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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

City of Stockton

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.

 

475

Samples

0

Samples exceeding legal limit (MCL)

445

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20146.47 ppb7673ND - 13.0 ppb
20154.60 ppb7657ND - 16.0 ppb
20167.54 ppb76761.000 ppb - 23.0 ppb
20177.57 ppb7671ND - 27.0 ppb
20186.74 ppb76763.00 ppb - 16.0 ppb
20197.50 ppb9592ND - 17.0 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
2014-01-135810-900-08287.70 ppb
2014-01-135810-901-0905ND
2014-01-135810-902-10206.50 ppb
2014-01-135810-907-11277.40 ppb
2014-01-135810-913-11007.20 ppb
2014-01-145810-914-08432.20 ppb
2014-01-145810-915-09242.30 ppb
2014-01-145810-916-09482.10 ppb
2014-01-145810-917-10192.30 ppb
2014-01-145810-918-10502.20 ppb
2014-01-155810-903-07532.60 ppb
2014-01-155810-904-08385.30 ppb
2014-01-155810-905-09004.90 ppb
2014-01-155810-906-09594.80 ppb
2014-01-155810-908-08088.30 ppb
2014-01-155810-909-09129.20 ppb
2014-01-155810-910-092910.00 ppb
2014-01-155810-911-10029.30 ppb
2014-01-155810-912-09469.50 ppb
2014-04-165810-900-07438.20 ppb
2014-04-165810-901-08006.40 ppb
2014-04-165810-902-08198.10 ppb
2014-04-165810-903-08157.60 ppb
2014-04-165810-904-090711.0 ppb
2014-04-165810-905-092912.0 ppb
2014-04-165810-906-09578.00 ppb
2014-04-165810-907-10208.10 ppb
2014-04-165810-908-11149.10 ppb
2014-04-165810-909-11369.10 ppb
2014-04-165810-910-12289.30 ppb
2014-04-165810-911-12107.70 ppb
2014-04-165810-912-11519.70 ppb
2014-04-165810-913-08337.20 ppb
2014-04-165810-914-08464.70 ppb
2014-04-165810-915-09005.10 ppb
2014-04-165810-916-091613.0 ppb
2014-04-165810-917-093412.0 ppb
2014-04-165810-918-08006.70 ppb
2014-07-165810-900-07402.90 ppb
2014-07-165810-901-0752ND
2014-07-165810-902-08152.30 ppb
2014-07-165810-903-0814ND
2014-07-165810-904-08456.90 ppb
2014-07-165810-905-09007.70 ppb
2014-07-165810-906-09263.40 ppb
2014-07-165810-907-10204.50 ppb
2014-07-165810-908-09384.60 ppb
2014-07-165810-909-10053.40 ppb
2014-07-165810-910-10204.40 ppb
2014-07-165810-911-10574.50 ppb
2014-07-165810-912-10405.00 ppb
2014-07-165810-913-08301.20 ppb
2014-07-165810-914-08521.40 ppb
2014-07-165810-915-09085.80 ppb
2014-07-165810-916-09408.20 ppb
2014-07-165810-917-10039.60 ppb
2014-07-165810-918-08005.50 ppb
2014-10-155810-900-08024.40 ppb
2014-10-155810-901-090611.0 ppb
2014-10-155810-902-08506.60 ppb
2014-10-155810-903-08297.00 ppb
2014-10-155810-904-084912.0 ppb
2014-10-155810-905-090510.00 ppb
2014-10-155810-906-10455.40 ppb
2014-10-155810-907-11064.60 ppb
2014-10-155810-908-09485.10 ppb
2014-10-155810-909-10224.80 ppb
2014-10-155810-910-10496.90 ppb
2014-10-155810-911-10425.20 ppb
2014-10-155810-912-10316.20 ppb
2014-10-155810-913-08159.30 ppb
2014-10-155810-914-09217.60 ppb
