Chloroform
New York City System
Chloroform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Chloroform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Read More.
In addition to tap water disinfection, chloroform pollution in the environment also comes from industrial discharges from pulp and paper mills, and from urban wastewater effluent. Human studies show that chloroform damages the kidneys, liver and central nervous system. In animals, chloroform causes infertility, birth defects and cancer.
480
Samples
0
Samples exceeding legal limit (MCL)
464
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 | 32.1 ppb | 80 | 80 | 13.0 ppb - 47.0 ppb |
| 2015 | 30.9 ppb | 80 | 80 | 11.0 ppb - 56.0 ppb |
| 2016 | 37.5 ppb | 80 | 80 | 16.0 ppb - 69.0 ppb |
| 2017 | 22.6 ppb | 80 | 64 | ND - 46.0 ppb |
| 2018 | 33.3 ppb | 80 | 80 | 11.0 ppb - 55.0 ppb |
| 2019 | 36.4 ppb | 80 | 80 | 14.0 ppb - 70.0 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.4 ppb
The EWG Health Guideline of 0.4 ppb for chloroform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-04 | 2719 | 20.0 ppb |
| 2014-02-04 | 2725 | 18.0 ppb |
| 2014-02-04 | 2721 | 18.0 ppb |
| 2014-02-04 | 2732 | 27.0 ppb |
| 2014-02-04 | 2778 | 22.0 ppb |
| 2014-02-04 | 2727 | 18.0 ppb |
| 2014-02-04 | 2730 | 23.0 ppb |
| 2014-02-04 | 2723 | 22.0 ppb |
| 2014-02-04 | 2716 | 19.0 ppb |
| 2014-02-04 | 2720 | 20.0 ppb |
| 2014-02-04 | 2714 | 13.0 ppb |
| 2014-02-04 | 2726 | 20.0 ppb |
| 2014-02-04 | 2724 | 21.0 ppb |
| 2014-02-04 | 2722 | 18.0 ppb |
| 2014-02-04 | 2717 | 18.0 ppb |
| 2014-02-04 | 2733 | 17.0 ppb |
| 2014-02-04 | 2715 | 14.0 ppb |
| 2014-02-04 | 2729 | 29.0 ppb |
| 2014-02-04 | 2718 | 23.0 ppb |
| 2014-02-04 | 2728 | 22.0 ppb |
| 2014-05-06 | 10229 | 37.0 ppb |
| 2014-05-06 | 10227 | 38.0 ppb |
| 2014-05-06 | 10240 | 38.0 ppb |
| 2014-05-06 | 10222 | 37.0 ppb |
| 2014-05-06 | 10238 | 39.0 ppb |
| 2014-05-06 | 10224 | 38.0 ppb |
| 2014-05-06 | 10234 | 35.0 ppb |
| 2014-05-06 | 10235 | 31.0 ppb |
| 2014-05-06 | 10239 | 39.0 ppb |
| 2014-05-06 | 10237 | 41.0 ppb |
| 2014-05-06 | 10232 | 37.0 ppb |
| 2014-05-06 | 10233 | 39.0 ppb |
| 2014-05-06 | 10231 | 33.0 ppb |
