Total trihalomethanes (TTHMs)
U.S. Navy San Clemente Island
Trihalomethanes are cancer-causing contaminants that form during water treatment with chlorine and other disinfectants. The total trihalomethanes group includes four chemicals: chloroform, bromodichloromethane, dibromochloromethane and bromoform. Read More.
Studies conducted in the U.S. and Europe have found that drinking tap water that carries disinfection byproducts increases the risk of developing bladder cancer. In animal studies, all trihalomethanes cause liver, kidney and intestinal tumors. Some human epidemiological studies also reported an association between disinfection byproducts and an increased risk of problems during pregnancy, including spontaneous miscarriage, cardiovascular defects, neural tube defects and low birth weight.
The health guideline of 0.15 parts per billion, or ppb, for the group of four trihalomethanes, or THM4/TTHM, was defined in a peer-reviewed scientific study by EWG and represents a one-in-one-million lifetime cancer risk level.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 31.8 ppb | 250 | 247 | ND - 120.0 ppb |
2015 | 29.6 ppb | 120 | 119 | ND - 120.0 ppb |
2016 | 33.2 ppb | 79 | 79 | 6.60 ppb - 110.0 ppb |
2017 | 59.7 ppb | 65 | 65 | 5.20 ppb - 160.0 ppb |
2018 | 29.3 ppb | 60 | 60 | 2.00 ppb - 80.0 ppb |
2019 | 24.7 ppb | 60 | 60 | 1.70 ppb - 97.0 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.15 ppb
The health guideline of 0.15 parts per billion, or ppb, for the group of four trihalomethanes, or THM4/TTHM, was defined in a peer-reviewed scientific study by EWG and represents a one-in-one-million lifetime cancer risk level.
EPA Maximum Contaminant
Level (MCL) 80 ppb
The legal limit for the group of four trihalomethanes, established in 1998, was based on the need for residual disinfectant levels in water served to customers and the cost of treatment. This limit does not fully protect against the risk of cancer due to exposure to trihalomethanes.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-01-22 | 2168-900-1010 | 34.0 ppb |
2014-01-22 | 2168-901-0645 | 51.0 ppb |
2014-01-22 | 2168-902-0825 | 41.0 ppb |
2014-01-22 | 2168-903-0730 | 43.0 ppb |
2014-01-22 | 2168-904-0925 | 11.0 ppb |
2014-02-12 | 2168-900-0915 | 31.0 ppb |
2014-02-12 | 2168-901-0855 | 14.0 ppb |
2014-02-12 | 2168-902-1010 | 23.0 ppb |
2014-02-12 | 2168-903-0940 | 31.0 ppb |
2014-02-12 | 2168-904-0820 | 5.50 ppb |
2014-03-05 | 2168-902-0942 | 26.0 ppb |
2014-03-05 | 2168-902-1020 | 56.0 ppb |
2014-03-06 | 2168-902-0943 | 20.0 ppb |
2014-03-08 | 2168-902-1555 | 56.0 ppb |
2014-03-08 | 2168-902-1635 | 27.0 ppb |
2014-03-12 | 2168-900-1120 | 26.0 ppb |
2014-03-12 | 2168-901-0955 | 14.0 ppb |
2014-03-12 | 2168-902-1100 | 22.0 ppb |
2014-03-12 | 2168-903-1030 | 39.0 ppb |
2014-03-12 | 2168-904-0930 | 10.00 ppb |
2014-03-18 | 2168-902-1135 | ND |
2014-03-18 | 2168-902-1200 | 66.0 ppb |
2014-03-24 | 2168-902-1035 | 9.50 ppb |
2014-03-24 | 2168-902-1055 | 60.0 ppb |
2014-03-31 | 2168-902-1050 | 3.60 ppb |
2014-03-31 | 2168-902-1128 | 77.0 ppb |
2014-04-06 | 2168-902-1420 | 5.40 ppb |
2014-04-06 | 2168-902-1450 | 91.0 ppb |
2014-04-08 | 2168-900-1505 | 37.0 ppb |
2014-04-08 | 2168-901-1445 | 56.0 ppb |
2014-04-08 | 2168-902-1605 | 44.0 ppb |
2014-04-08 | 2168-903-1530 | 43.0 ppb |
2014-04-09 | 2168-904-1110 | 14.0 ppb |
2014-04-14 | 2168-902-1625 | 4.90 ppb |
2014-04-14 | 2168-902-1650 | 85.0 ppb |
