Nitrate
Cal-water Service Company - Chico
Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.
559
Samples
0
Samples exceeding legal limit (MCL)
540
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 | 2.55 ppm | 91 | 91 | 0.257 ppm - 6.70 ppm |
| 2015 | 2.82 ppm | 94 | 92 | ND - 7.41 ppm |
| 2016 | 2.73 ppm | 95 | 92 | ND - 7.72 ppm |
| 2017 | 2.61 ppm | 90 | 85 | ND - 7.33 ppm |
| 2018 | 2.74 ppm | 93 | 87 | ND - 8.38 ppm |
| 2019 | 2.81 ppm | 96 | 93 | ND - 9.60 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EWG Health Guideline 0.14 ppm
The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.
EPA Maximum Contaminant
Level (MCL) 10 ppm
The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.
ppm = parts per million
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-06 | 5701-034-1002 | 2.81 ppm |
| 2014-01-14 | 5701-029-1130 | 3.44 ppm |
| 2014-01-14 | 5701-046-1142 | 0.838 ppm |
| 2014-01-14 | 5701-048-1202 | 6.70 ppm |
| 2014-01-14 | 5701-068-0930 | 0.444 ppm |
| 2014-01-14 | 5701-139-1109 | 4.42 ppm |
| 2014-01-21 | 5810-134-1010 | 0.745 ppm |
| 2014-01-22 | 5701-035-1256 | 0.510 ppm |
| 2014-01-22 | 5701-074-1115 | 1.27 ppm |
| 2014-02-03 | 5701-034-1044 | 2.66 ppm |
| 2014-02-04 | 5701-027-1001 | 4.78 ppm |
| 2014-02-04 | 5701-028-1204 | 2.29 ppm |
| 2014-02-04 | 5701-056-1219 | 2.99 ppm |
| 2014-02-04 | 5701-059-1024 | 4.58 ppm |
| 2014-02-05 | 5810-005-1018 | 3.84 ppm |
| 2014-02-05 | 5810-010-1048 | 3.84 ppm |
| 2014-02-05 | 5810-017-1250 | 5.20 ppm |
| 2014-02-11 | 5810-006-1047 | 1.27 ppm |
| 2014-02-11 | 5701-143-1225 | 0.257 ppm |
| 2014-02-25 | 5701-061-1035 | 0.611 ppm |
| 2014-03-03 | 5701-030-1030 | 1.79 ppm |
| 2014-03-03 | 5701-034-1044 | 2.51 ppm |
| 2014-03-04 | 5810-018-1120 | 0.858 ppm |
| 2014-03-11 | 5810-007-1107 | 3.39 ppm |
| 2014-03-12 | 5701-063-0800 | 6.47 ppm |
| 2014-03-17 | 5701-043-0943 | 1.06 ppm |
| 2014-04-02 | 5701-075-1200 | 0.486 ppm |
| 2014-04-09 | 5810-011-1025 | 2.48 ppm |
| 2014-05-12 | 5701-017-0940 | 5.25 ppm |
| 2014-05-12 | 5810-069-0910 | 0.565 ppm |
| 2014-05-12 | 5701-071-1240 | 3.57 ppm |
| 2014-05-12 | 5701-077-0815 | 0.937 ppm |
| 2014-05-12 | 5810-136-0930 | 0.700 ppm |
| 2014-05-12 | 5701-143-0900 | 0.282 ppm |
| 2014-05-13 | 5701-027-1430 | 4.34 ppm |
| 2014-05-13 | 5701-041-1140 | 1.39 ppm |
| 2014-05-13 | 5701-056-1215 | 4.21 ppm |
| 2014-05-13 | 5701-059-1030 | 4.88 ppm |
| 2014-05-28 | 5810-062-0820 | 0.949 ppm |
| 2014-06-03 | 5701-033-1150 | 0.265 ppm |
| 2014-06-03 | 5701-076-0850 | 1.09 ppm |
| 2014-06-04 | 5810-019-0858 | 2.71 ppm |
| 2014-06-10 | 5701-063-0845 | 5.58 ppm |
| 2014-06-17 | 5701-049-1356 | 1.45 ppm |
| 2014-06-18 | 5701-062-0803 | 0.856 ppm |
| 2014-06-30 | 5701-031-0858 | 1.72 ppm |
| 2014-07-14 | 5810-013-1030 | 2.94 ppm |
| 2014-07-16 | 5701-139-0934 | 4.46 ppm |
| 2014-07-22 | 5701-023-1105 | 2.07 ppm |
| 2014-07-22 | 5701-031-1034 | 1.62 ppm |
| 2014-07-22 | 5701-048-1154 | 6.54 ppm |
| 2014-07-29 | 5701-029-1106 | 3.36 ppm |
| 2014-07-29 | 5701-053-1131 | 0.808 ppm |
