Trichloroacetic acid
Eastern Municipal 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.
394
Samples
0
Samples exceeding legal limit (MCL)
255
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 | 2.67 ppb | 60 | 39 | ND - 7.30 ppb |
| 2015 | 2.84 ppb | 73 | 51 | ND - 11.0 ppb |
| 2016 | 1.98 ppb | 68 | 46 | ND - 5.50 ppb |
| 2017 | 4.77 ppb | 61 | 47 | ND - 28.0 ppb |
| 2018 | 0.917 ppb | 64 | 29 | ND - 4.20 ppb |
| 2019 | 1.76 ppb | 68 | 43 | ND - 12.0 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 |
|---|---|---|
| 2014-01-02 | 4790-081-0000 | ND |
| 2014-01-02 | 4790-104-0000 | ND |
| 2014-01-06 | 4790-063-0750 | ND |
| 2014-02-03 | 4790-063-0740 | 1.40 ppb |
| 2014-02-03 | 4790-081-0725 | ND |
| 2014-03-03 | 4790-063-0800 | ND |
| 2014-03-03 | 4790-081-0818 | ND |
| 2014-03-17 | 4790-101-1422 | 3.10 ppb |
| 2014-03-17 | 4790-102-1422 | 3.00 ppb |
| 2014-03-18 | 4790-103-0849 | 2.00 ppb |
| 2014-03-18 | 4790-104-1055 | ND |
| 2014-03-18 | 4790-107-1325 | ND |
| 2014-03-18 | 4790-108-1504 | 1.30 ppb |
| 2014-03-18 | 4790-109-1150 | ND |
| 2014-03-18 | 4790-111-1420 | ND |
| 2014-03-18 | 4790-113-0944 | ND |
| 2014-03-19 | 4790-106-1420 | 1.80 ppb |
| 2014-03-19 | 4790-110-1420 | 1.70 ppb |
| 2014-03-19 | 4790-112-1420 | 1.60 ppb |
| 2014-04-01 | 4790-063-0945 | 2.50 ppb |
| 2014-04-01 | 4790-081-0807 | ND |
| 2014-05-05 | 4790-063-0715 | 3.40 ppb |
| 2014-05-05 | 4790-081-0800 | ND |
| 2014-06-02 | 4790-063-0810 | 3.10 ppb |
| 2014-06-02 | 4790-081-0830 | ND |
| 2014-06-06 | 4790-101-0929 | 1.70 ppb |
| 2014-06-06 | 4790-102-0838 | 1.30 ppb |
| 2014-06-06 | 4790-111-1018 | ND |
| 2014-06-17 | 4790-113-0000 | ND |
| 2014-06-18 | 4790-112-0000 | 3.40 ppb |
| 2014-06-20 | 4790-106-0000 | 4.70 ppb |
| 2014-06-20 | 4790-108-0000 | 4.00 ppb |
| 2014-07-01 | 4790-063-0820 | 5.00 ppb |
| 2014-07-01 | 4790-081-0823 | ND |
| 2014-08-04 | 4790-063-0755 | 7.30 ppb |
| 2014-08-04 | 4790-081-0830 | 6.60 ppb |
| 2014-08-18 | 4790-071-0900 | ND |
| 2014-09-02 | 4790-063-0705 | 5.40 ppb |
| 2014-09-02 | 4790-104-0833 | 5.60 ppb |
| 2014-09-15 | 4790-101-0759 | 4.70 ppb |
| 2014-09-15 | 4790-102-0759 | 4.70 ppb |
| 2014-09-16 | 4790-104-1100 | 6.50 ppb |
| 2014-09-17 | 4790-103-0859 | 6.50 ppb |
| 2014-09-17 | 4790-107-0859 | 6.40 ppb |
| 2014-09-17 | 4790-109-0859 | ND |