| 2014-05-06 | 10225 | 32.0 ppb |
| 2014-05-06 | 10223 | 26.0 ppb |
| 2014-05-06 | 10226 | 45.0 ppb |
| 2014-05-06 | 10230 | 33.0 ppb |
| 2014-05-06 | 10241 | 28.0 ppb |
| 2014-05-06 | 10228 | 39.0 ppb |
| 2014-05-06 | 10236 | 36.0 ppb |
| 2014-08-05 | 18393 | 46.0 ppb |
| 2014-08-05 | 18387 | 42.0 ppb |
| 2014-08-05 | 18386 | 34.0 ppb |
| 2014-08-05 | 18392 | 45.0 ppb |
| 2014-08-05 | 18399 | 38.0 ppb |
| 2014-08-05 | 18394 | 44.0 ppb |
| 2014-08-05 | 18398 | 47.0 ppb |
| 2014-08-05 | 18400 | 40.0 ppb |
| 2014-08-05 | 18389 | 47.0 ppb |
| 2014-08-05 | 18388 | 41.0 ppb |
| 2014-08-05 | 18390 | 44.0 ppb |
| 2014-08-05 | 18402 | 36.0 ppb |
| 2014-08-05 | 18383 | 41.0 ppb |
| 2014-08-05 | 18397 | 38.0 ppb |
| 2014-08-05 | 18401 | 45.0 ppb |
| 2014-08-05 | 18385 | 40.0 ppb |
| 2014-08-05 | 18391 | 45.0 ppb |
| 2014-08-05 | 18395 | 39.0 ppb |
| 2014-08-05 | 18396 | 37.0 ppb |
| 2014-08-05 | 18384 | 29.0 ppb |
| 2014-11-05 | 26227 | 28.0 ppb |
| 2014-11-05 | 26225 | 34.0 ppb |
| 2014-11-05 | 26233 | 35.0 ppb |
| 2014-11-05 | 26234 | 34.0 ppb |
| 2014-11-05 | 26229 | 32.0 ppb |
| 2014-11-05 | 26231 | 26.0 ppb |
| 2014-11-05 | 26219 | 22.0 ppb |
| 2014-11-05 | 26236 | 36.0 ppb |
| 2014-11-05 | 26220 | 33.0 ppb |
| 2014-11-05 | 26226 | 30.0 ppb |
| 2014-11-05 | 26224 | 32.0 ppb |
| 2014-11-05 | 26221 | 27.0 ppb |
| 2014-11-05 | 26235 | 39.0 ppb |
| 2014-11-05 | 26218 | 24.0 ppb |
| 2014-11-05 | 26223 | 35.0 ppb |
| 2014-11-05 | 26232 | 29.0 ppb |
| 2014-11-05 | 26237 | 31.0 ppb |
| 2014-11-05 | 26228 | 30.0 ppb |
| 2014-11-05 | 26222 | 35.0 ppb |
| 2014-11-05 | 26230 | 33.0 ppb |
| 2015-02-04 | 2740 | 12.0 ppb |
| 2015-02-04 | 2751 | 14.0 ppb |
| 2015-02-04 | 2745 | 14.0 ppb |
| 2015-02-04 | 2750 | 13.0 ppb |
| 2015-02-04 | 2755 | 18.0 ppb |
| 2015-02-04 | 2742 | 12.0 ppb |
| 2015-02-04 | 2748 | 14.0 ppb |
| 2015-02-04 | 2758 | 20.0 ppb |
| 2015-02-04 | 2753 | 14.0 ppb |
| 2015-02-04 | 2743 | 14.0 ppb |
| 2015-02-04 | 2749 | 14.0 ppb |
| 2015-02-04 | 2757 | 16.0 ppb |
| 2015-02-04 | 2759 | 12.0 ppb |
| 2015-02-04 | 2752 | 13.0 ppb |
| 2015-02-04 | 2741 | 11.0 ppb |
| 2015-02-04 | 2744 | 17.0 ppb |
