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.
483
Samples
0
Samples exceeding legal limit (MCL)
467
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2012 | 32.8 ppb | 83 | 83 | 16.0 ppb - 50.0 ppb |
| 2013 | 35.2 ppb | 80 | 80 | 13.0 ppb - 74.0 ppb |
| 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 |
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 |
|---|---|---|
| 2012-02-07 | 3012 | 36.0 ppb |
| 2012-02-07 | 3011 | 37.0 ppb |
| 2012-02-07 | 2999 | 16.0 ppb |
| 2012-02-07 | 3004 | 28.0 ppb |
| 2012-02-07 | 3001 | 31.0 ppb |
| 2012-02-07 | 3018 | 21.0 ppb |
| 2012-02-07 | 2995 | 37.0 ppb |
| 2012-02-07 | 3015 | 22.0 ppb |
| 2012-02-07 | 3013 | 36.0 ppb |
| 2012-02-07 | 3002 | 22.0 ppb |
| 2012-02-07 | 3017 | 32.0 ppb |
| 2012-02-07 | 3016 | 24.0 ppb |
| 2012-02-07 | 2996 | 38.0 ppb |
| 2012-02-07 | 2994 | 36.0 ppb |
| 2012-02-07 | 3003 | 25.0 ppb |
| 2012-02-07 | 3007 | 30.0 ppb |
| 2012-02-07 | 3005 | 39.0 ppb |
| 2012-02-07 | 3000 | 21.0 ppb |
| 2012-02-07 | 3008 | 31.0 ppb |
| 2012-02-07 | 3014 | 39.0 ppb |
| 2012-02-07 | 3009 | 35.0 ppb |
| 2012-02-07 | 2997 | 36.0 ppb |
| 2012-02-07 | 3010 | 39.0 ppb |
| 2012-05-01 | 9869 | 23.0 ppb |
| 2012-05-01 | 9867 | 40.0 ppb |
| 2012-05-01 | 9852 | 24.0 ppb |
| 2012-05-01 | 9864 | 32.0 ppb |
| 2012-05-01 | 9866 | 33.0 ppb |
| 2012-05-01 | 9850 | 24.0 ppb |
| 2012-05-01 | 9868 | 40.0 ppb |
| 2012-05-01 | 9860 | 31.0 ppb |
| 2012-05-01 | 9857 | 21.0 ppb |
| 2012-05-01 | 9853 | 28.0 ppb |
| 2012-05-01 | 9859 | 41.0 ppb |
| 2012-05-01 | 9865 | 37.0 ppb |
| 2012-05-01 | 9862 | 36.0 ppb |
| 2012-05-01 | 9855 | 41.0 ppb |
| 2012-05-01 | 9858 | 25.0 ppb |
| 2012-05-01 | 9861 | 43.0 ppb |
| 2012-05-01 | 9851 | 21.0 ppb |
| 2012-05-01 | 9863 | 27.0 ppb |
| 2012-05-01 | 9856 | 34.0 ppb |
| 2012-05-01 | 9854 | 33.0 ppb |
| 2012-08-07 | 18383 | 42.0 ppb |
| 2012-08-07 | 18381 | 32.0 ppb |
| 2012-08-07 | 18396 | 41.0 ppb |
| 2012-08-07 | 18392 | 34.0 ppb |
| 2012-08-07 | 18380 | 29.0 ppb |
| 2012-08-07 | 18390 | 45.0 ppb |
| 2012-08-07 | 18394 | 48.0 ppb |
| 2012-08-07 | 18393 | 39.0 ppb |
| 2012-08-07 | 18389 | 46.0 ppb |
| 2012-08-07 | 18386 | 39.0 ppb |
| 2012-08-07 | 18395 | 39.0 ppb |
| 2012-08-07 | 18379 | 35.0 ppb |
| 2012-08-07 | 18382 | 40.0 ppb |
| 2012-08-07 | 18384 | 50.0 ppb |
| 2012-08-07 | 18388 | 45.0 ppb |
| 2012-08-07 | 18391 | 22.0 ppb |
| 2012-08-07 | 18385 | 47.0 ppb |
| 2012-08-07 | 18387 | 41.0 ppb |
| 2012-08-07 | 18398 | 47.0 ppb |
| 2012-08-07 | 18397 | 49.0 ppb |
| 2012-11-07 | 26414 | 28.0 ppb |
| 2012-11-07 | 26411 | 27.0 ppb |
| 2012-11-07 | 26420 | 28.0 ppb |
| 2012-11-07 | 26410 | 26.0 ppb |
| 2012-11-07 | 26415 | 27.0 ppb |
| 2012-11-07 | 26426 | 24.0 ppb |
| 2012-11-07 | 26421 | 29.0 ppb |
| 2012-11-07 | 26418 | 25.0 ppb |
| 2012-11-07 | 26419 | 34.0 ppb |
| 2012-11-07 | 26417 | 31.0 ppb |
| 2012-11-07 | 26423 | 30.0 ppb |
| 2012-11-07 | 26412 | 26.0 ppb |
| 2012-11-07 | 26422 | 37.0 ppb |
| 2012-11-07 | 26408 | 24.0 ppb |
