Trichloroacetic acid
City of Anaheim
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.
287
Samples
0
Samples exceeding legal limit (MCL)
222
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 4.98 ppb | 51 | 50 | ND - 7.80 ppb |
| 2015 | 4.61 ppb | 50 | 49 | ND - 14.0 ppb |
| 2016 | 4.91 ppb | 52 | 52 | 1.90 ppb - 10.00 ppb |
| 2017 | 1.88 ppb | 36 | 24 | ND - 5.10 ppb |
| 2018 | 3.88 ppb | 50 | 36 | ND - 16.0 ppb |
| 2019 | 0.369 ppb | 48 | 11 | ND - 2.00 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 |
|---|---|---|
| 2014-03-03 | 9590-055-0825 | 3.10 ppb |
| 2014-03-03 | 9590-801-0845 | 3.60 ppb |
| 2014-03-03 | 9590-802-0808 | 6.50 ppb |
| 2014-03-03 | 9590-803-0745 | 5.90 ppb |
| 2014-03-03 | 9590-804-1049 | 3.90 ppb |
| 2014-03-03 | 9590-805-1327 | 7.00 ppb |
| 2014-03-03 | 9590-806-0934 | 6.60 ppb |
| 2014-03-03 | 9590-807-1259 | 6.80 ppb |
| 2014-03-03 | 9590-808-1237 | 7.10 ppb |
| 2014-03-03 | 9590-809-0822 | 4.50 ppb |
| 2014-03-03 | 9590-810-0958 | 5.80 ppb |
| 2014-03-03 | 9590-811-0915 | 7.10 ppb |
| 2014-03-03 | 9590-812-0858 | 7.10 ppb |
| 2014-06-03 | 9590-055-1205 | 4.40 ppb |
| 2014-06-03 | 9590-801-1147 | 5.00 ppb |
| 2014-06-03 | 9590-802-0755 | 5.70 ppb |
| 2014-06-03 | 9590-803-0729 | 5.20 ppb |
| 2014-06-03 | 9590-804-1245 | 4.40 ppb |
| 2014-06-03 | 9590-805-1215 | 5.60 ppb |
| 2014-06-03 | 9590-806-1020 | 5.40 ppb |
| 2014-06-03 | 9590-807-1145 | 5.50 ppb |
| 2014-06-03 | 9590-808-1125 | 7.10 ppb |
| 2014-06-03 | 9590-809-0840 | 4.60 ppb |
| 2014-06-03 | 9590-810-1045 | 5.70 ppb |
| 2014-06-03 | 9590-811-0940 | 5.60 ppb |
| 2014-06-03 | 9590-812-0910 | 5.30 ppb |
| 2014-09-23 | 9590-055-0755 | 3.90 ppb |
| 2014-09-23 | 9590-801-1404 | ND |
| 2014-09-23 | 9590-802-1440 | 7.70 ppb |
| 2014-09-23 | 9590-803-1454 | 6.50 ppb |
| 2014-09-23 | 9590-804-1410 | 6.70 ppb |
| 2014-09-23 | 9590-805-1340 | 6.30 ppb |
| 2014-09-23 | 9590-806-1110 | 7.80 ppb |
| 2014-09-23 | 9590-807-1310 | 7.10 ppb |
| 2014-09-23 | 9590-808-1242 | 7.30 ppb |
| 2014-09-23 | 9590-809-0940 | 6.50 ppb |
| 2014-09-23 | 9590-810-1218 | 7.20 ppb |
| 2014-09-23 | 9590-811-1040 | 6.60 ppb |
| 2014-09-23 | 9590-812-1010 | 6.10 ppb |
| 2014-12-09 | 9590-801-1123 | 2.10 ppb |
| 2014-12-09 | 9590-802-1259 | 3.10 ppb |
| 2014-12-09 | 9590-803-1237 | 2.10 ppb |
| 2014-12-09 | 9590-804-1318 | 2.10 ppb |
| 2014-12-09 | 9590-805-1248 | 2.60 ppb |
| 2014-12-09 | 9590-806-1118 | 2.40 ppb |