2014-04-18 | 2168-902-0845 | 25.0 ppb |
2014-04-18 | 2168-902-1130 | 57.0 ppb |
2014-04-20 | 2168-902-1005 | 22.0 ppb |
2014-04-21 | 2168-902-0830 | 6.20 ppb |
2014-04-21 | 2168-902-0910 | 120.0 ppb |
2014-04-22 | 2168-902-0820 | 22.0 ppb |
2014-04-24 | 2168-902-1305 | 11.0 ppb |
2014-04-25 | 2168-902-1153 | 12.0 ppb |
2014-04-25 | 2168-902-1530 | 44.0 ppb |
2014-04-27 | 2168-902-0715 | 11.0 ppb |
2014-04-28 | 2168-902-0718 | 4.20 ppb |
2014-04-28 | 2168-902-0815 | 94.0 ppb |
2014-04-28 | 2168-902-0900 | 15.0 ppb |
2014-04-30 | 2168-902-0740 | 15.0 ppb |
2014-04-30 | 2168-902-0817 | 81.0 ppb |
2014-05-01 | 2168-902-1545 | 13.0 ppb |
2014-05-02 | 2168-902-0905 | 13.0 ppb |
2014-05-02 | 2168-902-1120 | 14.0 ppb |
2014-05-03 | 2168-902-0810 | 13.0 ppb |
2014-05-03 | 2168-902-0855 | 94.0 ppb |
2014-05-04 | 2168-902-0730 | 22.0 ppb |
2014-05-06 | 2168-902-0815 | 16.0 ppb |
2014-05-08 | 2168-902-0835 | 6.20 ppb |
2014-05-08 | 2168-902-0919 | 58.0 ppb |
2014-05-08 | 2168-902-0941 | 11.0 ppb |
2014-05-10 | 2168-902-1039 | 7.60 ppb |
2014-05-10 | 2168-902-1349 | 31.0 ppb |
2014-05-13 | 2168-902-1130 | 16.0 ppb |
2014-05-14 | 2168-900-1000 | 32.0 ppb |
2014-05-14 | 2168-901-0655 | 55.0 ppb |
2014-05-14 | 2168-902-1020 | 20.0 ppb |
2014-05-14 | 2168-903-0740 | 64.0 ppb |
2014-05-14 | 2168-904-0845 | 16.0 ppb |
2014-05-15 | 2168-902-1515 | 16.0 ppb |
2014-05-16 | 2168-902-0715 | 62.0 ppb |
2014-05-17 | 2168-902-1330 | 35.0 ppb |
2014-05-20 | 2168-902-0945 | 40.0 ppb |
2014-05-20 | 2168-902-1005 | 40.0 ppb |
2014-05-20 | 2168-902-1025 | 70.0 ppb |
2014-05-23 | 2168-902-0735 | 9.20 ppb |
2014-05-23 | 2168-902-1118 | 52.0 ppb |
2014-05-24 | 2168-902-1525 | 25.0 ppb |
2014-05-27 | 2168-902-0950 | 5.70 ppb |
2014-05-27 | 2168-902-1105 | 8.80 ppb |
2014-05-27 | 2168-902-1256 | 99.0 ppb |
2014-05-30 | 2168-902-0820 | 23.0 ppb |
2014-05-30 | 2168-902-1005 | 30.0 ppb |
2014-05-31 | 2168-902-1435 | 27.0 ppb |
2014-06-03 | 2168-902-0855 | 26.0 ppb |
2014-06-03 | 2168-902-0935 | 27.0 ppb |
2014-06-03 | 2168-902-1040 | 8.50 ppb |
2014-06-06 | 2168-902-0930 | 10.00 ppb |
2014-06-06 | 2168-902-1130 | 71.0 ppb |
2014-06-07 | 2168-902-0755 | 38.0 ppb |
2014-06-10 | 2168-902-1340 | 31.0 ppb |
2014-06-10 | 2168-902-1415 | 7.00 ppb |
2014-06-10 | 2168-902-1425 | 86.0 ppb |
2014-06-11 | 2168-900-0700 | 50.0 ppb |
2014-06-11 | 2168-901-0620 | 64.0 ppb |
2014-06-11 | 2168-902-0945 | 29.0 ppb |
2014-06-11 | 2168-903-0905 | 67.0 ppb |
2014-06-11 | 2168-904-0745 | 14.0 ppb |
2014-06-14 | 2168-902-0855 | 12.0 ppb |
2014-06-14 | 2168-902-0925 | 26.0 ppb |
2014-06-14 | 2168-902-1045 | 61.0 ppb |
2014-06-17 | 2168-902-0955 | 22.0 ppb |
2014-06-17 | 2168-902-1030 | 38.0 ppb |
2014-06-17 | 2168-902-1145 | 22.0 ppb |
2014-06-20 | 2168-902-1025 | 19.0 ppb |
2014-06-20 | 2168-902-1325 | 71.0 ppb |
2014-06-21 | 2168-902-1040 | 40.0 ppb |
2014-06-24 | 2168-902-0857 | 33.0 ppb |
2014-06-24 | 2168-902-0921 | 17.0 ppb |
2014-06-24 | 2168-902-1001 | 67.0 ppb |
2014-06-27 | 2168-902-0845 | 18.0 ppb |
2014-06-27 | 2168-902-1025 | 52.0 ppb |
2014-06-28 | 2168-902-1005 | 34.0 ppb |
2014-07-01 | 2168-902-0840 | 29.0 ppb |
2014-07-01 | 2168-902-0910 | 45.0 ppb |
2014-07-01 | 2168-902-0950 | 40.0 ppb |
2014-07-04 | 2168-902-1100 | 21.0 ppb |
2014-07-04 | 2168-902-1230 | 54.0 ppb |
2014-07-05 | 2168-902-1130 | 36.0 ppb |
2014-07-07 | 2168-902-1535 | 6.20 ppb |
2014-07-07 | 2168-902-1600 | 85.0 ppb |
