Fluoride
Ventura Water Department
Fluoride occurs naturally in surface and groundwater and is also added to drinking water by many water systems. Read More.
Fluoride has been promoted as a chemical that reduces dental cavities. Yet it is now well-established that fluoride primarily exerts its protective effects through topical mechanisms, such as sodium fluoride in toothpaste and mouthwash. In contrast, long-term ingestion of fluoride in water increases dental fluorosis, which includes mottling, pitting and weakening of the teeth. EPA's maximum legal limit is set at 4 parts per million (ppm) to prevent skeletal fluorosis, a condition where bones become brittle and more susceptible to fractures, although these effects may occur at lower doses.
Even fluoride levels of 0.7 ppm, the amount of fluoride in drinking water recommended by the U.S. Public Health Service, can result in too much fluoride for bottle-fed babies. EWG recommends that caregivers mix baby formula with fluoride-free water. The National Toxicology Program is investigating the potential for low doses of fluoride to alter thyroid function and childhood brain development.
634
Samples
1
Samples exceeding legal limit (MCL)
0
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 | 0.542 ppm | 100 | 100 | 0.430 ppm - 0.690 ppm |
| 2015 | 0.511 ppm | 96 | 96 | 0.410 ppm - 0.680 ppm |
| 2016 | 0.480 ppm | 111 | 111 | 0.320 ppm - 0.620 ppm |
| 2017 | 0.479 ppm | 118 | 118 | 0.370 ppm - 0.620 ppm |
| 2018 | 0.528 ppm | 136 | 136 | 0.1000 ppm - 7.15 ppm |
| 2019 | 0.463 ppm | 73 | 73 | 0.240 ppm - 0.610 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 4 ppm
ppm = parts per million
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-05 | 2911-007-1140 | 0.630 ppm |
| 2014-01-06 | 2911-002-1343 | 0.490 ppm |
| 2014-01-06 | 2911-006-1130 | 0.610 ppm |
| 2014-01-06 | 2911-013-1024 | 0.560 ppm |
| 2014-01-06 | 2911-025-0945 | 0.530 ppm |
| 2014-01-06 | 2911-026-0935 | 0.530 ppm |
| 2014-01-06 | 2911-027-0950 | 0.540 ppm |
| 2014-01-06 | 2911-031-1000 | 0.490 ppm |
| 2014-02-03 | 2911-002-1318 | 0.540 ppm |
| 2014-02-03 | 2911-006-0900 | 0.640 ppm |
| 2014-02-03 | 2911-007-0910 | 0.680 ppm |
| 2014-02-03 | 2911-013-1006 | 0.620 ppm |
| 2014-02-03 | 2911-025-0945 | 0.570 ppm |
| 2014-02-03 | 2911-026-0950 | 0.590 ppm |
| 2014-02-03 | 2911-027-0930 | 0.570 ppm |
| 2014-03-10 | 2911-002-1311 | 0.510 ppm |
| 2014-03-10 | 2911-006-1220 | 0.630 ppm |
| 2014-03-10 | 2911-007-1210 | 0.680 ppm |
| 2014-03-10 | 2911-013-0949 | 0.620 ppm |
| 2014-03-10 | 2911-015-1010 | 0.500 ppm |
| 2014-03-10 | 2911-025-1155 | 0.550 ppm |
| 2014-03-10 | 2911-026-1155 | 0.590 ppm |
| 2014-03-10 | 2911-027-1140 | 0.550 ppm |
| 2014-03-10 | 2911-028-1015 | 0.520 ppm |
| 2014-04-07 | 2911-002-1312 | 0.520 ppm |
| 2014-04-07 | 2911-006-1340 | 0.640 ppm |
| 2014-04-07 | 2911-007-1345 | 0.680 ppm |
| 2014-04-07 | 2911-013-1001 | 0.620 ppm |
| 2014-04-07 | 2911-015-1055 | 0.520 ppm |
| 2014-04-07 | 2911-025-1300 | 0.550 ppm |
| 2014-04-07 | 2911-026-1300 | 0.570 ppm |
| 2014-04-07 | 2911-027-1315 | 0.570 ppm |
| 2014-04-07 | 2911-028-1055 | 0.520 ppm |
| 2014-04-07 | 2911-031-1325 | 0.510 ppm |
| 2014-05-05 | 2911-002-1304 | 0.500 ppm |
| 2014-05-05 | 2911-006-1310 | 0.610 ppm |
| 2014-05-05 | 2911-007-1300 | 0.500 ppm |
| 2014-05-05 | 2911-013-0953 | 0.510 ppm |
| 2014-05-05 | 2911-015-1125 | 0.500 ppm |
| 2014-05-05 | 2911-025-1200 | 0.540 ppm |
| 2014-05-05 | 2911-026-1205 | 0.560 ppm |
| 2014-05-05 | 2911-027-1225 | 0.530 ppm |
| 2014-05-05 | 2911-028-1125 | 0.510 ppm |
| 2014-05-05 | 2911-031-1240 | 0.500 ppm |
