Arsenic
City of Norco
Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.
423
Samples
105
Samples exceeding legal limit (MCL)
203
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 3.89 ppb | 114 | 57 | ND - 16.0 ppb |
| 2015 | 4.02 ppb | 87 | 36 | ND - 21.0 ppb |
| 2016 | 4.72 ppb | 66 | 27 | ND - 25.0 ppb |
| 2017 | 0.640 ppb | 69 | 36 | ND - 16.0 ppb |
| 2018 | 4.51 ppb | 51 | 35 | ND - 15.0 ppb |
| 2019 | 3.71 ppb | 36 | 12 | ND - 24.0 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.004 ppb
The EWG Health Guideline of 0.004 ppb for arsenic was defined 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. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL) 10 ppb
The legal limit for arsenic, established in 2001, was based on costs for arsenic removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to arsenic exposure.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-07 | 3761-012-0843 | ND |
| 2014-01-07 | 3761-013-0945 | 12.0 ppb |
| 2014-01-07 | 3761-015-0920 | ND |
| 2014-01-07 | 3761-016-0859 | 13.0 ppb |
| 2014-01-07 | 3761-018-0951 | ND |
| 2014-01-07 | 3761-023-0932 | 2.10 ppb |
| 2014-01-14 | 3761-012-1214 | 2.50 ppb |
| 2014-01-15 | 3761-012-1410 | ND |
| 2014-01-17 | 3761-018-0915 | 2.90 ppb |
| 2014-02-04 | 3761-012-1150 | ND |
| 2014-02-04 | 3761-013-0850 | 11.0 ppb |
| 2014-02-04 | 3761-015-0820 | ND |
| 2014-02-04 | 3761-016-1130 | 14.0 ppb |
| 2014-02-04 | 3761-018-0905 | ND |
| 2014-02-04 | 3761-023-0840 | ND |
| 2014-02-25 | 3761-012-1130 | 2.40 ppb |
| 2014-02-26 | 3761-012-1740 | 2.80 ppb |
| 2014-02-27 | 3761-012-1615 | 2.30 ppb |
| 2014-02-28 | 3761-012-0715 | 3.00 ppb |
| 2014-03-04 | 3761-012-1145 | 8.10 ppb |
| 2014-03-04 | 3761-013-1129 | 11.0 ppb |
| 2014-03-04 | 3761-015-1107 | ND |
| 2014-03-04 | 3761-016-1054 | 12.0 ppb |
| 2014-03-04 | 3761-018-1138 | ND |
| 2014-03-04 | 3761-023-1118 | ND |
| 2014-03-10 | 3761-012-1142 | 6.60 ppb |
| 2014-03-10 | 3761-013-1251 | 11.0 ppb |
| 2014-03-10 | 3761-018-1254 | ND |
| 2014-03-10 | 3761-023-1248 | ND |
| 2014-03-11 | 3761-012-0955 | ND |
| 2014-04-01 | 3761-012-0815 | ND |
| 2014-04-01 | 3761-013-0805 | 10.00 ppb |
| 2014-04-01 | 3761-015-0751 | ND |
| 2014-04-01 | 3761-016-0735 | 13.0 ppb |
| 2014-04-01 | 3761-018-0832 | ND |
| 2014-04-01 | 3761-023-0820 | ND |
| 2014-05-06 | 3761-012-1338 | 3.40 ppb |
| 2014-05-06 | 3761-013-1305 | 9.40 ppb |
| 2014-05-06 | 3761-015-1228 | ND |
| 2014-05-06 | 3761-016-1148 | 8.20 ppb |
| 2014-05-06 | 3761-018-1130 | ND |