2014-07-08 | 2168-902-0945 | 43.0 ppb |
2014-07-08 | 2168-902-1625 | 34.0 ppb |
2014-07-15 | 2168-900-1515 | 39.0 ppb |
2014-07-15 | 2168-901-0740 | 76.0 ppb |
2014-07-15 | 2168-902-1005 | 12.0 ppb |
2014-07-15 | 2168-902-1025 | 68.0 ppb |
2014-07-15 | 2168-902-1115 | 43.0 ppb |
2014-07-15 | 2168-902-1435 | 22.0 ppb |
2014-07-15 | 2168-903-1150 | 49.0 ppb |
2014-07-16 | 2168-904-1045 | 19.0 ppb |
2014-07-19 | 2168-902-0715 | 12.0 ppb |
2014-07-19 | 2168-902-0801 | 35.0 ppb |
2014-07-19 | 2168-902-1600 | 74.0 ppb |
2014-07-21 | 2168-902-1352 | 1.60 ppb |
2014-07-21 | 2168-902-1421 | 96.0 ppb |
2014-07-22 | 2168-902-0900 | 36.0 ppb |
2014-07-22 | 2168-902-0955 | 12.0 ppb |
2014-07-25 | 2168-902-1400 | 10.00 ppb |
2014-07-25 | 2168-902-1625 | 18.0 ppb |
2014-07-26 | 2168-902-1500 | 33.0 ppb |
2014-07-28 | 2168-902-1045 | 38.0 ppb |
2014-07-28 | 2168-902-1230 | 36.0 ppb |
2014-07-28 | 2168-902-1600 | 38.0 ppb |
2014-07-28 | 2168-902-1630 | 30.0 ppb |
2014-08-01 | 2168-902-0900 | 11.0 ppb |
2014-08-01 | 2168-902-1330 | 37.0 ppb |
2014-08-02 | 2168-902-1100 | 32.0 ppb |
2014-08-05 | 2168-902-0810 | 15.0 ppb |
2014-08-05 | 2168-902-0840 | 3.60 ppb |
2014-08-05 | 2168-902-1005 | 30.0 ppb |
2014-08-05 | 2168-902-1035 | 79.0 ppb |
2014-08-08 | 2168-902-1020 | 11.0 ppb |
2014-08-08 | 2168-902-1420 | 20.0 ppb |
2014-08-09 | 2168-902-1255 | 27.0 ppb |
2014-08-11 | 2168-902-1525 | 30.0 ppb |
2014-08-11 | 2168-902-1600 | 45.0 ppb |
2014-08-11 | 2168-902-1620 | 16.0 ppb |
2014-08-12 | 2168-900-1510 | 39.0 ppb |
2014-08-12 | 2168-901-1540 | 48.0 ppb |
2014-08-12 | 2168-902-0755 | 12.0 ppb |
2014-08-12 | 2168-902-1450 | 34.0 ppb |
2014-08-12 | 2168-903-1415 | 39.0 ppb |
2014-08-13 | 2168-904-0945 | 19.0 ppb |
2014-08-15 | 2168-901-0833 | 15.0 ppb |
2014-08-15 | 2168-901-1033 | 58.0 ppb |
2014-08-16 | 2168-900-0731 | 25.0 ppb |
2014-08-18 | 2168-902-0708 | 3.70 ppb |
2014-08-18 | 2168-902-1100 | 76.0 ppb |
2014-08-19 | 2168-900-0706 | 26.0 ppb |
2014-08-19 | 2168-903-0740 | 18.0 ppb |
2014-08-22 | 2168-901-1100 | 14.0 ppb |
2014-08-22 | 2168-901-1345 | 38.0 ppb |
2014-08-23 | 2168-900-1000 | 28.0 ppb |
2014-08-26 | 2168-900-1040 | 28.0 ppb |
2014-08-26 | 2168-902-0935 | 7.20 ppb |
2014-08-26 | 2168-902-1010 | ND |
2014-08-26 | 2168-903-1245 | 8.10 ppb |
2014-08-30 | 2168-900-1155 | 31.0 ppb |
2014-08-30 | 2168-901-1122 | 7.00 ppb |
2014-08-30 | 2168-901-1715 | 43.0 ppb |
2014-09-01 | 2168-902-1548 | 3.30 ppb |
2014-09-01 | 2168-902-1651 | 91.0 ppb |
2014-09-02 | 2168-900-0925 | 29.0 ppb |
2014-09-02 | 2168-903-1006 | 4.90 ppb |
2014-09-05 | 2168-901-0700 | 10.00 ppb |
2014-09-05 | 2168-901-0845 | 33.0 ppb |
2014-09-06 | 2168-900-1500 | 28.0 ppb |
2014-09-08 | 2168-900-1000 | 53.0 ppb |
2014-09-08 | 2168-901-1025 | ND |
2014-09-08 | 2168-902-0840 | 72.0 ppb |
2014-09-08 | 2168-903-0920 | 54.0 ppb |
2014-09-09 | 2168-900-0830 | 32.0 ppb |
2014-09-09 | 2168-902-0925 | 26.0 ppb |
2014-09-09 | 2168-902-0950 | 53.0 ppb |
2014-09-09 | 2168-903-0750 | 26.0 ppb |
2014-09-10 | 2168-904-0950 | 12.0 ppb |
2014-09-12 | 2168-901-1200 | 26.0 ppb |
2014-09-12 | 2168-901-1424 | 7.60 ppb |
2014-09-13 | 2168-900-0800 | 30.0 ppb |
2014-09-13 | 2168-902-0702 | 3.80 ppb |
2014-09-13 | 2168-902-1010 | 71.0 ppb |
2014-09-15 | 2168-900-1549 | 30.0 ppb |
2014-09-15 | 2168-903-1534 | 33.0 ppb |
2014-09-19 | 2168-901-1415 | 5.20 ppb |
2014-09-19 | 2168-901-1525 | 36.0 ppb |
2014-09-20 | 2168-900-1130 | 27.0 ppb |