| 2014-09-17 | 4790-111-0859 | 6.20 ppb |
| 2014-09-17 | 4790-112-1016 | 5.00 ppb |
| 2014-09-18 | 4790-110-1037 | ND |
| 2014-10-01 | 4790-063-0826 | 6.80 ppb |
| 2014-10-01 | 4790-081-0956 | 6.60 ppb |
| 2014-12-01 | 4790-063-0730 | 4.60 ppb |
| 2014-12-01 | 4790-081-0915 | 4.10 ppb |
| 2014-12-08 | 4790-101-1039 | 4.60 ppb |
| 2014-12-08 | 4790-102-0927 | 5.20 ppb |
| 2014-12-08 | 4790-111-0824 | 1.70 ppb |
| 2014-12-09 | 4790-104-1039 | 3.70 ppb |
| 2014-12-10 | 4790-106-1328 | 5.40 ppb |
| 2014-12-10 | 4790-112-0933 | 2.70 ppb |
| 2014-12-11 | 4790-103-0815 | 4.70 ppb |
| 2014-12-11 | 4790-110-0854 | ND |
| 2015-01-05 | 4790-063-0735 | 2.70 ppb |
| 2015-01-05 | 4790-081-0800 | 2.90 ppb |
| 2015-02-02 | 4790-063-0740 | 3.00 ppb |
| 2015-02-02 | 4790-081-0830 | 2.50 ppb |
| 2015-03-02 | 4790-063-0735 | ND |
| 2015-03-02 | 4790-081-0928 | ND |
| 2015-03-16 | 4790-101-1048 | 3.40 ppb |
| 2015-03-16 | 4790-102-0916 | 2.50 ppb |
| 2015-03-16 | 4790-111-1234 | ND |
| 2015-03-17 | 4790-103-0955 | 2.00 ppb |
| 2015-03-17 | 4790-104-1250 | 2.30 ppb |
| 2015-03-17 | 4790-109-1153 | ND |
| 2015-03-17 | 4790-113-1027 | ND |
| 2015-03-18 | 4790-106-0842 | ND |
| 2015-03-18 | 4790-108-1409 | ND |
| 2015-03-20 | 4790-107-0000 | ND |
| 2015-03-20 | 4790-110-0000 | ND |
| 2015-03-20 | 4790-112-0000 | ND |
| 2015-04-01 | 4790-063-0000 | 2.30 ppb |
| 2015-04-01 | 4790-081-1500 | 2.90 ppb |
| 2015-05-04 | 4790-063-0745 | 2.80 ppb |
| 2015-05-04 | 4790-081-0838 | 3.20 ppb |
| 2015-06-01 | 4790-063-0725 | 4.00 ppb |
| 2015-06-01 | 4790-081-0802 | 3.90 ppb |
| 2015-06-15 | 4790-101-0959 | 1.50 ppb |
| 2015-06-15 | 4790-102-0959 | 1.50 ppb |
| 2015-06-15 | 4790-108-0959 | 2.10 ppb |
| 2015-06-15 | 4790-111-0959 | ND |
| 2015-06-16 | 4790-106-1011 | 3.50 ppb |
| 2015-06-16 | 4790-112-1011 | 2.80 ppb |
| 2015-06-17 | 4790-104-1110 | 6.20 ppb |
| 2015-06-17 | 4790-107-1110 | ND |
| 2015-06-17 | 4790-109-1110 | ND |
| 2015-06-17 | 4790-113-1110 | ND |
| 2015-06-18 | 4790-103-1240 | 5.00 ppb |
| 2015-06-18 | 4790-110-1240 | ND |
| 2015-07-01 | 4790-063-0900 | 4.70 ppb |
| 2015-07-01 | 4790-081-0755 | 11.0 ppb |
| 2015-08-04 | 4790-063-1015 | 7.50 ppb |
| 2015-08-04 | 4790-071-0830 | ND |
| 2015-08-04 | 4790-081-0820 | 8.50 ppb |
| 2015-09-01 | 4790-063-0816 | 6.60 ppb |
| 2015-09-01 | 4790-081-0746 | 7.70 ppb |
