Monochloroacetic acid
New York City System
Monochloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
483
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2012 | 0.0253 ppb | 83 | 1 | ND - 2.10 ppb |
| 2013 | 0.348 ppb | 80 | 11 | ND - 3.10 ppb |
| 2014 | 0.0363 ppb | 80 | 1 | ND - 2.90 ppb |
| 2015 | 0.0250 ppb | 80 | 1 | ND - 2.00 ppb |
| 2016 | 0.0275 ppb | 80 | 1 | ND - 2.20 ppb |
| 2017 | ND | 80 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 53 ppb
The EWG Health Guideline of 53 ppb for monochloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.. This health guideline protects against system toxicity.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2012-02-07 | 3012 | ND |
| 2012-02-07 | 3011 | ND |
| 2012-02-07 | 2999 | ND |
| 2012-02-07 | 3004 | ND |
| 2012-02-07 | 3001 | ND |
| 2012-02-07 | 3018 | ND |
| 2012-02-07 | 2995 | ND |
| 2012-02-07 | 3015 | ND |
| 2012-02-07 | 3013 | ND |
| 2012-02-07 | 3002 | ND |
| 2012-02-07 | 3017 | ND |
| 2012-02-07 | 3016 | ND |
| 2012-02-07 | 2996 | ND |
| 2012-02-07 | 2994 | ND |
| 2012-02-07 | 3003 | ND |
| 2012-02-07 | 3007 | ND |
| 2012-02-07 | 3005 | ND |
| 2012-02-07 | 3000 | ND |
| 2012-02-07 | 3008 | ND |
| 2012-02-07 | 3014 | ND |
| 2012-02-07 | 3009 | ND |
| 2012-02-07 | 2997 | ND |
| 2012-02-07 | 3010 | ND |
| 2012-05-01 | 9869 | ND |
| 2012-05-01 | 9867 | ND |
| 2012-05-01 | 9852 | ND |
| 2012-05-01 | 9864 | ND |
| 2012-05-01 | 9866 | ND |
| 2012-05-01 | 9850 | ND |
| 2012-05-01 | 9868 | ND |
| 2012-05-01 | 9860 | ND |
| 2012-05-01 | 9857 | ND |
| 2012-05-01 | 9853 | ND |
| 2012-05-01 | 9859 | ND |
| 2012-05-01 | 9865 | ND |
| 2012-05-01 | 9862 | ND |
| 2012-05-01 | 9855 | ND |
| 2012-05-01 | 9858 | ND |
| 2012-05-01 | 9861 | 2.10 ppb |
| 2012-05-01 | 9851 | ND |
| 2012-05-01 | 9863 | ND |
| 2012-05-01 | 9856 | ND |
| 2012-05-01 | 9854 | ND |
| 2012-08-07 | 18383 | ND |
| 2012-08-07 | 18381 | ND |
| 2012-08-07 | 18396 | ND |
| 2012-08-07 | 18392 | ND |
| 2012-08-07 | 18380 | ND |
| 2012-08-07 | 18390 | ND |
| 2012-08-07 | 18394 | ND |
| 2012-08-07 | 18393 | ND |
| 2012-08-07 | 18389 | ND |
| 2012-08-07 | 18386 | ND |
| 2012-08-07 | 18395 | ND |
| 2012-08-07 | 18379 | ND |
| 2012-08-07 | 18382 | ND |
| 2012-08-07 | 18384 | ND |
| 2012-08-07 | 18388 | ND |
| 2012-08-07 | 18391 | ND |
| 2012-08-07 | 18385 | ND |
| 2012-08-07 | 18387 | ND |