| 2014-08-04 | 5701-017-0831 | 5.00 ppm |
| 2014-08-04 | 5701-027-1113 | 2.47 ppm |
| 2014-08-04 | 5701-071-1030 | 3.65 ppm |
| 2014-08-11 | 5701-028-1155 | 0.948 ppm |
| 2014-08-11 | 5701-030-0838 | 1.02 ppm |
| 2014-08-12 | 5810-037-0904 | 0.836 ppm |
| 2014-08-13 | 5810-065-0825 | 0.791 ppm |
| 2014-08-20 | 5701-056-0745 | 2.48 ppm |
| 2014-08-20 | 5701-059-0930 | 5.58 ppm |
| 2014-08-20 | 5701-143-0801 | 0.275 ppm |
| 2014-08-27 | 5701-068-1124 | 0.474 ppm |
| 2014-09-16 | 5810-020-1003 | 0.949 ppm |
| 2014-09-17 | 5701-037-0807 | 0.725 ppm |
| 2014-09-17 | 5701-050-0900 | 2.15 ppm |
| 2014-09-17 | 5701-140-0910 | 0.508 ppm |
| 2014-09-22 | 5701-063-0856 | 5.24 ppm |
| 2014-09-29 | 5701-032-0930 | 0.597 ppm |
| 2014-09-29 | 5701-036-0843 | 2.14 ppm |
| 2014-10-07 | 5701-013-1047 | 2.95 ppm |
| 2014-10-07 | 5701-027-1213 | 4.45 ppm |
| 2014-10-07 | 5701-031-0910 | 1.59 ppm |
| 2014-10-07 | 5701-048-1040 | 6.67 ppm |
| 2014-10-07 | 5701-063-1001 | 5.25 ppm |
| 2014-10-13 | 5810-050-0945 | 2.06 ppm |
| 2014-10-13 | 5701-068-0804 | 0.535 ppm |
| 2014-10-15 | 5701-046-1108 | 0.548 ppm |
| 2014-10-15 | 5701-139-1019 | 4.40 ppm |
| 2014-10-21 | 5701-029-1027 | 3.49 ppm |
| 2014-11-04 | 5701-064-0919 | 0.658 ppm |
| 2014-11-17 | 5701-056-1003 | 3.46 ppm |
| 2014-11-17 | 5701-071-1332 | 3.60 ppm |
| 2014-11-18 | 5701-017-1110 | 5.17 ppm |
| 2014-11-18 | 5701-027-1044 | 4.72 ppm |
| 2014-11-18 | 5701-059-1000 | 4.76 ppm |
| 2014-11-19 | 5701-143-1040 | 0.298 ppm |
| 2014-12-16 | 5701-063-1331 | 3.61 ppm |
| 2014-12-18 | 2718-054-0730 | 1.30 ppm |
| 2014-12-18 | 2718-057-0600 | 1.26 ppm |
| 2015-01-13 | 5810-048-1305 | 6.78 ppm |
| 2015-01-13 | 5810-074-1030 | 1.04 ppm |
| 2015-01-13 | 5810-139-1253 | 4.07 ppm |
| 2015-01-14 | 5810-035-0814 | 0.587 ppm |
| 2015-01-14 | 5810-035-0820 | 0.587 ppm |
| 2015-01-14 | 5810-046-1250 | 0.881 ppm |
| 2015-01-14 | 5810-134-0920 | 0.745 ppm |
| 2015-01-21 | 5701-029-1220 | 3.48 ppm |
| 2015-02-10 | 5701-017-1220 | 5.20 ppm |
| 2015-02-10 | 5701-027-1150 | 4.58 ppm |
| 2015-02-10 | 5701-059-0945 | 4.48 ppm |
| 2015-02-24 | 5701-006-1245 | 1.60 ppm |
| 2015-02-24 | 5701-010-1205 | 4.09 ppm |
| 2015-02-24 | 5810-034-1030 | 1.58 ppm |
| 2015-02-25 | 5810-028-1120 | 1.54 ppm |
| 2015-03-03 | 5810-030-1150 | 2.94 ppm |
| 2015-03-10 | 5701-063-1207 | 6.89 ppm |
| 2015-03-10 | 5701-074-0846 | 0.993 ppm |
| 2015-03-16 | 5701-007-1010 | 3.32 ppm |
| 2015-03-16 | 5701-033-1040 | 0.197 ppm |
| 2015-03-16 | 5701-061-1040 | 1.84 ppm |
| 2015-03-16 | 5701-071-1417 | 4.69 ppm |
| 2015-03-17 | 5701-018-1146 | 0.743 ppm |
| 2015-03-17 | 5701-076-1100 | 1.95 ppm |
| 2015-03-25 | 5701-013-1200 | 4.84 ppm |
| 2015-03-25 | 5701-068-1243 | 0.761 ppm |
| 2015-04-08 | 5701-026-1120 | 0.772 ppm |
| 2015-04-08 | 5701-038-0908 | 0.396 ppm |
| 2015-04-08 | 5701-054-1010 | 1.02 ppm |
| 2015-04-13 | 5810-075-0958 | 0.452 ppm |
| 2015-04-14 | 5701-013-0850 | 3.03 ppm |
| 2015-04-14 | 5701-046-1140 | 0.751 ppm |
| 2015-04-14 | 5701-048-1140 | 6.67 ppm |
| 2015-04-14 | 5701-068-1430 | 0.521 ppm |