2014-09-22 | 2168-900-1525 | 26.0 ppb |
2014-09-22 | 2168-903-1500 | 26.0 ppb |
2014-09-23 | 2168-902-1025 | 18.0 ppb |
2014-09-23 | 2168-902-1055 | 42.0 ppb |
2014-09-26 | 2168-901-0840 | 9.20 ppb |
2014-09-26 | 2168-901-1330 | 30.0 ppb |
2014-09-27 | 2168-900-1135 | 27.0 ppb |
2014-09-30 | 2168-900-0945 | 15.0 ppb |
2014-09-30 | 2168-900-1200 | 26.0 ppb |
2014-09-30 | 2168-902-0830 | 4.10 ppb |
2014-09-30 | 2168-902-0910 | 64.0 ppb |
2014-10-07 | 2168-900-0755 | 24.0 ppb |
2014-10-07 | 2168-901-0715 | 12.0 ppb |
2014-10-07 | 2168-901-0940 | 36.0 ppb |
2014-10-07 | 2168-902-0825 | 25.0 ppb |
2014-10-07 | 2168-902-0850 | 68.0 ppb |
2014-10-07 | 2168-903-0915 | 39.0 ppb |
2014-10-21 | 2168-900-1320 | 32.0 ppb |
2014-10-21 | 2168-901-1350 | 36.0 ppb |
2014-10-21 | 2168-902-1015 | 24.0 ppb |
2014-10-21 | 2168-903-1245 | 22.0 ppb |
2014-10-22 | 2168-904-1010 | 12.0 ppb |
2014-11-02 | 2168-901-0905 | 9.60 ppb |
2014-11-02 | 2168-901-1045 | 34.0 ppb |
2014-11-03 | 2168-900-1010 | 23.0 ppb |
2014-11-03 | 2168-902-1345 | 4.40 ppb |
2014-11-03 | 2168-902-1410 | 66.0 ppb |
2014-11-03 | 2168-903-0945 | 13.0 ppb |
2014-11-13 | 2168-900-1005 | 29.0 ppb |
2014-11-13 | 2168-901-0905 | 10.00 ppb |
2014-11-13 | 2168-902-1145 | 22.0 ppb |
2014-11-13 | 2168-903-1240 | 12.0 ppb |
2014-11-13 | 2168-904-0935 | 9.00 ppb |
2014-12-04 | 2168-900-0830 | 25.0 ppb |
2014-12-04 | 2168-901-1030 | 11.0 ppb |
2014-12-04 | 2168-902-0900 | 9.10 ppb |
2014-12-04 | 2168-903-0945 | 22.0 ppb |
2014-12-06 | 2168-901-0800 | 10.00 ppb |
2014-12-09 | 2168-902-0845 | 59.0 ppb |
2014-12-16 | 2168-900-0955 | 35.0 ppb |
2014-12-16 | 2168-901-0830 | 84.0 ppb |
2014-12-16 | 2168-902-0940 | 10.00 ppb |
2014-12-16 | 2168-903-0910 | 38.0 ppb |
2014-12-17 | 2168-904-1010 | 8.10 ppb |
2015-01-06 | 2168-900-1125 | 30.0 ppb |
2015-01-06 | 2168-902-0930 | 1.20 ppb |
2015-01-06 | 2168-902-0955 | 77.0 ppb |
2015-01-06 | 2168-903-0900 | 3.00 ppb |
2015-01-09 | 2168-901-0810 | 7.80 ppb |
2015-01-09 | 2168-901-0830 | 14.0 ppb |
2015-01-14 | 2168-902-1005 | 23.0 ppb |
2015-01-14 | 2168-904-0830 | 8.00 ppb |
2015-01-15 | 2168-900-1015 | 30.0 ppb |
2015-01-15 | 2168-901-1035 | 9.50 ppb |
2015-01-15 | 2168-903-0830 | 25.0 ppb |
2015-02-06 | 2168-901-0900 | 19.0 ppb |
2015-02-06 | 2168-901-0925 | 6.70 ppb |
2015-02-10 | 2168-900-0845 | 19.0 ppb |
2015-02-10 | 2168-900-1050 | 18.0 ppb |
2015-02-10 | 2168-901-0910 | 13.0 ppb |
2015-02-10 | 2168-902-0830 | 19.0 ppb |
2015-02-10 | 2168-902-1140 | 19.0 ppb |
2015-02-10 | 2168-903-0810 | 19.0 ppb |
2015-02-10 | 2168-903-0900 | 13.0 ppb |
2015-02-11 | 2168-904-0845 | 6.90 ppb |
2015-03-10 | 2168-900-0955 | 23.0 ppb |
2015-03-10 | 2168-901-1015 | 22.0 ppb |
2015-03-10 | 2168-902-1105 | 24.0 ppb |
2015-03-10 | 2168-903-1045 | 21.0 ppb |
2015-03-10 | 2168-904-0935 | 22.0 ppb |
2015-04-10 | 2168-901-0625 | 1.40 ppb |
2015-04-10 | 2168-901-0830 | 36.0 ppb |
2015-04-11 | 2168-900-0820 | 28.0 ppb |
2015-04-11 | 2168-903-0745 | 14.0 ppb |
2015-04-13 | 2168-900-0745 | 56.0 ppb |
2015-04-13 | 2168-901-0810 | 38.0 ppb |
2015-04-13 | 2168-902-0700 | 43.0 ppb |
2015-04-13 | 2168-902-1410 | 9.40 ppb |
2015-04-13 | 2168-902-1450 | ND |
2015-04-13 | 2168-903-0620 | 37.0 ppb |
2015-04-15 | 2168-904-0930 | 15.0 ppb |
2015-05-05 | 2168-900-0700 | 38.0 ppb |
2015-05-05 | 2168-901-0905 | 22.0 ppb |
2015-05-05 | 2168-901-0915 | 21.0 ppb |
2015-05-05 | 2168-902-0830 | 37.0 ppb |
2015-05-05 | 2168-902-0835 | 38.0 ppb |