| 2015-09-14 | 4790-101-1026 | 2.80 ppb |
| 2015-09-14 | 4790-102-0835 | 2.80 ppb |
| 2015-09-14 | 4790-103-1435 | 6.90 ppb |
| 2015-09-15 | 4790-104-1020 | 7.40 ppb |
| 2015-09-15 | 4790-107-1350 | 1.60 ppb |
| 2015-09-15 | 4790-108-1443 | 5.10 ppb |
| 2015-09-15 | 4790-109-1208 | ND |
| 2015-09-15 | 4790-111-1418 | 2.20 ppb |
| 2015-09-15 | 4790-113-1125 | ND |
| 2015-09-16 | 4790-106-0904 | 6.60 ppb |
| 2015-09-16 | 4790-112-1255 | 2.10 ppb |
| 2015-09-17 | 4790-110-1347 | ND |
| 2015-10-05 | 4790-063-0738 | 6.60 ppb |
| 2015-10-05 | 4790-081-0805 | 5.90 ppb |
| 2015-11-02 | 4790-063-0740 | 3.80 ppb |
| 2015-11-02 | 4790-081-0832 | 4.70 ppb |
| 2015-12-01 | 4790-063-0716 | 4.00 ppb |
| 2015-12-02 | 4790-081-0842 | 5.40 ppb |
| 2015-12-14 | 4790-104-1205 | 4.90 ppb |
| 2015-12-14 | 4790-107-0903 | 2.20 ppb |
| 2015-12-14 | 4790-109-1015 | ND |
| 2015-12-14 | 4790-113-1040 | ND |
| 2015-12-15 | 4790-101-0850 | 3.90 ppb |
| 2015-12-15 | 4790-102-1210 | 2.60 ppb |
| 2015-12-15 | 4790-111-1444 | 2.60 ppb |
| 2015-12-16 | 4790-106-0926 | 4.60 ppb |
| 2015-12-16 | 4790-108-1437 | 1.90 ppb |
| 2015-12-16 | 4790-112-1333 | 3.20 ppb |
| 2015-12-18 | 4790-103-1418 | 4.70 ppb |
| 2015-12-18 | 4790-110-1418 | ND |
| 2016-01-04 | 4790-063-0900 | 3.00 ppb |
| 2016-01-04 | 4790-081-0845 | 3.20 ppb |
| 2016-02-01 | 4790-063-0800 | 2.50 ppb |
| 2016-03-02 | 4790-063-0756 | 3.30 ppb |
| 2016-03-02 | 4790-081-0835 | 3.50 ppb |
| 2016-03-21 | 4790-101-1120 | 2.80 ppb |
| 2016-03-21 | 4790-102-0858 | 3.10 ppb |
| 2016-03-21 | 4790-111-0811 | 2.40 ppb |
| 2016-03-22 | 4790-104-1155 | 3.80 ppb |
| 2016-03-22 | 4790-113-1322 | 3.60 ppb |
| 2016-03-24 | 4790-103-1405 | 2.90 ppb |
| 2016-03-24 | 4790-110-1319 | ND |
| 2016-04-04 | 4790-063-0805 | 3.80 ppb |
| 2016-04-04 | 4790-081-0848 | 4.00 ppb |
| 2016-05-02 | 4790-063-1020 | 2.70 ppb |
| 2016-05-02 | 4790-081-0745 | 2.70 ppb |
| 2016-06-01 | 4790-063-0756 | 1.40 ppb |
| 2016-06-01 | 4790-081-0809 | 3.60 ppb |
| 2016-06-20 | 4790-101-0854 | 3.90 ppb |
| 2016-06-20 | 4790-102-0715 | 3.70 ppb |
| 2016-06-20 | 4790-111-0634 | ND |
| 2016-06-21 | 4790-104-0900 | 1.80 ppb |
| 2016-06-21 | 4790-107-1326 | ND |
| 2016-06-21 | 4790-108-1401 | 2.90 ppb |
| 2016-06-21 | 4790-109-1047 | ND |
| 2016-06-21 | 4790-113-1125 | ND |
| 2016-06-22 | 4790-103-1154 | 4.30 ppb |