| 2014-06-02 | 2911-002-1318 | 0.480 ppm |
| 2014-06-02 | 2911-006-1240 | 0.620 ppm |
| 2014-06-02 | 2911-007-1250 | 0.600 ppm |
| 2014-06-02 | 2911-013-0953 | 0.600 ppm |
| 2014-06-02 | 2911-015-1030 | 0.480 ppm |
| 2014-06-02 | 2911-025-1240 | 0.490 ppm |
| 2014-06-02 | 2911-026-1240 | 0.600 ppm |
| 2014-06-02 | 2911-028-1025 | 0.510 ppm |
| 2014-06-02 | 2911-031-1110 | 0.480 ppm |
| 2014-07-07 | 2911-002-1400 | 0.530 ppm |
| 2014-07-07 | 2911-006-1040 | 0.650 ppm |
| 2014-07-07 | 2911-007-1050 | 0.690 ppm |
| 2014-07-07 | 2911-013-1100 | 0.630 ppm |
| 2014-07-07 | 2911-015-0945 | 0.500 ppm |
| 2014-07-07 | 2911-025-1020 | 0.520 ppm |
| 2014-07-07 | 2911-026-1020 | 0.630 ppm |
| 2014-07-07 | 2911-028-0950 | 0.540 ppm |
| 2014-07-07 | 2911-031-1010 | 0.520 ppm |
| 2014-08-04 | 2911-002-1340 | 0.520 ppm |
| 2014-08-04 | 2911-006-1440 | 0.610 ppm |
| 2014-08-04 | 2911-007-1450 | 0.620 ppm |
| 2014-08-04 | 2911-013-1035 | 0.610 ppm |
| 2014-08-04 | 2911-015-0950 | 0.470 ppm |
| 2014-08-04 | 2911-025-1105 | 0.480 ppm |
| 2014-08-04 | 2911-026-1105 | 0.530 ppm |
| 2014-08-04 | 2911-028-0945 | 0.500 ppm |
| 2014-08-04 | 2911-031-1330 | 0.510 ppm |
| 2014-09-08 | 2911-002-1342 | 0.460 ppm |
| 2014-09-08 | 2911-006-1250 | 0.560 ppm |
| 2014-09-08 | 2911-007-1255 | 0.640 ppm |
| 2014-09-08 | 2911-013-1016 | 0.540 ppm |
| 2014-09-08 | 2911-015-1025 | 0.440 ppm |
| 2014-09-08 | 2911-025-1200 | 0.440 ppm |
| 2014-09-08 | 2911-026-1200 | 0.450 ppm |
| 2014-09-08 | 2911-028-1025 | 0.450 ppm |
| 2014-09-08 | 2911-031-1045 | 0.430 ppm |
| 2014-10-06 | 2911-002-1404 | 0.490 ppm |
| 2014-10-06 | 2911-006-0915 | 0.580 ppm |
| 2014-10-06 | 2911-007-0925 | 0.630 ppm |
| 2014-10-06 | 2911-013-1033 | 0.530 ppm |
| 2014-10-06 | 2911-015-1125 | 0.490 ppm |
| 2014-10-06 | 2911-025-1005 | 0.500 ppm |
| 2014-10-06 | 2911-026-1010 | 0.520 ppm |
| 2014-10-06 | 2911-027-0950 | 0.540 ppm |
| 2014-10-06 | 2911-028-1130 | 0.480 ppm |
| 2014-10-06 | 2911-031-0940 | 0.470 ppm |
| 2014-12-01 | 2911-002-1402 | 0.470 ppm |
| 2014-12-01 | 2911-006-1330 | 0.570 ppm |
| 2014-12-01 | 2911-007-1340 | 0.600 ppm |
| 2014-12-01 | 2911-013-1037 | 0.530 ppm |
| 2014-12-01 | 2911-015-1030 | 0.450 ppm |
| 2014-12-01 | 2911-025-1130 | 0.450 ppm |
| 2014-12-01 | 2911-026-1130 | 0.490 ppm |
| 2014-12-01 | 2911-027-1245 | 0.510 ppm |
| 2014-12-01 | 2911-028-1035 | 0.460 ppm |
| 2014-12-01 | 2911-031-1240 | 0.440 ppm |
| 2015-01-05 | 2911-002-1331 | 0.500 ppm |
| 2015-01-05 | 2911-006-1145 | 0.600 ppm |
| 2015-01-05 | 2911-007-1100 | 0.650 ppm |
| 2015-01-05 | 2911-013-1017 | 0.600 ppm |
| 2015-01-05 | 2911-015-0945 | 0.490 ppm |
| 2015-01-05 | 2911-025-1020 | 0.510 ppm |
| 2015-01-05 | 2911-026-1020 | 0.600 ppm |
| 2015-01-05 | 2911-027-1030 | 0.530 ppm |
| 2015-01-05 | 2911-028-0955 | 0.500 ppm |
| 2015-01-05 | 2911-031-1040 | 0.480 ppm |
| 2015-02-02 | 2911-002-1306 | 0.500 ppm |
| 2015-02-02 | 2911-006-0920 | 0.630 ppm |
| 2015-02-02 | 2911-007-0940 | 0.650 ppm |
| 2015-02-02 | 2911-013-1014 | 0.600 ppm |
| 2015-02-02 | 2911-015-1010 | 0.510 ppm |
| 2015-02-02 | 2911-025-1020 | 0.550 ppm |
| 2015-02-02 | 2911-026-1030 | 0.570 ppm |
| 2015-02-02 | 2911-027-1045 | 0.550 ppm |
| 2015-02-02 | 2911-028-1000 | 0.530 ppm |
| 2015-02-02 | 2911-031-1100 | 0.490 ppm |
| 2015-03-02 | 2911-002-1309 | 0.490 ppm |
| 2015-03-02 | 2911-006-0940 | 0.630 ppm |
| 2015-03-02 | 2911-007-0950 | 0.680 ppm |
| 2015-03-02 | 2911-013-1013 | 0.640 ppm |
| 2015-03-02 | 2911-015-1105 | 0.520 ppm |
| 2015-03-02 | 2911-025-1040 | 0.510 ppm |
| 2015-03-02 | 2911-026-1040 | 0.530 ppm |
| 2015-03-02 | 2911-027-1020 | 0.580 ppm |
| 2015-03-02 | 2911-028-1105 | 0.520 ppm |