| 2015-04-14 | 5701-139-1356 | 4.28 ppm |
| 2015-05-06 | 5701-011-0800 | 2.36 ppm |
| 2015-05-13 | 5701-017-1000 | 5.21 ppm |
| 2015-05-13 | 5810-029-1310 | 3.39 ppm |
| 2015-05-13 | 5810-032-1000 | 0.587 ppm |
| 2015-05-13 | 5810-036-1044 | 2.71 ppm |
| 2015-05-13 | 5701-041-1050 | 1.18 ppm |
| 2015-05-13 | 5701-059-0912 | 4.52 ppm |
| 2015-05-13 | 5701-071-0810 | 5.09 ppm |
| 2015-05-20 | 5810-027-0915 | 4.07 ppm |
| 2015-05-20 | 5701-034-1545 | 2.46 ppm |
| 2015-05-20 | 5701-077-1448 | 0.943 ppm |
| 2015-05-27 | 5701-069-1010 | 0.504 ppm |
| 2015-05-27 | 5701-136-1045 | 0.714 ppm |
| 2015-05-27 | 5701-140-1100 | 0.526 ppm |
| 2015-06-03 | 5701-019-0800 | 2.78 ppm |
| 2015-06-03 | 5701-062-1015 | 1.17 ppm |
| 2015-06-09 | 5810-031-1020 | 1.54 ppm |
| 2015-06-09 | 5701-050-1010 | 2.62 ppm |
| 2015-06-09 | 5810-057-1113 | 1.02 ppm |
| 2015-06-09 | 5810-064-0915 | 0.610 ppm |
| 2015-06-16 | 5701-049-1034 | 1.50 ppm |
| 2015-06-16 | 5810-063-0910 | 6.55 ppm |
| 2015-07-13 | 5701-046-0801 | 0.692 ppm |
| 2015-07-13 | 5701-139-0952 | 4.71 ppm |
| 2015-07-14 | 5810-052-0700 | 5.42 ppm |
| 2015-07-22 | 5701-013-1446 | 3.06 ppm |
| 2015-07-22 | 5701-048-1400 | 4.98 ppm |
| 2015-07-22 | 5701-053-1045 | 0.797 ppm |
| 2015-07-22 | 5701-068-1429 | 0.509 ppm |
| 2015-08-06 | 5810-033-1005 | ND |
| 2015-08-11 | 5810-143-0845 | ND |
| 2015-08-17 | 5701-017-1305 | 5.01 ppm |
| 2015-08-17 | 5701-027-1032 | 4.22 ppm |
| 2015-08-17 | 5701-071-0800 | 5.14 ppm |
| 2015-08-18 | 5701-028-1030 | 0.945 ppm |
| 2015-08-18 | 5701-037-1010 | 0.748 ppm |
| 2015-08-18 | 5701-057-0930 | 1.02 ppm |
| 2015-08-18 | 5701-065-0958 | 0.720 ppm |
| 2015-08-24 | 5701-034-1005 | 0.950 ppm |
| 2015-08-24 | 5701-056-1025 | 5.40 ppm |
| 2015-08-24 | 5701-059-1002 | 5.72 ppm |
| 2015-09-01 | 5701-020-1232 | 1.17 ppm |
| 2015-09-02 | 5701-071-0745 | 5.26 ppm |
| 2015-09-14 | 5810-005-1025 | 3.80 ppm |
| 2015-09-16 | 5701-063-0855 | 6.83 ppm |
| 2015-10-13 | 5701-068-1410 | 0.520 ppm |
| 2015-10-14 | 5701-139-0904 | 4.65 ppm |
| 2015-10-21 | 5701-046-1013 | 1.02 ppm |
| 2015-10-21 | 5701-048-1311 | 5.54 ppm |
| 2015-10-27 | 5701-052-0900 | 5.29 ppm |
| 2015-10-27 | 5701-091-0903 | 5.24 ppm |
| 2015-11-02 | 5701-013-1042 | 5.23 ppm |
| 2015-11-16 | 5701-034-1300 | 1.04 ppm |
| 2015-11-17 | 5701-017-1100 | 5.15 ppm |
| 2015-11-17 | 5701-027-1146 | 4.81 ppm |
| 2015-11-17 | 5701-071-0744 | 5.32 ppm |
| 2015-11-23 | 5701-059-0730 | 5.46 ppm |
| 2015-11-30 | 5701-063-1020 | 7.41 ppm |
| 2015-12-14 | 5701-043-0945 | 1.12 ppm |
| 2016-01-05 | 5701-134-1010 | 0.690 ppm |
| 2016-01-11 | 5701-052-0947 | 4.74 ppm |
| 2016-01-11 | 5701-091-1005 | 4.45 ppm |
| 2016-01-12 | 5701-068-0930 | 0.513 ppm |
| 2016-01-26 | 5701-046-1115 | 0.782 ppm |
| 2016-01-26 | 5701-048-1425 | 6.63 ppm |
| 2016-01-27 | 5701-035-1140 | 0.534 ppm |
| 2016-02-03 | 5701-017-1235 | 5.13 ppm |
| 2016-02-08 | 5701-006-1339 | 0.970 ppm |
| 2016-02-08 | 5701-059-1316 | 5.50 ppm |
| 2016-02-09 | 5701-027-1217 | 4.81 ppm |
| 2016-02-16 | 5701-005-1305 | 3.83 ppm |