| 2014-05-06 | 3761-023-1135 | ND |
| 2014-05-30 | 3761-012-0855 | ND |
| 2014-05-31 | 3761-012-1050 | ND |
| 2014-05-31 | 3761-013-1030 | 9.00 ppb |
| 2014-05-31 | 3761-018-1100 | ND |
| 2014-05-31 | 3761-023-1040 | ND |
| 2014-06-01 | 3761-012-0955 | 2.50 ppb |
| 2014-06-01 | 3761-013-0945 | 8.20 ppb |
| 2014-06-01 | 3761-018-1005 | ND |
| 2014-06-01 | 3761-023-0935 | ND |
| 2014-06-02 | 3761-012-1800 | 5.30 ppb |
| 2014-06-02 | 3761-018-1830 | 2.30 ppb |
| 2014-06-03 | 3761-012-1315 | 6.00 ppb |
| 2014-06-03 | 3761-013-1304 | 9.80 ppb |
| 2014-06-03 | 3761-015-1239 | ND |
| 2014-06-03 | 3761-016-1226 | 12.0 ppb |
| 2014-06-03 | 3761-018-1259 | 2.40 ppb |
| 2014-06-03 | 3761-023-1250 | ND |
| 2014-07-01 | 3761-012-0857 | 2.80 ppb |
| 2014-07-01 | 3761-013-0953 | 11.0 ppb |
| 2014-07-01 | 3761-015-0933 | ND |
| 2014-07-01 | 3761-016-0914 | 14.0 ppb |
| 2014-07-01 | 3761-018-0852 | ND |
| 2014-07-01 | 3761-023-1010 | ND |
| 2014-07-22 | 3761-012-1008 | ND |
| 2014-07-22 | 3761-013-0958 | 12.0 ppb |
| 2014-07-22 | 3761-018-1017 | ND |
| 2014-07-22 | 3761-023-1003 | ND |
| 2014-07-23 | 3761-012-1155 | ND |
| 2014-07-23 | 3761-023-1152 | ND |
| 2014-07-24 | 3761-012-1300 | 2.80 ppb |
| 2014-07-24 | 3761-023-1250 | ND |
| 2014-07-25 | 3761-018-1930 | 2.20 ppb |
| 2014-07-29 | 3761-018-0925 | 3.70 ppb |
| 2014-08-05 | 3761-012-1113 | 13.0 ppb |
| 2014-08-05 | 3761-013-1107 | 11.0 ppb |
| 2014-08-05 | 3761-015-1154 | ND |
| 2014-08-05 | 3761-016-1142 | 3.00 ppb |
| 2014-08-05 | 3761-018-1059 | 4.90 ppb |
| 2014-08-05 | 3761-018-2353 | 5.00 ppb |
| 2014-08-05 | 3761-023-1102 | ND |
| 2014-08-09 | 3761-012-0847 | 14.0 ppb |
| 2014-08-12 | 3761-018-1007 | ND |
| 2014-08-20 | 3761-012-1020 | 5.70 ppb |
| 2014-08-25 | 3761-018-1632 | 5.80 ppb |
| 2014-08-26 | 3761-018-0849 | 6.40 ppb |
| 2014-09-02 | 3761-012-1000 | ND |
| 2014-09-02 | 3761-013-0949 | 11.0 ppb |
| 2014-09-02 | 3761-015-0848 | ND |
| 2014-09-02 | 3761-016-0903 | 13.0 ppb |
| 2014-09-02 | 3761-018-1015 | ND |
| 2014-09-02 | 3761-023-0922 | ND |
| 2014-10-07 | 3761-012-0940 | ND |
| 2014-10-07 | 3761-013-0930 | 13.0 ppb |
| 2014-10-07 | 3761-015-0955 | ND |
| 2014-10-07 | 3761-016-1015 | 13.0 ppb |
| 2014-10-07 | 3761-018-0920 | ND |
| 2014-10-07 | 3761-023-0945 | ND |
| 2014-10-28 | 3761-012-1022 | ND |
| 2014-10-29 | 3761-012-1745 | ND |
| 2014-10-30 | 3761-012-0718 | 2.20 ppb |
| 2014-11-05 | 3761-012-1026 | 2.80 ppb |
| 2014-11-05 | 3761-013-1013 | 16.0 ppb |
