Bromoform
Monroe County Water Authority (MCWA)
Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
275
Samples
0
Samples exceeding legal limit (MCL)
168
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.457 ppb | 36 | 21 | ND - 1.10 ppb |
| 2015 | 0.554 ppb | 48 | 37 | ND - 1.000 ppb |
| 2016 | 0.533 ppb | 48 | 32 | ND - 1.30 ppb |
| 2017 | 0.541 ppb | 48 | 31 | ND - 1.50 ppb |
| 2018 | 0.390 ppb | 47 | 24 | ND - 1.30 ppb |
| 2019 | 0.367 ppb | 48 | 24 | ND - 1.20 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.5 ppb
The EWG Health Guideline of 0.5 ppb for bromoform 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 |
|---|---|---|
| 2014-05-12 | 418190E | ND |
| 2014-05-12 | 481190F | ND |
| 2014-05-12 | 481190G | ND |
| 2014-05-12 | 481120I | ND |
| 2014-05-12 | 481190H | ND |
| 2014-05-12 | 481190C | ND |
| 2014-05-12 | 481190B | 0.580 ppb |
| 2014-05-12 | 481190L | ND |
| 2014-05-12 | 481210J | ND |
| 2014-05-12 | 481210A | 0.510 ppb |
| 2014-05-12 | 481210K | ND |
| 2014-05-12 | 481190Q | 0.570 ppb |
| 2014-08-12 | 493895-6 | ND |
| 2014-08-12 | 493895-12 | 0.800 ppb |
| 2014-08-12 | 493895-4 | 0.830 ppb |
| 2014-08-12 | 493894-9 | 0.710 ppb |
| 2014-08-12 | 493894-10 | 0.950 ppb |
| 2014-08-12 | 493895-11 | 0.800 ppb |
| 2014-08-12 | 493894-8 | 0.760 ppb |
| 2014-08-12 | 493895-5 | ND |
| 2014-08-12 | 493895-2 | 0.740 ppb |
| 2014-08-12 | 493895-3 | 0.560 ppb |
| 2014-08-12 | 493895-1 | 0.850 ppb |
| 2014-08-12 | 493895-7 | ND |
| 2014-11-11 | 507573-4 | 0.800 ppb |
| 2014-11-11 | 507573-11 | 0.720 ppb |
| 2014-11-11 | 507573-7 | ND |
| 2014-11-11 | 507573-1 | 0.760 ppb |
| 2014-11-11 | 507573-3 | 0.880 ppb |
| 2014-11-11 | 507657-2 | 0.840 ppb |
| 2014-11-11 | 507573-12 | 0.990 ppb |
| 2014-11-11 | 507573-2 | 0.790 ppb |
| 2014-11-11 | 507573-6 | ND |
| 2014-11-11 | 507657-3 | 1.10 ppb |
| 2014-11-11 | 507657-1 | 0.920 ppb |
| 2014-11-11 | 507573-5 | ND |
| 2015-02-10 | 520036-3 | 0.600 ppb |
| 2015-02-10 | 520036-9 | 0.600 ppb |
| 2015-02-10 | 520036-6 | ND |
| 2015-02-10 | 520036-10 | 0.650 ppb |
| 2015-02-10 | 520036-12 | 0.580 ppb |
| 2015-02-10 | 520036-1 | 0.650 ppb |
| 2015-02-10 | 520036-8 | 0.650 ppb |
| 2015-02-10 | 520036-2 | 0.580 ppb |
| 2015-02-10 | 520036-4 | 0.710 ppb |
| 2015-02-10 | 520036-5 | 0.600 ppb |
| 2015-02-10 | 520036-11 | 0.500 ppb |
| 2015-02-10 | 520036-7 | ND |
| 2015-05-11 | 534334B | 0.620 ppb |
| 2015-05-11 | 534279A | 0.690 ppb |
| 2015-05-11 | 534334H | 0.580 ppb |
| 2015-05-11 | 534334E | ND |
| 2015-05-11 | 537279C | 0.690 ppb |
| 2015-05-11 | 534334G | ND |
| 2015-05-11 | 534334C | 0.640 ppb |
| 2015-05-11 | 534334D | 0.770 ppb |
| 2015-05-11 | 534334I | 0.630 ppb |
| 2015-05-11 | 537279B | 0.590 ppb |
| 2015-05-11 | 534334F | ND |
| 2015-05-12 | 534334A | 0.680 ppb |