| 2016-02-16 | 5701-010-1030 | 4.07 ppm |
| 2016-02-17 | 5810-043-1018 | 0.920 ppm |
| 2016-02-17 | 5810-076-0830 | 1.10 ppm |
| 2016-02-24 | 5701-006-0945 | 1.03 ppm |
| 2016-02-24 | 5810-023-0955 | 1.80 ppm |
| 2016-03-02 | 5701-007-1100 | 3.33 ppm |
| 2016-03-02 | 5701-063-1300 | 5.41 ppm |
| 2016-03-09 | 5810-074-0930 | 0.880 ppm |
| 2016-03-15 | 1677-071-0420 | 5.40 ppm |
| 2016-03-16 | 5701-013-0300 | 5.44 ppm |
| 2016-03-16 | 5701-034-0600 | 2.22 ppm |
| 2016-03-18 | 2718-018-0315 | 1.01 ppm |
| 2016-03-18 | 2718-018-0615 | 0.500 ppm |
| 2016-03-22 | 5701-030-1042 | 2.15 ppm |
| 2016-03-28 | 5701-061-0845 | 1.10 ppm |
| 2016-04-11 | 5701-052-1420 | 4.64 ppm |
| 2016-04-11 | 5701-091-0927 | 4.40 ppm |
| 2016-04-13 | 5810-041-1105 | 0.740 ppm |
| 2016-04-13 | 5810-054-0810 | 0.790 ppm |
| 2016-04-13 | 5810-061-0830 | 0.800 ppm |
| 2016-04-13 | 5701-062-1054 | 1.21 ppm |
| 2016-04-15 | 2718-019-0500 | 2.79 ppm |
| 2016-04-19 | 5701-011-0931 | 2.34 ppm |
| 2016-04-19 | 5701-013-1310 | 5.09 ppm |
| 2016-04-19 | 5701-068-1335 | 0.560 ppm |
| 2016-04-20 | 5701-026-0905 | 0.889 ppm |
| 2016-04-20 | 5810-038-1315 | ND |
| 2016-04-20 | 5701-046-1045 | 0.861 ppm |
| 2016-04-20 | 5701-048-0753 | 6.63 ppm |
| 2016-04-25 | 5701-075-1045 | 0.582 ppm |
| 2016-05-04 | 5701-017-0940 | 5.14 ppm |
| 2016-05-04 | 5701-071-0715 | 5.29 ppm |
| 2016-05-11 | 5701-029-1035 | 3.55 ppm |
| 2016-05-11 | 5701-032-1300 | 0.729 ppm |
| 2016-05-11 | 5701-034-0747 | 1.94 ppm |
| 2016-05-11 | 5701-036-0733 | 3.60 ppm |
| 2016-05-17 | 5810-026-1240 | 0.620 ppm |
| 2016-05-17 | 5810-077-0830 | 0.760 ppm |
| 2016-05-17 | 5810-140-0840 | 0.410 ppm |
| 2016-05-18 | 5701-069-0958 | 0.543 ppm |
| 2016-05-18 | 5701-136-0900 | 0.698 ppm |
| 2016-05-24 | 5701-027-1057 | 4.21 ppm |
| 2016-05-24 | 5701-059-1245 | 5.63 ppm |
| 2016-05-25 | 5701-050-1143 | 2.28 ppm |
| 2016-06-15 | 5701-064-1030 | 0.622 ppm |
| 2016-06-22 | 5701-063-0915 | 6.71 ppm |
| 2016-07-12 | 5810-049-1230 | 1.30 ppm |
| 2016-07-12 | 5701-052-0930 | 4.30 ppm |
| 2016-07-12 | 5701-091-0925 | 4.17 ppm |
| 2016-07-20 | 5701-023-1159 | 2.00 ppm |
| 2016-07-20 | 5701-046-0945 | 0.721 ppm |
| 2016-07-26 | 5701-013-0819 | 2.99 ppm |
| 2016-07-26 | 5701-048-0923 | 4.79 ppm |
| 2016-07-26 | 5701-068-1320 | 0.454 ppm |
| 2016-08-09 | 5701-017-1410 | 5.17 ppm |
| 2016-08-09 | 5701-027-1030 | 4.06 ppm |
| 2016-08-10 | 5810-056-1014 | 2.20 ppm |
| 2016-08-10 | 5810-059-0846 | 5.30 ppm |
| 2016-08-16 | 5701-034-0832 | 1.23 ppm |
| 2016-08-16 | 5701-037-0814 | 0.812 ppm |
| 2016-08-22 | 5701-057-0801 | 1.09 ppm |
| 2016-08-22 | 5701-065-0826 | 0.771 ppm |
| 2016-08-22 | 5701-143-0745 | ND |
| 2016-09-13 | 5701-020-1137 | 1.04 ppm |
| 2016-09-13 | 5701-063-0930 | 6.98 ppm |
| 2016-10-03 | 5701-028-0929 | 1.96 ppm |
| 2016-10-03 | 5701-033-1302 | ND |
| 2016-10-03 | 5701-052-1132 | 4.32 ppm |
| 2016-10-03 | 5701-091-1146 | 4.44 ppm |
| 2016-10-03 | 5701-091-1147 | 4.45 ppm |
| 2016-10-11 | 5701-013-0749 | 2.88 ppm |
| 2016-10-12 | 5810-048-0825 | 4.00 ppm |
| 2016-10-12 | 5810-057-1128 | 0.850 ppm |