| 2015-03-02 | 2911-031-1005 | 0.500 ppm |
| 2015-04-06 | 2911-006-1039 | 0.580 ppm |
| 2015-04-06 | 2911-007-1048 | 0.620 ppm |
| 2015-04-06 | 2911-013-0945 | 0.540 ppm |
| 2015-04-06 | 2911-015-1212 | 0.450 ppm |
| 2015-04-06 | 2911-025-1148 | 0.480 ppm |
| 2015-04-06 | 2911-026-1155 | 0.550 ppm |
| 2015-04-06 | 2911-027-1115 | 0.500 ppm |
| 2015-04-06 | 2911-028-1213 | 0.500 ppm |
| 2015-04-06 | 2911-031-1130 | 0.460 ppm |
| 2015-05-04 | 2911-002-1339 | 0.440 ppm |
| 2015-05-04 | 2911-006-1110 | 0.510 ppm |
| 2015-05-04 | 2911-007-1120 | 0.580 ppm |
| 2015-05-04 | 2911-013-1032 | 0.510 ppm |
| 2015-05-04 | 2911-015-1015 | 0.420 ppm |
| 2015-05-04 | 2911-025-1035 | 0.450 ppm |
| 2015-05-04 | 2911-026-1030 | 0.460 ppm |
| 2015-05-04 | 2911-027-1055 | 0.470 ppm |
| 2015-05-04 | 2911-028-1010 | 0.430 ppm |
| 2015-05-04 | 2911-031-1100 | 0.410 ppm |
| 2015-06-01 | 2911-002-1329 | 0.430 ppm |
| 2015-06-01 | 2911-006-1140 | 0.550 ppm |
| 2015-06-01 | 2911-007-1145 | 0.600 ppm |
| 2015-06-01 | 2911-013-1007 | 0.550 ppm |
| 2015-06-01 | 2911-015-1115 | 0.440 ppm |
| 2015-06-01 | 2911-025-0910 | 0.480 ppm |
| 2015-06-01 | 2911-026-0915 | 0.490 ppm |
| 2015-06-01 | 2911-027-0845 | 0.490 ppm |
| 2015-06-01 | 2911-028-1005 | 0.430 ppm |
| 2015-06-01 | 2911-031-0855 | 0.440 ppm |
| 2015-07-06 | 2911-002-1315 | 0.450 ppm |
| 2015-07-06 | 2911-006-1110 | 0.550 ppm |
| 2015-07-06 | 2911-007-1100 | 0.590 ppm |
| 2015-07-06 | 2911-013-1008 | 0.540 ppm |
| 2015-07-06 | 2911-025-1045 | 0.430 ppm |
| 2015-07-06 | 2911-026-1045 | 0.540 ppm |
| 2015-07-06 | 2911-028-0945 | 0.420 ppm |
| 2015-07-06 | 2911-031-1020 | 0.430 ppm |
| 2015-09-08 | 2911-002-1307 | 0.450 ppm |
| 2015-09-08 | 2911-006-1335 | 0.560 ppm |
| 2015-09-08 | 2911-007-1330 | 0.600 ppm |
| 2015-09-08 | 2911-013-1017 | 0.580 ppm |
| 2015-09-08 | 2911-028-1310 | 0.430 ppm |
| 2015-10-05 | 2911-002-1150 | 0.460 ppm |
| 2015-10-05 | 2911-006-0912 | 0.560 ppm |
| 2015-10-05 | 2911-007-0920 | 0.600 ppm |
| 2015-10-05 | 2911-013-0831 | 0.520 ppm |
| 2015-10-05 | 2911-025-1115 | 0.490 ppm |
| 2015-10-05 | 2911-026-1115 | 0.510 ppm |
| 2015-10-05 | 2911-027-0945 | 0.490 ppm |
| 2015-10-05 | 2911-028-1040 | 0.410 ppm |
| 2015-11-02 | 2911-002-1307 | 0.450 ppm |
| 2015-11-02 | 2911-006-0910 | 0.550 ppm |
| 2015-11-02 | 2911-007-0918 | 0.560 ppm |
| 2015-11-02 | 2911-013-0937 | 0.420 ppm |
| 2015-11-02 | 2911-025-1030 | 0.450 ppm |
| 2015-11-02 | 2911-026-1030 | 0.470 ppm |
| 2015-11-02 | 2911-027-0935 | 0.460 ppm |
| 2015-11-02 | 2911-028-1100 | 0.410 ppm |
| 2015-11-02 | 2911-031-0945 | 0.440 ppm |
| 2015-12-08 | 2911-002-1244 | 0.450 ppm |
| 2015-12-08 | 2911-006-1205 | 0.540 ppm |
| 2015-12-08 | 2911-013-0936 | 0.510 ppm |
| 2015-12-08 | 2911-025-1010 | 0.470 ppm |
| 2015-12-08 | 2911-026-1015 | 0.490 ppm |
| 2015-12-08 | 2911-027-0955 | 0.470 ppm |
| 2015-12-08 | 2911-028-0855 | 0.410 ppm |
| 2016-01-04 | 2911-002-1222 | 0.460 ppm |
| 2016-01-04 | 2911-006-0900 | 0.530 ppm |
| 2016-01-04 | 2911-013-0919 | 0.500 ppm |
| 2016-01-04 | 2911-025-0940 | 0.420 ppm |
| 2016-01-04 | 2911-026-0945 | 0.480 ppm |
| 2016-01-04 | 2911-027-0926 | 0.470 ppm |
| 2016-01-04 | 2911-028-1055 | 0.390 ppm |
| 2016-01-04 | 2911-045-1058 | 0.360 ppm |
| 2016-02-02 | 2911-002-1235 | 0.430 ppm |
| 2016-02-02 | 2911-007-0910 | 0.500 ppm |
| 2016-02-02 | 2911-013-0934 | 0.550 ppm |
| 2016-02-02 | 2911-025-1015 | 0.470 ppm |
| 2016-02-02 | 2911-026-1020 | 0.460 ppm |
| 2016-02-02 | 2911-027-1000 | 0.410 ppm |
| 2016-02-02 | 2911-028-1120 | 0.400 ppm |
| 2016-02-02 | 2911-045-1120 | 0.370 ppm |
| 2016-03-07 | 2911-002-1302 | 0.440 ppm |