2014-10-155810-915-09356.10 ppb
2014-10-155810-916-101711.0 ppb
2014-10-155810-917-095511.0 ppb
2014-10-155810-918-08019.70 ppb
2015-01-145810-900-075010.00 ppb
2015-01-145810-901-08132.70 ppb
2015-01-145810-902-083210.00 ppb
2015-01-145810-903-081711.0 ppb
2015-01-145810-904-08447.60 ppb
2015-01-145810-905-091513.0 ppb
2015-01-145810-906-105011.0 ppb
2015-01-145810-907-111713.0 ppb
2015-01-145810-908-100311.0 ppb
2015-01-145810-909-104012.0 ppb
2015-01-145810-910-111516.0 ppb
2015-01-145810-911-12107.10 ppb
2015-01-145810-912-114010.00 ppb
2015-01-145810-913-08547.00 ppb
2015-01-145810-914-09198.60 ppb
2015-01-145810-915-09397.20 ppb
2015-01-145810-916-095210.00 ppb
2015-01-145810-917-102113.0 ppb
2015-01-145810-918-07499.40 ppb
2015-04-155810-900-08201.40 ppb
2015-04-155810-901-0842ND
2015-04-155810-902-09142.00 ppb
2015-04-155810-903-08503.50 ppb
2015-04-155810-904-09457.60 ppb
2015-04-155810-905-09307.00 ppb
2015-04-155810-906-11573.90 ppb
2015-04-155810-907-12216.20 ppb
2015-04-155810-908-103510.00 ppb
2015-04-155810-909-11554.10 ppb
2015-04-155810-910-11406.30 ppb
2015-04-155810-911-11054.50 ppb
2015-04-155810-912-11204.30 ppb
2015-04-155810-913-09571.50 ppb
2015-04-155810-914-10224.40 ppb
2015-04-155810-915-10347.20 ppb
2015-04-155810-916-111810.00 ppb
2015-04-155810-917-105912.0 ppb
2015-04-155810-918-08308.50 ppb
2015-07-155810-900-0748ND
2015-07-155810-901-0812ND
2015-07-155810-902-08411.20 ppb
2015-07-155810-903-08271.30 ppb
2015-07-155810-904-08431.80 ppb
2015-07-155810-905-09022.20 ppb
2015-07-155810-906-1048ND
2015-07-155810-907-1108ND
2015-07-155810-908-11259.20 ppb
2015-07-155810-909-1105ND
2015-07-155810-910-10462.00 ppb
2015-07-155810-911-0948ND
2015-07-155810-912-1020ND
2015-07-155810-913-09021.40 ppb
2015-07-155810-914-09301.40 ppb
2015-07-155810-915-09541.50 ppb
2015-07-155810-916-10201.30 ppb
2015-07-155810-917-11202.80 ppb
2015-07-155810-918-08101.40 ppb
2015-10-145810-900-0825ND
2015-10-145810-901-0900ND
2015-10-145810-902-0915ND
2015-10-145810-903-0815ND
2015-10-145810-904-0848ND
2015-10-145810-905-0920ND
2015-10-145810-906-1105ND
2015-10-145810-907-1045ND
2015-10-145810-908-10006.20 ppb
2015-10-145810-909-10223.10 ppb
2015-10-145810-910-10486.00 ppb
2015-10-145810-911-11064.00 ppb
2015-10-145810-912-11294.20 ppb
2015-10-145810-913-0930ND
2015-10-145810-914-0945ND
2015-10-145810-915-10001.50 ppb
2015-10-145810-916-10151.50 ppb
2015-10-145810-917-10301.50 ppb
2015-10-145810-918-0750ND
2016-01-285810-900-07323.80 ppb
2016-01-285810-901-07516.00 ppb
2016-01-285810-902-08092.10 ppb
2016-01-285810-903-08281.90 ppb
2016-01-285810-904-09545.80 ppb
2016-01-285810-905-10156.10 ppb
2016-01-285810-906-10482.20 ppb
2016-01-285810-907-10301.10 ppb
2016-01-285810-908-120023.0 ppb
2016-01-285810-909-113515.0 ppb
2016-01-285810-910-111519.0 ppb