| 2015-02-04 | 2756 | 15.0 ppb |
| 2015-02-04 | 2822 | 13.0 ppb |
| 2015-02-04 | 2747 | 15.0 ppb |
| 2015-02-04 | 2746 | 14.0 ppb |
| 2015-05-05 | 10234 | 24.0 ppb |
| 2015-05-05 | 10229 | 24.0 ppb |
| 2015-05-05 | 10227 | 26.0 ppb |
| 2015-05-05 | 10219 | 36.0 ppb |
| 2015-05-05 | 10222 | 38.0 ppb |
| 2015-05-05 | 10216 | 35.0 ppb |
| 2015-05-05 | 10224 | 28.0 ppb |
| 2015-05-05 | 10231 | 28.0 ppb |
| 2015-05-05 | 10220 | 35.0 ppb |
| 2015-05-05 | 10221 | 39.0 ppb |
| 2015-05-05 | 10218 | 37.0 ppb |
| 2015-05-05 | 10228 | 26.0 ppb |
| 2015-05-05 | 10223 | 26.0 ppb |
| 2015-05-05 | 10233 | 31.0 ppb |
| 2015-05-05 | 10225 | 23.0 ppb |
| 2015-05-05 | 10213 | 27.0 ppb |
| 2015-05-05 | 10232 | 29.0 ppb |
| 2015-05-05 | 10230 | 34.0 ppb |
| 2015-05-05 | 10214 | 21.0 ppb |
| 2015-05-05 | 10217 | 32.0 ppb |
| 2015-08-04 | 18872 | 51.0 ppb |
| 2015-08-04 | 18880 | 50.0 ppb |
| 2015-08-04 | 18881 | 44.0 ppb |
| 2015-08-04 | 18882 | 37.0 ppb |
| 2015-08-04 | 18866 | 37.0 ppb |
| 2015-08-04 | 18873 | 44.0 ppb |
| 2015-08-04 | 18878 | 56.0 ppb |
| 2015-08-04 | 18876 | 47.0 ppb |
| 2015-08-04 | 18864 | 49.0 ppb |
| 2015-08-04 | 18879 | 48.0 ppb |
| 2015-08-04 | 18862 | 52.0 ppb |
| 2015-08-04 | 18867 | 55.0 ppb |
| 2015-08-04 | 18871 | 43.0 ppb |
| 2015-08-04 | 18868 | 48.0 ppb |
| 2015-08-04 | 18865 | 55.0 ppb |
| 2015-08-04 | 18869 | 25.0 ppb |
| 2015-08-04 | 18877 | 38.0 ppb |
| 2015-08-04 | 18875 | 27.0 ppb |
| 2015-08-04 | 18870 | 26.0 ppb |
| 2015-08-04 | 18863 | 31.0 ppb |
| 2015-11-04 | 27766 | 30.0 ppb |
| 2015-11-04 | 27759 | 43.0 ppb |
| 2015-11-04 | 27707 | 30.0 ppb |
| 2015-11-04 | 27748 | 34.0 ppb |
| 2015-11-04 | 27792 | 45.0 ppb |
| 2015-11-04 | 27793 | 44.0 ppb |
| 2015-11-04 | 27768 | 33.0 ppb |
| 2015-11-04 | 27773 | 42.0 ppb |
| 2015-11-04 | 27758 | 41.0 ppb |
| 2015-11-04 | 27697 | 34.0 ppb |
| 2015-11-04 | 27757 | 44.0 ppb |
| 2015-11-04 | 27750 | 34.0 ppb |
| 2015-11-04 | 27789 | 27.0 ppb |
| 2015-11-04 | 27756 | 36.0 ppb |
| 2015-11-04 | 27775 | 41.0 ppb |
| 2015-11-04 | 27791 | 25.0 ppb |
| 2015-11-04 | 27774 | 37.0 ppb |
| 2015-11-04 | 27751 | 40.0 ppb |
| 2015-11-04 | 27790 | 25.0 ppb |