| 2014-11-05 | 3761-015-0948 | ND |
| 2014-11-05 | 3761-016-0930 | 12.0 ppb |
| 2014-11-05 | 3761-018-1030 | ND |
| 2014-11-05 | 3761-023-1009 | ND |
| 2014-12-02 | 3761-012-0920 | ND |
| 2014-12-02 | 3761-013-1000 | 12.0 ppb |
| 2014-12-02 | 3761-015-0942 | 2.10 ppb |
| 2014-12-02 | 3761-016-0930 | 11.0 ppb |
| 2014-12-02 | 3761-018-0910 | ND |
| 2014-12-02 | 3761-023-0945 | ND |
| 2015-01-06 | 3761-012-0842 | ND |
| 2015-01-06 | 3761-013-0825 | 4.40 ppb |
| 2015-01-06 | 3761-015-0812 | ND |
| 2015-01-06 | 3761-016-0755 | 11.0 ppb |
| 2015-01-06 | 3761-018-0850 | ND |
| 2015-01-13 | 3761-013-0925 | 21.0 ppb |
| 2015-01-13 | 3761-018-0932 | ND |
| 2015-01-13 | 3761-023-0906 | ND |
| 2015-01-27 | 3761-012-1028 | ND |
| 2015-01-27 | 3761-013-1016 | 15.0 ppb |
| 2015-01-27 | 3761-018-1032 | 3.40 ppb |
| 2015-01-27 | 3761-023-1008 | 3.20 ppb |
| 2015-01-28 | 3761-012-1500 | ND |
| 2015-01-29 | 3761-012-1225 | 2.90 ppb |
| 2015-01-30 | 3761-012-0910 | 2.30 ppb |
| 2015-02-03 | 3761-012-0933 | 3.30 ppb |
| 2015-02-03 | 3761-013-1120 | 13.0 ppb |
| 2015-02-03 | 3761-015-1055 | ND |
| 2015-02-03 | 3761-016-0950 | 14.0 ppb |
| 2015-02-03 | 3761-018-1010 | 3.10 ppb |
| 2015-02-03 | 3761-023-1010 | ND |
| 2015-03-03 | 3761-012-0911 | ND |
| 2015-03-03 | 3761-015-0843 | ND |
| 2015-03-03 | 3761-016-0835 | 13.0 ppb |
| 2015-03-03 | 3761-018-0907 | ND |
| 2015-03-10 | 3761-013-0808 | 3.40 ppb |
| 2015-03-10 | 3761-018-0758 | ND |
| 2015-03-10 | 3761-023-0826 | ND |
| 2015-04-07 | 3761-012-1002 | ND |
| 2015-04-07 | 3761-013-0950 | 14.0 ppb |
| 2015-04-07 | 3761-015-0922 | ND |
| 2015-04-07 | 3761-016-0912 | 13.0 ppb |
| 2015-04-07 | 3761-018-1012 | ND |
| 2015-04-07 | 3761-023-0935 | ND |
| 2015-05-05 | 3761-012-0921 | ND |
| 2015-05-05 | 3761-013-1002 | 13.0 ppb |
| 2015-05-05 | 3761-015-0948 | ND |
| 2015-05-05 | 3761-016-0935 | 12.0 ppb |
| 2015-05-05 | 3761-018-0916 | ND |
| 2015-05-05 | 3761-023-0913 | ND |
| 2015-06-02 | 3761-012-0851 | ND |
| 2015-06-02 | 3761-013-0903 | 12.0 ppb |
| 2015-06-02 | 3761-015-0942 | ND |
| 2015-06-02 | 3761-016-0926 | 14.0 ppb |
| 2015-06-02 | 3761-018-0812 | 2.50 ppb |
| 2015-06-02 | 3761-023-0910 | 2.50 ppb |
| 2015-06-24 | 3761-012-1445 | ND |
| 2015-06-24 | 3761-023-1457 | ND |
| 2015-06-25 | 3761-012-1030 | ND |
| 2015-06-25 | 3761-023-1012 | ND |
| 2015-06-26 | 3761-012-0615 | ND |
| 2015-06-26 | 3761-023-0620 | ND |
| 2015-07-07 | 3761-012-0730 | ND |
| 2015-07-07 | 3761-013-0830 | 11.0 ppb |
| 2015-07-07 | 3761-015-0752 | ND |