2016-01-285810-911-104019.0 ppb
2016-01-285810-912-110016.0 ppb
2016-01-285810-913-08283.50 ppb
2016-01-285810-914-08516.50 ppb
2016-01-285810-915-09109.50 ppb
2016-01-285810-916-09326.70 ppb
2016-01-285810-917-09544.70 ppb
2016-01-285810-918-08106.40 ppb
2016-04-135810-900-08009.80 ppb
2016-04-135810-901-08208.50 ppb
2016-04-135810-902-083910.00 ppb
2016-04-135810-903-08239.30 ppb
2016-04-135810-904-09328.80 ppb
2016-04-135810-905-09518.70 ppb
2016-04-135810-906-110010.00 ppb
2016-04-135810-907-112910.00 ppb
2016-04-135810-908-09089.10 ppb
2016-04-135810-909-08518.00 ppb
2016-04-135810-910-105617.0 ppb
2016-04-135810-911-112512.0 ppb
2016-04-135810-912-114812.0 ppb
2016-04-135810-913-08558.50 ppb
2016-04-135810-914-09208.40 ppb
2016-04-135810-915-09358.30 ppb
2016-04-135810-916-095710.00 ppb
2016-04-135810-917-10159.60 ppb
2016-04-135810-918-08018.90 ppb
2016-07-135867-900-08004.00 ppb
2016-07-135867-901-08256.00 ppb
2016-07-135867-902-09004.00 ppb
2016-07-135867-903-08107.00 ppb
2016-07-135867-904-08528.00 ppb
2016-07-135867-905-09079.00 ppb
2016-07-135867-906-11306.00 ppb
2016-07-135867-907-11493.00 ppb
2016-07-135867-908-093013.0 ppb
2016-07-135867-909-094110.00 ppb
2016-07-135867-910-095513.0 ppb
2016-07-135867-911-102011.0 ppb
2016-07-135867-912-100810.00 ppb
2016-07-135867-913-09292.00 ppb
2016-07-135867-914-09503.00 ppb
2016-07-135867-915-10095.00 ppb
2016-07-135867-916-10285.00 ppb
2016-07-135867-917-11055.00 ppb
2016-07-135867-918-07526.00 ppb
2016-10-125867-900-08001.000 ppb
2016-10-125867-901-08304.00 ppb
2016-10-125867-902-08483.00 ppb
2016-10-125867-903-08281.000 ppb
2016-10-125867-904-09181.000 ppb
2016-10-125867-905-09331.000 ppb
2016-10-125867-906-11133.00 ppb
2016-10-125867-907-11352.00 ppb
2016-10-125867-908-101420.0 ppb
2016-10-125867-909-104110.00 ppb
2016-10-125867-910-110815.0 ppb
2016-10-125867-911-11309.00 ppb
2016-10-125867-912-11499.00 ppb
2016-10-125867-913-09154.00 ppb
2016-10-125867-914-09363.00 ppb
2016-10-125867-915-09534.00 ppb
2016-10-125867-916-10154.00 ppb
2016-10-125867-917-10393.00 ppb
2016-10-125867-918-08101.000 ppb
2017-01-185867-900-080016.0 ppb
2017-01-185867-901-084518.0 ppb
2017-01-185867-902-091016.0 ppb
2017-01-185867-903-075413.0 ppb
2017-01-185867-904-085012.0 ppb
2017-01-185867-905-09098.00 ppb
2017-01-185867-906-125517.0 ppb
2017-01-185867-907-133013.0 ppb
2017-01-185867-908-095819.0 ppb
2017-01-185867-909-1021ND
2017-01-185867-910-110027.0 ppb
2017-01-185867-911-115425.0 ppb
2017-01-185867-912-113111.0 ppb
2017-01-185867-913-093516.0 ppb
2017-01-185867-914-095517.0 ppb
2017-01-185867-915-102514.0 ppb
2017-01-185867-916-104513.0 ppb
2017-01-185867-917-113510.00 ppb
2017-01-185867-918-074113.0 ppb
2017-04-195867-900-08021.000 ppb
2017-04-195867-901-0821ND
2017-04-195867-902-08382.00 ppb
2017-04-195867-903-085010.00 ppb