| 2015-11-04 | 27711 | 39.0 ppb |
| 2016-02-02 | 35944 | 24.0 ppb |
| 2016-02-02 | 35948 | 32.0 ppb |
| 2016-02-02 | 35942 | 30.0 ppb |
| 2016-02-02 | 35962 | 21.0 ppb |
| 2016-02-02 | 35946 | 29.0 ppb |
| 2016-02-02 | 35949 | 17.0 ppb |
| 2016-02-02 | 35955 | 38.0 ppb |
| 2016-02-02 | 35952 | 35.0 ppb |
| 2016-02-02 | 35956 | 23.0 ppb |
| 2016-02-02 | 35950 | 16.0 ppb |
| 2016-02-02 | 35953 | 32.0 ppb |
| 2016-02-02 | 35961 | 30.0 ppb |
| 2016-02-02 | 35947 | 34.0 ppb |
| 2016-02-02 | 35951 | 36.0 ppb |
| 2016-02-02 | 35958 | 26.0 ppb |
| 2016-02-02 | 35959 | 25.0 ppb |
| 2016-02-02 | 35945 | 34.0 ppb |
| 2016-02-02 | 35943 | 18.0 ppb |
| 2016-02-02 | 35960 | 27.0 ppb |
| 2016-02-02 | 35957 | 23.0 ppb |
| 2016-05-03 | 45124 | 40.0 ppb |
| 2016-05-03 | 45122 | 36.0 ppb |
| 2016-05-03 | 45133 | 33.0 ppb |
| 2016-05-03 | 45123 | 45.0 ppb |
| 2016-05-03 | 45126 | 17.0 ppb |
| 2016-05-03 | 45137 | 39.0 ppb |
| 2016-05-03 | 45127 | 43.0 ppb |
| 2016-05-03 | 45118 | 42.0 ppb |
| 2016-05-03 | 45120 | 37.0 ppb |
| 2016-05-03 | 45131 | 42.0 ppb |
| 2016-05-03 | 45119 | 25.0 ppb |
| 2016-05-03 | 45138 | 33.0 ppb |
| 2016-05-03 | 45121 | 40.0 ppb |
| 2016-05-03 | 45125 | 16.0 ppb |
| 2016-05-03 | 45129 | 40.0 ppb |
| 2016-05-03 | 45134 | 38.0 ppb |
| 2016-05-03 | 45135 | 38.0 ppb |
| 2016-05-03 | 45136 | 34.0 ppb |
| 2016-05-03 | 45128 | 45.0 ppb |
| 2016-05-18 | 46615 | 37.0 ppb |
| 2016-08-09 | 55680 | 62.0 ppb |
| 2016-08-09 | 55670 | 57.0 ppb |
| 2016-08-09 | 55677 | 59.0 ppb |
| 2016-08-09 | 55678 | 56.0 ppb |
| 2016-08-09 | 55671 | 45.0 ppb |
| 2016-08-09 | 55684 | 53.0 ppb |
| 2016-08-09 | 55668 | 33.0 ppb |
| 2016-08-09 | 55686 | 69.0 ppb |
| 2016-08-09 | 55688 | 54.0 ppb |
| 2016-08-09 | 55687 | 44.0 ppb |
| 2016-08-09 | 55683 | 53.0 ppb |
| 2016-08-09 | 55802 | 52.0 ppb |
| 2016-08-09 | 55669 | 54.0 ppb |
| 2016-08-09 | 55681 | 48.0 ppb |
| 2016-08-09 | 55674 | 28.0 ppb |
| 2016-08-09 | 55672 | 49.0 ppb |
| 2016-08-09 | 55675 | 29.0 ppb |
| 2016-08-09 | 55676 | 51.0 ppb |
| 2016-08-09 | 55682 | 45.0 ppb |
| 2016-08-09 | 55673 | 46.0 ppb |
| 2016-11-01 | 64478 | 29.0 ppb |
| 2016-11-01 | 64475 | 39.0 ppb |
| 2016-11-01 | 64463 | 51.0 ppb |