2015-05-05 | 2168-903-0815 | 38.0 ppb |
2015-05-19 | 2168-900-1050 | 25.0 ppb |
2015-05-19 | 2168-901-1035 | 27.0 ppb |
2015-05-19 | 2168-902-1010 | 34.0 ppb |
2015-05-19 | 2168-903-0940 | 30.0 ppb |
2015-05-20 | 2168-904-1150 | 27.0 ppb |
2015-06-02 | 2168-900-1500 | 29.0 ppb |
2015-06-02 | 2168-901-1400 | 36.0 ppb |
2015-06-02 | 2168-901-1415 | 36.0 ppb |
2015-06-02 | 2168-902-1525 | 30.0 ppb |
2015-06-02 | 2168-902-1535 | 30.0 ppb |
2015-06-02 | 2168-903-1330 | 25.0 ppb |
2015-07-03 | 2168-900-1325 | 28.0 ppb |
2015-07-03 | 2168-901-0720 | 8.70 ppb |
2015-07-03 | 2168-901-1100 | 44.0 ppb |
2015-07-03 | 2168-903-1435 | 15.0 ppb |
2015-07-04 | 2168-902-1550 | 12.0 ppb |
2015-07-04 | 2168-902-1620 | 85.0 ppb |
2015-07-08 | 2168-900-1318 | 52.0 ppb |
2015-07-08 | 2168-901-1300 | 11.0 ppb |
2015-07-08 | 2168-902-1235 | 52.0 ppb |
2015-07-08 | 2168-903-1211 | 49.0 ppb |
2015-07-08 | 2168-904-1248 | 10.00 ppb |
2015-07-31 | 2168-901-0635 | 12.0 ppb |
2015-07-31 | 2168-901-0920 | 40.0 ppb |
2015-08-01 | 2168-900-1010 | 39.0 ppb |
2015-08-01 | 2168-903-1035 | 20.0 ppb |
2015-08-02 | 2168-902-1425 | 7.30 ppb |
2015-08-02 | 2168-902-1530 | 110.0 ppb |
2015-09-11 | 2168-901-0745 | 13.0 ppb |
2015-09-11 | 2168-901-1035 | 47.0 ppb |
2015-09-11 | 2168-903-1505 | 11.0 ppb |
2015-09-12 | 2168-900-1550 | 42.0 ppb |
2015-09-13 | 2168-902-1020 | 8.60 ppb |
2015-09-13 | 2168-902-1045 | 120.0 ppb |
2015-09-16 | 2168-900-1310 | 51.0 ppb |
2015-09-16 | 2168-901-1337 | 13.0 ppb |
2015-09-16 | 2168-902-1248 | 21.0 ppb |
2015-09-16 | 2168-903-1215 | 51.0 ppb |
2015-09-16 | 2168-904-1346 | 12.0 ppb |
2015-10-06 | 2168-900-0900 | 98.0 ppb |
2015-10-06 | 2168-901-0955 | 100.0 ppb |
2015-10-06 | 2168-901-1005 | 110.0 ppb |
2015-10-06 | 2168-902-1015 | 6.10 ppb |
2015-10-06 | 2168-902-1025 | 5.50 ppb |
2015-10-06 | 2168-903-0920 | 98.0 ppb |
2015-10-14 | 2168-900-1020 | 55.0 ppb |
2015-10-14 | 2168-901-0945 | 12.0 ppb |
2015-10-14 | 2168-902-1040 | 72.0 ppb |
2015-10-14 | 2168-903-1120 | 39.0 ppb |
2015-10-14 | 2168-904-0925 | 13.0 ppb |
2015-10-29 | 2168-900-1635 | 34.0 ppb |
2015-10-29 | 2168-901-1535 | 19.0 ppb |
2015-10-29 | 2168-901-1700 | 14.0 ppb |
2015-10-29 | 2168-902-1200 | 9.10 ppb |
2015-10-29 | 2168-902-1240 | 68.0 ppb |
2015-10-29 | 2168-903-0950 | 16.0 ppb |
2015-11-07 | 2168-900-0731 | 38.0 ppb |
2015-11-07 | 2168-901-0704 | 8.10 ppb |
2015-11-07 | 2168-901-1250 | 36.0 ppb |
2015-11-07 | 2168-902-0800 | 5.40 ppb |
2015-11-07 | 2168-902-0835 | 71.0 ppb |
2015-11-07 | 2168-903-1010 | 26.0 ppb |
2015-11-18 | 2168-900-1120 | 39.0 ppb |
2015-11-18 | 2168-901-1104 | 11.0 ppb |
2015-11-18 | 2168-902-1140 | 22.0 ppb |
2015-11-18 | 2168-903-1207 | 25.0 ppb |
2015-11-18 | 2168-904-1055 | 11.0 ppb |
2015-12-16 | 2168-900-1140 | 15.0 ppb |
2015-12-16 | 2168-901-1112 | 15.0 ppb |
2015-12-16 | 2168-902-1200 | 25.0 ppb |
2015-12-16 | 2168-903-1230 | 39.0 ppb |
2015-12-18 | 2168-900-0740 | 25.0 ppb |
2015-12-18 | 2168-901-0700 | 11.0 ppb |
2015-12-18 | 2168-901-0935 | 21.0 ppb |
2015-12-18 | 2168-903-0810 | 9.70 ppb |
2015-12-21 | 2168-902-1400 | 7.80 ppb |
2015-12-21 | 2168-902-1435 | 46.0 ppb |
2016-01-13 | 2168-900-1100 | 18.0 ppb |
2016-01-13 | 2168-901-1042 | 21.0 ppb |
2016-01-13 | 2168-902-1120 | 16.0 ppb |
2016-01-13 | 2168-903-1155 | 23.0 ppb |
2016-01-14 | 2168-904-0900 | 7.60 ppb |
2016-01-15 | 2168-900-0810 | 21.0 ppb |
2016-01-15 | 2168-901-0730 | 9.50 ppb |
