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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Wayland Water Department

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.

MORE ABOUT THIS CONTAMINANT

 

254

Samples

0

Samples exceeding legal limit (MCL)

200

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.264 ppb146ND - 0.700 ppb
20151.20 ppb4840ND - 4.09 ppb
20161.17 ppb4840ND - 3.61 ppb
20171.04 ppb4838ND - 2.92 ppb
20181.44 ppb4838ND - 7.76 ppb
20192.06 ppb4842ND - 5.27 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 Result
2014-04-010.550 ppb
2014-04-010.550 ppb
2014-07-01ND
2014-07-01ND
2014-07-01ND
2014-07-01ND
2014-07-01ND
2014-07-01ND
2014-07-01ND
2014-07-01ND
2014-07-010.600 ppb
2014-07-010.600 ppb
2014-10-070.700 ppb
2014-10-070.700 ppb
2015-01-06ND
2015-01-06ND
2015-02-050.690 ppb
2015-02-050.690 ppb
2015-02-050.520 ppb
2015-02-050.520 ppb
2015-02-050.620 ppb
2015-02-050.620 ppb
2015-02-050.960 ppb
2015-02-050.960 ppb
2015-04-140.700 ppb
2015-04-140.700 ppb
2015-05-051.04 ppb
2015-05-051.04 ppb
2015-05-050.870 ppb
2015-05-050.870 ppb
2015-05-051.63 ppb
2015-05-051.63 ppb
2015-05-051.23 ppb
2015-05-051.23 ppb
2015-07-07ND
2015-07-07ND
2015-07-07ND
2015-07-07ND
2015-07-07ND
2015-07-07ND
2015-07-070.500 ppb
2015-07-070.500 ppb
2015-07-070.800 ppb
2015-07-070.800 ppb
2015-08-041.15 ppb
2015-08-041.15 ppb
2015-08-041.06 ppb
2015-08-041.06 ppb
2015-08-041.04 ppb
2015-08-041.04 ppb
2015-08-042.34 ppb
2015-08-042.34 ppb
2015-10-060.710 ppb
2015-10-060.710 ppb
2015-11-042.89 ppb
2015-11-042.89 ppb
2015-11-043.06 ppb
2015-11-043.06 ppb
2015-11-044.09 ppb
2015-11-044.09 ppb
2015-11-043.00 ppb
2015-11-043.00 ppb
2016-01-190.800 ppb
2016-01-190.800 ppb
2016-02-021.68 ppb
2016-02-021.68 ppb
2016-02-020.870 ppb
2016-02-020.870 ppb
2016-02-020.960 ppb
2016-02-020.960 ppb
2016-02-021.54 ppb
2016-02-021.54 ppb
2016-04-050.700 ppb
2016-04-050.700 ppb
2016-05-030.980 ppb
2016-05-030.980 ppb
2016-05-030.850 ppb
2016-05-030.850 ppb
2016-05-031.05 ppb
2016-05-031.05 ppb
2016-05-030.740 ppb
2016-05-030.740 ppb
2016-07-05ND
2016-07-05ND
2016-07-05ND
2016-07-05ND
2016-07-05ND
2016-07-05ND
2016-07-050.900 ppb
2016-07-050.900 ppb
2016-07-050.600 ppb
2016-07-050.600 ppb
2016-08-021.49 ppb
2016-08-021.49 ppb
2016-08-021.000 ppb
2016-08-021.000 ppb
2016-08-021.54 ppb
2016-08-021.54 ppb
2016-08-022.32 ppb
2016-08-022.32 ppb
2016-10-04ND
2016-10-04ND
2016-11-012.34 ppb
2016-11-012.34 ppb
2016-11-011.45 ppb
2016-11-011.45 ppb
2016-11-012.61 ppb
2016-11-012.61 ppb
2016-11-013.61 ppb
2016-11-013.61 ppb