| 2016-11-01 | 64476 | 37.0 ppb |
| 2016-11-01 | 64464 | 37.0 ppb |
| 2016-11-01 | 64466 | 18.0 ppb |
| 2016-11-01 | 64469 | 39.0 ppb |
| 2016-11-01 | 64474 | 47.0 ppb |
| 2016-11-01 | 64468 | 40.0 ppb |
| 2016-11-01 | 64459 | 25.0 ppb |
| 2016-11-01 | 64465 | 17.0 ppb |
| 2016-11-01 | 64471 | 42.0 ppb |
| 2016-11-01 | 64458 | 34.0 ppb |
| 2016-11-01 | 64460 | 39.0 ppb |
| 2016-11-01 | 64472 | 38.0 ppb |
| 2016-11-01 | 64461 | 38.0 ppb |
| 2016-11-01 | 64462 | 38.0 ppb |
| 2016-11-01 | 64477 | 49.0 ppb |
| 2016-11-01 | 64473 | 37.0 ppb |
| 2016-11-01 | 64467 | 47.0 ppb |
| 2017-02-07 | 3713 | 24.0 ppb |
| 2017-02-07 | 3718 | 23.0 ppb |
| 2017-02-07 | 3720 | 22.0 ppb |
| 2017-02-07 | 3719 | 21.0 ppb |
| 2017-02-07 | 3715 | 23.0 ppb |
| 2017-02-07 | 3712 | 20.0 ppb |
| 2017-02-07 | 3717 | 18.0 ppb |
| 2017-02-07 | 3724 | 15.0 ppb |
| 2017-02-07 | 3723 | 18.0 ppb |
| 2017-02-07 | 3727 | 18.0 ppb |
| 2017-02-07 | 3709 | 17.0 ppb |
| 2017-02-07 | 3714 | 20.0 ppb |
| 2017-02-07 | 3716 | 18.0 ppb |
| 2017-02-07 | 3711 | 16.0 ppb |
| 2017-02-07 | 3728 | 21.0 ppb |
| 2017-02-07 | 3729 | 16.0 ppb |
| 2017-02-07 | 3710 | 18.0 ppb |
| 2017-02-07 | 3725 | 23.0 ppb |
| 2017-02-07 | 3722 | 26.0 ppb |
| 2017-02-07 | 3726 | 16.0 ppb |
| 2017-05-02 | 11746 | 26.0 ppb |
| 2017-05-02 | 11756 | 21.0 ppb |
| 2017-05-02 | 11745 | 35.0 ppb |
| 2017-05-02 | 11744 | 28.0 ppb |
| 2017-05-02 | 11750 | 24.0 ppb |
| 2017-05-02 | 11749 | 26.0 ppb |
| 2017-05-02 | 11742 | 31.0 ppb |
| 2017-05-02 | 11738 | 30.0 ppb |
| 2017-05-02 | 11753 | 26.0 ppb |
| 2017-05-02 | 11752 | 24.0 ppb |
| 2017-05-02 | 11751 | 19.0 ppb |
| 2017-05-02 | 11754 | 19.0 ppb |
| 2017-05-02 | 11740 | 32.0 ppb |
| 2017-05-02 | 11739 | 40.0 ppb |
| 2017-05-02 | 11737 | 32.0 ppb |
| 2017-05-02 | 11736 | 30.0 ppb |
| 2017-05-02 | 11755 | 21.0 ppb |
| 2017-05-02 | 11743 | 35.0 ppb |
| 2017-05-02 | 11747 | 19.0 ppb |
| 2017-05-02 | 11741 | 25.0 ppb |
| 2017-08-01 | 21319 | ND |
| 2017-08-01 | 21312 | ND |
| 2017-08-01 | 21298 | ND |
| 2017-08-01 | 21321 | 36.0 ppb |
| 2017-08-01 | 21286 | ND |
| 2017-08-01 | 21327 | 42.0 ppb |
| 2017-08-01 | 21346 | ND |
