EWG's Tap Water Database — 2021 UPDATE



Green Meadows Subdivision

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





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20150.700 ppb110.700 ppb
20160.600 ppb43ND - 1.30 ppb
20170.925 ppb440.600 ppb - 1.30 ppb
20180.300 ppb21ND - 0.600 ppb
20191.55 ppb220.800 ppb - 2.30 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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
2015-11-09VA010-DCLS0.700 ppb
2016-03-02E1601028900.500 ppb
2016-07-25E1606081681.30 ppb
2016-07-25E1606081670.600 ppb
2017-02-15E1612018800.600 ppb
2017-05-24E1703028181.000 ppb
2017-08-15E1706003651.30 ppb
2017-12-05E1708054980.800 ppb
2018-01-29E1712056740.600 ppb
2019-07-22E1906064502.30 ppb
2019-07-22E1906064510.800 ppb