Know Your Environment. Protect Your Health.

Bromoform

Metropolitan Utilities District

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.

 

305

Samples

0

Samples exceeding legal limit (MCL)

122

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.253 ppb5017ND - 1.17 ppb
20190.219 ppb5114ND - 1.51 ppb
20200.436 ppb5431ND - 1.12 ppb
20210.280 ppb4819ND - 1.02 ppb
20220.269 ppb4916ND - 1.37 ppb
20230.345 ppb5325ND - 1.29 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform is based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer, harm to reproduction and child development, and change to fetal growth and development .

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-065340970.700 ppb
2018-02-06534092ND
2018-02-065340951.17 ppb
2018-02-06534100ND
2018-02-06534094ND
2018-02-06534090ND
2018-02-065340990.890 ppb
2018-02-065340961.12 ppb
2018-02-065340890.940 ppb
2018-02-065340980.790 ppb
2018-02-06534091ND
2018-02-065340930.680 ppb
2018-05-075498150.530 ppb
2018-05-07549816ND
2018-05-075498170.770 ppb
2018-05-07549814ND
2018-05-075498190.710 ppb
2018-05-07549825ND
2018-05-07549823ND
2018-05-07549821ND
2018-05-07549820ND
2018-05-07549818ND
2018-05-07549824ND
2018-05-075498220.640 ppb
2018-05-14542540ND
2018-05-14542539ND
2018-08-08567027ND
2018-08-08567023ND
2018-08-08567022ND
2018-08-08567029ND
2018-08-08567030ND
2018-08-08567024ND
2018-08-085670210.540 ppb
2018-08-085670260.680 ppb
2018-08-08567020ND
2018-08-08567028ND
2018-08-08567019ND
2018-08-08567025ND
2018-11-06583375ND
2018-11-06583385ND
2018-11-06583379ND
2018-11-065833740.732 ppb
2018-11-06583383ND
2018-11-065833780.620 ppb
2018-11-065833760.580 ppb
2018-11-06583382ND
2018-11-065833800.550 ppb
2018-11-06583384ND
2018-11-06583381ND
2018-11-06583377ND
2019-02-055952390.880 ppb
2019-02-055952450.880 ppb
2019-02-05595238ND
2019-02-055952430.880 ppb
2019-02-05595240ND
2019-02-055952370.746 ppb
2019-02-055952360.693 ppb
2019-02-055952440.900 ppb
2019-02-055952410.900 ppb
2019-02-05595246ND
2019-02-05595242ND
2019-02-05595247ND
2019-04-02604245ND
2019-04-226048101.51 ppb
2019-05-07600564ND
2019-05-076005710.860 ppb
2019-05-07600574ND
2019-05-076005670.690 ppb
2019-05-07600570ND
2019-05-07600566ND
2019-05-07600573ND
2019-05-07600575ND
2019-05-07600565ND
2019-05-07600568ND
2019-05-07600572ND
2019-05-07600569ND
2019-06-10604811ND
2019-08-06622452ND
2019-08-06622449ND
2019-08-06622450ND
2019-08-06622455ND
2019-08-06622457ND
2019-08-06622459ND
2019-08-06622448ND
2019-08-06622458ND
2019-08-06622451ND
2019-08-06622454ND
2019-08-066224560.640 ppb
2019-08-06622453ND
2019-11-056443870.510 ppb
2019-11-05644379ND
2019-11-05644378ND
2019-11-05644385ND
2019-11-05644382ND
2019-11-056443810.590 ppb
2019-11-05644383ND
2019-11-05644386ND
2019-11-056443800.510 ppb
2019-11-05644388ND
2019-11-05644384ND
2019-11-05644389ND
2020-02-04656186ND
2020-02-046561890.700 ppb
2020-02-04656190ND
2020-02-04656184ND
2020-02-04656185ND
2020-02-04656187ND
2020-02-04656182ND
2020-02-046561831.12 ppb
2020-02-04656193ND
2020-02-046561880.770 ppb
2020-02-046561910.700 ppb
2020-02-046561920.750 ppb
2020-04-20667072ND
2020-04-206670710.540 ppb
2020-05-056721080.880 ppb
2020-05-056721090.710 ppb
2020-05-056721030.870 ppb
2020-05-056721060.560 ppb
2020-05-056721020.990 ppb
2020-05-05672098ND
2020-05-05672107ND
2020-05-056721010.800 ppb
2020-05-056721050.530 ppb
2020-05-05672099ND
2020-05-05672100ND
2020-05-05672104ND
2020-06-01667076ND
2020-06-01667075ND
2020-06-01667073ND
2020-06-01667074ND
2020-08-04681798ND
2020-08-046818050.670 ppb
2020-08-046817960.640 ppb
2020-08-046818040.620 ppb
2020-08-046817990.720 ppb
2020-08-04681795ND
2020-08-046818000.690 ppb