| 2017-08-01 | 21349 | ND |
| 2017-08-01 | 21290 | ND |
| 2017-08-01 | 21347 | ND |
| 2017-08-01 | 21311 | ND |
| 2017-08-01 | 21348 | ND |
| 2017-08-01 | 21276 | ND |
| 2017-08-01 | 21310 | ND |
| 2017-08-01 | 21326 | ND |
| 2017-08-01 | 21296 | ND |
| 2017-08-01 | 21340 | ND |
| 2017-08-01 | 21309 | ND |
| 2017-08-01 | 21328 | 41.0 ppb |
| 2017-08-01 | 21399 | 38.0 ppb |
| 2017-11-08 | 31848 | 32.0 ppb |
| 2017-11-08 | 31845 | 31.0 ppb |
| 2017-11-08 | 31832 | 41.0 ppb |
| 2017-11-08 | 31829 | 27.0 ppb |
| 2017-11-08 | 31834 | 40.0 ppb |
| 2017-11-08 | 31844 | 45.0 ppb |
| 2017-11-08 | 31846 | 35.0 ppb |
| 2017-11-08 | 31830 | 34.0 ppb |
| 2017-11-08 | 31828 | 28.0 ppb |
| 2017-11-08 | 31837 | 43.0 ppb |
| 2017-11-08 | 31836 | 40.0 ppb |
| 2017-11-08 | 31839 | 27.0 ppb |
| 2017-11-08 | 31847 | 46.0 ppb |
| 2017-11-08 | 31838 | 33.0 ppb |
| 2017-11-08 | 31833 | 39.0 ppb |
| 2017-11-08 | 31841 | 44.0 ppb |
| 2017-11-08 | 31831 | 33.0 ppb |
| 2017-11-08 | 31843 | 29.0 ppb |
| 2017-11-08 | 31842 | 28.0 ppb |
| 2017-11-08 | 31835 | 37.0 ppb |
| 2018-02-06 | 3729 | 11.0 ppb |
| 2018-02-06 | 3738 | 14.0 ppb |
| 2018-02-06 | 3735 | 18.0 ppb |
| 2018-02-06 | 3730 | 15.0 ppb |
| 2018-02-06 | 3744 | 18.0 ppb |
| 2018-02-06 | 3741 | 20.0 ppb |
| 2018-02-06 | 3739 | 14.0 ppb |
| 2018-02-06 | 3737 | 18.0 ppb |
| 2018-02-06 | 3728 | 12.0 ppb |
| 2018-02-06 | 3746 | 16.0 ppb |
| 2018-02-06 | 3742 | 14.0 ppb |
| 2018-02-06 | 3732 | 18.0 ppb |
| 2018-02-06 | 3745 | 18.0 ppb |
| 2018-02-06 | 3733 | 15.0 ppb |
| 2018-02-06 | 3731 | 17.0 ppb |
| 2018-02-06 | 3736 | 16.0 ppb |
| 2018-02-06 | 3734 | 18.0 ppb |
| 2018-02-06 | 3743 | 14.0 ppb |
| 2018-02-06 | 3747 | 19.0 ppb |
| 2018-02-06 | 3748 | 12.0 ppb |
| 2018-05-01 | 12618 | 30.0 ppb |
| 2018-05-01 | 12623 | 29.0 ppb |
| 2018-05-01 | 12620 | 32.0 ppb |
| 2018-05-01 | 12609 | 43.0 ppb |
| 2018-05-01 | 12605 | 37.0 ppb |
| 2018-05-01 | 12604 | 25.0 ppb |
| 2018-05-01 | 12621 | 34.0 ppb |
| 2018-05-01 | 12606 | 38.0 ppb |
| 2018-05-01 | 12610 | 44.0 ppb |
| 2018-05-01 | 12603 | 39.0 ppb |
| 2018-05-01 | 12617 | 28.0 ppb |
| 2018-05-01 | 12607 | 49.0 ppb |
| 2018-05-01 | 12616 | 54.0 ppb |
