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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Harbor Point

NOTE: Harbor Point purchases water from Trinity Rural Water Supply Corporation 3 which is required to test for bromoform. Sample information shown below was taken by Trinity Rural Water Supply Corporation 3.

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
20132.32 ppb32ND - 3.84 ppb
201415.2 ppb2214.3 ppb - 16.0 ppb
20158.68 ppb228.11 ppb - 9.24 ppb
201610.6 ppb2210.4 ppb - 10.8 ppb
20175.28 ppb224.86 ppb - 5.69 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

NOTE: Harbor Point purchases water from Trinity Rural Water Supply Corporation 3 which is required to test for bromoform. Sample information shown below was taken by Trinity Rural Water Supply Corporation 3.

Date Lab ID Result
2012-06-211206786005ND
2013-06-19Q13025540053.13 ppb
2013-06-19Q13025540043.84 ppb
2013-12-12Q1317493002ND
2014-09-16Q14451170023.10 ppb
2014-12-10Q14596280059.41 ppb
2015-09-22Q153717700117.6 ppb
2015-12-14Q15496420065.10 ppb
2016-06-08Q16232540032.83 ppb
2016-12-02Q16527570015.65 ppb
2017-06-06Q17243030022.18 ppb
2017-11-07Q175716600446.1 ppb