| 2015-08-11 | 547720E | ND |
| 2015-08-11 | 547827B | 0.920 ppb |
| 2015-08-11 | 547720B | 0.820 ppb |
| 2015-08-11 | 547720H | 0.820 ppb |
| 2015-08-11 | 547720I | 0.820 ppb |
| 2015-08-11 | 547720A | 0.770 ppb |
| 2015-08-11 | 547720C | 0.900 ppb |
| 2015-08-11 | 547 | 1.000 ppb |
| 2015-08-11 | 547720F | ND |
| 2015-08-11 | 547827A | 0.960 ppb |
| 2015-08-11 | 547720D | 1.000 ppb |
| 2015-08-11 | 547720G | ND |
| 2015-11-09 | 5620978A | 0.640 ppb |
| 2015-11-09 | 5620976 | ND |
| 2015-11-09 | 56209711 | 0.850 ppb |
| 2015-11-09 | 5620973 | 0.790 ppb |
| 2015-11-09 | 5620974 | 0.850 ppb |
| 2015-11-09 | 5620979 | 0.720 ppb |
| 2015-11-09 | 5620975 | ND |
| 2015-11-09 | 56209710 | 0.840 ppb |
| 2015-11-09 | 5620972 | 0.610 ppb |
| 2015-11-09 | 5620971 | 0.640 ppb |
| 2015-11-09 | 56209712 | 0.630 ppb |
| 2015-11-09 | 5620977 | ND |
| 2016-02-09 | 201601110079 | 0.720 ppb |
| 2016-02-09 | 201601110084 | ND |
| 2016-02-09 | 201601110087 | ND |
| 2016-02-09 | 201601110086 | 0.710 ppb |
| 2016-02-09 | 201601110088 | 0.590 ppb |
| 2016-02-09 | 201601110090 | 0.550 ppb |
| 2016-02-09 | 201601110095 | ND |
| 2016-02-09 | 201601110091 | ND |
| 2016-02-09 | 201601110097 | ND |
| 2016-02-09 | 201601110094 | 0.520 ppb |
| 2016-02-09 | 201601110099 | ND |
| 2016-02-10 | 201601110100 | 0.710 ppb |
| 2016-05-10 | 201605110366 | 0.620 ppb |
| 2016-05-10 | 201605110373 | 0.560 ppb |
| 2016-05-10 | 201605110363 | ND |
| 2016-05-10 | 201605110367 | ND |
| 2016-05-10 | 201605110364 | 0.530 ppb |
| 2016-05-10 | 201605110370 | 0.790 ppb |
| 2016-05-10 | 201605110365 | 0.530 ppb |
| 2016-05-10 | 201605110377 | 0.620 ppb |
| 2016-05-10 | 201605110375` | 0.560 ppb |
| 2016-05-10 | 201605110362DBP | 0.590 ppb |
| 2016-05-10 | 201605110368 | 0.820 ppb |
| 2016-05-10 | 201605110369 | ND |
| 2016-08-09 | 201608100663 | 1.000 ppb |
| 2016-08-09 | 201508100658 | 1.10 ppb |
| 2016-08-09 | 201608100666 | 1.10 ppb |
| 2016-08-09 | 201608100655 | ND |
| 2016-08-09 | 201608100657 | 1.30 ppb |
| 2016-08-09 | 201608100654 | ND |
| 2016-08-09 | 201608100652 | 1.20 ppb |
| 2016-08-09 | 201608100656 | 0.970 ppb |
| 2016-08-09 | 201608100659 | ND |
| 2016-08-09 | 201608100649 | 0.990 ppb |
| 2016-08-09 | 201608100665 | 1.10 ppb |
| 2016-08-09 | 201608100651 | 1.20 ppb |
| 2016-11-09 | 201611090493 | 0.780 ppb |
| 2016-11-09 | 201611090503 | 0.540 ppb |
| 2016-11-09 | 201611090504 | 0.570 ppb |
| 2016-11-09 | 201611090494 | ND |
| 2016-11-09 | 201611090492 | ND |
| 2016-11-09 | 201611090491 | 0.540 ppb |
| 2016-11-09 | 201611090497 | ND |
| 2016-11-09 | 201611090490 | ND |
| 2016-11-09 | 201611090501 | 0.710 ppb |
| 2016-11-09 | 201611090495 | 0.740 ppb |
| 2016-11-09 | 201611090489 | 1.20 ppb |
| 2016-11-09 | 201611090496 | 1.10 ppb |