| 2016-03-07 | 2911-006-0930 | 0.550 ppm |
| 2016-03-07 | 2911-007-0940 | 0.590 ppm |
| 2016-03-07 | 2911-013-0950 | 0.570 ppm |
| 2016-03-07 | 2911-025-1050 | 0.490 ppm |
| 2016-03-07 | 2911-026-1055 | 0.470 ppm |
| 2016-03-07 | 2911-027-1125 | 0.470 ppm |
| 2016-03-07 | 2911-028-1220 | 0.420 ppm |
| 2016-03-07 | 2911-045-1220 | 0.400 ppm |
| 2016-04-04 | 2911-002-1300 | 0.440 ppm |
| 2016-04-04 | 2911-006-1100 | 0.520 ppm |
| 2016-04-04 | 2911-007-1115 | 0.570 ppm |
| 2016-04-04 | 2911-013-0956 | 0.520 ppm |
| 2016-04-04 | 2911-025-1045 | 0.470 ppm |
| 2016-04-04 | 2911-026-1050 | 0.490 ppm |
| 2016-04-04 | 2911-027-1030 | 0.470 ppm |
| 2016-04-04 | 2911-028-1000 | 0.410 ppm |
| 2016-04-04 | 2911-045-1000 | 0.390 ppm |
| 2016-05-02 | 2911-002-1245 | 0.430 ppm |
| 2016-05-02 | 2911-006-1115 | 0.520 ppm |
| 2016-05-02 | 2911-007-1125 | 0.570 ppm |
| 2016-05-02 | 2911-013-0928 | 0.520 ppm |
| 2016-05-02 | 2911-025-1145 | 0.460 ppm |
| 2016-05-02 | 2911-026-1150 | 0.470 ppm |
| 2016-05-02 | 2911-027-1135 | 0.460 ppm |
| 2016-05-02 | 2911-028-1020 | 0.400 ppm |
| 2016-05-02 | 2911-045-1020 | 0.380 ppm |
| 2016-06-06 | 2911-002-1209 | 0.450 ppm |
| 2016-06-06 | 2911-006-1145 | 0.540 ppm |
| 2016-06-06 | 2911-007-1130 | 0.590 ppm |
| 2016-06-06 | 2911-013-0848 | 0.560 ppm |
| 2016-06-06 | 2911-025-1035 | 0.470 ppm |
| 2016-06-06 | 2911-026-1048 | 0.480 ppm |
| 2016-06-06 | 2911-027-1110 | 0.460 ppm |
| 2016-06-06 | 2911-028-1010 | 0.400 ppm |
| 2016-06-06 | 2911-045-1010 | 0.400 ppm |
| 2016-07-11 | 2911-002-1225 | 0.410 ppm |
| 2016-07-11 | 2911-006-0915 | 0.480 ppm |
| 2016-07-11 | 2911-007-0925 | 0.530 ppm |
| 2016-07-11 | 2911-013-0946 | 0.560 ppm |
| 2016-07-11 | 2911-025-1015 | 0.490 ppm |
| 2016-07-11 | 2911-026-1025 | 0.520 ppm |
| 2016-07-11 | 2911-027-0940 | 0.440 ppm |
| 2016-07-11 | 2911-028-1135 | 0.420 ppm |
| 2016-07-11 | 2911-045-1135 | 0.410 ppm |
| 2016-08-01 | 2911-002-1245 | 0.440 ppm |
| 2016-08-01 | 2911-006-1245 | 0.560 ppm |
| 2016-08-01 | 2911-007-1240 | 0.600 ppm |
| 2016-08-01 | 2911-013-0927 | 0.520 ppm |
| 2016-08-01 | 2911-025-1140 | 0.470 ppm |
| 2016-08-01 | 2911-026-1140 | 0.480 ppm |
| 2016-08-01 | 2911-027-1215 | 0.490 ppm |
| 2016-08-01 | 2911-028-1110 | 0.430 ppm |
| 2016-08-01 | 2911-031-1220 | 0.550 ppm |
| 2016-08-01 | 2911-045-1110 | 0.410 ppm |
| 2016-09-12 | 2911-002-1237 | 0.420 ppm |
| 2016-09-12 | 2911-006-1235 | 0.520 ppm |
| 2016-09-12 | 2911-007-1225 | 0.560 ppm |
| 2016-09-12 | 2911-013-0957 | 0.520 ppm |
| 2016-09-12 | 2911-025-1130 | 0.460 ppm |
| 2016-09-12 | 2911-026-1130 | 0.490 ppm |
| 2016-09-12 | 2911-027-1150 | 0.450 ppm |
| 2016-09-12 | 2911-028-1100 | 0.400 ppm |
| 2016-09-12 | 2911-031-1200 | 0.370 ppm |
| 2016-09-12 | 2911-045-1100 | 0.320 ppm |
| 2016-10-10 | 2911-002-1255 | 0.560 ppm |
| 2016-10-10 | 2911-006-1225 | 0.540 ppm |
| 2016-10-10 | 2911-007-1255 | 0.590 ppm |
| 2016-10-10 | 2911-013-1002 | 0.530 ppm |
| 2016-10-10 | 2911-025-1110 | 0.480 ppm |
| 2016-10-10 | 2911-026-1115 | 0.470 ppm |
| 2016-10-10 | 2911-027-1150 | 0.490 ppm |
| 2016-10-10 | 2911-028-1035 | 0.410 ppm |
| 2016-10-10 | 2911-031-1205 | 0.460 ppm |
| 2016-10-10 | 2911-045-1035 | 0.390 ppm |
| 2016-11-07 | 2911-002-1652 | 0.500 ppm |
| 2016-11-07 | 2911-006-1052 | 0.580 ppm |
| 2016-11-07 | 2911-007-1100 | 0.620 ppm |
| 2016-11-07 | 2911-013-1050 | 0.550 ppm |
| 2016-11-07 | 2911-025-1130 | 0.480 ppm |
| 2016-11-07 | 2911-026-1135 | 0.500 ppm |
| 2016-11-07 | 2911-027-1127 | 0.510 ppm |
| 2016-11-07 | 2911-028-1225 | 0.430 ppm |
| 2016-11-07 | 2911-031-1118 | 0.470 ppm |
| 2016-11-07 | 2911-045-1228 | 0.420 ppm |