2017-04-195867-904-10209.00 ppb
2017-04-195867-905-10457.00 ppb
2017-04-195867-906-11405.00 ppb
2017-04-195867-907-12066.00 ppb
2017-04-195867-908-125521.0 ppb
2017-04-195867-909-1220ND
2017-04-195867-910-11553.00 ppb
2017-04-195867-911-1115ND
2017-04-195867-912-1135ND
2017-04-195867-913-09002.00 ppb
2017-04-195867-914-09231.000 ppb
2017-04-195867-915-09501.000 ppb
2017-04-195867-916-10232.00 ppb
2017-04-195867-917-11135.00 ppb
2017-04-195867-918-08258.00 ppb
2017-07-265867-900-07406.00 ppb
2017-07-265867-901-08156.00 ppb
2017-07-265867-902-08455.00 ppb
2017-07-265867-903-07575.00 ppb
2017-07-265867-904-08146.00 ppb
2017-07-265867-905-08386.00 ppb
2017-07-265867-906-12155.00 ppb
2017-07-265867-907-12455.00 ppb
2017-07-265867-908-10016.00 ppb
2017-07-265867-909-10328.00 ppb
2017-07-265867-910-10519.00 ppb
2017-07-265867-911-11099.00 ppb
2017-07-265867-912-112910.00 ppb
2017-07-265867-913-09155.00 ppb
2017-07-265867-914-09456.00 ppb
2017-07-265867-915-10155.00 ppb
2017-07-265867-916-10456.00 ppb
2017-07-265867-917-11307.00 ppb
2017-07-265867-918-07396.00 ppb
2017-10-185867-900-07553.00 ppb
2017-10-185867-901-08254.00 ppb
2017-10-185867-902-08553.00 ppb
2017-10-185867-903-08233.00 ppb
2017-10-185867-904-08423.00 ppb
2017-10-185867-905-09043.00 ppb
2017-10-185867-906-11353.00 ppb
2017-10-185867-907-11553.00 ppb
2017-10-185867-908-10128.00 ppb
2017-10-185867-909-103911.0 ppb
2017-10-185867-910-110012.0 ppb
2017-10-185867-911-11208.00 ppb
2017-10-185867-912-114110.00 ppb
2017-10-185867-913-09154.00 ppb
2017-10-185867-914-09353.00 ppb
2017-10-185867-915-10053.00 ppb
2017-10-185867-916-10253.00 ppb
2017-10-185867-917-11003.00 ppb
2017-10-185867-918-08013.00 ppb
2018-01-175867-900-08009.00 ppb
2018-01-175867-901-08308.00 ppb
2018-01-175867-902-09008.00 ppb
2018-01-175867-903-08238.00 ppb
2018-01-175867-904-08587.00 ppb
2018-01-175867-905-09266.00 ppb
2018-01-175867-906-11257.00 ppb
2018-01-175867-907-11506.00 ppb
2018-01-175867-908-11047.00 ppb
2018-01-175867-909-12099.00 ppb
2018-01-175867-910-12309.00 ppb
2018-01-175867-911-13039.00 ppb
2018-01-175867-912-12498.00 ppb
2018-01-175867-913-09206.00 ppb
2018-01-175867-914-09407.00 ppb
2018-01-175867-915-10007.00 ppb
2018-01-175867-916-102010.00 ppb
2018-01-175867-917-10407.00 ppb
2018-01-175867-918-07557.00 ppb
2018-04-189590-900-07376.70 ppb
2018-04-189590-901-08025.60 ppb
2018-04-189590-902-08417.20 ppb
2018-04-189590-903-08256.80 ppb
2018-04-189590-904-09006.40 ppb
2018-04-189590-905-09305.40 ppb
2018-04-189590-906-11045.10 ppb
2018-04-189590-907-11236.40 ppb
2018-04-189590-908-104013.0 ppb
2018-04-189590-909-111012.0 ppb
2018-04-189590-910-114014.0 ppb
2018-04-189590-911-122516.0 ppb
2018-04-189590-912-120515.0 ppb
2018-04-189590-913-08584.90 ppb
2018-04-189590-914-09165.00 ppb
2018-04-189590-915-09365.30 ppb