2016-01-15 | 2168-901-1000 | 14.0 ppb |
2016-01-15 | 2168-903-0915 | 9.90 ppb |
2016-01-17 | 2168-902-1110 | 51.0 ppb |
2016-01-17 | 2168-902-1130 | 50.0 ppb |
2016-02-04 | 2168-902-1630 | 20.0 ppb |
2016-02-04 | 2168-903-1300 | 18.0 ppb |
2016-02-05 | 2168-900-0940 | 39.0 ppb |
2016-02-05 | 2168-901-1010 | 12.0 ppb |
2016-02-10 | 2168-904-0900 | 8.90 ppb |
2016-02-12 | 2168-900-0900 | 28.0 ppb |
2016-02-12 | 2168-901-0825 | 13.0 ppb |
2016-02-12 | 2168-901-1010 | 23.0 ppb |
2016-02-12 | 2168-903-0940 | 11.0 ppb |
2016-02-14 | 2168-902-0745 | 7.70 ppb |
2016-02-14 | 2168-902-0810 | 72.0 ppb |
2016-03-05 | 2168-900-1515 | 50.0 ppb |
2016-03-05 | 2168-901-1645 | 40.0 ppb |
2016-03-05 | 2168-902-1430 | 36.0 ppb |
2016-03-05 | 2168-903-0920 | 19.0 ppb |
2016-03-10 | 2168-904-0900 | 19.0 ppb |
2016-03-12 | 2168-900-0845 | 35.0 ppb |
2016-03-12 | 2168-901-0715 | 15.0 ppb |
2016-03-12 | 2168-901-1040 | 38.0 ppb |
2016-03-12 | 2168-903-0930 | 15.0 ppb |
2016-03-14 | 2168-902-1425 | 11.0 ppb |
2016-03-14 | 2168-902-1445 | 78.0 ppb |
2016-04-01 | 2168-900-1250 | 42.0 ppb |
2016-04-01 | 2168-901-1430 | 21.0 ppb |
2016-04-01 | 2168-902-1220 | 28.0 ppb |
2016-04-01 | 2168-903-1115 | 33.0 ppb |
2016-04-07 | 2168-904-1015 | 12.0 ppb |
2016-04-08 | 2168-900-1350 | 37.0 ppb |
2016-04-08 | 2168-901-1300 | 38.0 ppb |
2016-04-08 | 2168-901-1325 | 32.0 ppb |
2016-04-08 | 2168-902-1430 | 13.0 ppb |
2016-04-08 | 2168-902-1605 | 83.0 ppb |
2016-04-08 | 2168-903-1525 | 17.0 ppb |
2016-05-11 | 2168-904-1125 | 6.60 ppb |
2016-05-12 | 2168-900-1535 | 39.0 ppb |
2016-05-12 | 2168-901-1555 | 16.0 ppb |
2016-05-12 | 2168-902-1450 | 29.0 ppb |
2016-05-12 | 2168-903-1240 | 48.0 ppb |
2016-06-03 | 2168-902-1645 | 30.0 ppb |
2016-06-03 | 2168-903-1600 | 50.0 ppb |
2016-06-08 | 2168-900-0805 | 40.0 ppb |
2016-06-08 | 2168-901-0845 | 29.0 ppb |
2016-06-08 | 2168-904-1230 | 14.0 ppb |
2016-07-05 | 2168-900-0840 | 74.0 ppb |
2016-07-05 | 2168-901-1005 | 44.0 ppb |
2016-07-05 | 2168-902-0820 | 93.0 ppb |
2016-07-05 | 2168-903-0920 | 110.0 ppb |
2016-07-06 | 2168-904-0915 | 11.0 ppb |
2016-08-22 | 2168-900-1010 | 44.0 ppb |
2016-08-22 | 2168-901-1030 | 24.0 ppb |
2016-08-22 | 2168-902-0950 | 63.0 ppb |
2016-08-22 | 2168-903-0900 | 26.0 ppb |
2016-08-24 | 2168-904-0910 | 23.0 ppb |
2016-09-01 | 2168-900-1105 | 40.0 ppb |
2016-09-01 | 2168-901-1125 | 31.0 ppb |
2016-09-01 | 2168-902-1045 | 38.0 ppb |
2016-09-01 | 2168-903-0915 | 20.0 ppb |
2016-09-07 | 2168-904-0805 | 17.0 ppb |
2016-10-23 | 2168-900-0920 | 25.0 ppb |
2016-10-23 | 2168-901-1030 | 28.0 ppb |
2016-10-23 | 2168-902-0757 | 41.0 ppb |
2016-10-23 | 2168-903-1000 | 29.0 ppb |
2016-10-26 | 2168-904-0930 | 17.0 ppb |
2016-12-05 | 2168-900-0930 | 58.0 ppb |
2016-12-05 | 2168-901-0840 | 60.0 ppb |
2016-12-05 | 2168-902-0821 | 64.0 ppb |
2016-12-05 | 2168-903-0800 | 58.0 ppb |
2016-12-07 | 2168-904-0730 | 77.0 ppb |
2017-01-16 | 2168-900-0745 | 37.0 ppb |
2017-01-16 | 2168-901-0935 | 5.20 ppb |
2017-01-16 | 2168-902-0710 | 34.0 ppb |
2017-01-16 | 2168-903-1005 | 25.0 ppb |
2017-01-18 | 2168-904-1030 | 13.0 ppb |
2017-02-04 | 2168-900-1310 | 42.0 ppb |
2017-02-04 | 2168-901-1215 | 30.0 ppb |
2017-02-04 | 2168-902-1415 | 35.0 ppb |
2017-02-04 | 2168-903-1500 | 23.0 ppb |
2017-02-08 | 2168-904-0845 | 6.20 ppb |
2017-03-05 | 2168-900-1435 | 40.0 ppb |
2017-03-05 | 2168-901-1550 | 33.0 ppb |
2017-03-05 | 2168-902-1200 | 52.0 ppb |
2017-03-05 | 2168-903-1500 | 28.0 ppb |