| 2016-12-05 | 2911-002-1328 | 0.480 ppm |
| 2016-12-05 | 2911-006-0850 | 0.580 ppm |
| 2016-12-05 | 2911-007-0905 | 0.590 ppm |
| 2016-12-05 | 2911-013-1016 | 0.570 ppm |
| 2016-12-05 | 2911-025-1100 | 0.510 ppm |
| 2016-12-05 | 2911-026-1100 | 0.520 ppm |
| 2016-12-05 | 2911-027-0940 | 0.500 ppm |
| 2016-12-05 | 2911-028-1020 | 0.460 ppm |
| 2016-12-05 | 2911-031-0925 | 0.480 ppm |
| 2016-12-05 | 2911-045-1020 | 0.440 ppm |
| 2017-01-09 | 2911-002-1241 | 0.460 ppm |
| 2017-01-09 | 2911-006-1220 | 0.560 ppm |
| 2017-01-09 | 2911-007-1230 | 0.610 ppm |
| 2017-01-09 | 2911-013-0926 | 0.590 ppm |
| 2017-01-09 | 2911-025-1155 | 0.460 ppm |
| 2017-01-09 | 2911-026-1157 | 0.460 ppm |
| 2017-01-09 | 2911-028-0955 | 0.440 ppm |
| 2017-01-09 | 2911-031-1145 | 0.450 ppm |
| 2017-01-09 | 2911-045-0950 | 0.420 ppm |
| 2017-02-06 | 2911-002-1347 | 0.460 ppm |
| 2017-02-06 | 2911-006-1255 | 0.550 ppm |
| 2017-02-06 | 2911-007-1310 | 0.610 ppm |
| 2017-02-06 | 2911-013-1037 | 0.550 ppm |
| 2017-02-06 | 2911-025-0943 | 0.460 ppm |
| 2017-02-06 | 2911-026-0946 | 0.450 ppm |
| 2017-02-06 | 2911-028-0920 | 0.420 ppm |
| 2017-02-06 | 2911-031-1015 | 0.440 ppm |
| 2017-02-06 | 2911-045-0918 | 0.390 ppm |
| 2017-03-06 | 2911-002-1334 | 0.480 ppm |
| 2017-03-06 | 2911-006-1005 | 0.580 ppm |
| 2017-03-06 | 2911-013-1019 | 0.540 ppm |
| 2017-03-06 | 2911-025-1215 | 0.450 ppm |
| 2017-03-06 | 2911-026-1215 | 0.470 ppm |
| 2017-03-06 | 2911-028-0910 | 0.440 ppm |
| 2017-03-06 | 2911-031-1200 | 0.450 ppm |
| 2017-03-06 | 2911-045-0910 | 0.420 ppm |
| 2017-04-03 | 2911-002-1323 | 0.470 ppm |
| 2017-04-03 | 2911-006-1126 | 0.560 ppm |
| 2017-04-03 | 2911-007-1134 | 0.620 ppm |
| 2017-04-03 | 2911-013-1009 | 0.560 ppm |
| 2017-04-03 | 2911-025-1105 | 0.440 ppm |
| 2017-04-03 | 2911-026-1106 | 0.460 ppm |
| 2017-04-03 | 2911-028-1026 | 0.430 ppm |
| 2017-04-03 | 2911-031-1050 | 0.450 ppm |
| 2017-04-03 | 2911-045-1025 | 0.420 ppm |
| 2017-05-01 | 2911-002-1321 | 0.460 ppm |
| 2017-05-01 | 2911-006-1112 | 0.540 ppm |
| 2017-05-01 | 2911-007-1118 | 0.590 ppm |
| 2017-05-01 | 2911-013-1005 | 0.530 ppm |
| 2017-05-01 | 2911-015-1015 | 0.470 ppm |
| 2017-05-01 | 2911-025-1032 | 0.420 ppm |
| 2017-05-01 | 2911-026-1038 | 0.430 ppm |
| 2017-05-01 | 2911-028-0949 | 0.410 ppm |
| 2017-05-01 | 2911-031-1055 | 0.430 ppm |
| 2017-05-01 | 2911-045-0947 | 0.390 ppm |
| 2017-06-05 | 2911-002-1419 | 0.480 ppm |
| 2017-06-05 | 2911-006-1100 | 0.550 ppm |
| 2017-06-05 | 2911-007-1109 | 0.600 ppm |
| 2017-06-05 | 2911-013-1047 | 0.540 ppm |
| 2017-06-05 | 2911-015-0925 | 0.430 ppm |
| 2017-06-05 | 2911-025-1025 | 0.440 ppm |
| 2017-06-05 | 2911-026-1030 | 0.460 ppm |
| 2017-06-05 | 2911-028-0930 | 0.460 ppm |
| 2017-06-05 | 2911-031-0953 | 0.460 ppm |
| 2017-06-05 | 2911-045-1005 | 0.490 ppm |
| 2017-07-03 | 2911-002-1233 | 0.480 ppm |
| 2017-07-03 | 2911-006-1415 | 0.550 ppm |
| 2017-07-03 | 2911-007-1405 | 0.590 ppm |
| 2017-07-03 | 2911-013-0916 | 0.590 ppm |
| 2017-07-03 | 2911-015-0910 | 0.440 ppm |
| 2017-07-03 | 2911-025-1140 | 0.430 ppm |
| 2017-07-03 | 2911-026-1145 | 0.450 ppm |
| 2017-07-03 | 2911-028-1050 | 0.420 ppm |
| 2017-07-03 | 2911-031-1112 | 0.440 ppm |
| 2017-07-03 | 2911-045-1050 | 0.400 ppm |
| 2017-07-13 | 2911-027-0830 | 0.480 ppm |
| 2017-08-07 | 2911-002-1337 | 0.550 ppm |
| 2017-08-07 | 2911-006-0825 | 0.600 ppm |
| 2017-08-07 | 2911-007-0840 | 0.620 ppm |
| 2017-08-07 | 2911-013-1010 | 0.570 ppm |
| 2017-08-07 | 2911-015-0842 | 0.500 ppm |
| 2017-08-07 | 2911-025-0950 | 0.500 ppm |
| 2017-08-07 | 2911-026-1000 | 0.510 ppm |
| 2017-08-07 | 2911-027-0935 | 0.580 ppm |