| 2012-08-07 | 18398 | ND |
| 2012-08-07 | 18397 | ND |
| 2012-11-07 | 26414 | ND |
| 2012-11-07 | 26411 | ND |
| 2012-11-07 | 26420 | ND |
| 2012-11-07 | 26410 | ND |
| 2012-11-07 | 26415 | ND |
| 2012-11-07 | 26426 | ND |
| 2012-11-07 | 26421 | ND |
| 2012-11-07 | 26418 | ND |
| 2012-11-07 | 26419 | ND |
| 2012-11-07 | 26417 | ND |
| 2012-11-07 | 26423 | ND |
| 2012-11-07 | 26412 | ND |
| 2012-11-07 | 26422 | ND |
| 2012-11-07 | 26408 | ND |
| 2012-11-07 | 26407 | ND |
| 2012-11-07 | 26416 | ND |
| 2012-11-07 | 26424 | ND |
| 2012-11-07 | 26425 | ND |
| 2012-11-07 | 26413 | ND |
| 2012-11-07 | 26409 | ND |
| 2013-02-05 | 2966 | ND |
| 2013-02-05 | 2971 | ND |
| 2013-02-05 | 2955 | ND |
| 2013-02-05 | 2968 | ND |
| 2013-02-05 | 2969 | ND |
| 2013-02-05 | 2957 | ND |
| 2013-02-05 | 2961 | ND |
| 2013-02-05 | 2973 | ND |
| 2013-02-05 | 2965 | ND |
| 2013-02-05 | 2954 | ND |
| 2013-02-05 | 2959 | ND |
| 2013-02-05 | 2960 | ND |
| 2013-02-05 | 2956 | ND |
| 2013-02-05 | 2970 | ND |
| 2013-02-05 | 2972 | ND |
| 2013-02-05 | 2962 | ND |
| 2013-02-05 | 2967 | ND |
| 2013-02-05 | 2963 | ND |
| 2013-02-05 | 2958 | ND |
| 2013-02-05 | 2964 | ND |
| 2013-05-07 | 10528 | ND |
| 2013-05-07 | 10593 | 2.50 ppb |
| 2013-05-07 | 10538 | 3.00 ppb |
| 2013-05-07 | 10539 | ND |
| 2013-05-07 | 10527 | ND |
| 2013-05-07 | 10531 | ND |
| 2013-05-07 | 10529 | 2.40 ppb |
| 2013-05-07 | 10594 | 2.10 ppb |
| 2013-05-07 | 10543 | ND |
| 2013-05-07 | 10534 | 2.20 ppb |
| 2013-05-07 | 10530 | 2.30 ppb |
| 2013-05-07 | 10532 | 2.50 ppb |
| 2013-05-07 | 10540 | ND |
| 2013-05-07 | 10546 | 2.30 ppb |
| 2013-05-07 | 10541 | 2.60 ppb |
| 2013-05-07 | 10545 | ND |
| 2013-05-07 | 10533 | ND |
| 2013-05-07 | 10535 | 2.80 ppb |
| 2013-05-07 | 10536 | 3.10 ppb |
| 2013-05-07 | 10542 | ND |
| 2013-08-06 | 18935 | ND |
| 2013-08-06 | 18930 | ND |
| 2013-08-06 | 18945 | ND |
| 2013-08-06 | 18932 | ND |
| 2013-08-06 | 18939 | ND |
| 2013-08-06 | 18933 | ND |
| 2013-08-06 | 18934 | ND |
| 2013-08-06 | 18949 | ND |
| 2013-08-06 | 18936 | ND |
| 2013-08-06 | 18948 | ND |
| 2013-08-06 | 18942 | ND |
| 2013-08-06 | 18943 | ND |
| 2013-08-06 | 18946 | ND |
| 2013-08-06 | 19004 | ND |
| 2013-08-06 | 18940 | ND |
| 2013-08-06 | 18931 | ND |
| 2013-08-06 | 18941 | ND |
| 2013-08-06 | 18938 | ND |
| 2013-08-06 | 18937 | ND |
| 2013-08-06 | 18944 | ND |
| 2013-11-06 | 27108 | ND |