2017-03-08 | 2168-904-0805 | 23.0 ppb |
2017-04-02 | 2168-900-1510 | 78.0 ppb |
2017-04-02 | 2168-902-1430 | 90.0 ppb |
2017-04-03 | 2168-903-1610 | 65.0 ppb |
2017-04-04 | 2168-901-1145 | 86.0 ppb |
2017-04-05 | 2168-904-0745 | 27.0 ppb |
2017-05-08 | 2168-900-1315 | 160.0 ppb |
2017-05-08 | 2168-901-1100 | 160.0 ppb |
2017-05-08 | 2168-902-1020 | 160.0 ppb |
2017-05-08 | 2168-903-0930 | 150.0 ppb |
2017-05-10 | 2168-904-0830 | 160.0 ppb |
2017-05-24 | 2168-900-1430 | 62.0 ppb |
2017-05-24 | 2168-901-1405 | 64.0 ppb |
2017-05-24 | 2168-902-1327 | 67.0 ppb |
2017-05-24 | 2168-903-1300 | 31.0 ppb |
2017-05-24 | 2168-904-1220 | 65.0 ppb |
2017-06-05 | 2168-903-1504 | 57.0 ppb |
2017-06-06 | 2168-900-1107 | 77.0 ppb |
2017-06-06 | 2168-901-1308 | 58.0 ppb |
2017-06-06 | 2168-902-1137 | 59.0 ppb |
2017-06-07 | 2168-904-0740 | 36.0 ppb |
2017-07-03 | 2168-900-0801 | 48.0 ppb |
2017-07-03 | 2168-901-1217 | 100.0 ppb |
2017-07-03 | 2168-902-1141 | 72.0 ppb |
2017-07-03 | 2168-903-1100 | 44.0 ppb |
2017-07-06 | 2168-904-0910 | 15.0 ppb |
2017-08-07 | 2168-900-1300 | 94.0 ppb |
2017-08-07 | 2168-901-1115 | 61.0 ppb |
2017-08-07 | 2168-902-1330 | 48.0 ppb |
2017-08-07 | 2168-903-1410 | 56.0 ppb |
2017-08-09 | 2168-904-0900 | 59.0 ppb |
2017-09-04 | 2168-900-1135 | 110.0 ppb |
2017-09-04 | 2168-901-1150 | 99.0 ppb |
2017-09-04 | 2168-902-1116 | 91.0 ppb |
2017-09-04 | 2168-903-1000 | 110.0 ppb |
2017-09-06 | 2168-904-0740 | 99.0 ppb |
2017-10-01 | 2168-900-1005 | 50.0 ppb |
2017-10-01 | 2168-901-1020 | 38.0 ppb |
2017-10-01 | 2168-902-0940 | 57.0 ppb |
2017-10-01 | 2168-903-0850 | 52.0 ppb |
2017-10-03 | 2168-904-0910 | 83.0 ppb |
2017-11-03 | 2168-902-1135 | 53.0 ppb |
2017-11-03 | 2168-903-1045 | 49.0 ppb |
2017-11-04 | 2168-900-1345 | 37.0 ppb |
2017-11-04 | 2168-901-1410 | 25.0 ppb |
2017-11-08 | 2168-904-1030 | 6.90 ppb |
2017-12-01 | 2168-900-1015 | 72.0 ppb |
2017-12-01 | 2168-901-1445 | 16.0 ppb |
2017-12-01 | 2168-902-1300 | 62.0 ppb |
2017-12-01 | 2168-903-1100 | 28.0 ppb |
2017-12-06 | 2168-904-0805 | 8.40 ppb |
2018-01-08 | 2168-900-0955 | 27.0 ppb |
2018-01-08 | 2168-901-1015 | 26.0 ppb |
2018-01-08 | 2168-902-0935 | 47.0 ppb |
2018-01-08 | 2168-903-0720 | 63.0 ppb |
2018-01-11 | 2168-904-0930 | 12.0 ppb |
2018-02-04 | 2168-900-0920 | 55.0 ppb |
2018-02-04 | 2168-901-0910 | 56.0 ppb |
2018-02-04 | 2168-902-0830 | 54.0 ppb |
2018-02-04 | 2168-903-0800 | 61.0 ppb |
2018-02-06 | 2168-904-0810 | 6.90 ppb |
2018-03-06 | 2168-900-0925 | 40.0 ppb |
2018-03-06 | 2168-901-0745 | 49.0 ppb |
2018-03-06 | 2168-902-0900 | 20.0 ppb |
2018-03-06 | 2168-903-0825 | 24.0 ppb |
2018-03-07 | 2168-904-0808 | 11.0 ppb |
2018-04-02 | 2168-900-0930 | 44.0 ppb |
2018-04-02 | 2168-901-0850 | 46.0 ppb |
2018-04-02 | 2168-902-0815 | 49.0 ppb |
2018-04-02 | 2168-903-0740 | 53.0 ppb |
2018-04-04 | 2168-904-0900 | 65.0 ppb |
2018-05-03 | 2168-900-1250 | 23.0 ppb |
2018-05-03 | 2168-901-1520 | 19.0 ppb |
2018-05-03 | 2168-902-1440 | 25.0 ppb |
2018-05-03 | 2168-903-1355 | 71.0 ppb |
2018-05-09 | 2168-904-0810 | 4.80 ppb |
2018-06-03 | 2168-900-1100 | 19.0 ppb |
2018-06-03 | 2168-901-1010 | 41.0 ppb |
2018-06-03 | 2168-902-1120 | 28.0 ppb |
2018-06-03 | 2168-903-0930 | 25.0 ppb |
2018-06-06 | 2168-904-0810 | 2.00 ppb |
2018-07-09 | 2168-900-1630 | 22.0 ppb |
2018-07-09 | 2168-901-1645 | 20.0 ppb |
2018-07-09 | 2168-902-1550 | 4.40 ppb |
2018-07-09 | 2168-903-1515 | 53.0 ppb |