| 2016-10-18 | 5701-068-1214 | 0.482 ppm |
| 2016-10-19 | 5701-046-1042 | 0.847 ppm |
| 2016-10-26 | 5701-019-1140 | 1.81 ppm |
| 2016-11-01 | 5701-027-1124 | 4.57 ppm |
| 2016-11-01 | 5701-034-0917 | 1.63 ppm |
| 2016-11-15 | 5701-017-1125 | 5.06 ppm |
| 2016-11-15 | 5701-059-0819 | 5.52 ppm |
| 2016-12-13 | 5701-063-0903 | 7.72 ppm |
| 2016-12-21 | 5701-052-0935 | 4.45 ppm |
| 2016-12-27 | 5701-071-0829 | 4.57 ppm |
| 2017-01-11 | 5701-052-1022 | 5.31 ppm |
| 2017-01-11 | 5701-091-1021 | 4.84 ppm |
| 2017-01-11 | 5810-134-1320 | 0.520 ppm |
| 2017-01-12 | 5810-043-0939 | 0.870 ppm |
| 2017-01-12 | 5810-048-0541 | 6.20 ppm |
| 2017-01-17 | 5701-068-0856 | 0.482 ppm |
| 2017-01-18 | 5810-035-0837 | 0.400 ppm |
| 2017-01-23 | 5701-046-0941 | 1.000 ppm |
| 2017-02-14 | 5701-071-0816 | 5.10 ppm |
| 2017-02-15 | 5810-005-0945 | 2.80 ppm |
| 2017-02-15 | 5810-010-1150 | 3.70 ppm |
| 2017-02-15 | 5810-017-1018 | 4.70 ppm |
| 2017-02-15 | 5810-028-1305 | 0.680 ppm |
| 2017-02-27 | 5701-043-1100 | 1.17 ppm |
| 2017-03-13 | 5810-018-0805 | 0.640 ppm |
| 2017-03-14 | 5701-059-0605 | 4.16 ppm |
| 2017-03-15 | 5810-007-0853 | 2.80 ppm |
| 2017-03-15 | 5701-027-0645 | 4.65 ppm |
| 2017-03-16 | 5810-030-1115 | 1.80 ppm |
| 2017-03-16 | 5810-034-0600 | 1.70 ppm |
| 2017-03-21 | 5701-033-0904 | ND |
| 2017-03-21 | 5701-061-1254 | 0.653 ppm |
| 2017-03-22 | 5701-013-0600 | 5.31 ppm |
| 2017-03-22 | 5701-063-1050 | 7.33 ppm |
| 2017-03-22 | 5701-074-0820 | 1.76 ppm |
| 2017-04-05 | 5701-052-1007 | 4.28 ppm |
| 2017-04-05 | 5701-091-1010 | 3.97 ppm |
| 2017-04-18 | 5701-013-0927 | 4.55 ppm |
| 2017-04-18 | 5701-041-1115 | 0.890 ppm |
| 2017-04-18 | 5701-046-0900 | 0.840 ppm |
| 2017-04-18 | 5701-054-1330 | 0.798 ppm |
| 2017-04-18 | 5701-068-0842 | ND |
| 2017-04-19 | 5810-011-0850 | 1.90 ppm |
| 2017-04-25 | 5701-038-0950 | 0.455 ppm |
| 2017-04-25 | 5701-075-1130 | 0.468 ppm |
| 2017-04-26 | 5701-048-0955 | 6.71 ppm |
| 2017-05-08 | 5701-031-0845 | 2.04 ppm |
| 2017-05-08 | 5701-077-0815 | 0.971 ppm |
| 2017-05-11 | 5810-036-1200 | 2.70 ppm |
| 2017-05-11 | 5810-050-1135 | 1.70 ppm |
| 2017-05-15 | 5701-059-0934 | 5.72 ppm |
| 2017-05-16 | 5701-140-1040 | 0.576 ppm |
| 2017-05-17 | 5810-136-1120 | 0.470 ppm |
| 2017-05-23 | 5701-017-1046 | 5.05 ppm |
| 2017-05-23 | 5810-026-1315 | 1.10 ppm |
| 2017-05-24 | 5701-071-0818 | 4.84 ppm |
| 2017-06-07 | 5810-031-1230 | 1.80 ppm |
| 2017-06-07 | 5810-032-1200 | 0.560 ppm |
| 2017-06-07 | 5810-069-1120 | 0.470 ppm |
| 2017-06-12 | 5810-053-1255 | 0.890 ppm |
| 2017-06-14 | 5701-063-0803 | 5.85 ppm |
| 2017-06-19 | 5701-049-1405 | 1.74 ppm |
| 2017-06-19 | 5701-064-0920 | 0.638 ppm |
| 2017-06-26 | 5810-019-1329 | 2.40 ppm |
| 2017-06-28 | 5810-029-1145 | 3.10 ppm |
| 2017-06-29 | 5810-091-1425 | 5.30 ppm |
| 2017-07-10 | 5701-091-1155 | 2.19 ppm |
| 2017-07-12 | 5701-091-1012 | 5.04 ppm |
| 2017-07-18 | 5701-023-0800 | 1.22 ppm |
| 2017-07-18 | 5701-046-1050 | 0.797 ppm |
| 2017-07-24 | 5701-053-1014 | 0.895 ppm |
| 2017-07-25 | 5701-048-0945 | 4.33 ppm |
