EWG's Tap Water Database — 2019 UPDATE



Berea City PWS

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.





Samples exceeding legal limit (MCL)


Samples exceeding
health guidelines

Testing results - average by year

YearAverage resultSamples takenDetectionsRange of results
20123.08 ppb17170.760 ppb - 8.79 ppb
20132.87 ppb1715ND - 5.85 ppb
20145.51 ppb17170.650 ppb - 13.1 ppb
20153.15 ppb17170.660 ppb - 6.70 ppb
20162.51 ppb17170.700 ppb - 5.29 ppb
20172.50 ppb17170.610 ppb - 5.61 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
2012-03-1912C0975-010.970 ppb
2012-03-1912C0975-021.08 ppb
2012-03-1912C0975-031.02 ppb
2012-03-1912C0975-040.760 ppb
2012-04-1012D0606-021.45 ppb
2012-05-2112E1304-012.70 ppb
2012-05-2112E1304-022.28 ppb
2012-05-2112E1304-032.14 ppb
2012-05-2112E1304-041.94 ppb
2012-09-2112I1087-018.79 ppb
2012-09-2112I1087-027.74 ppb
2012-09-2112I1087-038.03 ppb
2012-09-2112I1087-046.64 ppb
2012-11-2612K1121-012.12 ppb
2012-11-2612K1121-021.63 ppb
2012-11-2612K1121-031.90 ppb
2012-11-2612K1121-041.17 ppb
2013-01-1613A0818-011.10 ppb
2013-01-1613A0818-031.61 ppb
2013-04-1913D1110-012.85 ppb
2013-04-1913D1110-025.85 ppb
2013-04-1913D1110-034.86 ppb
2013-04-1913D1110-043.54 ppb
2013-04-2213D1182-012.23 ppb
2013-07-1613G1003-011.80 ppb
2013-07-1613G1003-021.60 ppb
2013-07-1613G1003-031.72 ppb
2013-07-1613G1003-041.63 ppb
2013-10-1513J0972-015.27 ppb
2013-10-1513J0972-024.48 ppb
2013-10-1513J0972-035.41 ppb
2013-10-1513J0972-044.89 ppb
2014-01-0914A0519-021.25 ppb
2014-01-0914A0519-031.30 ppb
2014-01-0914A0519-043.07 ppb
2014-01-0914A0519-012.23 ppb
2014-04-0114D0201-015.82 ppb
2014-04-0114D0201-023.96 ppb
2014-04-0114D0201-033.34 ppb
2014-04-0114D0201-045.78 ppb
2014-04-1514D0957-010.650 ppb
2014-07-0714G0511-015.11 ppb
2014-07-0714G0511-024.66 ppb
2014-07-0714G0511-035.14 ppb
2014-07-0714G0511-044.99 ppb
2014-09-3014J0155-0113.1 ppb
2014-09-3014J0155-0210.5 ppb
2014-09-3014J0155-0312.2 ppb
2014-09-3014J0155-0410.7 ppb
2015-01-0715A0446-012.08 ppb
2015-01-0715A0446-020.730 ppb
2015-01-0715A0446-030.660 ppb
2015-01-0715A0446-041.40 ppb
2015-04-0215D0297-012.89 ppb
2015-04-0215D0297-023.17 ppb
2015-04-0215D0297-033.23 ppb
2015-04-0215D0297-042.92 ppb
2015-04-1715D1080-011.55 ppb
2015-07-0215G0273-012.75 ppb
2015-07-0215G0273-022.52 ppb
2015-07-0215G0273-031.77 ppb
2015-07-0215G0273-041.73 ppb
2015-10-0615J0453-016.45 ppb
2015-10-0615J0453-026.46 ppb
2015-10-0615J0453-036.70 ppb
2015-10-0615J0453-046.62 ppb
2016-01-0616A0417-010.960 ppb
2016-01-0616A0417-020.860 ppb
2016-01-0616A0417-030.700 ppb
2016-01-0616A0417-040.860 ppb
2016-04-0116D0125-010.800 ppb
2016-04-0116D0125-021.17 ppb
2016-04-0116D0125-031.02 ppb
2016-04-0116D0125-041.13 ppb
2016-04-2216D1459-011.53 ppb
2016-07-1916G1563-015.29 ppb
2016-07-1916G1563-024.67 ppb
2016-07-1916G1563-034.32 ppb
2016-07-1916G1563-044.96 ppb
2016-10-0716J0523-013.99 ppb
2016-10-0716J0523-024.09 ppb
2016-10-0716J0523-033.36 ppb
2016-10-0716J0523-043.02 ppb
2017-01-0617A0416-010.740 ppb
2017-01-0617A0416-020.620 ppb
2017-01-0617A0416-032.30 ppb
2017-01-0617A0416-040.710 ppb
2017-04-0717D0665-011.16 ppb
2017-04-0717D0665-020.920 ppb
2017-04-0717D0665-031.11 ppb
2017-04-0717D0665-040.670 ppb
2017-04-1017D0660-050.610 ppb
2017-07-0717G0639-013.36 ppb
2017-07-0717G0639-023.56 ppb
2017-07-0717G0639-033.70 ppb
2017-07-0717G0639-043.58 ppb
2017-10-1017J0751-015.61 ppb
2017-10-1017J0751-024.73 ppb
2017-10-1017J0751-034.88 ppb
2017-10-1017J0751-044.29 ppb