| 2016-06-22 | 4790-106-1230 | 4.80 ppb |
| 2016-06-22 | 4790-112-0833 | 1.10 ppb |
| 2016-06-23 | 4790-110-1236 | ND |
| 2016-07-05 | 4790-063-1026 | 4.70 ppb |
| 2016-07-05 | 4790-081-0836 | 4.90 ppb |
| 2016-08-01 | 4790-071-0835 | ND |
| 2016-08-01 | 4790-081-0830 | 1.70 ppb |
| 2016-08-02 | 4790-063-0840 | 2.90 ppb |
| 2016-09-01 | 4790-063-0807 | 4.40 ppb |
| 2016-09-01 | 4790-081-0946 | 5.50 ppb |
| 2016-09-19 | 4790-101-1424 | 3.80 ppb |
| 2016-09-19 | 4790-102-0915 | 3.80 ppb |
| 2016-09-19 | 4790-111-0805 | ND |
| 2016-09-20 | 4790-104-1020 | 4.60 ppb |
| 2016-09-20 | 4790-107-1329 | ND |
| 2016-09-20 | 4790-113-1158 | 0.780 ppb |
| 2016-09-21 | 4790-106-0817 | 1.60 ppb |
| 2016-09-21 | 4790-108-1459 | 1.30 ppb |
| 2016-09-21 | 4790-112-1229 | 0.750 ppb |
| 2016-09-22 | 4790-103-0000 | 1.40 ppb |
| 2016-09-22 | 4790-109-0000 | ND |
| 2016-09-22 | 4790-110-0000 | ND |
| 2016-10-03 | 4790-063-0720 | 1.90 ppb |
| 2016-10-03 | 4790-081-0752 | 3.40 ppb |
| 2016-10-04 | 4790-063-0720 | 1.90 ppb |
| 2016-11-01 | 4790-063-0915 | 2.90 ppb |
| 2016-11-01 | 4790-081-0818 | 2.20 ppb |
| 2016-12-05 | 4790-063-0755 | ND |
| 2016-12-05 | 4790-081-0723 | 1.80 ppb |
| 2016-12-13 | 4790-101-0000 | 2.20 ppb |
| 2016-12-13 | 4790-102-0000 | ND |
| 2016-12-13 | 4790-103-0000 | ND |
| 2016-12-13 | 4790-106-0000 | 1.10 ppb |
| 2016-12-13 | 4790-107-0000 | ND |
| 2016-12-13 | 4790-108-0000 | ND |
| 2016-12-13 | 4790-109-0000 | ND |
| 2016-12-13 | 4790-110-0000 | ND |
| 2016-12-13 | 4790-111-0000 | ND |
| 2016-12-13 | 4790-112-0000 | ND |
| 2016-12-13 | 4790-113-0000 | ND |
| 2016-12-14 | 4790-104-1315 | ND |
| 2017-01-03 | 4790-081-0855 | 1.60 ppb |
| 2017-01-04 | 4790-063-0740 | ND |
| 2017-02-01 | 4790-063-0803 | 2.20 ppb |
| 2017-02-01 | 4790-081-0600 | 5.00 ppb |
| 2017-03-01 | 4790-063-0656 | 3.00 ppb |
| 2017-03-01 | 4790-081-0625 | 28.0 ppb |
| 2017-03-20 | 4790-101-1111 | 1.80 ppb |
| 2017-03-20 | 4790-102-0822 | 2.70 ppb |
| 2017-03-21 | 4790-103-0920 | 3.50 ppb |
| 2017-03-21 | 4790-104-1225 | 28.0 ppb |
| 2017-03-21 | 4790-108-1447 | 1.90 ppb |
| 2017-03-21 | 4790-111-1347 | 12.0 ppb |
| 2017-03-21 | 4790-113-1124 | 21.0 ppb |
| 2017-03-22 | 4790-106-0940 | 4.40 ppb |
| 2017-03-22 | 4790-112-1305 | 3.00 ppb |
| 2017-03-23 | 4790-107-0000 | 11.0 ppb |
| 2017-03-23 | 4790-109-0000 | ND |
