Dibromochloromethane
Rockaway Twp Water Department
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.
293
Samples
0
Samples exceeding legal limit (MCL)
112
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 1.55 ppb | 53 | 22 | ND - 9.10 ppb |
| 2015 | 1.34 ppb | 49 | 19 | ND - 6.80 ppb |
| 2016 | 0.903 ppb | 44 | 17 | ND - 4.56 ppb |
| 2017 | 1.17 ppb | 43 | 17 | ND - 5.49 ppb |
| 2018 | 1.68 ppb | 52 | 21 | ND - 8.00 ppb |
| 2019 | 1.43 ppb | 52 | 16 | ND - 8.40 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.1 ppb
The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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 |
|---|---|---|
| 2014-01-06 | 340107125 | ND |
| 2014-01-13 | 340114108 | ND |
| 2014-01-27 | 340128119 | 2.20 ppb |
| 2014-02-04 | 340204154 | ND |
| 2014-02-10 | 340211193 | ND |
| 2014-02-24 | 340225080 | 2.60 ppb |
| 2014-03-03 | 340305016 | 1.000 ppb |
| 2014-03-03 | 340305018 | 4.00 ppb |
| 2014-03-03 | 340305015 | 2.90 ppb |
| 2014-03-03 | 340305017 | 2.40 ppb |
| 2014-03-03 | 340305020 | ND |
| 2014-03-10 | 340311182 | ND |
| 2014-03-17 | 340318128 | ND |
| 2014-03-31 | 340401179 | ND |
| 2014-04-07 | 340408139 | ND |
| 2014-04-14 | 340415176 | ND |
| 2014-05-05 | 340506292 | ND |
| 2014-05-12 | 340514005 | ND |
| 2014-05-19 | 340520054 | 4.50 ppb |
| 2014-06-02 | 340604023 | 2.30 ppb |
| 2014-06-02 | 340604025 | 8.20 ppb |
| 2014-06-02 | 340604022 | 9.10 ppb |
| 2014-06-02 | 340604024 | 5.30 ppb |
| 2014-06-02 | 340604016 | ND |
| 2014-06-09 | 340610110 | ND |
| 2014-06-16 | 340617067 | 0.800 ppb |
| 2014-07-01 | 340701106 | ND |
| 2014-07-07 | 340708138 | ND |
| 2014-07-14 | 340716011 | 2.60 ppb |
| 2014-08-04 | 340805152 | ND |
| 2014-08-11 | 340812099 | ND |
| 2014-08-18 | 340819089 | ND |
| 2014-09-02 | 340903002 | ND |
| 2014-09-08 | 340909045 | 1.60 ppb |
| 2014-09-08 | 340909047 | 6.30 ppb |
| 2014-09-08 | 340909044 | 8.00 ppb |
| 2014-09-08 | 340909046 | 5.20 ppb |
| 2014-09-08 | 340909049 | ND |
| 2014-09-15 | 340916160 | ND |
| 2014-09-23 | 340923045 | ND |
| 2014-10-06 | 341007121 | ND |
| 2014-10-14 | 341015008 | ND |
| 2014-10-28 | 341028121 | ND |
| 2014-11-03 | 341104099 | ND |
| 2014-11-17 | 341118129 | ND |
| 2014-11-24 | 341125048 | ND |
| 2014-12-01 | 341202108 | ND |
| 2014-12-15 | 341216055 | 1.000 ppb |
| 2014-12-15 | 341216057 | 4.50 ppb |
| 2014-12-15 | 341216054 | 4.00 ppb |
| 2014-12-15 | 341216056 | 3.20 ppb |
| 2014-12-15 | 341216065 | ND |
| 2014-12-22 | 341223049 | 0.500 ppb |
| 2015-01-05 | 350106071 | ND |
| 2015-01-12 | 350113051 | ND |
| 2015-01-28 | 350129078 | ND |
| 2015-02-18 | 350218105 | ND |
| 2015-02-18 | 350218107 | ND |
| 2015-02-24 | 350224065 | ND |
| 2015-03-09 | 350310149 | 2.40 ppb |