| 2013-11-06 | 27161 | ND |
| 2013-11-06 | 27102 | ND |
| 2013-11-06 | 27097 | ND |
| 2013-11-06 | 27105 | ND |
| 2013-11-06 | 27110 | ND |
| 2013-11-06 | 27109 | ND |
| 2013-11-06 | 27100 | ND |
| 2013-11-06 | 27111 | ND |
| 2013-11-06 | 27104 | ND |
| 2013-11-06 | 27107 | ND |
| 2013-11-06 | 27114 | ND |
| 2013-11-06 | 27103 | ND |
| 2013-11-06 | 27106 | ND |
| 2013-11-06 | 27096 | ND |
| 2013-11-06 | 27095 | ND |
| 2013-11-06 | 27099 | ND |
| 2013-11-06 | 27101 | ND |
| 2013-11-06 | 27113 | ND |
| 2013-11-06 | 27098 | ND |
| 2014-02-04 | 2719 | ND |
| 2014-02-04 | 2725 | ND |
| 2014-02-04 | 2721 | ND |
| 2014-02-04 | 2732 | ND |
| 2014-02-04 | 2778 | ND |
| 2014-02-04 | 2727 | ND |
| 2014-02-04 | 2730 | ND |
| 2014-02-04 | 2723 | ND |
| 2014-02-04 | 2716 | ND |
| 2014-02-04 | 2720 | ND |
| 2014-02-04 | 2714 | ND |
| 2014-02-04 | 2726 | ND |
| 2014-02-04 | 2724 | ND |
| 2014-02-04 | 2722 | ND |
| 2014-02-04 | 2717 | ND |
| 2014-02-04 | 2733 | ND |
| 2014-02-04 | 2715 | ND |
| 2014-02-04 | 2729 | ND |
| 2014-02-04 | 2718 | ND |
| 2014-02-04 | 2728 | ND |
| 2014-05-06 | 10229 | ND |
| 2014-05-06 | 10227 | ND |
| 2014-05-06 | 10240 | ND |
| 2014-05-06 | 10222 | ND |
| 2014-05-06 | 10238 | ND |
| 2014-05-06 | 10224 | ND |
| 2014-05-06 | 10234 | ND |
| 2014-05-06 | 10235 | ND |
| 2014-05-06 | 10239 | ND |
| 2014-05-06 | 10237 | ND |
| 2014-05-06 | 10232 | 2.90 ppb |
| 2014-05-06 | 10233 | ND |
| 2014-05-06 | 10231 | ND |
| 2014-05-06 | 10225 | ND |
| 2014-05-06 | 10223 | ND |
| 2014-05-06 | 10226 | ND |
| 2014-05-06 | 10230 | ND |
| 2014-05-06 | 10241 | ND |
| 2014-05-06 | 10228 | ND |
| 2014-05-06 | 10236 | ND |
| 2014-08-05 | 18393 | ND |
| 2014-08-05 | 18387 | ND |
| 2014-08-05 | 18386 | ND |
| 2014-08-05 | 18392 | ND |
| 2014-08-05 | 18399 | ND |
| 2014-08-05 | 18394 | ND |
| 2014-08-05 | 18398 | ND |
| 2014-08-05 | 18400 | ND |
| 2014-08-05 | 18389 | ND |
| 2014-08-05 | 18388 | ND |
| 2014-08-05 | 18390 | ND |
| 2014-08-05 | 18402 | ND |
| 2014-08-05 | 18383 | ND |
| 2014-08-05 | 18397 | ND |
| 2014-08-05 | 18401 | ND |
| 2014-08-05 | 18385 | ND |
| 2014-08-05 | 18391 | ND |
| 2014-08-05 | 18395 | ND |
| 2014-08-05 | 18396 | ND |
| 2014-08-05 | 18384 | ND |
| 2014-11-05 | 26227 | ND |
| 2014-11-05 | 26225 | ND |
| 2014-11-05 | 26233 | ND |
| 2014-11-05 | 26234 | ND |
| 2014-11-05 | 26229 | ND |
| 2014-11-05 | 26231 | ND |
