Know Your Environment. Protect Your Health.

Dibromochloromethane

Sammamish Plateau Water and Sewer

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.

 

166

Samples

0

Samples exceeding legal limit (MCL)

88

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.399 ppb3415ND - 1.27 ppb
20190.578 ppb3419ND - 1.57 ppb
2020N/A00N/A
20210.563 ppb3217ND - 1.98 ppb
20220.591 ppb3417ND - 2.11 ppb
20230.579 ppb3220ND - 3.21 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
2018-02-20ND
2018-02-20ND
2018-02-200.530 ppb
2018-02-200.660 ppb
2018-02-200.880 ppb
2018-02-20ND
2018-02-20ND
2018-02-20ND
2018-05-151.26 ppb
2018-05-150.840 ppb
2018-05-151.24 ppb
2018-05-150.500 ppb
2018-05-151.27 ppb
2018-05-15ND
2018-05-15ND
2018-05-150.550 ppb
2018-08-141.27 ppb
2018-08-140.520 ppb
2018-08-14ND
2018-08-14ND
2018-08-141.11 ppb
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-22ND
2018-08-22ND
2018-11-12ND
2018-11-12ND
2018-11-120.960 ppb
2018-11-12ND
2018-11-13ND
2018-11-131.07 ppb
2018-11-13ND
2018-11-130.910 ppb
2019-02-191.03 ppb
2019-02-190.920 ppb
2019-02-190.580 ppb
2019-02-190.640 ppb
2019-02-191.36 ppb
2019-02-19ND
2019-02-19ND
2019-02-190.580 ppb
2019-05-211.45 ppb
2019-05-211.13 ppb
2019-05-21ND
2019-05-210.530 ppb
2019-05-211.30 ppb
2019-05-21ND
2019-05-210.992 ppb
2019-05-22ND
2019-08-12ND
2019-08-12ND
2019-08-121.49 ppb
2019-08-12ND
2019-08-131.29 ppb
2019-08-130.932 ppb
2019-08-13ND
2019-08-130.648 ppb
2019-09-18ND
2019-10-30ND
2019-11-121.57 ppb
2019-11-120.985 ppb
2019-11-12ND
2019-11-12ND
2019-11-121.29 ppb
2019-11-12ND
2019-11-12ND
2019-11-120.929 ppb
2021-02-1640786481.26 ppb
2021-02-1640786430.605 ppb
2021-02-164078646ND
2021-02-164078642ND
2021-02-164078647ND
2021-02-1640786450.518 ppb
2021-02-1640786440.521 ppb
2021-02-1640786490.529 ppb
2021-05-184121059ND
2021-05-1841210570.659 ppb
2021-05-1841210550.699 ppb
2021-05-1841210610.525 ppb
2021-05-184121058ND
2021-05-1841210601.52 ppb
2021-05-1841210561.92 ppb
2021-05-184121054ND
2021-08-104172436ND
2021-08-104172433ND
2021-08-104172438ND
2021-08-1041724351.23 ppb
2021-08-104172437ND
2021-08-1041724340.784 ppb
2021-08-1041724391.98 ppb
2021-08-104172440ND
2021-11-1642062530.912 ppb
2021-11-1642062571.79 ppb
2021-11-164206252ND
2021-11-1642062590.926 ppb
2021-11-164206255ND
2021-11-1642062581.65 ppb
2021-11-164206254ND
2021-11-164206256ND
2022-02-154244686ND
2022-02-154244682ND
2022-02-1542446880.610 ppb
2022-02-1542446871.68 ppb
2022-02-1542446840.964 ppb
2022-02-154244681ND
2022-02-154244683ND
2022-02-154244685ND
2022-05-1742848800.641 ppb
2022-05-1742848850.745 ppb
2022-05-174284878ND
2022-05-174284882ND
2022-05-1742848790.891 ppb
2022-05-1742848810.906 ppb
2022-05-1742848830.842 ppb
2022-05-1742848842.11 ppb
2022-08-094330664ND
2022-08-0943306661.60 ppb
2022-08-0943306620.886 ppb
2022-08-094330660ND
2022-08-094330663ND
2022-08-094330667ND
2022-08-0943306610.894 ppb
2022-08-094330665ND
2022-08-174365563ND
2022-08-174365564ND
2022-11-1543744061.22 ppb
2022-11-1543744051.76 ppb
2022-11-1543744071.35 ppb
2022-11-154374409ND
2022-11-1543744102.07 ppb
2022-11-1543744110.912 ppb
2022-11-154374404ND
2022-11-154374408ND
2023-02-144412877ND
2023-02-1444128791.09 ppb
2023-02-144412880ND
2023-02-1444128740.595 ppb
2023-02-1444128760.701 ppb
2023-02-144412878ND
2023-02-144412873ND
2023-02-1444128750.539 ppb
2023-05-094452336ND
2023-05-0944523370.556 ppb
2023-05-094452338ND
2023-05-094452339ND
2023-05-0944523350.731 ppb
2023-05-0944523410.628 ppb
2023-05-094452334ND
2023-05-0944523401.54 ppb
2023-08-154499244ND
2023-08-1544992460.780 ppb
2023-08-1544992421.29 ppb
2023-08-154499240ND
2023-08-1544992410.783 ppb
2023-08-1544992470.561 ppb
2023-08-154499245ND
2023-08-154499243ND
2023-11-1445483360.920 ppb
2023-11-1445483300.803 ppb
2023-11-1445483340.636 ppb
2023-11-1445483320.831 ppb
2023-11-1445483290.901 ppb
2023-11-1445483310.680 ppb
2023-11-1445483330.748 ppb
2023-11-1445483353.21 ppb