2020-08-046818020.700 ppb
2020-08-046818011.05 ppb
2020-08-046818030.590 ppb
2020-08-046818060.560 ppb
2020-08-046817970.560 ppb
2020-11-10706880ND
2020-11-107068820.690 ppb
2020-11-107068890.870 ppb
2020-11-107068790.830 ppb
2020-11-10706881ND
2020-11-107068830.660 ppb
2020-11-107068860.850 ppb
2020-11-107068880.980 ppb
2020-11-107068780.920 ppb
2020-11-10706885ND
2020-11-10706887ND
2020-11-107068841.03 ppb
2021-02-027190240.530 ppb
2021-02-02719020ND
2021-02-02719019ND
2021-02-027190230.560 ppb
2021-02-027190220.870 ppb
2021-02-027190250.620 ppb
2021-02-02719026ND
2021-02-02719018ND
2021-02-027190170.660 ppb
2021-02-027190160.740 ppb
2021-02-02719015ND
2021-02-027190210.800 ppb
2021-05-047330310.570 ppb
2021-05-04733032ND
2021-05-04733028ND
2021-05-04733034ND
2021-05-04733033ND
2021-05-04733026ND
2021-05-04733029ND
2021-05-047330300.530 ppb
2021-05-04733027ND
2021-05-04733035ND
2021-05-04733036ND
2021-05-04733037ND
2021-08-04753576ND
2021-08-04753575ND
2021-08-04753580ND
2021-08-04753577ND
2021-08-04753570ND
2021-08-04753571ND
2021-08-04753581ND
2021-08-047535721.02 ppb
2021-08-047535780.540 ppb
2021-08-04753579ND
2021-08-04753574ND
2021-08-047535730.950 ppb
2021-11-037709010.780 ppb
2021-11-037708970.770 ppb
2021-11-037708980.740 ppb
2021-11-037709000.790 ppb
2021-11-03770890ND
2021-11-03770892ND
2021-11-037708990.760 ppb
2021-11-03770891ND
2021-11-03770894ND
2021-11-037708960.680 ppb
2021-11-037708930.520 ppb
2021-11-03770895ND
2022-02-23782425ND
2022-02-23782422ND
2022-02-237824280.650 ppb
2022-02-237824290.690 ppb
2022-02-23782420ND
2022-02-237824270.750 ppb
2022-02-23782421ND
2022-02-23782419ND
2022-02-23782423ND
2022-02-237824260.720 ppb
2022-02-23782418ND
2022-02-237824240.680 ppb
2022-04-267931530.850 ppb
2022-05-038003060.730 ppb
2022-05-038003131.12 ppb
2022-05-03800314ND
2022-05-038003121.09 ppb
2022-05-03800305ND
2022-05-038003070.790 ppb
2022-05-03800308ND
2022-05-038003090.560 ppb
2022-05-03800303ND
2022-05-03800311ND
2022-05-03800304ND
2022-05-038003100.560 ppb
2022-08-03815800ND
2022-08-03815794ND
2022-08-038157950.780 ppb
2022-08-03815797ND
2022-08-03815803ND
2022-08-03815804ND
2022-08-03815802ND
2022-08-03815801ND
2022-08-03815799ND
2022-08-038157960.580 ppb
2022-08-03815793ND
2022-08-03815798ND
2022-11-088337641.37 ppb
2022-11-08833766ND
2022-11-08833762ND
2022-11-08833755ND
2022-11-08833757ND
2022-11-08833758ND
2022-11-08833759ND
2022-11-08833760ND
2022-11-08833763ND
2022-11-088337651.25 ppb
2022-11-08833761ND
2022-11-08833756ND
2023-01-17844825ND
2023-02-07847425ND
2023-02-07847423ND
2023-02-078474240.600 ppb
2023-02-07847415ND
2023-02-07847421ND
2023-02-078474200.580 ppb
2023-02-07847418ND
2023-02-07847422ND
2023-02-07847414ND
2023-02-07847419ND
2023-02-07847416ND
2023-02-07847417ND
2023-05-028585500.680 ppb
2023-05-02858543ND
2023-05-028585490.730 ppb
2023-05-028585480.710 ppb
2023-05-028585420.660 ppb
2023-05-02858540ND
2023-05-028585390.650 ppb
2023-05-028585470.700 ppb
2023-05-02858545ND
2023-05-02858541ND
2023-05-028585460.690 ppb
2023-05-02858544ND
2023-06-08855997ND
2023-06-08855996ND
2023-06-12856264ND
2023-06-12856263ND
2023-08-088798770.510 ppb
2023-08-088798740.580 ppb
2023-08-088798781.07 ppb
2023-08-088798791.06 ppb
2023-08-088798800.640 ppb
2023-08-088798850.540 ppb
2023-08-08879876ND
2023-08-088798820.620 ppb
2023-08-088798750.620 ppb
2023-08-088798840.570 ppb
2023-08-088798831.29 ppb
2023-08-088798811.03 ppb
2023-11-078914210.800 ppb
2023-11-078914190.870 ppb
2023-11-078914200.690 ppb
2023-11-07891417ND
2023-11-07891424ND
2023-11-078914250.540 ppb
2023-11-07891423ND
2023-11-078914180.870 ppb
2023-11-07891427ND
2023-11-07891422ND
2023-11-07891428ND
2023-11-07891426ND