| 2014-11-05 | 26219 | ND |
| 2014-11-05 | 26236 | ND |
| 2014-11-05 | 26220 | ND |
| 2014-11-05 | 26226 | ND |
| 2014-11-05 | 26224 | ND |
| 2014-11-05 | 26221 | ND |
| 2014-11-05 | 26235 | ND |
| 2014-11-05 | 26218 | ND |
| 2014-11-05 | 26223 | ND |
| 2014-11-05 | 26232 | ND |
| 2014-11-05 | 26237 | ND |
| 2014-11-05 | 26228 | ND |
| 2014-11-05 | 26222 | ND |
| 2014-11-05 | 26230 | ND |
| 2015-02-04 | 2740 | ND |
| 2015-02-04 | 2751 | ND |
| 2015-02-04 | 2745 | ND |
| 2015-02-04 | 2750 | ND |
| 2015-02-04 | 2755 | ND |
| 2015-02-04 | 2742 | ND |
| 2015-02-04 | 2748 | ND |
| 2015-02-04 | 2758 | ND |
| 2015-02-04 | 2753 | ND |
| 2015-02-04 | 2743 | ND |
| 2015-02-04 | 2749 | ND |
| 2015-02-04 | 2757 | ND |
| 2015-02-04 | 2759 | ND |
| 2015-02-04 | 2752 | ND |
| 2015-02-04 | 2741 | ND |
| 2015-02-04 | 2744 | ND |
| 2015-02-04 | 2756 | ND |
| 2015-02-04 | 2822 | ND |
| 2015-02-04 | 2747 | ND |
| 2015-02-04 | 2746 | ND |
| 2015-05-05 | 10234 | ND |
| 2015-05-05 | 10229 | ND |
| 2015-05-05 | 10227 | ND |
| 2015-05-05 | 10219 | ND |
| 2015-05-05 | 10222 | 2.00 ppb |
| 2015-05-05 | 10216 | ND |
| 2015-05-05 | 10224 | ND |
| 2015-05-05 | 10231 | ND |
| 2015-05-05 | 10220 | ND |
| 2015-05-05 | 10221 | ND |
| 2015-05-05 | 10218 | ND |
| 2015-05-05 | 10228 | ND |
| 2015-05-05 | 10223 | ND |
| 2015-05-05 | 10233 | ND |
| 2015-05-05 | 10225 | ND |
| 2015-05-05 | 10213 | ND |
| 2015-05-05 | 10232 | ND |
| 2015-05-05 | 10230 | ND |
| 2015-05-05 | 10214 | ND |
| 2015-05-05 | 10217 | ND |
| 2015-08-04 | 18872 | ND |
| 2015-08-04 | 18880 | ND |
| 2015-08-04 | 18881 | ND |
| 2015-08-04 | 18882 | ND |
| 2015-08-04 | 18866 | ND |
| 2015-08-04 | 18873 | ND |
| 2015-08-04 | 18878 | ND |
| 2015-08-04 | 18876 | ND |
| 2015-08-04 | 18864 | ND |
| 2015-08-04 | 18879 | ND |
| 2015-08-04 | 18862 | ND |
| 2015-08-04 | 18867 | ND |
| 2015-08-04 | 18871 | ND |
| 2015-08-04 | 18868 | ND |
| 2015-08-04 | 18865 | ND |
| 2015-08-04 | 18869 | ND |
| 2015-08-04 | 18877 | ND |
| 2015-08-04 | 18875 | ND |
| 2015-08-04 | 18870 | ND |
| 2015-08-04 | 18863 | ND |
| 2015-11-04 | 27766 | ND |
| 2015-11-04 | 27759 | ND |
| 2015-11-04 | 27707 | ND |
| 2015-11-04 | 27748 | ND |
| 2015-11-04 | 27792 | ND |
| 2015-11-04 | 27793 | ND |
| 2015-11-04 | 27768 | ND |
| 2015-11-04 | 27773 | ND |
| 2015-11-04 | 27758 | ND |
| 2015-11-04 | 27697 | ND |
| 2015-11-04 | 27757 | ND |