| 2017-03-23 | 4790-110-0000 | 2.80 ppb |
| 2017-04-03 | 4790-063-0000 | 3.20 ppb |
| 2017-04-03 | 4790-081-0000 | 17.0 ppb |
| 2017-05-01 | 4790-063-0831 | 2.80 ppb |
| 2017-05-01 | 4790-081-0854 | 8.70 ppb |
| 2017-06-01 | 4790-063-0815 | 2.70 ppb |
| 2017-06-01 | 4790-081-0813 | 1.80 ppb |
| 2017-06-19 | 4790-101-1023 | 2.40 ppb |
| 2017-06-19 | 4790-102-0900 | 2.00 ppb |
| 2017-06-19 | 4790-111-0802 | ND |
| 2017-06-20 | 4790-104-1047 | 10.00 ppb |
| 2017-06-20 | 4790-106-1251 | ND |
| 2017-06-20 | 4790-107-1337 | ND |
| 2017-06-20 | 4790-108-1420 | 2.60 ppb |
| 2017-06-20 | 4790-113-1153 | 10.00 ppb |
| 2017-06-21 | 4790-106-1008 | 4.60 ppb |
| 2017-06-21 | 4790-112-1237 | 1.10 ppb |
| 2017-06-22 | 4790-103-0000 | 4.50 ppb |
| 2017-06-22 | 4790-110-0000 | 1.10 ppb |
| 2017-07-05 | 4790-063-0741 | 6.70 ppb |
| 2017-07-05 | 4790-081-0821 | 19.0 ppb |
| 2017-08-01 | 4790-063-1030 | 3.30 ppb |
| 2017-08-01 | 4790-081-1126 | 15.0 ppb |
| 2017-08-02 | 4790-071-0815 | ND |
| 2017-09-05 | 4790-063-0725 | 2.20 ppb |
| 2017-09-05 | 4790-081-0824 | 6.80 ppb |
| 2017-09-18 | 4790-101-1225 | ND |
| 2017-09-18 | 4790-102-0850 | ND |
| 2017-09-18 | 4790-108-1338 | 1.60 ppb |
| 2017-09-19 | 4790-104-1110 | 6.70 ppb |
| 2017-09-19 | 4790-107-1304 | ND |
| 2017-09-19 | 4790-109-1156 | ND |
| 2017-09-19 | 4790-111-1430 | ND |
| 2017-09-19 | 4790-113-1026 | ND |
| 2017-09-20 | 4790-103-1347 | 2.20 ppb |
| 2017-09-20 | 4790-106-1127 | 2.30 ppb |
| 2017-09-20 | 4790-112-0851 | ND |
| 2017-09-21 | 4790-110-0805 | ND |
| 2017-10-02 | 4790-063-0806 | 3.00 ppb |
| 2017-10-02 | 4790-081-0842 | 6.50 ppb |
| 2017-11-20 | 4790-081-0628 | 2.60 ppb |
| 2017-12-04 | 4790-063-0805 | 2.20 ppb |
| 2017-12-04 | 4790-081-0840 | 2.20 ppb |
| 2017-12-11 | 4790-081-0755 | 2.40 ppb |
| 2018-01-02 | 4790-063-0825 | 2.00 ppb |
| 2018-01-02 | 4790-081-0618 | 3.50 ppb |
| 2018-02-05 | 4790-063-0807 | 1.50 ppb |
| 2018-02-05 | 4790-081-0819 | 2.00 ppb |
| 2018-03-05 | 4790-081-0835 | ND |
| 2018-03-19 | 4790-101-1108 | ND |
| 2018-03-19 | 4790-102-0813 | 1.10 ppb |
| 2018-03-20 | 4790-081-1150 | 1.20 ppb |
| 2018-03-20 | 4790-103-0848 | ND |
| 2018-03-20 | 4790-108-1344 | ND |
| 2018-03-20 | 4790-111-1247 | ND |
| 2018-03-20 | 4790-113-1040 | ND |
| 2018-03-21 | 4790-106-0955 | ND |
| 2018-03-21 | 4790-112-1302 | ND |
