Trichloroacetic acid
Irvine Ranch 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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 2.33 ppb | 48 | 33 | ND - 5.40 ppb |
2015 | 0.981 ppb | 36 | 15 | ND - 4.10 ppb |
2016 | 0.737 ppb | 48 | 20 | ND - 3.90 ppb |
2017 | 0.970 ppb | 48 | 22 | ND - 4.40 ppb |
2018 | 0.677 ppb | 48 | 22 | ND - 3.27 ppb |
2019 | 0.994 ppb | 48 | 16 | ND - 11.6 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 |
---|---|---|
2014-01-06 | 4317-805-0950 | 3.40 ppb |
2014-01-06 | 4317-806-1257 | 2.80 ppb |
2014-01-06 | 4317-811-1336 | ND |
2014-01-06 | 4317-812-1306 | 3.20 ppb |
2014-01-07 | 4317-801-0858 | 1.30 ppb |
2014-01-07 | 4317-802-0849 | 2.80 ppb |
2014-01-07 | 4317-803-1235 | ND |
2014-01-07 | 4317-804-1115 | ND |
2014-01-07 | 4317-807-1051 | 1.10 ppb |
2014-01-07 | 4317-808-0827 | 2.60 ppb |
2014-01-07 | 4317-809-1328 | 2.60 ppb |
2014-01-07 | 4317-810-1116 | 2.00 ppb |
2014-04-07 | 4317-805-1134 | 4.60 ppb |
2014-04-07 | 4317-806-1151 | 4.60 ppb |
2014-04-07 | 4317-811-1211 | ND |
2014-04-07 | 4317-812-1131 | 3.50 ppb |
2014-04-08 | 4317-801-0941 | 3.50 ppb |
2014-04-08 | 4317-802-0928 | 5.00 ppb |
2014-04-08 | 4317-803-1036 | 1.10 ppb |
2014-04-08 | 4317-804-1109 | 4.20 ppb |
2014-04-08 | 4317-807-1110 | 4.50 ppb |
2014-04-08 | 4317-808-0853 | 4.00 ppb |
2014-04-08 | 4317-809-1216 | 1.50 ppb |
2014-04-08 | 4317-810-1147 | 4.70 ppb |
2014-07-07 | 4317-805-0825 | 4.60 ppb |
2014-07-07 | 4317-806-1332 | 4.40 ppb |
2014-07-07 | 4317-809-1120 | 4.40 ppb |
2014-07-07 | 4317-811-1357 | ND |
2014-07-07 | 4317-812-1325 | 3.90 ppb |
2014-07-08 | 4317-801-1042 | 3.40 ppb |
2014-07-08 | 4317-802-0828 | 4.60 ppb |
2014-07-08 | 4317-803-1348 | 4.00 ppb |
2014-07-08 | 4317-804-0928 | 3.40 ppb |
2014-07-08 | 4317-807-1401 | 2.70 ppb |
2014-07-08 | 4317-808-0751 | 5.20 ppb |
2014-07-09 | 4317-810-1330 | 5.40 ppb |
2014-10-06 | 4317-805-1200 | ND |
2014-10-06 | 4317-806-1402 | 1.30 ppb |
2014-10-06 | 4317-809-1416 | ND |
2014-10-06 | 4317-811-0938 | ND |
2014-10-06 | 4317-812-1351 | 1.30 ppb |
2014-10-07 | 4317-801-0913 | ND |
2014-10-07 | 4317-802-1136 | ND |
2014-10-07 | 4317-803-0923 | ND |
2014-10-07 | 4317-804-1154 | ND |
2014-10-07 | 4317-807-1000 | ND |
2014-10-07 | 4317-808-1102 | ND |
2014-10-07 | 4317-810-1102 | ND |
2015-01-05 | 4317-805-0842 | ND |
2015-01-05 | 4317-806-1126 | 1.10 ppb |
2015-01-05 | 4317-809-1246 | ND |
2015-01-05 | 4317-811-1008 | ND |
2015-01-05 | 4317-812-1117 | 1.20 ppb |
2015-01-06 | 4317-801-0910 | 2.00 ppb |
2015-01-06 | 4317-803-1040 | ND |
2015-01-06 | 4317-807-0956 | ND |
2015-01-06 | 4317-810-1101 | ND |
2015-01-07 | 4317-802-0832 | ND |