| 2015-11-04 | 27750 | ND |
| 2015-11-04 | 27789 | ND |
| 2015-11-04 | 27756 | ND |
| 2015-11-04 | 27775 | ND |
| 2015-11-04 | 27791 | ND |
| 2015-11-04 | 27774 | ND |
| 2015-11-04 | 27751 | ND |
| 2015-11-04 | 27790 | ND |
| 2015-11-04 | 27711 | ND |
| 2016-02-02 | 35947 | ND |
| 2016-02-02 | 35957 | ND |
| 2016-02-02 | 35950 | ND |
| 2016-02-02 | 35959 | ND |
| 2016-02-02 | 35958 | ND |
| 2016-02-02 | 35961 | ND |
| 2016-02-02 | 35945 | ND |
| 2016-02-02 | 35944 | ND |
| 2016-02-02 | 35942 | ND |
| 2016-02-02 | 35952 | ND |
| 2016-02-02 | 35946 | ND |
| 2016-02-02 | 35943 | ND |
| 2016-02-02 | 35951 | ND |
| 2016-02-02 | 35960 | ND |
| 2016-02-02 | 35948 | ND |
| 2016-02-02 | 35955 | ND |
| 2016-02-02 | 35949 | ND |
| 2016-02-02 | 35953 | ND |
| 2016-02-02 | 35962 | ND |
| 2016-02-02 | 35956 | ND |
| 2016-05-03 | 45131 | ND |
| 2016-05-03 | 45134 | ND |
| 2016-05-03 | 45136 | ND |
| 2016-05-03 | 45138 | ND |
| 2016-05-03 | 45128 | ND |
| 2016-05-03 | 45137 | ND |
| 2016-05-03 | 45118 | ND |
| 2016-05-03 | 45123 | ND |
| 2016-05-03 | 45129 | ND |
| 2016-05-03 | 45121 | ND |
| 2016-05-03 | 45135 | ND |
| 2016-05-03 | 45124 | ND |
| 2016-05-03 | 45119 | ND |
| 2016-05-03 | 45126 | ND |
| 2016-05-03 | 45127 | ND |
| 2016-05-03 | 45133 | ND |
| 2016-05-03 | 45122 | ND |
| 2016-05-03 | 45120 | ND |
| 2016-05-03 | 45125 | ND |
| 2016-05-18 | 46615 | ND |
| 2016-08-09 | 55677 | ND |
| 2016-08-09 | 55682 | ND |
| 2016-08-09 | 55674 | ND |
| 2016-08-09 | 55670 | 2.20 ppb |
| 2016-08-09 | 55687 | ND |
| 2016-08-09 | 55669 | ND |
| 2016-08-09 | 55678 | ND |
| 2016-08-09 | 55671 | ND |
| 2016-08-09 | 55673 | ND |
| 2016-08-09 | 55683 | ND |
| 2016-08-09 | 55684 | ND |
| 2016-08-09 | 55688 | ND |
| 2016-08-09 | 55681 | ND |
| 2016-08-09 | 55802 | ND |
| 2016-08-09 | 55668 | ND |
| 2016-08-09 | 55676 | ND |
| 2016-08-09 | 55672 | ND |
| 2016-08-09 | 55675 | ND |
| 2016-08-09 | 55680 | ND |
| 2016-08-09 | 55686 | ND |
| 2016-11-01 | 64462 | ND |
| 2016-11-01 | 64467 | ND |
| 2016-11-01 | 64469 | ND |
| 2016-11-01 | 64458 | ND |
| 2016-11-01 | 64478 | ND |
| 2016-11-01 | 64477 | ND |
| 2016-11-01 | 64472 | ND |
| 2016-11-01 | 64474 | ND |
| 2016-11-01 | 64465 | ND |
| 2016-11-01 | 64473 | ND |
| 2016-11-01 | 64468 | ND |
| 2016-11-01 | 64460 | ND |
| 2016-11-01 | 64463 | ND |
| 2016-11-01 | 64466 | ND |
| 2016-11-01 | 64471 | ND |