| 2017-07-25 | 5701-068-0811 | 0.477 ppm |
| 2017-07-27 | 5810-029-1208 | 3.20 ppm |
| 2017-08-08 | 5701-017-1142 | 4.90 ppm |
| 2017-08-08 | 5701-028-1355 | 0.885 ppm |
| 2017-08-08 | 5701-071-0820 | 4.74 ppm |
| 2017-08-14 | 5701-059-1140 | 5.45 ppm |
| 2017-08-21 | 5810-033-1240 | ND |
| 2017-08-21 | 5810-037-1210 | 0.600 ppm |
| 2017-08-21 | 5810-065-1150 | 0.580 ppm |
| 2017-08-22 | 5701-143-0832 | ND |
| 2017-08-23 | 5701-056-0748 | 2.42 ppm |
| 2017-08-23 | 5701-057-1021 | 0.990 ppm |
| 2017-08-28 | 5701-027-0800 | 3.99 ppm |
| 2017-09-13 | 5701-091-1122 | 3.95 ppm |
| 2017-09-18 | 5701-063-0825 | 6.32 ppm |
| 2017-09-20 | 5810-020-1240 | 0.740 ppm |
| 2017-10-17 | 5701-046-1310 | 0.792 ppm |
| 2017-10-17 | 5701-048-1045 | 3.72 ppm |
| 2017-10-17 | 5701-052-1107 | 4.20 ppm |
| 2017-10-17 | 5701-091-1112 | 4.24 ppm |
| 2017-10-23 | 5701-027-0813 | 4.15 ppm |
| 2017-10-23 | 5701-059-1321 | 5.51 ppm |
| 2017-10-24 | 5701-068-0929 | ND |
| 2017-10-24 | 5701-076-1218 | 1.07 ppm |
| 2017-10-25 | 5810-062-1158 | 0.780 ppm |
| 2017-11-01 | 5701-063-0814 | 5.82 ppm |
| 2017-11-14 | 5701-017-1101 | 4.89 ppm |
| 2017-11-14 | 5701-071-0826 | 4.61 ppm |
| 2018-01-10 | 5701-052-1256 | 4.13 ppm |
| 2018-01-10 | 5701-091-1245 | 3.98 ppm |
| 2018-01-16 | 5701-068-1340 | 0.460 ppm |
| 2018-01-23 | 5701-035-1016 | 1.83 ppm |
| 2018-01-23 | 5701-046-1055 | 0.946 ppm |
| 2018-01-29 | 5701-005-1019 | 3.99 ppm |
| 2018-01-29 | 5701-010-1357 | 4.00 ppm |
| 2018-01-30 | 5701-134-1450 | 0.696 ppm |
| 2018-02-12 | 5701-017-1034 | 4.97 ppm |
| 2018-02-12 | 5701-071-0809 | 4.99 ppm |
| 2018-02-21 | 5701-043-1116 | 1.13 ppm |
| 2018-02-27 | 5701-076-1345 | 1.12 ppm |
| 2018-03-14 | 5701-034-1015 | 2.11 ppm |
| 2018-03-19 | 5701-063-1030 | 8.38 ppm |
| 2018-03-20 | 5701-027-1020 | 4.87 ppm |
| 2018-03-21 | 5701-048-0620 | 6.65 ppm |
| 2018-03-26 | 5701-011-0900 | 2.17 ppm |
| 2018-03-26 | 5701-018-1056 | 0.701 ppm |
| 2018-03-27 | 5701-005-1021 | 4.38 ppm |
| 2018-03-27 | 5701-035-1413 | 1.93 ppm |
| 2018-03-28 | 5701-074-1100 | 1.12 ppm |
| 2018-04-09 | 5701-052-0845 | 4.40 ppm |
| 2018-04-09 | 5701-091-0836 | 4.28 ppm |
| 2018-04-11 | 5701-041-1107 | 0.909 ppm |
| 2018-04-11 | 5701-046-0826 | 0.923 ppm |
| 2018-04-11 | 5701-054-0711 | 0.901 ppm |
| 2018-04-12 | 5810-075-1255 | ND |
| 2018-04-16 | 5701-043-1016 | 1.15 ppm |
| 2018-04-16 | 5701-053-1435 | 0.842 ppm |
| 2018-04-16 | 5701-068-0835 | ND |
| 2018-04-17 | 5701-038-1058 | 0.609 ppm |
| 2018-04-17 | 5701-059-1250 | 4.03 ppm |
| 2018-04-17 | 5701-061-0845 | 0.655 ppm |
| 2018-05-01 | 5701-136-1111 | 0.502 ppm |
| 2018-05-07 | 5701-065-0930 | 0.765 ppm |
| 2018-05-07 | 5701-069-1054 | 0.564 ppm |
| 2018-05-07 | 5701-140-0815 | 0.574 ppm |
| 2018-05-09 | 5701-034-1040 | 1.60 ppm |
| 2018-05-09 | 5701-048-0904 | 6.57 ppm |
| 2018-05-14 | 5701-010-1414 | 4.06 ppm |
| 2018-05-14 | 5701-017-1030 | 4.92 ppm |
| 2018-05-14 | 5701-023-0745 | 1.88 ppm |
| 2018-05-14 | 5701-029-0805 | 3.41 ppm |
| 2018-05-14 | 5701-071-0805 | 5.18 ppm |
