Know Your Environment. Protect Your Health.

Dibromochloromethane

Purcellville, Town of

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

112

Samples

0

Samples exceeding legal limit (MCL)

59

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.344 ppb167ND - 1.000 ppb
20190.456 ppb189ND - 1.20 ppb
20200.493 ppb149ND - 1.000 ppb
20210.843 ppb2315ND - 4.10 ppb
20220.577 ppb2212ND - 2.70 ppb
20230.258 ppb197ND - 1.000 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was 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 and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-15E1801003271.000 ppb
2018-02-15E180100335ND
2018-02-27E180100342ND
2018-05-14E180303862ND
2018-05-14E180303864ND
2018-05-23E180303850ND
2018-05-30E180303851ND
2018-08-15E1806019670.700 ppb
2018-08-15E1806019690.900 ppb
2018-08-21E180601975ND
2018-08-28E1806019711.000 ppb
2018-08-28E180601981ND
2018-11-14E1809013980.800 ppb
2018-11-14E1809014000.500 ppb
2018-11-19E1809014100.600 ppb
2018-12-11E180901404ND
2019-02-13E1811040120.800 ppb
2019-02-13E1811040170.900 ppb
2019-02-19E181104004ND
2019-02-19E181104015ND
2019-02-19E181104016ND
2019-03-21E190302948ND
2019-03-21E190302957ND
2019-05-14E1903048410.700 ppb
2019-05-14E1903048550.800 ppb
2019-05-29E190304839ND
2019-05-29E190304846ND
2019-08-13E1906099421.20 ppb
2019-08-13E1906099551.10 ppb
2019-09-10E190900749ND
2019-11-13E1910002591.10 ppb
2019-11-13E1910002611.000 ppb
2019-11-25E191000255ND
2019-12-04E1910002660.600 ppb
2020-02-12E1912036640.700 ppb
2020-02-12E1912036660.600 ppb
2020-02-25E191203663ND
2020-05-19E2003022950.600 ppb
2020-05-19E2003023110.900 ppb
2020-05-20E200302298ND
2020-06-16E200600508ND
2020-08-11E2006012741.000 ppb
2020-08-11E200601275ND
2020-08-11E2006012830.900 ppb
2020-10-19E2009062130.700 ppb
2020-11-16E2009062050.700 ppb
2020-11-16E2009062060.800 ppb
2020-11-16E200906214ND
2021-02-16E2101001120.700 ppb
2021-02-16E2101001220.600 ppb
2021-03-15E210100113ND
2021-05-12E2104006290.700 ppb
2021-05-12E2104006360.700 ppb
2021-05-12E2104006540.800 ppb
2021-05-12E2104006552.30 ppb
2021-05-17E210400628ND
2021-05-24E210400643ND
2021-08-11E2107019481.20 ppb
2021-08-11E2107019490.900 ppb
2021-08-11E2107031194.10 ppb
2021-08-11E2107031201.10 ppb
2021-08-23E210701941ND
2021-08-23E210701945ND
2021-08-23E2107055710.700 ppb
2021-11-15E210901974ND
2021-11-15E2109019750.700 ppb
2021-11-15E2109019760.700 ppb
2021-11-15E2109019773.50 ppb
2021-11-30E210901978ND
2021-11-30E210901979ND
2021-11-30E2111000540.700 ppb
2022-02-16E211201660ND
2022-02-16E2112016612.40 ppb
2022-02-16E211201662ND
2022-02-16E2112016630.500 ppb
2022-02-23E211201664ND
2022-02-23E211201665ND
2022-02-23E211201666ND
2022-02-23E2112061050.600 ppb
2022-05-16E2203036902.70 ppb
2022-05-16E2203036910.600 ppb
2022-05-16E220303692ND
2022-05-16E2203036930.600 ppb
2022-05-23E220303694ND
2022-05-23E220303695ND
2022-06-29E2206075280.900 ppb
2022-08-17E2208024611.30 ppb
2022-08-22E220607516ND
2022-09-01E2208042811.20 ppb
2022-11-14E2209043840.600 ppb
2022-11-14E2209043850.800 ppb
2022-11-14E220904386ND
2022-11-14E2209043870.500 ppb
2023-02-13E221203951ND
2023-02-13E2212039520.500 ppb
2023-02-13E221203953ND
2023-05-01E230305398ND
2023-05-01E230305409ND
2023-05-01E230305414ND
2023-05-16E2303046450.600 ppb
2023-05-16E2303046460.600 ppb
2023-05-17E230305386ND
2023-05-17E230305403ND
2023-05-17E2303054200.700 ppb
2023-05-17E230305423ND
2023-08-15E2306033791.000 ppb
2023-08-15E2306033800.900 ppb
2023-08-28E230603381ND
2023-11-01E230904714ND
2023-11-20E2309036170.600 ppb
2023-11-20E230903618ND
2023-12-07E230903619ND