2018-07-11 | 2168-904-0900 | 4.10 ppb |
2018-08-08 | 2168-900-0730 | 23.0 ppb |
2018-08-08 | 2168-901-0850 | 4.50 ppb |
2018-08-08 | 2168-902-0750 | 38.0 ppb |
2018-08-08 | 2168-903-0820 | 35.0 ppb |
2018-08-08 | 2168-904-0900 | 2.30 ppb |
2018-09-04 | 2168-900-0940 | 25.0 ppb |
2018-09-04 | 2168-901-1005 | 36.0 ppb |
2018-09-04 | 2168-902-0910 | 28.0 ppb |
2018-09-04 | 2168-903-0845 | 80.0 ppb |
2018-09-05 | 2168-904-0730 | 3.70 ppb |
2018-10-02 | 2168-900-0845 | 25.0 ppb |
2018-10-02 | 2168-901-0915 | 22.0 ppb |
2018-10-02 | 2168-902-0820 | 46.0 ppb |
2018-10-02 | 2168-903-0725 | 19.0 ppb |
2018-10-03 | 2168-904-0730 | 2.20 ppb |
2018-11-05 | 2168-900-1610 | 32.0 ppb |
2018-11-05 | 2168-901-1550 | 41.0 ppb |
2018-11-05 | 2168-902-1530 | 24.0 ppb |
2018-11-05 | 2168-903-1455 | 25.0 ppb |
2018-11-07 | 2168-904-0710 | 2.70 ppb |
2018-12-01 | 2168-900-0955 | 12.0 ppb |
2018-12-01 | 2168-901-0930 | 18.0 ppb |
2018-12-01 | 2168-902-1025 | 17.0 ppb |
2018-12-01 | 2168-903-1400 | 20.0 ppb |
2018-12-05 | 2168-904-0930 | 4.20 ppb |
2019-01-02 | 2168-900-1515 | 24.0 ppb |
2019-01-02 | 2168-902-1455 | 28.0 ppb |
2019-01-02 | 2168-903-1415 | 7.40 ppb |
2019-01-03 | 2168-901-0655 | 8.10 ppb |
2019-01-03 | 2168-904-0730 | 5.20 ppb |
2019-02-07 | 2168-904-1330 | 2.30 ppb |
2019-02-12 | 2168-900-0855 | 12.0 ppb |
2019-02-12 | 2168-901-0910 | 13.0 ppb |
2019-02-12 | 2168-902-0830 | 11.0 ppb |
2019-02-12 | 2168-903-0715 | 16.0 ppb |
2019-03-05 | 2168-900-0710 | 16.0 ppb |
2019-03-05 | 2168-901-0730 | 15.0 ppb |
2019-03-05 | 2168-902-0650 | 8.40 ppb |
2019-03-05 | 2168-903-0620 | 15.0 ppb |
2019-03-06 | 2168-904-0720 | 1.70 ppb |
2019-04-08 | 2168-900-0830 | 24.0 ppb |
2019-04-08 | 2168-901-0730 | 16.0 ppb |
2019-04-08 | 2168-902-0715 | 6.90 ppb |
2019-04-08 | 2168-903-0755 | 11.0 ppb |
2019-04-11 | 2168-904-0725 | 16.0 ppb |
2019-05-14 | 2168-900-0815 | 49.0 ppb |
2019-05-14 | 2168-901-0845 | 42.0 ppb |
2019-05-14 | 2168-902-0755 | 11.0 ppb |
2019-05-14 | 2168-903-0715 | 47.0 ppb |
2019-05-15 | 2168-904-0720 | 5.70 ppb |
2019-06-03 | 2168-900-1015 | 38.0 ppb |
2019-06-03 | 2168-901-1000 | 49.0 ppb |
2019-06-03 | 2168-902-1030 | 19.0 ppb |
2019-06-03 | 2168-903-1100 | 17.0 ppb |
2019-06-05 | 2168-904-1230 | 7.50 ppb |
2019-07-01 | 2168-900-1410 | 41.0 ppb |
2019-07-01 | 2168-901-1430 | 39.0 ppb |
2019-07-01 | 2168-902-1345 | 13.0 ppb |
2019-07-01 | 2168-903-1315 | 55.0 ppb |
2019-07-02 | 2168-904-0805 | 24.0 ppb |
2019-08-05 | 2168-903-1635 | 30.0 ppb |
2019-08-06 | 2168-900-1425 | 25.0 ppb |
2019-08-06 | 2168-901-1510 | 23.0 ppb |
2019-08-06 | 2168-902-1230 | 8.80 ppb |
2019-08-07 | 2168-904-0715 | 5.10 ppb |
2019-09-10 | 2168-900-1355 | 30.0 ppb |
2019-09-10 | 2168-901-1415 | 55.0 ppb |
2019-09-10 | 2168-902-1300 | 1.90 ppb |
2019-09-10 | 2168-903-1327 | 28.0 ppb |
2019-09-10 | 2168-904-0800 | 4.10 ppb |
2019-10-08 | 2168-900-1055 | 45.0 ppb |
2019-10-08 | 2168-901-1025 | 73.0 ppb |
2019-10-08 | 2168-902-1035 | 44.0 ppb |
2019-10-08 | 2168-903-1010 | 17.0 ppb |
2019-10-09 | 2168-904-0925 | 14.0 ppb |
2019-11-04 | 2168-900-0950 | 19.0 ppb |
2019-11-04 | 2168-901-1100 | 97.0 ppb |
2019-11-04 | 2168-902-1010 | 4.70 ppb |
2019-11-04 | 2168-903-1035 | 30.0 ppb |
2019-11-05 | 2168-904-0745 | 7.70 ppb |
2019-12-06 | 2168-903-1000 | 67.0 ppb |
2019-12-07 | 2168-900-1410 | 28.0 ppb |
2019-12-07 | 2168-902-1140 | 40.0 ppb |
2019-12-10 | 2168-901-1635 | 46.0 ppb |
2019-12-11 | 2168-904-0815 | 22.0 ppb |