| 2018-05-15 | 5701-027-1041 | 4.12 ppm |
| 2018-05-22 | 5701-028-1017 | 0.918 ppm |
| 2018-05-22 | 5701-032-1040 | 0.647 ppm |
| 2018-05-22 | 5701-033-1331 | ND |
| 2018-05-22 | 5701-057-1152 | 1.10 ppm |
| 2018-05-22 | 5701-077-1114 | 0.997 ppm |
| 2018-05-23 | 5701-036-0840 | 3.37 ppm |
| 2018-05-29 | 5701-050-1257 | 2.18 ppm |
| 2018-05-29 | 5701-059-1115 | 4.25 ppm |
| 2018-05-30 | 5701-020-0852 | 1.16 ppm |
| 2018-06-04 | 5701-143-0445 | ND |
| 2018-06-05 | 5701-019-0830 | 2.71 ppm |
| 2018-06-06 | 5701-007-0920 | 2.76 ppm |
| 2018-06-12 | 5810-052-1312 | 3.70 ppm |
| 2018-06-13 | 5701-031-0920 | 3.10 ppm |
| 2018-06-18 | 5810-064-1247 | 0.470 ppm |
| 2018-06-19 | 5701-030-0812 | 1.75 ppm |
| 2018-06-19 | 5701-062-0742 | 1.26 ppm |
| 2018-06-20 | 5701-037-0837 | 0.800 ppm |
| 2018-06-20 | 5701-049-1321 | 1.79 ppm |
| 2018-06-20 | 5810-063-1154 | 6.90 ppm |
| 2018-06-20 | 5701-076-0850 | 1.11 ppm |
| 2018-06-27 | 5810-013-0520 | 4.70 ppm |
| 2018-07-09 | 5701-052-1153 | 4.26 ppm |
| 2018-07-09 | 5701-091-1159 | 4.30 ppm |
| 2018-07-17 | 5701-046-0830 | 0.810 ppm |
| 2018-07-18 | 5810-023-0830 | 1.20 ppm |
| 2018-07-23 | 5701-048-0930 | 6.16 ppm |
| 2018-08-06 | 5701-071-0848 | 5.09 ppm |
| 2018-08-13 | 5701-017-0805 | 5.05 ppm |
| 2018-08-15 | 5701-027-0906 | 2.97 ppm |
| 2018-08-15 | 5701-034-0833 | 0.939 ppm |
| 2018-08-15 | 5701-059-0825 | 5.91 ppm |
| 2018-08-15 | 5810-143-1201 | ND |
| 2018-09-17 | 5701-063-1159 | 6.10 ppm |
| 2018-10-09 | 5701-027-1115 | 4.04 ppm |
| 2018-10-09 | 5701-046-0935 | 0.816 ppm |
| 2018-10-09 | 5701-052-0845 | 4.28 ppm |
| 2018-10-09 | 5701-059-0920 | 5.82 ppm |
| 2018-10-09 | 5701-068-0915 | ND |
| 2018-10-09 | 5701-091-0836 | 4.36 ppm |
| 2018-10-15 | 5701-048-1015 | 6.53 ppm |
| 2018-10-16 | 5701-034-0825 | 0.886 ppm |
| 2018-10-17 | 5701-063-0836 | 6.03 ppm |
| 2018-10-30 | 5810-027-1253 | 2.30 ppm |
| 2018-10-31 | 5701-026-0855 | 0.788 ppm |
| 2018-10-31 | 5701-056-0930 | 2.67 ppm |
| 2018-11-20 | 5701-071-0840 | 5.17 ppm |
| 2018-11-27 | 5701-017-0945 | 5.19 ppm |
| 2019-01-09 | 5701-052-0900 | 4.49 ppm |
| 2019-01-09 | 5701-091-0902 | 4.71 ppm |
| 2019-01-29 | 5701-046-1022 | 0.889 ppm |
| 2019-01-30 | 5701-068-1031 | 0.491 ppm |
| 2019-02-11 | 5701-017-1130 | 5.16 ppm |
| 2019-02-11 | 5701-071-0911 | 5.02 ppm |
| 2019-02-20 | 5810-043-1253 | 0.840 ppm |
| 2019-02-20 | 5810-076-1257 | 0.840 ppm |
| 2019-03-11 | 5701-143-1118 | ND |
| 2019-03-13 | 5701-027-1230 | 4.88 ppm |
| 2019-03-13 | 5701-034-1010 | 1.94 ppm |
| 2019-03-13 | 5701-048-0634 | 6.61 ppm |
| 2019-03-26 | 5810-074-1211 | 0.690 ppm |
| 2019-03-27 | 5701-059-0908 | 3.64 ppm |
| 2019-04-02 | 2385-005-1210 | 3.40 ppm |
| 2019-04-02 | 2385-018-0946 | 2.80 ppm |
| 2019-04-03 | 2385-011-1005 | 1.90 ppm |
| 2019-04-03 | 2385-052-1307 | 4.30 ppm |
| 2019-04-03 | 2385-091-1311 | 3.70 ppm |
| 2019-04-08 | 2385-026-1000 | 0.700 ppm |
| 2019-04-08 | 2385-043-1200 | 1.000 ppm |
| 2019-04-08 | 2385-046-0805 | 0.800 ppm |
| 2019-04-10 | 2385-035-0728 | 0.500 ppm |
| 2019-04-10 | 2385-038-1158 | 0.700 ppm |