2015-01-07 | 4317-804-0950 | ND |
2015-01-07 | 4317-808-0808 | ND |
2015-07-06 | 4317-802-1121 | ND |
2015-07-06 | 4317-804-1328 | 4.00 ppb |
2015-07-06 | 4317-805-0815 | 4.10 ppb |
2015-07-06 | 4317-806-1129 | 2.80 ppb |
2015-07-06 | 4317-808-1040 | 2.20 ppb |
2015-07-06 | 4317-809-1353 | 1.50 ppb |
2015-07-06 | 4317-811-0930 | ND |
2015-07-06 | 4317-812-1120 | 3.20 ppb |
2015-07-07 | 4317-801-0920 | ND |
2015-07-07 | 4317-803-1404 | ND |
2015-07-07 | 4317-807-1002 | ND |
2015-07-07 | 4317-810-1109 | ND |
2015-10-05 | 4317-805-0902 | 1.90 ppb |
2015-10-05 | 4317-806-1058 | 3.50 ppb |
2015-10-05 | 4317-809-1352 | 2.10 ppb |
2015-10-05 | 4317-811-1200 | ND |
2015-10-05 | 4317-812-1049 | 2.50 ppb |
2015-10-06 | 4317-801-0847 | 1.20 ppb |
2015-10-06 | 4317-803-1040 | ND |
2015-10-06 | 4317-807-1252 | ND |
2015-10-06 | 4317-810-1103 | ND |
2015-10-08 | 4317-802-0748 | ND |
2015-10-08 | 4317-804-0800 | 2.00 ppb |
2015-10-08 | 4317-808-0738 | ND |
2016-01-04 | 4317-802-0939 | ND |
2016-01-04 | 4317-804-1106 | ND |
2016-01-04 | 4317-806-1150 | ND |
2016-01-04 | 4317-808-0904 | ND |
2016-01-04 | 4317-809-1041 | ND |
2016-01-04 | 4317-811-1148 | ND |
2016-01-04 | 4317-812-1137 | ND |
2016-01-05 | 4317-801-0743 | ND |
2016-01-05 | 4317-810-1112 | ND |
2016-01-06 | 4317-803-0832 | ND |
2016-01-20 | 4317-805-1048 | ND |
2016-01-20 | 4317-807-1120 | ND |
2016-04-04 | 4317-803-1041 | ND |
2016-04-04 | 4317-806-1218 | 1.70 ppb |
2016-04-04 | 4317-809-0838 | ND |
2016-04-04 | 4317-811-0925 | ND |
2016-04-04 | 4317-812-1204 | 1.40 ppb |
2016-04-05 | 4317-801-1238 | ND |
2016-04-05 | 4317-802-0840 | ND |
2016-04-05 | 4317-804-1400 | ND |
2016-04-05 | 4317-805-1240 | ND |
2016-04-05 | 4317-807-0955 | ND |
2016-04-05 | 4317-808-0758 | ND |
2016-04-05 | 4317-810-1105 | ND |
2016-07-05 | 4317-803-1125 | ND |
2016-07-05 | 4317-805-1312 | 2.40 ppb |
2016-07-05 | 4317-809-1319 | 2.60 ppb |
2016-07-05 | 4317-811-1004 | ND |
2016-07-06 | 4317-802-1306 | 2.00 ppb |
2016-07-06 | 4317-804-1335 | 1.90 ppb |
2016-07-06 | 4317-806-1332 | 3.70 ppb |
2016-07-06 | 4317-807-1052 | 1.40 ppb |
2016-07-06 | 4317-808-1239 | 1.70 ppb |
2016-07-06 | 4317-810-1122 | 1.10 ppb |
2016-07-06 | 4317-812-1312 | 3.90 ppb |
2016-07-07 | 4317-801-0826 | 1.40 ppb |
2016-10-03 | 4317-802-0954 | ND |
2016-10-03 | 4317-803-1005 | 1.03 ppb |
2016-10-03 | 4317-804-1218 | 1.05 ppb |
2016-10-03 | 4317-806-1352 | 1.82 ppb |
2016-10-03 | 4317-807-0926 | ND |
2016-10-03 | 4317-808-0923 | ND |
2016-10-03 | 4317-809-1117 | 1.14 ppb |
2016-10-03 | 4317-810-1020 | ND |
2016-10-03 | 4317-811-0931 | 1.09 ppb |
2016-10-03 | 4317-812-1337 | 1.73 ppb |
2016-10-04 | 4317-801-1210 | 1.20 ppb |