| 2014-12-09 | 9590-807-1230 | 3.30 ppb |
| 2014-12-09 | 9590-808-1208 | 3.20 ppb |
| 2014-12-09 | 9590-809-1005 | 1.90 ppb |
| 2014-12-09 | 9590-810-1143 | 2.50 ppb |
| 2014-12-09 | 9590-811-1050 | 2.00 ppb |
| 2014-12-09 | 9590-812-1028 | 2.50 ppb |
| 2015-03-03 | 9590-801-1134 | 2.60 ppb |
| 2015-03-03 | 9590-802-1242 | 2.60 ppb |
| 2015-03-03 | 9590-803-1229 | 2.30 ppb |
| 2015-03-03 | 9590-804-1009 | 2.50 ppb |
| 2015-03-03 | 9590-805-1435 | 2.60 ppb |
| 2015-03-03 | 9590-806-1256 | 2.30 ppb |
| 2015-03-03 | 9590-807-1417 | 2.60 ppb |
| 2015-03-03 | 9590-808-1401 | 2.80 ppb |
| 2015-03-03 | 9590-809-1153 | 2.80 ppb |
| 2015-03-03 | 9590-810-1337 | 3.00 ppb |
| 2015-03-03 | 9590-811-1235 | 2.60 ppb |
| 2015-03-03 | 9590-812-1217 | 2.70 ppb |
| 2015-06-02 | 9590-801-1040 | 3.40 ppb |
| 2015-06-02 | 9590-802-1115 | 4.80 ppb |
| 2015-06-02 | 9590-803-1134 | 4.00 ppb |
| 2015-06-02 | 9590-804-1138 | 3.70 ppb |
| 2015-06-02 | 9590-805-1118 | 5.70 ppb |
| 2015-06-02 | 9590-806-0944 | 5.40 ppb |
| 2015-06-02 | 9590-807-1054 | 4.10 ppb |
| 2015-06-02 | 9590-808-1035 | 5.60 ppb |
| 2015-06-02 | 9590-809-0852 | 4.90 ppb |
| 2015-06-02 | 9590-810-1015 | 4.20 ppb |
| 2015-06-02 | 9590-811-0928 | 5.50 ppb |
| 2015-06-02 | 9590-812-0912 | 5.70 ppb |
| 2015-09-01 | 9590-055-0923 | 5.30 ppb |
| 2015-09-01 | 9590-801-1151 | ND |
| 2015-09-01 | 9590-802-1401 | 8.70 ppb |
| 2015-09-01 | 9590-803-1424 | 6.70 ppb |
| 2015-09-01 | 9590-804-1400 | 2.90 ppb |
| 2015-09-01 | 9590-805-1328 | 7.10 ppb |
| 2015-09-01 | 9590-806-1116 | 7.50 ppb |
| 2015-09-01 | 9590-807-1255 | 8.60 ppb |
| 2015-09-01 | 9590-808-1232 | 14.0 ppb |
| 2015-09-01 | 9590-809-0916 | 4.60 ppb |
| 2015-09-01 | 9590-810-1202 | 7.60 ppb |
| 2015-09-01 | 9590-811-1022 | 6.70 ppb |
| 2015-09-01 | 9590-812-0958 | 6.30 ppb |
| 2015-12-01 | 9590-055-0744 | 2.20 ppb |
| 2015-12-01 | 9590-801-1329 | 2.60 ppb |
| 2015-12-01 | 9590-802-1346 | 5.20 ppb |
| 2015-12-01 | 9590-803-1529 | 4.80 ppb |
| 2015-12-01 | 9590-804-1354 | 2.70 ppb |
| 2015-12-01 | 9590-805-1310 | 5.00 ppb |
| 2015-12-01 | 9590-806-1130 | 4.60 ppb |
| 2015-12-01 | 9590-807-1245 | 5.10 ppb |
| 2015-12-01 | 9590-808-1224 | 5.90 ppb |
| 2015-12-01 | 9590-809-1014 | 3.10 ppb |
| 2015-12-01 | 9590-810-1152 | 4.90 ppb |
| 2015-12-01 | 9590-811-1104 | 5.00 ppb |
| 2015-12-01 | 9590-812-1042 | 4.80 ppb |
| 2016-03-01 | 9590-055-0821 | 3.00 ppb |
| 2016-03-01 | 9590-801-1150 | 3.80 ppb |
| 2016-03-01 | 9590-802-1120 | 6.70 ppb |