2017-01-030.530 ppb
2017-01-030.530 ppb
2017-02-071.34 ppb
2017-02-071.34 ppb
2017-02-070.880 ppb
2017-02-070.880 ppb
2017-02-072.25 ppb
2017-02-072.25 ppb
2017-02-071.35 ppb
2017-02-071.35 ppb
2017-04-040.500 ppb
2017-04-040.500 ppb
2017-05-031.74 ppb
2017-05-031.74 ppb
2017-05-030.990 ppb
2017-05-030.990 ppb
2017-05-031.43 ppb
2017-05-031.43 ppb
2017-05-032.09 ppb
2017-05-032.09 ppb
2017-07-05ND
2017-07-05ND
2017-07-05ND
2017-07-05ND
2017-07-05ND
2017-07-05ND
2017-07-05ND
2017-07-05ND
2017-07-05ND
2017-07-05ND
2017-08-010.860 ppb
2017-08-010.860 ppb
2017-08-010.900 ppb
2017-08-010.900 ppb
2017-08-011.38 ppb
2017-08-011.38 ppb
2017-08-012.04 ppb
2017-08-012.04 ppb
2017-10-030.630 ppb
2017-10-030.630 ppb
2017-11-071.65 ppb
2017-11-071.65 ppb
2017-11-070.600 ppb
2017-11-070.600 ppb
2017-11-070.800 ppb
2017-11-070.800 ppb
2017-11-072.92 ppb
2017-11-072.92 ppb
2018-01-02ND
2018-01-02ND
2018-02-061.32 ppb
2018-02-061.32 ppb
2018-02-060.720 ppb
2018-02-060.720 ppb
2018-02-060.760 ppb
2018-02-060.760 ppb
2018-02-061.53 ppb
2018-02-061.53 ppb
2018-04-030.600 ppb
2018-04-030.600 ppb
2018-05-011.62 ppb
2018-05-011.62 ppb
2018-05-011.08 ppb
2018-05-011.08 ppb
2018-05-011.26 ppb
2018-05-011.26 ppb
2018-05-012.48 ppb
2018-05-012.48 ppb
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-100.700 ppb
2018-07-100.700 ppb
2018-08-071.89 ppb
2018-08-071.89 ppb
2018-08-070.890 ppb
2018-08-070.890 ppb
2018-08-071.14 ppb
2018-08-071.14 ppb
2018-08-074.33 ppb
2018-08-074.33 ppb
2018-10-020.570 ppb
2018-10-020.570 ppb
2018-11-067.76 ppb
2018-11-067.76 ppb
2018-11-060.860 ppb
2018-11-060.860 ppb
2018-11-061.33 ppb
2018-11-061.33 ppb
2018-11-063.60 ppb
2018-11-063.60 ppb
2019-01-08ND
2019-01-08ND
2019-02-051.50 ppb
2019-02-051.50 ppb
2019-02-050.870 ppb
2019-02-050.870 ppb
2019-02-052.95 ppb
2019-02-052.95 ppb
2019-02-052.83 ppb
2019-02-052.83 ppb
2019-04-090.700 ppb
2019-04-090.700 ppb
2019-05-070.720 ppb
2019-05-070.720 ppb
2019-05-070.700 ppb
2019-05-070.700 ppb
2019-05-072.89 ppb
2019-05-072.89 ppb
2019-05-072.54 ppb
2019-05-072.54 ppb
2019-07-023.45 ppb
2019-07-023.45 ppb
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-020.550 ppb
2019-07-020.550 ppb
2019-07-020.810 ppb
2019-07-020.810 ppb
2019-08-061.85 ppb
2019-08-061.85 ppb
2019-08-063.33 ppb
2019-08-063.33 ppb
2019-08-062.37 ppb
2019-08-062.37 ppb
2019-08-064.77 ppb
2019-08-064.77 ppb
2019-10-070.620 ppb
2019-10-070.620 ppb
2019-11-052.24 ppb
2019-11-052.24 ppb
2019-11-053.35 ppb
2019-11-053.35 ppb
2019-11-055.23 ppb
2019-11-055.23 ppb
2019-11-055.27 ppb
2019-11-055.27 ppb