| 2018-05-01 | 12611 | 49.0 ppb |
| 2018-05-01 | 12613 | 44.0 ppb |
| 2018-05-01 | 12612 | 47.0 ppb |
| 2018-05-01 | 12619 | 46.0 ppb |
| 2018-05-01 | 12614 | 27.0 ppb |
| 2018-05-01 | 12622 | 40.0 ppb |
| 2018-05-01 | 12608 | 46.0 ppb |
| 2018-08-07 | 23711 | 37.0 ppb |
| 2018-08-07 | 23844 | 36.0 ppb |
| 2018-08-07 | 23710 | 54.0 ppb |
| 2018-08-07 | 23838 | 46.0 ppb |
| 2018-08-07 | 23718 | 30.0 ppb |
| 2018-08-07 | 23837 | 38.0 ppb |
| 2018-08-07 | 23726 | 38.0 ppb |
| 2018-08-07 | 23717 | 31.0 ppb |
| 2018-08-07 | 23716 | 40.0 ppb |
| 2018-08-07 | 23720 | 39.0 ppb |
| 2018-08-07 | 23715 | 53.0 ppb |
| 2018-08-07 | 23725 | 42.0 ppb |
| 2018-08-07 | 23829 | 34.0 ppb |
| 2018-08-07 | 23714 | 44.0 ppb |
| 2018-08-07 | 23719 | 40.0 ppb |
| 2018-08-07 | 23712 | 49.0 ppb |
| 2018-08-07 | 23847 | 32.0 ppb |
| 2018-08-07 | 23828 | 35.0 ppb |
| 2018-08-07 | 23713 | 55.0 ppb |
| 2018-08-07 | 23842 | 51.0 ppb |
| 2018-11-07 | 33673 | 46.0 ppb |
| 2018-11-07 | 33728 | 38.0 ppb |
| 2018-11-07 | 33704 | 38.0 ppb |
| 2018-11-07 | 33721 | 36.0 ppb |
| 2018-11-07 | 33687 | 24.0 ppb |
| 2018-11-07 | 33682 | 34.0 ppb |
| 2018-11-07 | 33729 | 48.0 ppb |
| 2018-11-07 | 33680 | 36.0 ppb |
| 2018-11-07 | 33703 | 45.0 ppb |
| 2018-11-07 | 33743 | 36.0 ppb |
| 2018-11-07 | 33722 | 30.0 ppb |
| 2018-11-07 | 33727 | 37.0 ppb |
| 2018-11-07 | 33706 | 42.0 ppb |
| 2018-11-07 | 33700 | 39.0 ppb |
| 2018-11-07 | 33723 | 29.0 ppb |
| 2018-11-07 | 33663 | 30.0 ppb |
| 2018-11-07 | 33697 | 41.0 ppb |
| 2018-11-07 | 33720 | 34.0 ppb |
| 2018-11-07 | 33798 | 40.0 ppb |
| 2018-11-07 | 33699 | 36.0 ppb |
| 2019-02-05 | 3580 | 15.0 ppb |
| 2019-02-05 | 3576 | 31.0 ppb |
| 2019-02-05 | 3641 | 26.0 ppb |
| 2019-02-05 | 3565 | 19.0 ppb |
| 2019-02-05 | 3625 | 27.0 ppb |
| 2019-02-05 | 3603 | 22.0 ppb |
| 2019-02-05 | 3644 | 30.0 ppb |
| 2019-02-05 | 3642 | 28.0 ppb |
| 2019-02-05 | 3627 | 23.0 ppb |
| 2019-02-05 | 3648 | 19.0 ppb |
| 2019-02-05 | 3574 | 26.0 ppb |
| 2019-02-05 | 3581 | 23.0 ppb |
| 2019-02-05 | 3599 | 29.0 ppb |
| 2019-02-05 | 3582 | 27.0 ppb |
| 2019-02-05 | 3579 | 14.0 ppb |
| 2019-02-05 | 3575 | 25.0 ppb |
| 2019-02-05 | 3643 | 23.0 ppb |