| 2019-04-10 | 5810-038-1205 | 0.550 ppm |
| 2019-04-11 | 5810-054-1201 | 0.590 ppm |
| 2019-04-15 | 2385-053-0808 | 0.800 ppm |
| 2019-04-15 | 2385-068-0911 | 0.300 ppm |
| 2019-04-15 | 2385-075-1227 | 0.500 ppm |
| 2019-04-16 | 5701-074-0928 | 0.953 ppm |
| 2019-04-17 | 5810-041-1202 | 0.620 ppm |
| 2019-04-17 | 5810-061-1230 | 0.470 ppm |
| 2019-05-08 | 5701-027-0715 | 3.70 ppm |
| 2019-05-08 | 5701-056-1200 | 4.78 ppm |
| 2019-05-08 | 5701-134-0915 | 0.672 ppm |
| 2019-05-13 | 5701-017-1106 | 5.13 ppm |
| 2019-05-13 | 5701-032-0733 | 0.678 ppm |
| 2019-05-13 | 5701-034-0800 | 1.01 ppm |
| 2019-05-13 | 5701-048-0715 | 6.53 ppm |
| 2019-05-13 | 5701-071-0803 | 5.07 ppm |
| 2019-05-14 | 5701-028-0715 | 1.18 ppm |
| 2019-05-14 | 5810-077-1200 | 0.830 ppm |
| 2019-05-15 | 5701-020-0742 | 1.05 ppm |
| 2019-05-15 | 5810-140-1202 | 0.430 ppm |
| 2019-05-20 | 5701-010-0855 | 3.91 ppm |
| 2019-05-20 | 5701-033-1246 | ND |
| 2019-05-20 | 5701-059-0830 | 5.59 ppm |
| 2019-05-20 | 5701-065-0852 | 0.794 ppm |
| 2019-05-20 | 5701-069-0922 | 0.587 ppm |
| 2019-05-22 | 5701-023-0710 | 1.18 ppm |
| 2019-05-22 | 5701-029-0700 | 3.55 ppm |
| 2019-05-22 | 5701-050-0830 | 2.32 ppm |
| 2019-05-22 | 5701-136-0800 | 0.730 ppm |
| 2019-05-29 | 5701-036-0845 | 3.69 ppm |
| 2019-05-29 | 5701-057-0801 | 1.06 ppm |
| 2019-06-10 | 5701-031-0745 | 3.05 ppm |
| 2019-06-11 | 5701-030-0640 | 1.85 ppm |
| 2019-06-12 | 5701-007-0844 | 2.12 ppm |
| 2019-06-12 | 5701-019-1008 | 2.79 ppm |
| 2019-06-17 | 5701-062-0705 | 1.20 ppm |
| 2019-06-17 | 5701-064-1035 | 0.633 ppm |
| 2019-06-17 | 5701-143-1029 | ND |
| 2019-06-18 | 5701-037-0800 | 1.00 ppm |
| 2019-06-18 | 5701-076-1112 | 1.14 ppm |
| 2019-06-19 | 5701-013-0552 | 5.35 ppm |
| 2019-07-02 | 5810-049-1249 | 3.20 ppm |
| 2019-07-16 | 5701-046-0736 | 0.888 ppm |
| 2019-07-16 | 5701-068-0733 | 0.461 ppm |
| 2019-07-17 | 5701-048-0802 | 6.60 ppm |
| 2019-07-22 | 5810-053-1250 | 0.680 ppm |
| 2019-07-29 | 5701-063-1209 | 9.55 ppm |
| 2019-08-05 | 5701-063-1330 | 8.27 ppm |
| 2019-08-06 | 5701-034-1240 | 0.903 ppm |
| 2019-08-06 | 5701-071-1016 | 4.48 ppm |
| 2019-08-12 | 5701-017-0802 | 5.06 ppm |
| 2019-08-12 | 5701-027-0912 | 2.32 ppm |
| 2019-08-27 | 5810-056-1232 | 2.20 ppm |
| 2019-08-27 | 5810-059-1201 | 5.30 ppm |
| 2019-09-03 | 5701-052-1403 | 5.80 ppm |
| 2019-09-03 | 5701-063-1140 | 9.60 ppm |
| 2019-09-03 | 5701-091-1407 | 1.21 ppm |
| 2019-09-04 | 5701-063-1140 | 9.04 ppm |
| 2019-09-10 | 5701-063-1319 | 8.07 ppm |
| 2019-09-16 | 5701-063-1300 | 8.12 ppm |
| 2019-09-17 | 5701-063-1315 | 7.91 ppm |
| 2019-10-08 | 5701-068-0916 | 0.492 ppm |
| 2019-10-14 | 5810-048-0816 | 4.20 ppm |
| 2019-10-16 | 5701-027-1055 | 2.23 ppm |
| 2019-10-28 | 5701-034-0949 | 0.894 ppm |
| 2019-10-28 | 5701-046-0855 | 0.854 ppm |
| 2019-10-28 | 5701-052-0947 | 4.30 ppm |
| 2019-10-28 | 5701-059-0915 | 5.85 ppm |
| 2019-10-28 | 5701-091-0948 | 4.35 ppm |
| 2019-10-29 | 5810-057-1223 | 0.800 ppm |
| 2019-11-20 | 2385-017-0845 | 4.90 ppm |
| 2019-12-04 | 5701-071-0951 | 2.75 ppm |