| 2012-11-07 | 26407 | 24.0 ppb |
| 2012-11-07 | 26416 | 25.0 ppb |
| 2012-11-07 | 26424 | 30.0 ppb |
| 2012-11-07 | 26425 | 39.0 ppb |
| 2012-11-07 | 26413 | 28.0 ppb |
| 2012-11-07 | 26409 | 25.0 ppb |
| 2013-02-05 | 2966 | 24.0 ppb |
| 2013-02-05 | 2971 | 21.0 ppb |
| 2013-02-05 | 2955 | 13.0 ppb |
| 2013-02-05 | 2968 | 20.0 ppb |
| 2013-02-05 | 2969 | 27.0 ppb |
| 2013-02-05 | 2957 | 16.0 ppb |
| 2013-02-05 | 2961 | 20.0 ppb |
| 2013-02-05 | 2973 | 15.0 ppb |
| 2013-02-05 | 2965 | 17.0 ppb |
| 2013-02-05 | 2954 | 17.0 ppb |
| 2013-02-05 | 2959 | 18.0 ppb |
| 2013-02-05 | 2960 | 17.0 ppb |
| 2013-02-05 | 2956 | 16.0 ppb |
| 2013-02-05 | 2970 | 20.0 ppb |
| 2013-02-05 | 2972 | 27.0 ppb |
| 2013-02-05 | 2962 | 19.0 ppb |
| 2013-02-05 | 2967 | 17.0 ppb |
| 2013-02-05 | 2963 | 17.0 ppb |
| 2013-02-05 | 2958 | 21.0 ppb |
| 2013-02-05 | 2964 | 22.0 ppb |
| 2013-05-07 | 10528 | 22.0 ppb |
| 2013-05-07 | 10593 | 30.0 ppb |
| 2013-05-07 | 10538 | 42.0 ppb |
| 2013-05-07 | 10539 | 34.0 ppb |
| 2013-05-07 | 10527 | 25.0 ppb |
| 2013-05-07 | 10531 | 38.0 ppb |
| 2013-05-07 | 10529 | 37.0 ppb |
| 2013-05-07 | 10594 | 29.0 ppb |
| 2013-05-07 | 10543 | 31.0 ppb |
| 2013-05-07 | 10534 | 30.0 ppb |
| 2013-05-07 | 10530 | 31.0 ppb |
| 2013-05-07 | 10532 | 45.0 ppb |
| 2013-05-07 | 10540 | 24.0 ppb |
| 2013-05-07 | 10546 | 27.0 ppb |
| 2013-05-07 | 10541 | 31.0 ppb |
| 2013-05-07 | 10545 | 40.0 ppb |
| 2013-05-07 | 10533 | 42.0 ppb |
| 2013-05-07 | 10535 | 31.0 ppb |
| 2013-05-07 | 10536 | 45.0 ppb |
| 2013-05-07 | 10542 | 38.0 ppb |
| 2013-08-06 | 18935 | 53.0 ppb |
| 2013-08-06 | 18930 | 49.0 ppb |
| 2013-08-06 | 18945 | 60.0 ppb |
| 2013-08-06 | 18932 | 44.0 ppb |
| 2013-08-06 | 18939 | 56.0 ppb |
| 2013-08-06 | 18933 | 48.0 ppb |
| 2013-08-06 | 18934 | 63.0 ppb |
| 2013-08-06 | 18949 | 42.0 ppb |
| 2013-08-06 | 18936 | 57.0 ppb |
| 2013-08-06 | 18948 | 56.0 ppb |
| 2013-08-06 | 18942 | 74.0 ppb |
| 2013-08-06 | 18943 | 44.0 ppb |
| 2013-08-06 | 18946 | 49.0 ppb |
| 2013-08-06 | 19004 | 53.0 ppb |
| 2013-08-06 | 18940 | 67.0 ppb |
| 2013-08-06 | 18931 | 34.0 ppb |
| 2013-08-06 | 18941 | 49.0 ppb |
| 2013-08-06 | 18938 | 59.0 ppb |
| 2013-08-06 | 18937 | 61.0 ppb |
| 2013-08-06 | 18944 | 49.0 ppb |
| 2013-11-06 | 27108 | 28.0 ppb |
| 2013-11-06 | 27161 | 39.0 ppb |
| 2013-11-06 | 27102 | 30.0 ppb |
| 2013-11-06 | 27097 | 38.0 ppb |
| 2013-11-06 | 27105 | 32.0 ppb |
| 2013-11-06 | 27110 | 49.0 ppb |
| 2013-11-06 | 27109 | 37.0 ppb |
| 2013-11-06 | 27100 | 36.0 ppb |
| 2013-11-06 | 27111 | 40.0 ppb |
| 2013-11-06 | 27104 | 41.0 ppb |
| 2013-11-06 | 27107 | 26.0 ppb |
| 2013-11-06 | 27114 | 28.0 ppb |
| 2013-11-06 | 27103 | 33.0 ppb |
| 2013-11-06 | 27106 | 38.0 ppb |
| 2013-11-06 | 27096 | 23.0 ppb |
| 2013-11-06 | 27095 | 29.0 ppb |
| 2013-11-06 | 27099 | 34.0 ppb |
| 2013-11-06 | 27101 | 39.0 ppb |
| 2013-11-06 | 27113 | 43.0 ppb |
| 2013-11-06 | 27098 | 33.0 ppb |
| 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 |