| 2016-03-01 | 9590-803-1055 | 6.30 ppb |
| 2016-03-01 | 9590-804-1024 | 3.70 ppb |
| 2016-03-01 | 9590-805-1342 | 6.80 ppb |
| 2016-03-01 | 9590-806-1334 | 6.40 ppb |
| 2016-03-01 | 9590-807-1312 | 7.10 ppb |
| 2016-03-01 | 9590-808-1246 | 7.00 ppb |
| 2016-03-01 | 9590-809-1220 | 4.50 ppb |
| 2016-03-01 | 9590-810-1356 | 6.90 ppb |
| 2016-03-01 | 9590-811-1310 | 5.60 ppb |
| 2016-03-01 | 9590-812-1243 | 4.90 ppb |
| 2016-06-07 | 9590-055-0947 | 2.60 ppb |
| 2016-06-07 | 9590-801-1347 | 4.20 ppb |
| 2016-06-07 | 9590-802-1454 | 4.50 ppb |
| 2016-06-07 | 9590-803-1624 | 3.70 ppb |
| 2016-06-07 | 9590-804-1250 | 3.00 ppb |
| 2016-06-07 | 9590-805-1210 | 3.70 ppb |
| 2016-06-07 | 9590-806-1010 | 6.10 ppb |
| 2016-06-07 | 9590-807-1134 | 5.70 ppb |
| 2016-06-07 | 9590-808-1110 | 5.30 ppb |
| 2016-06-07 | 9590-809-0850 | 3.80 ppb |
| 2016-06-07 | 9590-810-1040 | 5.90 ppb |
| 2016-06-07 | 9590-811-0948 | 4.60 ppb |
| 2016-06-07 | 9590-812-0918 | 6.50 ppb |
| 2016-09-06 | 9590-055-1415 | 4.20 ppb |
| 2016-09-06 | 9590-801-1105 | 4.80 ppb |
| 2016-09-06 | 9590-802-1028 | 7.10 ppb |
| 2016-09-06 | 9590-803-1000 | 4.80 ppb |
| 2016-09-06 | 9590-804-1108 | 5.60 ppb |
| 2016-09-06 | 9590-805-1436 | 5.20 ppb |
| 2016-09-06 | 9590-806-1350 | 10.00 ppb |
| 2016-09-06 | 9590-807-1427 | 7.10 ppb |
| 2016-09-06 | 9590-808-1415 | 6.20 ppb |
| 2016-09-06 | 9590-809-1257 | 6.50 ppb |
| 2016-09-06 | 9590-810-1405 | 5.40 ppb |
| 2016-09-06 | 9590-811-1333 | 7.20 ppb |
| 2016-09-06 | 9590-812-1321 | 6.20 ppb |
| 2016-12-06 | 9590-055-0825 | 1.90 ppb |
| 2016-12-06 | 9590-801-1038 | 2.40 ppb |
| 2016-12-06 | 9590-802-0950 | 3.60 ppb |
| 2016-12-06 | 9590-803-0928 | 2.40 ppb |
| 2016-12-06 | 9590-804-1438 | 2.50 ppb |
| 2016-12-06 | 9590-805-1132 | 2.70 ppb |
| 2016-12-06 | 9590-806-1324 | 3.60 ppb |
| 2016-12-06 | 9590-807-1150 | 3.40 ppb |
| 2016-12-06 | 9590-808-1119 | 3.70 ppb |
| 2016-12-06 | 9590-809-1347 | 3.20 ppb |
| 2016-12-06 | 9590-810-1408 | 5.10 ppb |
| 2016-12-06 | 9590-811-1305 | 4.20 ppb |
| 2016-12-06 | 9590-812-1236 | 4.20 ppb |
| 2017-03-15 | 9590-801-1134 | 1.80 ppb |
| 2017-03-15 | 9590-802-1152 | 4.00 ppb |
| 2017-03-15 | 9590-803-1023 | 3.40 ppb |
| 2017-03-15 | 9590-804-1107 | 1.90 ppb |
| 2017-03-15 | 9590-805-1005 | 2.10 ppb |
| 2017-03-15 | 9590-806-1158 | 5.10 ppb |
| 2017-03-15 | 9590-807-1042 | 4.30 ppb |
| 2017-03-15 | 9590-808-1102 | 4.70 ppb |
| 2017-03-15 | 9590-809-1048 | 3.30 ppb |