| 2019-02-05 | 3586 | 25.0 ppb |
| 2019-02-05 | 3628 | 28.0 ppb |
| 2019-02-05 | 3567 | 24.0 ppb |
| 2019-05-07 | 12940 | 26.0 ppb |
| 2019-05-07 | 12917 | 39.0 ppb |
| 2019-05-07 | 12946 | 28.0 ppb |
| 2019-05-07 | 12904 | 43.0 ppb |
| 2019-05-07 | 12910 | 23.0 ppb |
| 2019-05-07 | 12941 | 26.0 ppb |
| 2019-05-07 | 12943 | 41.0 ppb |
| 2019-05-07 | 12901 | 35.0 ppb |
| 2019-05-07 | 12948 | 25.0 ppb |
| 2019-05-07 | 12930 | 39.0 ppb |
| 2019-05-07 | 12934 | 29.0 ppb |
| 2019-05-07 | 12957 | 29.0 ppb |
| 2019-05-07 | 12908 | 29.0 ppb |
| 2019-05-07 | 12898 | 31.0 ppb |
| 2019-05-07 | 12897 | 31.0 ppb |
| 2019-05-07 | 12942 | 37.0 ppb |
| 2019-05-07 | 12903 | 36.0 ppb |
| 2019-05-07 | 12902 | 27.0 ppb |
| 2019-05-07 | 12911 | 28.0 ppb |
| 2019-05-07 | 12896 | 30.0 ppb |
| 2019-08-06 | 22803 | 53.0 ppb |
| 2019-08-06 | 22865 | 70.0 ppb |
| 2019-08-06 | 22825 | 48.0 ppb |
| 2019-08-06 | 22873 | 53.0 ppb |
| 2019-08-06 | 22872 | 43.0 ppb |
| 2019-08-06 | 22824 | 60.0 ppb |
| 2019-08-06 | 22857 | 55.0 ppb |
| 2019-08-06 | 22834 | 44.0 ppb |
| 2019-08-06 | 22832 | 54.0 ppb |
| 2019-08-06 | 22823 | 70.0 ppb |
| 2019-08-06 | 22850 | 44.0 ppb |
| 2019-08-06 | 22863 | 56.0 ppb |
| 2019-08-06 | 22886 | 66.0 ppb |
| 2019-08-06 | 22817 | 52.0 ppb |
| 2019-08-06 | 22866 | 64.0 ppb |
| 2019-08-06 | 22870 | 58.0 ppb |
| 2019-08-06 | 22864 | 55.0 ppb |
| 2019-08-06 | 22804 | 58.0 ppb |
| 2019-08-06 | 22822 | 68.0 ppb |
| 2019-08-06 | 22805 | 56.0 ppb |
| 2019-11-06 | 32923 | 32.0 ppb |
| 2019-11-06 | 32964 | 28.0 ppb |
| 2019-11-06 | 32911 | 37.0 ppb |
| 2019-11-06 | 32971 | 27.0 ppb |
| 2019-11-06 | 32930 | 35.0 ppb |
| 2019-11-06 | 32927 | 30.0 ppb |
| 2019-11-06 | 32966 | 25.0 ppb |
| 2019-11-06 | 32905 | 36.0 ppb |
| 2019-11-06 | 32913 | 36.0 ppb |
| 2019-11-06 | 32928 | 32.0 ppb |
| 2019-11-06 | 32978 | 35.0 ppb |
| 2019-11-06 | 32981 | 31.0 ppb |
| 2019-11-06 | 32912 | 34.0 ppb |
| 2019-11-06 | 32980 | 24.0 ppb |
| 2019-11-06 | 32914 | 35.0 ppb |
| 2019-11-06 | 32985 | 38.0 ppb |
| 2019-11-06 | 32924 | 36.0 ppb |
| 2019-11-06 | 32922 | 31.0 ppb |
| 2019-11-06 | 32937 | 45.0 ppb |
| 2019-11-06 | 32929 | 43.0 ppb |