2016-10-04 | 4317-805-1335 | 1.10 ppb |
2017-01-03 | 4317-802-1255 | 1.62 ppb |
2017-01-03 | 4317-803-0900 | ND |
2017-01-03 | 4317-804-1445 | 2.47 ppb |
2017-01-03 | 4317-805-1226 | 1.43 ppb |
2017-01-03 | 4317-806-1059 | 2.75 ppb |
2017-01-03 | 4317-807-1010 | ND |
2017-01-03 | 4317-808-1150 | ND |
2017-01-03 | 4317-809-1030 | ND |
2017-01-03 | 4317-810-1046 | ND |
2017-01-03 | 4317-811-0951 | ND |
2017-01-03 | 4317-812-1042 | 2.15 ppb |
2017-01-04 | 4317-801-0959 | ND |
2017-04-03 | 4317-802-1005 | ND |
2017-04-03 | 4317-803-1148 | 1.82 ppb |
2017-04-03 | 4317-804-1156 | 4.40 ppb |
2017-04-03 | 4317-806-1050 | 1.89 ppb |
2017-04-03 | 4317-807-1030 | ND |
2017-04-03 | 4317-808-0830 | 1.45 ppb |
2017-04-03 | 4317-809-1110 | 1.29 ppb |
2017-04-03 | 4317-810-1150 | ND |
2017-04-03 | 4317-811-0913 | ND |
2017-04-03 | 4317-812-1420 | 2.45 ppb |
2017-04-04 | 4317-805-0919 | 1.01 ppb |
2017-04-05 | 4317-801-0951 | 3.90 ppb |
2017-07-05 | 4317-801-0932 | 2.38 ppb |
2017-07-05 | 4317-803-1006 | ND |
2017-07-05 | 4317-804-1300 | ND |
2017-07-05 | 4317-805-1320 | ND |
2017-07-05 | 4317-806-1223 | 2.66 ppb |
2017-07-05 | 4317-807-0835 | ND |
2017-07-05 | 4317-808-0905 | ND |
2017-07-05 | 4317-809-1416 | ND |
2017-07-05 | 4317-810-0912 | ND |
2017-07-05 | 4317-812-1208 | 2.91 ppb |
2017-07-06 | 4317-802-1020 | 1.31 ppb |
2017-07-06 | 4317-811-0910 | 1.05 ppb |
2017-10-02 | 4317-802-1048 | ND |
2017-10-02 | 4317-803-1025 | ND |
2017-10-02 | 4317-804-1251 | 1.96 ppb |
2017-10-02 | 4317-808-1006 | ND |
2017-10-02 | 4317-809-1226 | ND |
2017-10-02 | 4317-811-0935 | ND |
2017-10-03 | 4317-806-1052 | ND |
2017-10-03 | 4317-807-1119 | ND |
2017-10-03 | 4317-810-1155 | 1.03 ppb |
2017-10-03 | 4317-812-1028 | ND |
2017-11-14 | 4317-801-1015 | 2.91 ppb |
2017-11-14 | 4317-805-1412 | 1.71 ppb |
2018-01-08 | 4317-801-1040 | 1.24 ppb |
2018-01-08 | 4317-802-1145 | ND |
2018-01-08 | 4317-804-1435 | 2.34 ppb |
2018-01-08 | 4317-806-0910 | 1.04 ppb |
2018-01-08 | 4317-807-0933 | ND |
2018-01-08 | 4317-808-1004 | ND |
2018-01-08 | 4317-810-1007 | ND |
2018-01-08 | 4317-812-0853 | 1.21 ppb |
2018-01-09 | 4317-803-0955 | ND |
2018-01-09 | 4317-805-1020 | ND |
2018-01-09 | 4317-809-1241 | 1.000 ppb |
2018-01-09 | 4317-811-0959 | 1.69 ppb |
2018-04-09 | 4317-805-1214 | ND |
2018-04-09 | 4317-806-1253 | 1.12 ppb |
2018-04-09 | 4317-811-1027 | ND |
2018-04-09 | 4317-812-1228 | 1.09 ppb |
2018-04-10 | 4317-801-1040 | ND |
2018-04-10 | 4317-802-0930 | ND |
2018-04-10 | 4317-803-0929 | ND |
2018-04-10 | 4317-804-1217 | ND |
2018-04-10 | 4317-807-1413 | ND |
2018-04-10 | 4317-808-0833 | ND |
2018-04-10 | 4317-809-0903 | 1.01 ppb |