| 2018-03-22 | 4790-107-0810 | ND |
| 2018-03-22 | 4790-109-0836 | ND |
| 2018-03-22 | 4790-110-1342 | ND |
| 2018-04-02 | 4790-063-0755 | ND |
| 2018-04-02 | 4790-081-0805 | ND |
| 2018-05-01 | 4790-063-0708 | 1.40 ppb |
| 2018-05-01 | 4790-081-0811 | 1.000 ppb |
| 2018-06-04 | 4790-063-0805 | 3.10 ppb |
| 2018-06-04 | 4790-081-0840 | 2.90 ppb |
| 2018-06-18 | 4790-101-1005 | 2.00 ppb |
| 2018-06-18 | 4790-102-0845 | 2.00 ppb |
| 2018-06-18 | 4790-111-0800 | ND |
| 2018-06-19 | 4790-081-1015 | 3.00 ppb |
| 2018-06-19 | 4790-107-1259 | ND |
| 2018-06-19 | 4790-108-1338 | ND |
| 2018-06-19 | 4790-109-1212 | ND |
| 2018-06-19 | 4790-113-1120 | ND |
| 2018-06-20 | 4790-103-1120 | 1.30 ppb |
| 2018-06-20 | 4790-106-0900 | 2.40 ppb |
| 2018-06-20 | 4790-110-1045 | 1.40 ppb |
| 2018-06-20 | 4790-112-1237 | 1.50 ppb |
| 2018-07-02 | 4790-063-0856 | 1.60 ppb |
| 2018-07-02 | 4790-081-0814 | 2.40 ppb |
| 2018-09-04 | 4790-063-0815 | 1.20 ppb |
| 2018-09-04 | 4790-081-0745 | 3.50 ppb |
| 2018-09-17 | 4790-101-1209 | 1.10 ppb |
| 2018-09-17 | 4790-102-0830 | 1.10 ppb |
| 2018-09-17 | 4790-108-1321 | ND |
| 2018-09-18 | 4790-081-1023 | 2.50 ppb |
| 2018-09-18 | 4790-107-1222 | ND |
| 2018-09-18 | 4790-109-1102 | ND |
| 2018-09-18 | 4790-111-1357 | ND |
| 2018-09-19 | 4790-106-0825 | 1.10 ppb |
| 2018-09-19 | 4790-112-1232 | ND |
| 2018-10-01 | 4790-063-0654 | ND |
| 2018-10-01 | 4790-081-0752 | 1.20 ppb |
| 2018-12-03 | 4790-063-0850 | ND |
| 2018-12-03 | 4790-081-0725 | ND |
| 2018-12-10 | 4790-101-1223 | ND |
| 2018-12-10 | 4790-102-0839 | ND |
| 2018-12-10 | 4790-108-1349 | 1.50 ppb |
| 2018-12-11 | 4790-081-1012 | ND |
| 2018-12-11 | 4790-107-1230 | ND |
| 2018-12-11 | 4790-109-1100 | ND |
| 2018-12-11 | 4790-111-1355 | ND |
| 2018-12-12 | 4790-106-0805 | 4.00 ppb |
| 2018-12-12 | 4790-112-1218 | ND |
| 2018-12-13 | 4790-103-0756 | 4.20 ppb |
| 2018-12-13 | 4790-110-0909 | ND |
| 2018-12-13 | 4790-113-0824 | ND |
| 2019-01-02 | 4790-081-0727 | ND |
| 2019-01-07 | 4790-063-0715 | 2.40 ppb |
| 2019-02-04 | 4790-063-0710 | ND |
| 2019-02-04 | 4790-081-0707 | ND |
| 2019-03-04 | 4790-063-0818 | 4.80 ppb |
| 2019-03-18 | 4790-101-1045 | 2.80 ppb |
| 2019-03-18 | 4790-102-0817 | 2.50 ppb |
| 2019-03-19 | 4790-104-1143 | 1.20 ppb |
| 2019-03-19 | 4790-107-1531 | ND |
| 2019-03-19 | 4790-108-1326 | 1.20 ppb |