| 2015-07-07 | 3761-016-0810 | 13.0 ppb |
| 2015-07-07 | 3761-018-1016 | ND |
| 2015-07-07 | 3761-023-1022 | ND |
| 2015-08-04 | 3761-012-1118 | ND |
| 2015-08-04 | 3761-015-1136 | ND |
| 2015-08-04 | 3761-016-1151 | 13.0 ppb |
| 2015-08-04 | 3761-018-1113 | ND |
| 2015-08-11 | 3761-013-0952 | ND |
| 2015-08-12 | 3761-013-0927 | 16.0 ppb |
| 2015-08-12 | 3761-018-0920 | ND |
| 2015-08-12 | 3761-023-0924 | ND |
| 2015-09-01 | 3761-012-1131 | ND |
| 2015-09-01 | 3761-013-0855 | 13.0 ppb |
| 2015-09-01 | 3761-015-0830 | ND |
| 2015-09-01 | 3761-016-1142 | 15.0 ppb |
| 2015-09-01 | 3761-018-0903 | 2.10 ppb |
| 2015-09-01 | 3761-023-0841 | 2.10 ppb |
| 2015-10-06 | 3761-012-1022 | ND |
| 2015-10-06 | 3761-013-1006 | 12.0 ppb |
| 2015-10-06 | 3761-015-0932 | ND |
| 2015-10-06 | 3761-016-0948 | 12.0 ppb |
| 2015-10-06 | 3761-018-1033 | ND |
| 2015-10-06 | 3761-023-1000 | ND |
| 2015-11-03 | 3761-012-1025 | ND |
| 2015-11-03 | 3761-013-0945 | 13.0 ppb |
| 2015-11-03 | 3761-015-0959 | ND |
| 2015-11-03 | 3761-016-0935 | 14.0 ppb |
| 2015-11-03 | 3761-018-0955 | ND |
| 2015-11-03 | 3761-023-0925 | 2.30 ppb |
| 2015-12-01 | 3761-015-0927 | ND |
| 2015-12-01 | 3761-016-0910 | 15.0 ppb |
| 2015-12-01 | 3761-018-0940 | ND |
| 2016-01-04 | 3761-015-1010 | ND |
| 2016-01-04 | 3761-016-0955 | 11.0 ppb |
| 2016-01-04 | 3761-018-1020 | ND |
| 2016-02-02 | 3761-015-0855 | ND |
| 2016-02-02 | 3761-016-1248 | 12.0 ppb |
| 2016-02-02 | 3761-018-0908 | ND |
| 2016-03-01 | 3761-015-1140 | ND |
| 2016-03-01 | 3761-016-1128 | 13.0 ppb |
| 2016-03-01 | 3761-018-0818 | ND |
| 2016-03-14 | 3761-013-1510 | 2.10 ppb |
| 2016-03-15 | 3761-013-1129 | ND |
| 2016-03-15 | 3761-018-1140 | ND |
| 2016-03-29 | 3761-013-1305 | 15.0 ppb |
| 2016-03-29 | 3761-015-0921 | ND |
| 2016-03-29 | 3761-018-1316 | 2.10 ppb |
| 2016-03-29 | 3761-023-1255 | 2.20 ppb |
| 2016-04-05 | 3761-013-1013 | 14.0 ppb |
| 2016-04-05 | 3761-015-0952 | ND |
| 2016-04-05 | 3761-016-1242 | 14.0 ppb |
| 2016-04-05 | 3761-018-0924 | ND |
| 2016-04-05 | 3761-023-0920 | ND |
| 2016-05-03 | 3761-013-1200 | 2.40 ppb |
| 2016-05-03 | 3761-015-1214 | ND |
| 2016-05-03 | 3761-016-1151 | 13.0 ppb |
| 2016-05-03 | 3761-018-0920 | ND |
| 2016-05-31 | 3761-013-1132 | ND |
| 2016-05-31 | 3761-015-1112 | ND |
| 2016-05-31 | 3761-018-0849 | ND |
| 2016-06-08 | 3761-013-1310 | ND |
| 2016-06-08 | 3761-015-1320 | ND |
| 2016-06-08 | 3761-016-1326 | 13.0 ppb |
| 2016-06-25 | 3761-013-0948 | 13.0 ppb |