2018-04-10 | 4317-810-1344 | ND |
2018-07-09 | 4317-803-1010 | ND |
2018-07-09 | 4317-805-1010 | 1.39 ppb |
2018-07-09 | 4317-807-1353 | ND |
2018-07-09 | 4317-809-0922 | 1.36 ppb |
2018-07-09 | 4317-810-1427 | ND |
2018-07-09 | 4317-811-0846 | ND |
2018-07-10 | 4317-801-1023 | 2.35 ppb |
2018-07-10 | 4317-802-1010 | ND |
2018-07-10 | 4317-804-1030 | 3.27 ppb |
2018-07-10 | 4317-806-1035 | 1.80 ppb |
2018-07-10 | 4317-808-0950 | 1.29 ppb |
2018-07-10 | 4317-812-1028 | 1.81 ppb |
2018-12-10 | 4317-801-1207 | 1.87 ppb |
2018-12-10 | 4317-802-1035 | ND |
2018-12-10 | 4317-804-1305 | 1.01 ppb |
2018-12-10 | 4317-805-1355 | 1.16 ppb |
2018-12-10 | 4317-808-0957 | ND |
2018-12-11 | 4317-803-0909 | ND |
2018-12-11 | 4317-806-1052 | ND |
2018-12-11 | 4317-807-0850 | 1.09 ppb |
2018-12-11 | 4317-809-0929 | 1.09 ppb |
2018-12-11 | 4317-810-0925 | ND |
2018-12-11 | 4317-811-0911 | ND |
2018-12-11 | 4317-812-1030 | 1.27 ppb |
2019-03-11 | 4317-802-1309 | 1.81 ppb |
2019-03-11 | 4317-803-0938 | ND |
2019-03-11 | 4317-804-1321 | 1.83 ppb |
2019-03-11 | 4317-805-1309 | ND |
2019-03-11 | 4317-806-1334 | ND |
2019-03-11 | 4317-807-1036 | ND |
2019-03-11 | 4317-808-1257 | 1.66 ppb |
2019-03-11 | 4317-809-1220 | ND |
2019-03-11 | 4317-810-1112 | 1.01 ppb |
2019-03-11 | 4317-811-0822 | ND |
2019-03-11 | 4317-812-1322 | ND |
2019-03-12 | 4317-801-1211 | 1.52 ppb |
2019-04-08 | 4317-802-1134 | ND |
2019-04-08 | 4317-803-1008 | ND |
2019-04-08 | 4317-804-1030 | 1.64 ppb |
2019-04-08 | 4317-806-1306 | ND |
2019-04-08 | 4317-807-1035 | ND |
2019-04-08 | 4317-808-1048 | 1.07 ppb |
2019-04-08 | 4317-809-1224 | ND |
2019-04-08 | 4317-810-1137 | 1.56 ppb |
2019-04-08 | 4317-811-0905 | ND |
2019-04-08 | 4317-812-1247 | ND |
2019-04-09 | 4317-801-0958 | 4.25 ppb |
2019-04-09 | 4317-805-1120 | ND |
2019-07-08 | 4317-803-1245 | ND |
2019-07-08 | 4317-805-1013 | ND |
2019-07-08 | 4317-806-1427 | ND |
2019-07-08 | 4317-807-1150 | ND |
2019-07-08 | 4317-809-1219 | ND |
2019-07-08 | 4317-810-1235 | ND |
2019-07-08 | 4317-811-1054 | ND |
2019-07-08 | 4317-812-1410 | ND |
2019-07-09 | 4317-801-1224 | 4.40 ppb |
2019-07-09 | 4317-802-1022 | 3.44 ppb |
2019-07-09 | 4317-804-1411 | 11.6 ppb |
2019-07-09 | 4317-808-0907 | 5.06 ppb |
2019-10-07 | 4317-802-1155 | ND |
2019-10-07 | 4317-804-1354 | 1.21 ppb |
2019-10-07 | 4317-806-1235 | ND |
2019-10-07 | 4317-808-1100 | ND |
2019-10-07 | 4317-811-1045 | 1.39 ppb |
2019-10-07 | 4317-812-1214 | ND |
2019-10-08 | 4317-801-1252 | 4.24 ppb |
2019-10-08 | 4317-803-1202 | ND |
2019-10-08 | 4317-807-0917 | ND |
2019-10-08 | 4317-809-0942 | ND |
2019-10-08 | 4317-810-1006 | ND |
2019-10-09 | 4317-805-1014 | ND |