| 2017-08-07 | 2911-028-0856 | 0.510 ppm |
| 2017-08-07 | 2911-031-0920 | 0.500 ppm |
| 2017-08-07 | 2911-045-0900 | 0.510 ppm |
| 2017-09-05 | 2911-002-1258 | 0.450 ppm |
| 2017-09-05 | 2911-007-0940 | 0.570 ppm |
| 2017-09-05 | 2911-013-0939 | 0.590 ppm |
| 2017-09-05 | 2911-015-1245 | 0.450 ppm |
| 2017-09-05 | 2911-025-1025 | 0.450 ppm |
| 2017-09-05 | 2911-026-1030 | 0.480 ppm |
| 2017-09-05 | 2911-027-1010 | 0.490 ppm |
| 2017-09-05 | 2911-028-0840 | 0.390 ppm |
| 2017-09-05 | 2911-031-1000 | 0.430 ppm |
| 2017-09-05 | 2911-045-0838 | 0.400 ppm |
| 2017-10-02 | 2911-002-1418 | 0.450 ppm |
| 2017-10-02 | 2911-013-1054 | 0.580 ppm |
| 2017-10-02 | 2911-015-0850 | 0.420 ppm |
| 2017-10-02 | 2911-025-1030 | 0.470 ppm |
| 2017-10-02 | 2911-026-1030 | 0.470 ppm |
| 2017-10-02 | 2911-027-1015 | 0.480 ppm |
| 2017-10-02 | 2911-028-0857 | 0.410 ppm |
| 2017-10-02 | 2911-031-1000 | 0.380 ppm |
| 2017-10-02 | 2911-045-0857 | 0.410 ppm |
| 2017-11-06 | 2911-002-1406 | 0.470 ppm |
| 2017-11-06 | 2911-006-0820 | 0.550 ppm |
| 2017-11-06 | 2911-007-0830 | 0.560 ppm |
| 2017-11-06 | 2911-013-1038 | 0.520 ppm |
| 2017-11-06 | 2911-015-0925 | 0.440 ppm |
| 2017-11-06 | 2911-025-1015 | 0.450 ppm |
| 2017-11-06 | 2911-026-1015 | 0.460 ppm |
| 2017-11-06 | 2911-027-0850 | 0.470 ppm |
| 2017-11-06 | 2911-028-1333 | 0.410 ppm |
| 2017-11-06 | 2911-031-0900 | 0.440 ppm |
| 2017-11-06 | 2911-045-1330 | 0.400 ppm |
| 2017-12-04 | 2911-002-1351 | 0.430 ppm |
| 2017-12-04 | 2911-006-0825 | 0.510 ppm |
| 2017-12-04 | 2911-007-0840 | 0.530 ppm |
| 2017-12-04 | 2911-013-1010 | 0.470 ppm |
| 2017-12-04 | 2911-015-0935 | 0.410 ppm |
| 2017-12-04 | 2911-025-1050 | 0.420 ppm |
| 2017-12-04 | 2911-026-1055 | 0.440 ppm |
| 2017-12-04 | 2911-027-0900 | 0.440 ppm |
| 2017-12-04 | 2911-028-1320 | 0.390 ppm |
| 2017-12-04 | 2911-031-0915 | 0.410 ppm |
| 2017-12-04 | 2911-045-1315 | 0.370 ppm |
| 2018-01-08 | 2911-002-1349 | 0.430 ppm |
| 2018-01-08 | 2911-006-0925 | 0.510 ppm |
| 2018-01-08 | 2911-007-1331 | 0.530 ppm |
| 2018-01-08 | 2911-013-1023 | 0.510 ppm |
| 2018-01-08 | 2911-015-0820 | 0.420 ppm |
| 2018-01-08 | 2911-025-1040 | 0.430 ppm |
| 2018-01-08 | 2911-026-1050 | 0.450 ppm |
| 2018-01-08 | 2911-027-1005 | 0.450 ppm |
| 2018-01-08 | 2911-028-1300 | 0.400 ppm |
| 2018-01-08 | 2911-031-1020 | 0.400 ppm |
| 2018-01-08 | 2911-045-1255 | 0.370 ppm |
| 2018-02-05 | 2911-002-1420 | 0.420 ppm |
| 2018-02-05 | 2911-006-0827 | 0.510 ppm |
| 2018-02-05 | 2911-007-0838 | 0.510 ppm |
| 2018-02-05 | 2911-013-1024 | 0.510 ppm |
| 2018-02-05 | 2911-015-0830 | 0.430 ppm |
| 2018-02-05 | 2911-025-1123 | 0.410 ppm |
| 2018-02-05 | 2911-026-1115 | 0.430 ppm |
| 2018-02-05 | 2911-027-0950 | 0.440 ppm |
| 2018-02-05 | 2911-028-1030 | 0.380 ppm |
| 2018-02-05 | 2911-031-0942 | 0.390 ppm |
| 2018-02-05 | 2911-045-1035 | 0.360 ppm |
| 2018-03-05 | 2911-002-1339 | 0.450 ppm |
| 2018-03-05 | 2911-006-0854 | 0.530 ppm |
| 2018-03-05 | 2911-007-0900 | 0.550 ppm |
| 2018-03-05 | 2911-013-1039 | 0.510 ppm |
| 2018-03-05 | 2911-015-0920 | 0.430 ppm |
| 2018-03-05 | 2911-025-1013 | 0.430 ppm |
| 2018-03-05 | 2911-026-1015 | 0.430 ppm |
| 2018-03-05 | 2911-027-1000 | 0.480 ppm |
| 2018-03-05 | 2911-028-1205 | 0.380 ppm |
| 2018-03-05 | 2911-031-0950 | 0.1000 ppm |
| 2018-03-05 | 2911-045-1210 | 0.400 ppm |
| 2018-04-02 | 2911-002-1311 | 0.440 ppm |
| 2018-04-02 | 2911-002-1312 | 0.440 ppm |
| 2018-04-02 | 2911-006-0825 | 0.550 ppm |
| 2018-04-02 | 2911-006-1312 | 0.550 ppm |
| 2018-04-02 | 2911-007-1312 | 0.590 ppm |
| 2018-04-02 | 2911-013-1024 | 0.580 ppm |
| 2018-04-02 | 2911-013-1312 | 0.580 ppm |
| 2018-04-02 | 2911-015-0900 | 0.470 ppm |