| 2016-06-25 | 3761-018-0931 | ND |
| 2016-06-25 | 3761-023-0938 | ND |
| 2016-06-28 | 3761-018-0933 | ND |
| 2016-07-06 | 3761-013-1242 | 25.0 ppb |
| 2016-07-06 | 3761-016-1030 | 16.0 ppb |
| 2016-07-06 | 3761-018-1250 | ND |
| 2016-07-06 | 3761-023-1236 | 2.70 ppb |
| 2016-08-02 | 3761-013-1347 | 14.0 ppb |
| 2016-08-02 | 3761-015-1323 | ND |
| 2016-08-02 | 3761-016-1309 | 14.0 ppb |
| 2016-08-02 | 3761-018-1255 | ND |
| 2016-08-02 | 3761-023-1303 | ND |
| 2016-09-06 | 3761-013-1157 | ND |
| 2016-09-06 | 3761-016-1140 | 14.0 ppb |
| 2016-09-06 | 3761-018-0805 | ND |
| 2016-09-07 | 3761-013-1110 | 16.0 ppb |
| 2016-09-07 | 3761-018-1115 | ND |
| 2016-09-07 | 3761-023-1105 | ND |
| 2016-10-04 | 3761-013-1223 | 16.0 ppb |
| 2016-10-04 | 3761-015-1200 | ND |
| 2016-10-04 | 3761-016-1140 | 11.0 ppb |
| 2016-10-04 | 3761-018-1230 | ND |
| 2016-10-04 | 3761-023-1218 | ND |
| 2016-11-08 | 3761-013-1212 | 2.80 ppb |
| 2016-11-08 | 3761-015-1159 | ND |
| 2016-11-08 | 3761-016-1144 | 14.0 ppb |
| 2016-11-08 | 3761-018-0754 | ND |
| 2016-11-15 | 3761-013-1125 | 14.0 ppb |
| 2016-11-15 | 3761-018-1145 | ND |
| 2016-11-15 | 3761-023-1135 | ND |
| 2016-12-06 | 3761-013-1205 | 14.0 ppb |
| 2016-12-06 | 3761-016-1123 | 11.0 ppb |
| 2016-12-06 | 3761-018-1154 | ND |
| 2016-12-06 | 3761-023-1139 | ND |
| 2017-01-03 | 3761-013-0920 | ND |
| 2017-01-03 | 3761-015-0935 | ND |
| 2017-01-03 | 3761-016-0945 | 13.0 ppb |
| 2017-01-03 | 3761-018-0912 | ND |
| 2017-02-07 | 3761-013-1135 | 3.50 ppb |
| 2017-02-07 | 3761-015-0816 | ND |
| 2017-02-07 | 3761-016-1125 | 11.0 ppb |
| 2017-02-07 | 3761-018-0752 | ND |
| 2017-03-06 | 3761-013-0906 | 3.20 ppb |
| 2017-03-06 | 3761-015-0837 | ND |
| 2017-03-06 | 3761-016-0854 | 11.0 ppb |
| 2017-03-06 | 3761-018-0830 | ND |
| 2017-03-21 | 3761-013-1843 | 14.0 ppb |
| 2017-03-21 | 3761-015-1854 | ND |
| 2017-03-21 | 3761-018-1838 | 2.50 ppb |
| 2017-03-21 | 3761-023-1847 | 2.40 ppb |
| 2017-04-04 | 3761-013-1213 | 14.0 ppb |
| 2017-04-04 | 3761-015-1148 | ND |
| 2017-04-04 | 3761-016-1135 | 12.0 ppb |
| 2017-04-04 | 3761-018-1225 | 5.00 ppb |
| 2017-04-04 | 3761-023-1158 | 5.80 ppb |
| 2017-05-02 | 3761-012-1402 | 2.20 ppb |
| 2017-05-02 | 3761-012-1420 | ND |
| 2017-05-02 | 3761-013-1328 | 14.0 ppb |
| 2017-05-02 | 3761-013-1350 | 14.0 ppb |
| 2017-05-02 | 3761-015-1252 | ND |
| 2017-05-02 | 3761-015-1310 | ND |
| 2017-05-02 | 3761-016-1226 | 11.0 ppb |
| 2017-05-02 | 3761-016-1240 | 10.00 ppb |
| 2017-05-02 | 3761-018-1215 | ND |