| 2015-03-09 | 350310151 | 4.70 ppb |
| 2015-03-09 | 350310148 | 6.80 ppb |
| 2015-03-09 | 350310150 | 4.10 ppb |
| 2015-03-16 | 350317080 | ND |
| 2015-03-16 | 350317082 | ND |
| 2015-03-23 | 350324087 | ND |
| 2015-04-06 | 350407144 | ND |
| 2015-04-13 | 350414114 | ND |
| 2015-04-20 | 350421076 | ND |
| 2015-05-11 | N026255-04VOC | ND |
| 2015-05-19 | N026388-11VOC | ND |
| 2015-05-19 | N026388-02VOC | ND |
| 2015-06-02 | N026706-02 | ND |
| 2015-06-08 | N026904-10 | 1.80 ppb |
| 2015-06-08 | N026905-09 | 6.36 ppb |
| 2015-06-08 | N026904-09 | 5.86 ppb |
| 2015-06-08 | N026905-08 | 3.72 ppb |
| 2015-06-08 | N026904-04 | ND |
| 2015-06-15 | N027064-02 | ND |
| 2015-07-07 | N027538-02 | ND |
| 2015-07-14 | N027760-04 | ND |
| 2015-07-21 | N027919-05 | 0.510 ppb |
| 2015-08-03 | N028230-02 | ND |
| 2015-08-10 | N028484-04 | ND |
| 2015-08-18 | N028677-01 | ND |
| 2015-09-01 | N029004-15 | 2.34 ppb |
| 2015-09-01 | N029004-13 | 1.87 ppb |
| 2015-09-01 | N029004-12 | 2.69 ppb |
| 2015-09-01 | N029004-14 | 2.20 ppb |
| 2015-09-08 | N029210-04 | ND |
| 2015-09-08 | N029210-06 | ND |
| 2015-09-22 | N029606-01 | ND |
| 2015-10-06 | N0299447-02 | ND |
| 2015-10-20 | N030278-02 | ND |
| 2015-11-03 | N030586-02 | ND |
| 2015-11-10 | N030793-04 | ND |
| 2015-11-17 | N030943-02 | 0.990 ppb |
| 2015-11-30 | N031231-06 | 4.52 ppb |
| 2015-11-30 | N031231-08 | 6.32 ppb |
| 2015-11-30 | N031231-05 | 3.77 ppb |
| 2015-11-30 | N031231-07 | 2.96 ppb |
| 2015-12-15 | N031692-02 | 1.75 ppb |
| 2016-01-05 | N032040-01 | ND |
| 2016-01-19 | N032409-02 | ND |
| 2016-02-09 | N032895-04 | ND |
| 2016-03-01 | N033308-06 | 3.40 ppb |
| 2016-03-01 | N033308-08 | 3.49 ppb |
| 2016-03-01 | N033308-05 | 2.42 ppb |
| 2016-03-01 | N033308-07 | 1.90 ppb |
| 2016-03-08 | N033521-11 | ND |
| 2016-03-08 | N033521-13 | ND |
| 2016-03-15 | N033711-09 | ND |
| 2016-04-05 | N034232-01 | ND |
| 2016-04-11 | N034440-04 | ND |
| 2016-04-19 | N034612-01 | ND |
| 2016-06-13 | N036410-04VOC | ND |
| 2016-06-14 | N036408-06 | 1.34 ppb |
| 2016-06-14 | N036408-08 | 1.98 ppb |
| 2016-06-14 | N036408-05 | 2.62 ppb |
| 2016-06-14 | N036408-07 | 1.19 ppb |
| 2016-06-21 | N036712-02 | ND |
| 2016-07-05 | N037215-02 | ND |
| 2016-07-11 | N037562-04 | ND |
| 2016-07-18 | N037869-09 | ND |
| 2016-08-01 | N038326-02VOC | ND |
| 2016-08-08 | N038678-04 | ND |
| 2016-08-15 | N039004-02 | ND |
| 2016-09-06 | N039698-06 | 0.530 ppb |
| 2016-09-06 | N039698-08 | 1.82 ppb |
| 2016-09-06 | N039698-05 | 2.10 ppb |
| 2016-09-06 | N039698-07 | 1.78 ppb |
| 2016-09-13 | N040056-04 | ND |
| 2016-09-13 | N040056-06 | ND |
| 2016-09-20 | N040315-02 | ND |
| 2016-10-03 | N041079-02 | ND |
| 2016-10-11 | N041316-03 | ND |