| 2018-04-02 | 2911-015-1312 | 0.470 ppm |
| 2018-04-02 | 2911-025-1010 | 0.440 ppm |
| 2018-04-02 | 2911-025-1312 | 0.440 ppm |
| 2018-04-02 | 2911-026-1010 | 0.520 ppm |
| 2018-04-02 | 2911-026-1312 | 0.520 ppm |
| 2018-04-02 | 2911-027-1050 | 0.470 ppm |
| 2018-04-02 | 2911-027-1312 | 0.470 ppm |
| 2018-04-02 | 2911-028-1312 | 0.460 ppm |
| 2018-04-02 | 2911-031-1035 | 0.440 ppm |
| 2018-04-02 | 2911-031-1312 | 0.440 ppm |
| 2018-04-02 | 2911-045-1312 | 0.360 ppm |
| 2018-04-02 | 2911-045-1335 | 0.360 ppm |
| 2018-05-07 | 2911-002-1317 | 0.490 ppm |
| 2018-05-07 | 2911-006-0842 | 0.610 ppm |
| 2018-05-07 | 2911-007-0900 | 0.620 ppm |
| 2018-05-07 | 2911-015-0930 | 0.490 ppm |
| 2018-05-07 | 2911-025-1310 | 0.490 ppm |
| 2018-05-07 | 2911-027-1045 | 0.530 ppm |
| 2018-05-07 | 2911-028-1345 | 0.470 ppm |
| 2018-05-07 | 2911-031-1030 | 0.480 ppm |
| 2018-06-04 | 2911-002-1300 | 0.470 ppm |
| 2018-06-04 | 2911-006-0818 | 0.580 ppm |
| 2018-06-04 | 2911-007-0818 | 0.600 ppm |
| 2018-06-04 | 2911-013-1055 | 0.560 ppm |
| 2018-06-04 | 2911-015-0850 | 0.460 ppm |
| 2018-06-04 | 2911-025-0944 | 0.500 ppm |
| 2018-06-04 | 2911-026-0945 | 0.520 ppm |
| 2018-06-04 | 2911-027-1004 | 0.500 ppm |
| 2018-06-04 | 2911-028-1059 | 0.450 ppm |
| 2018-06-04 | 2911-031-1015 | 0.470 ppm |
| 2018-06-04 | 2911-045-1056 | 0.420 ppm |
| 2018-07-02 | 2911-002-1318 | 0.480 ppm |
| 2018-07-02 | 2911-006-0935 | 0.550 ppm |
| 2018-07-02 | 2911-007-0950 | 0.570 ppm |
| 2018-07-02 | 2911-013-1019 | 0.540 ppm |
| 2018-07-02 | 2911-015-0810 | 0.470 ppm |
| 2018-07-02 | 2911-025-1035 | 0.450 ppm |
| 2018-07-02 | 2911-026-1040 | 0.460 ppm |
| 2018-07-02 | 2911-027-1015 | 0.500 ppm |
| 2018-07-02 | 2911-028-1120 | 7.15 ppm |
| 2018-07-02 | 2911-031-1005 | 0.440 ppm |
| 2018-07-02 | 2911-045-1135 | 0.410 ppm |
| 2018-08-06 | 2911-002-1349 | 0.480 ppm |
| 2018-08-06 | 2911-006-0950 | 0.600 ppm |
| 2018-08-06 | 2911-007-1005 | 0.650 ppm |
| 2018-08-06 | 2911-013-1012 | 0.540 ppm |
| 2018-08-06 | 2911-015-0855 | 0.470 ppm |
| 2018-08-06 | 2911-025-1100 | 0.510 ppm |
| 2018-08-06 | 2911-026-1105 | 0.510 ppm |
| 2018-08-06 | 2911-027-1050 | 0.530 ppm |
| 2018-08-06 | 2911-031-1040 | 0.460 ppm |
| 2018-08-06 | 2911-045-1300 | 0.450 ppm |
| 2018-09-04 | 2911-002-1450 | 0.490 ppm |
| 2018-09-04 | 2911-006-1147 | 0.560 ppm |
| 2018-09-04 | 2911-007-1153 | 0.590 ppm |
| 2018-09-04 | 2911-013-1118 | 0.520 ppm |
| 2018-09-04 | 2911-015-1242 | 0.470 ppm |
| 2018-09-04 | 2911-025-1322 | 0.490 ppm |
| 2018-09-04 | 2911-026-1217 | 0.320 ppm |
| 2018-09-04 | 2911-026-1320 | 0.500 ppm |
| 2018-09-04 | 2911-027-1120 | 0.500 ppm |
| 2018-09-04 | 2911-028-1240 | 0.490 ppm |
| 2018-09-04 | 2911-031-1130 | 0.460 ppm |
| 2018-09-04 | 2911-045-1420 | 0.430 ppm |
| 2018-10-01 | 2911-002-1605 | 0.460 ppm |
| 2018-10-01 | 2911-006-1335 | 0.570 ppm |
| 2018-10-01 | 2911-007-1335 | 0.580 ppm |
| 2018-10-01 | 2911-013-0000 | 0.540 ppm |
| 2018-10-01 | 2911-015-0755 | 0.460 ppm |
| 2018-10-01 | 2911-025-0935 | 0.460 ppm |
| 2018-10-01 | 2911-026-0940 | 0.540 ppm |
| 2018-10-01 | 2911-027-0925 | 0.490 ppm |
| 2018-10-01 | 2911-028-1210 | 0.430 ppm |
| 2018-10-01 | 2911-031-0910 | 0.440 ppm |
| 2018-10-01 | 2911-045-1210 | 0.410 ppm |
| 2018-11-05 | 2911-002-1434 | 0.470 ppm |
| 2018-11-05 | 2911-006-0955 | 0.550 ppm |
| 2018-11-05 | 2911-007-1005 | 0.600 ppm |
| 2018-11-05 | 2911-013-1040 | 0.550 ppm |
| 2018-11-05 | 2911-015-0920 | 0.470 ppm |
| 2018-11-05 | 2911-025-1155 | 0.470 ppm |
| 2018-11-05 | 2911-026-1200 | 0.480 ppm |
| 2018-11-05 | 2911-027-1025 | 0.500 ppm |
| 2018-11-05 | 2911-028-1125 | 0.440 ppm |