| 2017-03-15 | 9590-810-1010 | 4.60 ppb |
| 2017-03-15 | 9590-811-1144 | 4.30 ppb |
| 2017-03-15 | 9590-812-1126 | 4.50 ppb |
| 2017-09-13 | 9590-801-0736 | 1.10 ppb |
| 2017-09-13 | 9590-802-0811 | 1.80 ppb |
| 2017-09-13 | 9590-803-1010 | 1.40 ppb |
| 2017-09-13 | 9590-804-0811 | 2.00 ppb |
| 2017-09-13 | 9590-805-0926 | 2.20 ppb |
| 2017-09-13 | 9590-806-0910 | 2.40 ppb |
| 2017-09-13 | 9590-807-0853 | 2.30 ppb |
| 2017-09-13 | 9590-808-0835 | 2.30 ppb |
| 2017-09-13 | 9590-809-0805 | 1.80 ppb |
| 2017-09-13 | 9590-810-0945 | 1.90 ppb |
| 2017-09-13 | 9590-811-0845 | 2.30 ppb |
| 2017-09-13 | 9590-812-0828 | 2.00 ppb |
| 2017-12-05 | 9590-801-1248 | ND |
| 2017-12-05 | 9590-802-0956 | ND |
| 2017-12-05 | 9590-803-0942 | ND |
| 2017-12-05 | 9590-804-1210 | ND |
| 2017-12-05 | 9590-805-1010 | ND |
| 2017-12-05 | 9590-806-1110 | ND |
| 2017-12-05 | 9590-807-1040 | ND |
| 2017-12-05 | 9590-808-1025 | ND |
| 2017-12-05 | 9590-809-1150 | ND |
| 2017-12-05 | 9590-810-1055 | ND |
| 2017-12-05 | 9590-811-1125 | ND |
| 2017-12-05 | 9590-812-1136 | ND |
| 2018-03-07 | 9590-801-0810 | 3.00 ppb |
| 2018-03-07 | 9590-802-0834 | 4.90 ppb |
| 2018-03-07 | 9590-803-0955 | 4.90 ppb |
| 2018-03-07 | 9590-804-0748 | 3.90 ppb |
| 2018-03-07 | 9590-805-0923 | 5.20 ppb |
| 2018-03-07 | 9590-806-0840 | 4.80 ppb |
| 2018-03-07 | 9590-807-0909 | 5.30 ppb |
| 2018-03-07 | 9590-808-0851 | 5.40 ppb |
| 2018-03-07 | 9590-809-0940 | 5.10 ppb |
| 2018-03-07 | 9590-810-0820 | 5.80 ppb |
| 2018-03-07 | 9590-811-0900 | 4.00 ppb |
| 2018-03-07 | 9590-812-0920 | 4.00 ppb |
| 2018-06-05 | 9588-055-0759 | 2.10 ppb |
| 2018-06-05 | 9588-801-1155 | ND |
| 2018-06-05 | 9588-802-1326 | 3.50 ppb |
| 2018-06-05 | 9588-803-1251 | 2.90 ppb |
| 2018-06-05 | 9588-804-1328 | 2.50 ppb |
| 2018-06-05 | 9588-805-1314 | 3.30 ppb |
| 2018-06-05 | 9588-806-1140 | 3.70 ppb |
| 2018-06-05 | 9588-807-1240 | 3.90 ppb |
| 2018-06-05 | 9588-808-1258 | 3.70 ppb |
| 2018-06-05 | 9588-809-1032 | 2.70 ppb |
| 2018-06-05 | 9588-810-1200 | 3.90 ppb |
| 2018-06-05 | 9588-811-1118 | 3.20 ppb |
| 2018-06-05 | 9588-812-1100 | 3.10 ppb |
| 2018-09-11 | 9588-055-1020 | 5.20 ppb |
| 2018-09-11 | 9588-801-1255 | ND |
| 2018-09-11 | 9588-802-1200 | 7.80 ppb |
| 2018-09-11 | 9588-803-1223 | 6.60 ppb |
| 2018-09-11 | 9588-804-1312 | 6.10 ppb |
| 2018-09-11 | 9588-805-1248 | 15.0 ppb |
| 2018-09-11 | 9588-806-1120 | 16.0 ppb |
| 2018-09-11 | 9588-807-1228 | 6.60 ppb |