| 2019-03-19 | 4790-109-1601 | ND |
| 2019-03-19 | 4790-111-1242 | ND |
| 2019-03-19 | 4790-113-1047 | ND |
| 2019-03-20 | 4790-103-0902 | 1.90 ppb |
| 2019-03-20 | 4790-106-0925 | 1.90 ppb |
| 2019-03-20 | 4790-112-1306 | 1.20 ppb |
| 2019-03-21 | 4790-110-1205 | 1.50 ppb |
| 2019-04-01 | 4790-063-0730 | 2.60 ppb |
| 2019-04-01 | 4790-081-0707 | 12.0 ppb |
| 2019-05-06 | 4790-063-1301 | 2.40 ppb |
| 2019-05-06 | 4790-081-1422 | 4.20 ppb |
| 2019-06-03 | 4790-063-1315 | 2.00 ppb |
| 2019-06-03 | 4790-081-1435 | 2.40 ppb |
| 2019-06-17 | 4790-101-1011 | ND |
| 2019-06-17 | 4790-102-0904 | ND |
| 2019-06-18 | 4790-104-1007 | 4.30 ppb |
| 2019-06-18 | 4790-107-1159 | 1.000 ppb |
| 2019-06-18 | 4790-108-1237 | ND |
| 2019-06-18 | 4790-113-1055 | ND |
| 2019-06-19 | 4790-106-0945 | 1.50 ppb |
| 2019-06-19 | 4790-112-1228 | 1.40 ppb |
| 2019-06-20 | 4790-103-1325 | 1.50 ppb |
| 2019-06-20 | 4790-109-1210 | ND |
| 2019-06-20 | 4790-110-1220 | ND |
| 2019-06-20 | 4790-111-1130 | ND |
| 2019-07-08 | 4790-063-1515 | ND |
| 2019-07-11 | 4790-081-1418 | 6.60 ppb |
| 2019-08-05 | 4790-063-1404 | 1.40 ppb |
| 2019-09-03 | 4790-063-1411 | 1.90 ppb |
| 2019-09-03 | 4790-081-1523 | 4.00 ppb |
| 2019-09-16 | 4790-104-1405 | 4.40 ppb |
| 2019-09-16 | 4790-113-1333 | 3.10 ppb |
| 2019-09-17 | 4790-101-1228 | 4.00 ppb |
| 2019-09-17 | 4790-102-0945 | 4.10 ppb |
| 2019-09-17 | 4790-106-1010 | ND |
| 2019-09-17 | 4790-108-1010 | ND |
| 2019-09-17 | 4790-109-1228 | 4.00 ppb |
| 2019-09-17 | 4790-111-1035 | 2.10 ppb |
| 2019-09-17 | 4790-112-0935 | ND |
| 2019-09-18 | 4790-106-0922 | 1.70 ppb |
| 2019-09-18 | 4790-107-1146 | 1.10 ppb |
| 2019-09-18 | 4790-109-1030 | ND |
| 2019-09-19 | 4790-103-0754 | 1.80 ppb |
| 2019-09-19 | 4790-106-0832 | ND |
| 2019-09-19 | 4790-110-0832 | ND |
| 2019-10-08 | 4790-063-1425 | 2.90 ppb |
| 2019-10-08 | 4790-081-1519 | 5.30 ppb |
| 2019-11-04 | 4790-063-1314 | 1.30 ppb |
| 2019-11-04 | 4790-081-1404 | 1.80 ppb |
| 2019-12-05 | 4790-081-1324 | ND |
| 2019-12-16 | 4790-104-1429 | 1.90 ppb |
| 2019-12-17 | 4790-101-1030 | 2.20 ppb |
| 2019-12-17 | 4790-102-0909 | 2.10 ppb |
| 2019-12-18 | 4790-103-1006 | 3.20 ppb |
| 2019-12-18 | 4790-106-0852 | 2.00 ppb |
| 2019-12-18 | 4790-108-1314 | ND |
| 2019-12-18 | 4790-112-0940 | ND |
| 2019-12-19 | 4790-110-1205 | ND |