| 2018-11-05 | 2911-031-1225 | 0.470 ppm |
| 2018-11-05 | 2911-045-1120 | 0.450 ppm |
| 2018-12-03 | 2911-006-1058 | 0.490 ppm |
| 2018-12-03 | 2911-007-1113 | 0.590 ppm |
| 2018-12-03 | 2911-015-0937 | 0.440 ppm |
| 2018-12-03 | 2911-025-1550 | 0.460 ppm |
| 2018-12-03 | 2911-026-1550 | 0.480 ppm |
| 2018-12-03 | 2911-027-1150 | 0.490 ppm |
| 2018-12-03 | 2911-028-1345 | 0.430 ppm |
| 2018-12-03 | 2911-031-1130 | 0.440 ppm |
| 2018-12-03 | 2911-045-1340 | 0.420 ppm |
| 2019-01-07 | 2911-006-1215 | 0.450 ppm |
| 2019-01-07 | 2911-007-1200 | 0.490 ppm |
| 2019-01-07 | 2911-013-1031 | 0.440 ppm |
| 2019-01-07 | 2911-025-1110 | 0.350 ppm |
| 2019-01-07 | 2911-026-1115 | 0.310 ppm |
| 2019-01-07 | 2911-028-1000 | 0.270 ppm |
| 2019-01-07 | 2911-031-1135 | 0.320 ppm |
| 2019-01-07 | 2911-045-0955 | 0.240 ppm |
| 2019-02-04 | 2911-006-1332 | 0.450 ppm |
| 2019-02-04 | 2911-007-1010 | 0.520 ppm |
| 2019-02-04 | 2911-013-1021 | 0.490 ppm |
| 2019-02-04 | 2911-015-1115 | 0.360 ppm |
| 2019-02-04 | 2911-025-1135 | 0.470 ppm |
| 2019-02-04 | 2911-026-1140 | 0.490 ppm |
| 2019-02-04 | 2911-027-1150 | 0.350 ppm |
| 2019-02-04 | 2911-028-1125 | 0.440 ppm |
| 2019-02-04 | 2911-031-1140 | 0.410 ppm |
| 2019-02-04 | 2911-045-1120 | 0.410 ppm |
| 2019-03-04 | 2911-002-1427 | 0.450 ppm |
| 2019-03-04 | 2911-006-1305 | 0.530 ppm |
| 2019-03-04 | 2911-007-1315 | 0.590 ppm |
| 2019-03-04 | 2911-013-1016 | 0.550 ppm |
| 2019-03-04 | 2911-015-1220 | 0.460 ppm |
| 2019-03-04 | 2911-025-1030 | 0.470 ppm |
| 2019-03-04 | 2911-026-1035 | 0.470 ppm |
| 2019-03-04 | 2911-027-1120 | 0.390 ppm |
| 2019-03-04 | 2911-028-1215 | 0.290 ppm |
| 2019-03-04 | 2911-031-1110 | 0.410 ppm |
| 2019-03-04 | 2911-045-1210 | 0.460 ppm |
| 2019-04-01 | 2911-002-1337 | 0.450 ppm |
| 2019-04-01 | 2911-006-1450 | 0.600 ppm |
| 2019-04-01 | 2911-007-1500 | 0.600 ppm |
| 2019-04-01 | 2911-013-1005 | 0.570 ppm |
| 2019-04-01 | 2911-025-1005 | 0.470 ppm |
| 2019-04-01 | 2911-026-1025 | 0.490 ppm |
| 2019-04-01 | 2911-027-1045 | 0.520 ppm |
| 2019-04-01 | 2911-031-1035 | 0.430 ppm |
| 2019-04-03 | 2911-015-1313 | 0.470 ppm |
| 2019-04-03 | 2911-028-1345 | 0.460 ppm |
| 2019-04-03 | 2911-045-1345 | 0.470 ppm |
| 2019-05-06 | 2911-002-1412 | 0.430 ppm |
| 2019-05-06 | 2911-006-1412 | 0.550 ppm |
| 2019-05-06 | 2911-007-0920 | 0.580 ppm |
| 2019-05-06 | 2911-013-1037 | 0.540 ppm |
| 2019-05-06 | 2911-015-1045 | 0.460 ppm |
| 2019-05-06 | 2911-021-1410 | 0.400 ppm |
| 2019-05-06 | 2911-025-1000 | 0.480 ppm |
| 2019-05-06 | 2911-026-1005 | 0.470 ppm |
| 2019-05-06 | 2911-027-0955 | 0.490 ppm |
| 2019-05-06 | 2911-028-1110 | 0.420 ppm |
| 2019-05-06 | 2911-031-0940 | 0.450 ppm |
| 2019-05-06 | 2911-045-1115 | 0.460 ppm |
| 2019-06-03 | 2911-002-1240 | 0.480 ppm |
| 2019-06-03 | 2911-006-0815 | 0.610 ppm |
| 2019-06-03 | 2911-007-0840 | 0.610 ppm |
| 2019-06-03 | 2911-013-0950 | 0.560 ppm |
| 2019-06-03 | 2911-015-0955 | 0.500 ppm |
| 2019-06-03 | 2911-021-1236 | 0.440 ppm |
| 2019-06-03 | 2911-025-1140 | 0.500 ppm |
| 2019-06-03 | 2911-026-1145 | 0.520 ppm |
| 2019-06-03 | 2911-027-1130 | 0.540 ppm |
| 2019-06-03 | 2911-028-0945 | 0.470 ppm |
| 2019-06-03 | 2911-031-1115 | 0.490 ppm |
| 2019-06-03 | 2911-045-0940 | 0.460 ppm |
| 2019-07-01 | 2911-007-0852 | 0.540 ppm |
| 2019-07-01 | 2911-013-0946 | 0.470 ppm |
| 2019-07-01 | 2911-015-1058 | 0.430 ppm |
| 2019-07-01 | 2911-025-0952 | 0.410 ppm |
| 2019-07-01 | 2911-026-1000 | 0.430 ppm |
| 2019-07-01 | 2911-027-0915 | 0.450 ppm |
| 2019-07-01 | 2911-028-1113 | 0.410 ppm |
| 2019-07-01 | 2911-031-0929 | 0.430 ppm |
| 2019-07-01 | 2911-045-1108 | 0.430 ppm |