| 2017-02-15 | 201702151140 | 0.930 ppb |
| 2017-02-15 | 201702151139 | 0.950 ppb |
| 2017-02-15 | 201702151135 | 0.540 ppb |
| 2017-02-15 | 201702151137 | 0.590 ppb |
| 2017-02-15 | 201702151143 | 0.590 ppb |
| 2017-02-15 | 201702151145 | 0.560 ppb |
| 2017-02-15 | 201702151134 | ND |
| 2017-02-15 | 201702151146 | 0.590 ppb |
| 2017-02-15 | 201702151129 | ND |
| 2017-02-15 | 201702151138 | ND |
| 2017-02-15 | 201702151136 | 0.520 ppb |
| 2017-02-15 | 201702151133 | 0.650 ppb |
| 2017-05-08 | 201705100975 | ND |
| 2017-05-09 | 201705100971 | ND |
| 2017-05-09 | 201705100968 | 0.720 ppb |
| 2017-05-09 | 201705100973 | ND |
| 2017-05-09 | 201705100961 | 0.510 ppb |
| 2017-05-09 | 201705100969 | ND |
| 2017-05-09 | 201705100963 | ND |
| 2017-05-09 | 201705100970 | ND |
| 2017-05-09 | 201705100972 | ND |
| 2017-05-09 | 201705100974 | 0.730 ppb |
| 2017-05-09 | 201705100964 | ND |
| 2017-05-09 | 201705100965 | 0.970 ppb |
| 2017-08-28 | 201708290291 | 0.960 ppb |
| 2017-08-28 | 201708290458 | ND |
| 2017-08-28 | 201708290460 | 1.30 ppb |
| 2017-08-28 | 201708290465 | 0.780 ppb |
| 2017-08-28 | 201708290472 | 0.950 ppb |
| 2017-08-28 | 201708290457 | 1.30 ppb |
| 2017-08-28 | 201708290289 | 0.990 ppb |
| 2017-08-28 | 201708290463 | ND |
| 2017-08-28 | 201708290471 | 0.880 ppb |
| 2017-08-28 | 201708290456 | 1.50 ppb |
| 2017-08-28 | 201708290462 | ND |
| 2017-08-28 | 201708290292 | 1.000 ppb |
| 2017-11-14 | 20171160181 | 0.620 ppb |
| 2017-11-14 | 201711150854 | 0.620 ppb |
| 2017-11-14 | 201711150855 | ND |
| 2017-11-14 | 201711160183 | 0.790 ppb |
| 2017-11-14 | 201711160182 | 0.860 ppb |
| 2017-11-14 | 201711150856 | ND |
| 2017-11-14 | 201711150845 | ND |
| 2017-11-14 | 201711150848 | 1.000 ppb |
| 2017-11-15 | 201711150849 | 0.930 ppb |
| 2017-11-15 | 20711150850 | 0.760 ppb |
| 2017-11-15 | 201711150852 | 1.30 ppb |
| 2017-11-15 | 201711150853 | 0.570 ppb |
| 2018-02-14 | 20180215067 | ND |
| 2018-02-15 | 201802151134 | ND |
| 2018-02-15 | 201802151132 | ND |
| 2018-02-15 | 201802151133 | ND |
| 2018-02-15 | 201802151130 | 0.660 ppb |
| 2018-02-15 | 201802151128 | 0.820 ppb |
| 2018-02-15 | 201802151135 | ND |
| 2018-02-15 | 201802151072 | ND |
| 2018-02-15 | 201802151127 | 0.650 ppb |
| 2018-02-15 | 201802151129 | ND |
| 2018-02-15 | 201802151068 | ND |
| 2018-02-15 | 201802151138 | ND |
| 2018-05-11 | 201805140152 | 0.750 ppb |
| 2018-05-11 | 201805140159 | ND |
| 2018-05-11 | 201805140155 | 0.540 ppb |
| 2018-05-11 | 201805140154 | ND |
| 2018-05-11 | 201805140150 | ND |
| 2018-05-11 | 201805140153 | 0.630 ppb |
| 2018-05-11 | 201805140160 | ND |
| 2018-05-11 | 201805140158 | ND |
| 2018-05-11 | 201805140157 | ND |
| 2018-05-11 | 201805140170 | ND |
| 2018-05-11 | 201805140166 | ND |
| 2018-08-06 | 201808090992 | ND |