| 2017-05-31 | 3761-013-1045 | 11.0 ppb |
| 2017-05-31 | 3761-018-1315 | ND |
| 2017-05-31 | 3761-023-1255 | ND |
| 2017-06-01 | 0.640 ppb* | |
| 2017-06-06 | 3761-013-1310 | 15.0 ppb |
| 2017-06-06 | 3761-015-1320 | ND |
| 2017-06-06 | 3761-016-1345 | 10.00 ppb |
| 2017-06-06 | 3761-018-1250 | ND |
| 2017-06-20 | 3761-013-0450 | 15.0 ppb |
| 2017-06-20 | 3761-018-0500 | ND |
| 2017-06-20 | 3761-023-0430 | ND |
| 2017-07-05 | 3761-013-1235 | 12.0 ppb |
| 2017-07-05 | 3761-015-1200 | ND |
| 2017-07-05 | 3761-016-1145 | 13.0 ppb |
| 2017-07-05 | 3761-018-1310 | ND |
| 2017-07-05 | 3761-023-1220 | ND |
| 2017-08-01 | 3761-013-1220 | 2.70 ppb |
| 2017-08-01 | 3761-015-1135 | ND |
| 2017-08-01 | 3761-016-1155 | 12.0 ppb |
| 2017-08-01 | 3761-018-1235 | ND |
| 2017-08-01 | 3761-023-1210 | ND |
| 2017-09-05 | 3761-013-1320 | 12.0 ppb |
| 2017-09-05 | 3761-015-1232 | ND |
| 2017-09-05 | 3761-016-1209 | 13.0 ppb |
| 2017-09-05 | 3761-018-1332 | ND |
| 2017-09-05 | 3761-023-1248 | ND |
| 2017-10-03 | 3761-013-1120 | 12.0 ppb |
| 2017-10-03 | 3761-015-1102 | ND |
| 2017-10-03 | 3761-016-1027 | 14.0 ppb |
| 2017-10-03 | 3761-018-1128 | 2.80 ppb |
| 2017-10-03 | 3761-023-1044 | 3.00 ppb |
| 2017-11-06 | 3761-013-1033 | 2.30 ppb |
| 2017-11-06 | 3761-015-0850 | ND |
| 2017-11-06 | 3761-016-1005 | 14.0 ppb |
| 2017-11-06 | 3761-018-1018 | ND |
| 2017-12-06 | 3761-013-1205 | 6.30 ppb |
| 2017-12-06 | 3761-015-1150 | ND |
| 2017-12-06 | 3761-016-1135 | 12.0 ppb |
| 2017-12-06 | 3761-018-1215 | ND |
| 2018-01-02 | 3761-013-1100 | 10.00 ppb |
| 2018-01-02 | 3761-015-1037 | ND |
| 2018-01-02 | 3761-016-1020 | 11.0 ppb |
| 2018-01-02 | 3761-018-1127 | ND |
| 2018-01-30 | 3761-013-1000 | 15.0 ppb |
| 2018-01-30 | 3761-018-1014 | 3.00 ppb |
| 2018-01-30 | 3761-023-0940 | 3.10 ppb |
| 2018-02-06 | 3761-013-1025 | 12.0 ppb |
| 2018-02-06 | 3761-015-1000 | ND |
| 2018-02-06 | 3761-016-0929 | 11.0 ppb |
| 2018-02-06 | 3761-018-1037 | 2.30 ppb |
| 2018-02-06 | 3761-023-0941 | 2.10 ppb |
| 2018-03-06 | 3761-013-1036 | 13.0 ppb |
| 2018-03-06 | 3761-018-1049 | ND |
| 2018-04-01 | 3761-013-0710 | 13.0 ppb |
| 2018-04-01 | 3761-018-0655 | 2.30 ppb |
| 2018-04-01 | 3761-023-0727 | 2.80 ppb |
| 2018-05-01 | 3761-013-1033 | 1.10 ppb |
| 2018-05-01 | 3761-016-1005 | 14.0 ppb |
| 2018-05-01 | 3761-018-1043 | ND |
| 2018-05-07 | 3761-013-1316 | 11.0 ppb |
| 2018-05-07 | 3761-018-1343 | ND |
| 2018-05-07 | 3761-023-1330 | 2.10 ppb |
| 2018-06-01 | 3761-013-1411 | 11.0 ppb |