| 2016-10-17 | N041586-09 | 1.31 ppb |
| 2016-10-31 | N042042-02 | ND |
| 2016-11-07 | N042398-04 | ND |
| 2016-12-05 | N043277-06 | 3.18 ppb |
| 2016-12-05 | N043277-08 | 4.56 ppb |
| 2016-12-05 | N043277-05 | 2.96 ppb |
| 2016-12-05 | N043277-07 | 3.17 ppb |
| 2016-12-12 | N043645-04 | ND |
| 2016-12-12 | N043645-06 | ND |
| 2016-12-20 | N043908-02 | ND |
| 2017-01-03 | N044185-02 | ND |
| 2017-01-09 | N044507-02 | ND |
| 2017-02-13 | N045867-04 | ND |
| 2017-02-13 | N045867-06 | ND |
| 2017-02-21 | N046126-02 | ND |
| 2017-03-07 | N046704-04 | 4.09 ppb |
| 2017-03-07 | N046704-06 | 3.60 ppb |
| 2017-03-07 | N046705-01 | 2.93 ppb |
| 2017-03-07 | N046704-05 | 2.80 ppb |
| 2017-03-20 | N047198-04 | ND |
| 2017-03-20 | N047198-06 | ND |
| 2017-04-04 | N047667-02 | ND |
| 2017-04-10 | N048062-04 | ND |
| 2017-05-08 | N049268-04 | ND |
| 2017-05-08 | N049269-02 | ND |
| 2017-05-16 | N049575-02 | 2.66 ppb |
| 2017-06-13 | N050782-02 | 1.67 ppb |
| 2017-06-13 | N050782-04 | 1.84 ppb |
| 2017-06-13 | N050782-01 | 5.49 ppb |
| 2017-06-13 | N050782-03 | 1.84 ppb |
| 2017-07-11 | N051806-02 | ND |
| 2017-07-17 | N052179-04 | ND |
| 2017-07-24 | N052479-02 | 0.640 ppb |
| 2017-08-08 | N053065-08 | ND |
| 2017-08-15 | N053362-04 | ND |
| 2017-08-22 | N053664-02 | ND |
| 2017-09-25 | N055008-02 | ND |
| 2017-09-25 | N055008-04 | 3.53 ppb |
| 2017-09-25 | N055008-01 | 4.01 ppb |
| 2017-09-25 | N055008-03 | 2.82 ppb |
| 2017-10-03 | N055286-02 | ND |
| 2017-10-16 | N055855-04 | ND |
| 2017-10-16 | N055854-02 | ND |
| 2017-11-07 | N056612-09 | ND |
| 2017-11-14 | N056859-04 | ND |
| 2017-11-20 | N057130-25 | ND |
| 2017-12-05 | N057499-06 | 3.38 ppb |
| 2017-12-05 | N057499-08 | 3.72 ppb |
| 2017-12-05 | N057499-05 | 2.54 ppb |
| 2017-12-05 | N057499-07 | 2.71 ppb |
| 2017-12-05 | N057498-01 | ND |
| 2017-12-11 | N057859-02 | ND |
| 2017-12-19 | N058124-03 | ND |
| 2018-01-09 | N058709-02VOC | ND |
| 2018-01-16 | N059016-04 | ND |
| 2018-01-23 | N059227-09VOC | ND |
| 2018-02-13 | 380213187 | ND |
| 2018-02-28 | 380228134 | ND |
| 2018-02-28 | 380228136 | 1.40 ppb |
| 2018-03-06 | 380306194 | 2.80 ppb |
| 2018-03-06 | 380306196 | 5.20 ppb |
| 2018-03-06 | 380306193 | 4.40 ppb |
| 2018-03-06 | 380306195 | 4.30 ppb |
| 2018-03-13 | 380313194 | ND |
| 2018-03-13 | 380313190 | ND |
| 2018-03-20 | 380320150 | ND |
| 2018-04-03 | 380403140 | ND |
| 2018-04-10 | 380410161 | ND |
| 2018-04-17 | 380417196 | ND |
| 2018-05-08 | 380508174 | ND |
| 2018-05-08 | 380508170 | ND |
| 2018-05-14 | 380515206 | 0.800 ppb |
| 2018-06-05 | 380605167 | 1.60 ppb |
| 2018-06-10 | 380612225 | 1.60 ppb |
| 2018-06-10 | 380612227 | 7.90 ppb |
| 2018-06-10 | 380612224 | 6.20 ppb |
| 2018-06-10 | 380612226 | 4.50 ppb |