2018-04-189590-916-09567.50 ppb
2018-04-189590-917-10215.70 ppb
2018-04-189590-918-07555.90 ppb
2018-07-189590-900-07278.30 ppb
2018-07-189590-901-07567.40 ppb
2018-07-189590-902-08346.10 ppb
2018-07-189590-906-11476.50 ppb
2018-07-189590-907-12186.60 ppb
2018-07-189590-913-08578.30 ppb
2018-07-189590-914-09188.10 ppb
2018-07-189590-915-09376.80 ppb
2018-07-189590-916-10259.00 ppb
2018-07-189590-917-11008.60 ppb
2018-07-259590-903-08388.10 ppb
2018-07-259590-904-09487.60 ppb
2018-07-259590-905-09157.50 ppb
2018-07-259590-908-11206.00 ppb
2018-07-259590-909-12006.10 ppb
2018-07-259590-911-13326.70 ppb
2018-07-259590-912-12596.40 ppb
2018-07-259590-918-08016.60 ppb
2018-08-229590-910-08436.60 ppb
2018-10-179590-900-08164.10 ppb
2018-10-179590-901-08303.90 ppb
2018-10-179590-902-09243.00 ppb
2018-10-179590-903-09233.10 ppb
2018-10-179590-904-10323.10 ppb
2018-10-179590-905-10044.00 ppb
2018-10-179590-906-12214.70 ppb
2018-10-179590-907-12424.40 ppb
2018-10-179590-908-11063.50 ppb
2018-10-179590-909-11243.20 ppb
2018-10-179590-910-13006.40 ppb
2018-10-179590-911-12415.00 ppb
2018-10-179590-912-12024.10 ppb
2018-10-179590-913-09484.00 ppb
2018-10-179590-914-10163.90 ppb
2018-10-179590-915-10403.60 ppb
2018-10-179590-916-11014.10 ppb
2018-10-179590-917-11364.70 ppb
2018-10-179590-918-08343.50 ppb
2019-01-165810-900-07409.20 ppb
2019-01-165810-901-08159.60 ppb
2019-01-165810-902-08418.80 ppb
2019-01-165810-903-08099.60 ppb
2019-01-165810-904-08409.00 ppb
2019-01-165810-905-09119.10 ppb
2019-01-165810-906-11449.30 ppb
2019-01-165810-907-11209.50 ppb
2019-01-165810-908-101415.0 ppb
2019-01-165810-909-105215.0 ppb
2019-01-165810-910-111513.0 ppb
2019-01-165810-911-114314.0 ppb
2019-01-165810-912-121214.0 ppb
2019-01-165810-913-09039.40 ppb
2019-01-165810-914-09279.40 ppb
2019-01-165810-915-09419.60 ppb
2019-01-165810-916-10049.50 ppb
2019-01-165810-917-10268.20 ppb
2019-01-165810-918-07409.90 ppb
2019-01-305810-900-0750ND
2019-01-305810-901-0808ND
2019-01-305810-902-08322.20 ppb
2019-01-305810-903-08271.60 ppb
2019-01-305810-904-085713.0 ppb
2019-01-305810-905-100315.0 ppb
2019-01-305810-906-110017.0 ppb
2019-01-305810-907-112914.0 ppb
2019-01-305810-908-10379.50 ppb
2019-01-305810-909-11118.40 ppb
2019-01-305810-910-112615.0 ppb
2019-01-305810-911-114716.0 ppb
2019-01-305810-912-12099.30 ppb
2019-01-305810-913-085314.0 ppb
2019-01-305810-914-091116.0 ppb
2019-01-305810-915-092916.0 ppb
2019-01-305810-916-095414.0 ppb
2019-01-305810-917-101416.0 ppb
2019-01-305810-918-075315.0 ppb
2019-04-105810-900-08014.60 ppb
2019-04-105810-901-08214.40 ppb
2019-04-105810-902-08434.50 ppb
2019-04-105810-903-08234.90 ppb
2019-04-105810-904-08525.00 ppb
2019-04-105810-905-09167.70 ppb
2019-04-105810-906-11174.00 ppb
2019-04-105810-907-11413.50 ppb
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