| 2018-09-11 | 9588-808-1204 | 7.90 ppb |
| 2018-09-11 | 9588-809-1022 | 5.60 ppb |
| 2018-09-11 | 9588-810-1140 | 6.30 ppb |
| 2018-09-11 | 9588-811-1100 | 8.80 ppb |
| 2018-09-11 | 9588-812-1042 | 7.30 ppb |
| 2018-12-11 | 9588-801-1240 | ND |
| 2018-12-11 | 9588-802-1115 | ND |
| 2018-12-11 | 9588-803-1055 | ND |
| 2018-12-11 | 9588-804-1218 | ND |
| 2018-12-11 | 9588-805-1135 | ND |
| 2018-12-11 | 9588-806-1108 | ND |
| 2018-12-11 | 9588-807-1153 | ND |
| 2018-12-11 | 9588-808-1208 | ND |
| 2018-12-11 | 9588-809-1125 | ND |
| 2018-12-11 | 9588-810-1235 | ND |
| 2018-12-11 | 9588-811-1152 | ND |
| 2018-12-11 | 9588-812-1140 | ND |
| 2019-03-05 | 9588-801-1025 | ND |
| 2019-03-05 | 9588-802-0910 | 2.00 ppb |
| 2019-03-05 | 9588-803-0850 | 1.60 ppb |
| 2019-03-05 | 9588-804-0850 | 1.40 ppb |
| 2019-03-05 | 9588-805-0930 | 1.70 ppb |
| 2019-03-05 | 9588-806-0930 | 1.70 ppb |
| 2019-03-05 | 9588-807-1000 | 1.80 ppb |
| 2019-03-05 | 9588-808-0945 | 1.60 ppb |
| 2019-03-05 | 9588-809-0940 | 1.30 ppb |
| 2019-03-05 | 9588-810-0914 | 1.50 ppb |
| 2019-03-05 | 9588-811-1020 | 1.70 ppb |
| 2019-03-05 | 9588-812-1008 | 1.40 ppb |
| 2019-06-04 | 9588-801-1126 | ND |
| 2019-06-04 | 9588-802-1218 | ND |
| 2019-06-04 | 9588-803-1159 | ND |
| 2019-06-04 | 9588-804-1105 | ND |
| 2019-06-04 | 9588-805-1038 | ND |
| 2019-06-04 | 9588-806-0952 | ND |
| 2019-06-04 | 9588-807-1025 | ND |
| 2019-06-04 | 9588-808-1010 | ND |
| 2019-06-04 | 9588-809-0908 | ND |
| 2019-06-04 | 9588-810-1052 | ND |
| 2019-06-04 | 9588-811-0928 | ND |
| 2019-06-04 | 9588-812-0938 | ND |
| 2019-09-10 | 9588-801-1008 | ND |
| 2019-09-10 | 9588-802-0915 | ND |
| 2019-09-10 | 9588-803-0840 | ND |
| 2019-09-10 | 9588-804-1136 | ND |
| 2019-09-10 | 9588-805-1120 | ND |
| 2019-09-10 | 9588-806-1004 | ND |
| 2019-09-10 | 9588-807-1104 | ND |
| 2019-09-10 | 9588-808-1044 | ND |
| 2019-09-10 | 9588-809-0902 | ND |
| 2019-09-10 | 9588-810-1022 | ND |
| 2019-09-10 | 9588-811-0944 | ND |
| 2019-09-10 | 9588-812-0924 | ND |
| 2019-12-03 | 9588-801-1155 | ND |
| 2019-12-03 | 9588-802-1043 | ND |
| 2019-12-03 | 9588-803-1025 | ND |
| 2019-12-03 | 9588-804-1115 | ND |
| 2019-12-03 | 9588-805-1143 | ND |
| 2019-12-03 | 9588-806-0853 | ND |
| 2019-12-03 | 9588-807-0953 | ND |
| 2019-12-03 | 9588-808-0940 | ND |
| 2019-12-03 | 9588-809-0755 | ND |
| 2019-12-03 | 9588-810-0918 | ND |
| 2019-12-03 | 9588-811-0840 | ND |
| 2019-12-03 | 9588-812-0815 | ND |