| 2018-08-06 | 201808090985 | ND |
| 2018-08-06 | 201808090987 | 1.30 ppb |
| 2018-08-06 | 201808090990 | 1.000 ppb |
| 2018-08-06 | 201808090993 | 0.810 ppb |
| 2018-08-06 | 201808090988 | 1.10 ppb |
| 2018-08-06 | 201808090989 | ND |
| 2018-08-07 | 201808091008 | 0.770 ppb |
| 2018-08-07 | 201808090949 | 0.820 ppb |
| 2018-08-07 | 201808090994 | 0.720 ppb |
| 2018-08-07 | 201808090945 | 0.820 ppb |
| 2018-08-07 | 201808090944 | 0.760 ppb |
| 2018-11-13 | 201811140624 | 0.640 ppb |
| 2018-11-13 | 201811140628 | 0.620 ppb |
| 2018-11-13 | 201811140572 | 0.830 ppb |
| 2018-11-13 | 201811140573 | ND |
| 2018-11-13 | 201811140575 | 0.530 ppb |
| 2018-11-13 | 201811140574 | 0.620 ppb |
| 2018-11-13 | 201811140571 | ND |
| 2018-11-13 | 2018111406330 | ND |
| 2018-11-13 | 201811140576 | 0.550 ppb |
| 2018-11-13 | 201811140569 | 0.650 ppb |
| 2018-11-13 | 201811140627 | 0.750 ppb |
| 2018-11-13 | 201811140570 | 1.000 ppb |
| 2019-02-11 | 201902140215 | ND |
| 2019-02-12 | 201902130396 | ND |
| 2019-02-12 | 201902130397 | ND |
| 2019-02-12 | 201902130384 | ND |
| 2019-02-12 | 201902130390 | ND |
| 2019-02-12 | 201902130382DBP | 0.680 ppb |
| 2019-02-12 | 201902130389 | ND |
| 2019-02-12 | 201902130392 | ND |
| 2019-02-12 | 201902130387 | ND |
| 2019-02-12 | 201902130385 | ND |
| 2019-02-12 | 201902130388 | ND |
| 2019-02-12 | 201902130383 | 0.570 ppb |
| 2019-05-14 | 201905160629 | ND |
| 2019-05-14 | 201905160630 | ND |
| 2019-05-14 | 201905160627 | ND |
| 2019-05-14 | 201905160633 | ND |
| 2019-05-14 | 201905160625DBP | 0.800 ppb |
| 2019-05-14 | 201905160628 | 0.730 ppb |
| 2019-05-14 | 201905160634 | ND |
| 2019-05-14 | 201905160631 | ND |
| 2019-05-14 | 201905160636 | ND |
| 2019-05-14 | 201905160626 | ND |
| 2019-05-14 | 201905160635 | 0.580 ppb |
| 2019-05-14 | 201905160632 | 0.530 ppb |
| 2019-08-12 | 201908150683 | ND |
| 2019-08-13 | 201908140508 | 0.800 ppb |
| 2019-08-13 | 201908140514 | 0.600 ppb |
| 2019-08-13 | 201908140505 | 0.680 ppb |
| 2019-08-13 | 201908140509 | 0.750 ppb |
| 2019-08-13 | 201908140504 | ND |
| 2019-08-13 | 201908140503 | ND |
| 2019-08-13 | 201908140499 | 1.20 ppb |
| 2019-08-13 | 201908140502 | 0.900 ppb |
| 2019-08-13 | 201908140506 | 0.750 ppb |
| 2019-08-13 | 201908140501 | ND |
| 2019-08-13 | 201908140500 | 1.10 ppb |
| 2019-08-13 | 201908140510 | 0.720 ppb |
| 2019-11-12 | 201911130174 | 0.630 ppb |
| 2019-11-12 | 201911130168 | ND |
| 2019-11-12 | 201911130171 | ND |
| 2019-11-12 | 201911130181 | 0.740 ppb |
| 2019-11-12 | 201911130173 | 0.530 ppb |
| 2019-11-12 | 201911130169 | 0.750 ppb |
| 2019-11-12 | 201911130177 | 0.600 ppb |
| 2019-11-12 | 201911130166 | 0.720 ppb |
| 2019-11-12 | 201911130176 | 0.640 ppb |
| 2019-11-12 | 201911130167 | 1.000 ppb |
| 2019-11-12 | 201911130172 | 0.600 ppb |