| 2016-11-01 | 64461 | ND |
| 2016-11-01 | 64475 | ND |
| 2016-11-01 | 64464 | ND |
| 2016-11-01 | 64459 | ND |
| 2016-11-01 | 64476 | ND |
| 2017-02-07 | 3714 | ND |
| 2017-02-07 | 3716 | ND |
| 2017-02-07 | 3722 | ND |
| 2017-02-07 | 3711 | ND |
| 2017-02-07 | 3727 | ND |
| 2017-02-07 | 3715 | ND |
| 2017-02-07 | 3724 | ND |
| 2017-02-07 | 3718 | ND |
| 2017-02-07 | 3728 | ND |
| 2017-02-07 | 3729 | ND |
| 2017-02-07 | 3710 | ND |
| 2017-02-07 | 3709 | ND |
| 2017-02-07 | 3712 | ND |
| 2017-02-07 | 3717 | ND |
| 2017-02-07 | 3726 | ND |
| 2017-02-07 | 3723 | ND |
| 2017-02-07 | 3725 | ND |
| 2017-02-07 | 3720 | ND |
| 2017-02-07 | 3713 | ND |
| 2017-02-07 | 3719 | ND |
| 2017-05-02 | 11749 | ND |
| 2017-05-02 | 11746 | ND |
| 2017-05-02 | 11745 | ND |
| 2017-05-02 | 11738 | ND |
| 2017-05-02 | 11742 | ND |
| 2017-05-02 | 11752 | ND |
| 2017-05-02 | 11740 | ND |
| 2017-05-02 | 11737 | ND |
| 2017-05-02 | 11747 | ND |
| 2017-05-02 | 11753 | ND |
| 2017-05-02 | 11750 | ND |
| 2017-05-02 | 11744 | ND |
| 2017-05-02 | 11743 | ND |
| 2017-05-02 | 11741 | ND |
| 2017-05-02 | 11736 | ND |
| 2017-05-02 | 11751 | ND |
| 2017-05-02 | 11739 | ND |
| 2017-05-02 | 11754 | ND |
| 2017-05-02 | 11756 | ND |
| 2017-05-02 | 11755 | ND |
| 2017-08-01 | 21276 | ND |
| 2017-08-01 | 21346 | ND |
| 2017-08-01 | 21348 | ND |
| 2017-08-01 | 21319 | ND |
| 2017-08-01 | 21309 | ND |
| 2017-08-01 | 21399 | ND |
| 2017-08-01 | 21326 | ND |
| 2017-08-01 | 21312 | ND |
| 2017-08-01 | 21349 | ND |
| 2017-08-01 | 21311 | ND |
| 2017-08-01 | 21340 | ND |
| 2017-08-01 | 21296 | ND |
| 2017-08-01 | 21298 | ND |
| 2017-08-01 | 21321 | ND |
| 2017-08-01 | 21310 | ND |
| 2017-08-01 | 21347 | ND |
| 2017-08-01 | 21327 | ND |
| 2017-08-01 | 21290 | ND |
| 2017-08-01 | 21286 | ND |
| 2017-08-01 | 21328 | ND |
| 2017-11-08 | 31841 | ND |
| 2017-11-08 | 31844 | ND |
| 2017-11-08 | 31831 | ND |
| 2017-11-08 | 31829 | ND |
| 2017-11-08 | 31834 | ND |
| 2017-11-08 | 31843 | ND |
| 2017-11-08 | 31830 | ND |
| 2017-11-08 | 31842 | ND |
| 2017-11-08 | 31835 | ND |
| 2017-11-08 | 31837 | ND |
| 2017-11-08 | 31836 | ND |
| 2017-11-08 | 31832 | ND |
| 2017-11-08 | 31828 | ND |
| 2017-11-08 | 31839 | ND |
| 2017-11-08 | 31838 | ND |
| 2017-11-08 | 31848 | ND |
| 2017-11-08 | 31847 | ND |
| 2017-11-08 | 31846 | ND |
| 2017-11-08 | 31845 | ND |
| 2017-11-08 | 31833 | ND |