| 2018-06-01 | 3761-018-1419 | 4.20 ppb |
| 2018-06-01 | 3761-023-1401 | 4.80 ppb |
| 2018-06-18 | 3761-015-1425 | ND |
| 2018-07-03 | 3761-013-1217 | 2.00 ppb |
| 2018-07-03 | 3761-015-1152 | 2.10 ppb |
| 2018-07-03 | 3761-018-1230 | 2.50 ppb |
| 2018-07-06 | 3761-013-1042 | 14.0 ppb |
| 2018-07-06 | 3761-018-1026 | 10.00 ppb |
| 2018-07-06 | 3761-023-1101 | 11.0 ppb |
| 2018-07-14 | 3761-013-1447 | 9.60 ppb |
| 2018-07-14 | 3761-018-1503 | 3.20 ppb |
| 2018-07-14 | 3761-023-1455 | 3.40 ppb |
| 2018-08-06 | 3761-013-0909 | 10.00 ppb |
| 2018-08-06 | 3761-015-0808 | ND |
| 2018-08-06 | 3761-018-0826 | 2.90 ppb |
| 2018-08-06 | 3761-023-0847 | 3.00 ppb |
| 2018-09-04 | 3761-013-0824 | 2.10 ppb |
| 2018-09-04 | 3761-015-0713 | ND |
| 2018-09-04 | 3761-018-0837 | ND |
| 2018-10-01 | 3761-013-0920 | 2.00 ppb |
| 2018-10-01 | 3761-018-0908 | ND |
| 2018-11-05 | 3761-013-0916 | ND |
| 2018-11-05 | 3761-015-0743 | ND |
| 2018-11-05 | 3761-018-0852 | ND |
| 2018-12-03 | 3761-013-0930 | 3.30 ppb |
| 2018-12-03 | 3761-015-0903 | ND |
| 2018-12-03 | 3761-018-0941 | ND |
| 2019-01-02 | 3761-013-1240 | 2.70 ppb |
| 2019-01-02 | 3761-015-0746 | ND |
| 2019-01-02 | 3761-018-1225 | ND |
| 2019-02-06 | 3761-013-0903 | 2.70 ppb |
| 2019-02-06 | 3761-015-0841 | ND |
| 2019-02-06 | 3761-018-0650 | ND |
| 2019-03-04 | 3761-013-1000 | 4.40 ppb |
| 2019-03-04 | 3761-015-0944 | ND |
| 2019-03-04 | 3761-018-1007 | ND |
| 2019-04-01 | 3761-013-1125 | 9.60 ppb |
| 2019-04-01 | 3761-015-1108 | ND |
| 2019-04-01 | 3761-018-1054 | ND |
| 2019-05-06 | 3761-013-1129 | 13.0 ppb |
| 2019-05-06 | 3761-015-1110 | ND |
| 2019-05-06 | 3761-018-0730 | ND |
| 2019-06-03 | 3761-013-1056 | 18.0 ppb |
| 2019-06-03 | 3761-015-0926 | ND |
| 2019-06-03 | 3761-018-0806 | ND |
| 2019-07-01 | 3761-013-0926 | 24.0 ppb |
| 2019-07-01 | 3761-015-0946 | ND |
| 2019-07-01 | 3761-018-0720 | ND |
| 2019-08-05 | 3761-013-1053 | 11.0 ppb |
| 2019-08-05 | 3761-015-1033 | ND |
| 2019-08-05 | 3761-018-0729 | ND |
| 2019-09-03 | 3761-013-1305 | 4.90 ppb |
| 2019-09-03 | 3761-015-0810 | ND |
| 2019-09-03 | 3761-018-0835 | ND |
| 2019-10-07 | 3761-013-1211 | 4.40 ppb |
| 2019-10-07 | 3761-015-1146 | ND |
| 2019-10-07 | 3761-018-0830 | ND |
| 2019-11-05 | 3761-013-1045 | 15.0 ppb |
| 2019-11-05 | 3761-015-1024 | ND |
| 2019-11-05 | 3761-018-0718 | ND |
| 2019-12-09 | 3761-013-0920 | 24.0 ppb |
| 2019-12-09 | 3761-015-0907 | ND |
| 2019-12-09 | 3761-018-0858 | ND |
* Sample result is taken from the system's CCR report.