| 2018-06-11 | 380612235 | ND |
| 2018-06-18 | 380619030 | ND |
| 2018-07-02 | 380703146 | ND |
| 2018-07-09 | 380710163 | ND |
| 2018-07-16 | 380717209 | 1.60 ppb |
| 2018-08-06 | 380807154 | ND |
| 2018-08-13 | 380814209 | ND |
| 2018-08-28 | 380828169 | ND |
| 2018-09-04 | 380904204 | 3.20 ppb |
| 2018-09-04 | 380904206 | 6.60 ppb |
| 2018-09-04 | 380904203 | 8.00 ppb |
| 2018-09-04 | 380904205 | 4.60 ppb |
| 2018-09-11 | 380911179 | ND |
| 2018-09-11 | 380911181 | ND |
| 2018-09-17 | 380918104 | ND |
| 2018-10-01 | 381002204 | ND |
| 2018-10-09 | 381009166 | ND |
| 2018-10-16 | 381016179 | ND |
| 2018-11-06 | 381106079 | ND |
| 2018-11-13 | 381113103 | ND |
| 2018-11-19 | 381120160 | ND |
| 2018-12-04 | 381204131 | ND |
| 2018-12-04 | 381204133 | 1.50 ppb |
| 2018-12-10 | 381211095 | 4.50 ppb |
| 2018-12-10 | 381211097 | 6.20 ppb |
| 2018-12-10 | 381211094 | 6.90 ppb |
| 2018-12-10 | 381211096 | 3.40 ppb |
| 2018-12-17 | 381218179 | ND |
| 2019-01-09 | 390110102 | ND |
| 2019-01-15 | 390116175 | ND |
| 2019-01-23 | 390123150 | ND |
| 2019-02-21 | 390221099 | ND |
| 2019-02-21 | 390221104 | ND |
| 2019-02-21 | 390221102 | ND |
| 2019-03-13 | 390313200.1 | 1.60 ppb |
| 2019-03-13 | 390313202.1 | 3.80 ppb |
| 2019-03-13 | 390313203.1 | 3.50 ppb |
| 2019-03-13 | 390313201.1 | 2.20 ppb |
| 2019-03-13 | 390313208 | ND |
| 2019-03-13 | 390313210 | ND |
| 2019-03-20 | 390320095 | ND |
| 2019-04-03 | 390403055 | ND |
| 2019-04-10 | 390410151 | ND |
| 2019-04-17 | 390417139 | ND |
| 2019-05-01 | 390501190 | ND |
| 2019-05-01 | 390501195 | ND |
| 2019-05-01 | 390501193 | ND |
| 2019-06-12 | 390612134.1 | 3.60 ppb |
| 2019-06-12 | 390612136.1 | 4.80 ppb |
| 2019-06-12 | 390612137.1 | 5.90 ppb |
| 2019-06-12 | 390612135.1 | 4.40 ppb |
| 2019-06-12 | 390612142 | ND |
| 2019-06-19 | 390619227 | ND |
| 2019-06-19 | 390619224 | ND |
| 2019-07-03 | 390703115 | ND |
| 2019-07-10 | 390710240 | ND |
| 2019-07-17 | 390717230 | ND |
| 2019-08-07 | 390807235 | ND |
| 2019-08-14 | 390814221 | ND |
| 2019-08-21 | 390821170 | ND |
| 2019-09-11 | 390911246 | 5.00 ppb |
| 2019-09-11 | 390911248 | 7.00 ppb |
| 2019-09-11 | 390911249 | 6.70 ppb |
| 2019-09-11 | 390911247 | 6.70 ppb |
| 2019-09-18 | 390918143 | ND |
| 2019-09-18 | 390918148 | ND |
| 2019-09-18 | 390918145 | ND |
| 2019-10-02 | 391003158 | ND |
| 2019-10-02 | 391003163 | ND |
| 2019-10-02 | 391003161 | ND |
| 2019-11-06 | 391106154 | ND |
| 2019-11-06 | 391106157 | ND |
| 2019-11-06 | 391106159 | ND |
| 2019-12-04 | 391204138 | 2.70 ppb |
| 2019-12-04 | 391204140 | 5.60 ppb |
| 2019-12-04 | 391204141 | 8.40 ppb |
| 2019-12-04 | 391204139 | 2.70 ppb |
| 2019-12-04 | 391204133 | ND |
| 2019-12-04 | 391204136 | ND |
| 2019-12-04 | 391204128 | ND |