103761-801-08152.80 ppb
2012-12-103761-802-08402.80 ppb
2012-12-103761-803-09052.60 ppb
2012-12-103761-804-09252.70 ppb
2012-12-103761-805-08252.60 ppb
2012-12-103761-806-11152.60 ppb
2012-12-103761-807-10502.60 ppb
2013-03-113761-800-07505.40 ppb
2013-03-113761-801-08055.60 ppb
2013-03-113761-802-08405.20 ppb
2013-03-113761-803-08555.40 ppb
2013-03-113761-804-09305.60 ppb
2013-03-113761-805-08105.60 ppb
2013-03-113761-806-10505.20 ppb
2013-03-113761-807-10355.20 ppb
2013-06-103761-800-07555.40 ppb
2013-06-103761-801-08055.30 ppb
2013-06-103761-802-09055.70 ppb
2013-06-103761-803-11155.60 ppb
2013-06-103761-804-08085.70 ppb
2013-06-103761-805-08576.70 ppb
2013-06-103761-806-09455.40 ppb
2013-06-103761-807-10406.00 ppb
2013-09-093761-800-08455.70 ppb
2013-09-093761-801-09006.20 ppb
2013-09-093761-802-09255.90 ppb
2013-09-093761-803-09405.90 ppb
2013-09-093761-804-10054.70 ppb
2013-09-093761-805-08506.30 ppb
2013-09-093761-806-11405.50 ppb
2013-09-093761-807-11106.20 ppb
2013-12-093761-800-08102.10 ppb
2013-12-093761-801-08302.20 ppb
2013-12-093761-802-09202.10 ppb
2013-12-093761-803-08002.20 ppb
2013-12-093761-804-08252.40 ppb
2013-12-093761-805-09152.10 ppb
2013-12-093761-806-10252.10 ppb
2013-12-093761-807-10452.10 ppb
2014-03-103761-800-08251.40 ppb
2014-03-103761-801-08401.30 ppb
2014-03-103761-802-0925ND
2014-03-103761-803-0940ND
2014-03-103761-804-10002.80 ppb
2014-03-103761-805-0820ND
2014-03-103761-806-11102.60 ppb
2014-03-103761-807-1110ND
2014-06-093761-800-08004.70 ppb
2014-06-093761-801-11004.70 ppb
2014-06-093761-802-08505.70 ppb
2014-06-093761-803-09104.80 ppb
2014-06-093761-804-09304.70 ppb
2014-06-093761-805-08005.70 ppb
2014-06-093761-806-11004.30 ppb
2014-06-093761-807-10404.60 ppb
2014-09-083761-800-10504.10 ppb
2014-09-083761-801-10303.80 ppb
2014-09-083761-802-07504.30 ppb
2014-09-083761-803-08103.90 ppb
2014-09-083761-804-08303.70 ppb
2014-09-083761-805-08304.80 ppb
2014-09-083761-806-11303.90 ppb
2014-09-083761-807-10004.00 ppb
2014-12-083761-800-0750ND
2014-12-083761-801-1100ND
2014-12-083761-802-08501.40 ppb
2014-12-083761-803-09051.40 ppb
2014-12-083761-804-09201.80 ppb
2014-12-083761-805-08451.50 ppb
2014-12-083761-806-10001.30 ppb
2014-12-083761-807-10501.40 ppb
2015-03-023761-800-0750ND
2015-03-023761-801-0800ND
2015-03-023761-802-0840ND
2015-03-023761-803-0850ND
2015-03-023761-804-09202.10 ppb
2015-03-023761-805-0955ND
2015-03-023761-806-11202.30 ppb
2015-03-023761-807-1150ND
2015-06-083761-800-08002.90 ppb
2015-06-083761-801-08152.90 ppb
2015-06-083761-802-08453.00 ppb
2015-06-083761-803-09002.90 ppb
2015-06-083761-804-10003.70 ppb
2015-06-083761-805-09303.90 ppb
2015-06-083761-806-11002.50 ppb
2015-06-083761-807-11402.80 ppb
2015-09-143761-800-07454.60 ppb
2015-09-143761-801-07554.70 ppb
2015-09-143761-802-08204.00 ppb
2015-09-143761-803-08403.60 ppb
2015-09-143761-804-09303.00 ppb
2015-09-143761-805-09054.10 ppb
2015-09-143761-806-10404.30 ppb
2015-09-143761-807-11153.80 ppb
2015-12-143761-800-0805ND
2015-12-143761-801-0815ND
2015-12-143761-802-0845ND
2015-12-143761-803-0905ND
2015-12-143761-804-10202.10 ppb
2015-12-143761-805-09552.20 ppb
2015-12-143761-806-11202.70 ppb
2015-12-143761-807-1205ND
2016-03-143761-800-0800ND
2016-03-143761-801-0815ND
2016-03-143761-802-0845ND
2016-03-143761-803-0900ND
2016-03-143761-804-10051.70 ppb
2016-03-143761-805-09451.10 ppb
2016-03-143761-806-11201.10 ppb
2016-03-143761-807-1215ND
2016-06-133761-800-08003.50 ppb
2016-06-133761-801-08103.70 ppb
2016-06-133761-802-08453.70 ppb
2016-06-133761-803-09003.80 ppb
2016-06-133761-804-10053.90 ppb
2016-06-133761-805-09353.50 ppb
2016-06-133761-806-11054.10 ppb
2016-06-133761-807-11403.90 ppb
2016-09-123761-800-08054.50 ppb
2016-09-123761-801-08204.50 ppb
2016-09-123761-802-08455.00 ppb
2016-09-123761-803-07455.10 ppb
2016-09-123761-804-09004.60 ppb
2016-09-123761-805-09305.10 ppb
2016-09-123761-806-10354.90 ppb
2016-09-123761-807-11304.90 ppb
2016-12-123761-800-08002.10 ppb
2016-12-123761-801-08102.40 ppb
2016-12-123761-802-08301.80 ppb
2016-12-123761-803-08501.80 ppb
2016-12-123761-804-09351.40 ppb
2016-12-123761-805-09151.80 ppb
2016-12-123761-806-11002.10 ppb
2016-12-123761-807-11401.90 ppb
2017-03-133761-800-081511.8 ppb
2017-03-133761-801-083011.3 ppb
2017-03-133761-802-090011.1 ppb
2017-03-133761-803-092511.1 ppb
2017-03-133761-804-101511.3 ppb
2017-03-133761-805-095511.6 ppb
2017-03-133761-806-111512.5 ppb
2017-03-133761-807-114511.5 ppb
2017-09-113761-800-08005.40 ppb
2017-09-113761-801-08155.70 ppb
2017-09-113761-802-08405.00 ppb
2017-09-113761-803-08556.60 ppb
2017-09-113761-804-09507.30 ppb
2017-09-113761-805-09207.50 ppb
2017-09-113761-806-11005.80 ppb
2017-09-113761-807-11456.00 ppb
2017-12-113761-800-0800ND
2017-12-113761-801-0810ND
2017-12-113761-802-0830ND
2017-12-113761-803-0845ND
2017-12-113761-804-0900ND
2017-12-113761-805-09401.000 ppb
2017-12-113761-806-1040ND
2017-12-113761-807-1125ND