Dibromochloromethane
Jamestown BPU
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.
92
Samples
0
Samples exceeding legal limit (MCL)
92
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 5.63 ppb | 12 | 12 | 1.54 ppb - 9.14 ppb |
| 2015 | 5.02 ppb | 16 | 16 | 1.19 ppb - 11.1 ppb |
| 2016 | 5.34 ppb | 16 | 16 | 0.970 ppb - 13.0 ppb |
| 2017 | 4.91 ppb | 16 | 16 | 0.990 ppb - 9.50 ppb |
| 2018 | 5.24 ppb | 16 | 16 | 1.40 ppb - 11.0 ppb |
| 2019 | 4.64 ppb | 16 | 16 | 1.000 ppb - 9.10 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 |
|---|---|---|
| 2014-05-22 | MAY14 WWTP | 1.54 ppb |
| 2014-05-22 | MAY14 FIREHALL | 6.06 ppb |
| 2014-05-22 | MAY14 BOCES | 5.89 ppb |
| 2014-05-22 | MAY14 ARIPORT | 8.72 ppb |
| 2014-08-07 | AUG14 WWPT | 2.02 ppb |
| 2014-08-07 | AUG14 AIRPORT | 8.31 ppb |
| 2014-08-07 | AUG14 BOCES | 6.80 ppb |
| 2014-08-07 | AUG14 FIREHALL | 3.49 ppb |
| 2014-11-13 | NOV14 BUSTI FIRE | 6.31 ppb |
| 2014-11-13 | NOV14 BOCES | 7.39 ppb |
| 2014-11-13 | NOV14 AIRPORT | 9.14 ppb |
| 2014-11-13 | NOV14 WWTP, QUAI | 1.83 ppb |
| 2015-02-05 | FEB15 BOCES | 3.37 ppb |
| 2015-02-05 | FEB15 WWTP | 1.19 ppb |
| 2015-02-05 | FEB15 BUSTI FIRE | 3.86 ppb |
| 2015-02-05 | FEB15 AIRPORT | 6.63 ppb |
| 2015-05-07 | MAY15 BOCES | 4.10 ppb |
| 2015-05-07 | MAY15 QUAINT RD | 1.89 ppb |
| 2015-05-07 | MAY15 BUSTI FIRE | 4.15 ppb |
| 2015-05-07 | MAY15 AIRPORT | 6.05 ppb |
| 2015-08-06 | AUG 2015 BUSTI F | 8.12 ppb |
| 2015-08-06 | AUG 2015 BOCES | 9.84 ppb |
| 2015-08-06 | AUG15 WWTP DBP | 2.71 ppb |
| 2015-08-06 | AUG2015 AIRPORT | 11.1 ppb |
| 2015-11-05 | NOV 2015 BUSTI F | 4.30 ppb |
| 2015-11-05 | NOV2015 WWTP | 1.88 ppb |
| 2015-11-05 | NOV 2015 AIRPORT | 6.74 ppb |
| 2015-11-05 | NOV 2015 BOCES | 4.45 ppb |
| 2016-02-10 | FEB16 QUAINT ROA | 1.20 ppb |
| 2016-02-10 | FEB16 BUSTI FIRE | 5.20 ppb |
| 2016-02-10 | FEB16 AIRPORT DB | 6.70 ppb |
| 2016-02-10 | FEB16 BOCES DBP' | 6.30 ppb |
| 2016-05-04 | 2NDQT16 BOCES JA | 5.00 ppb |
| 2016-05-04 | 2NDQT16 WWTP JAM | 0.970 ppb |
| 2016-05-04 | 2NDQT16 BUSTI FD | 4.70 ppb |
| 2016-05-04 | 2NDQT16 AIRPORT | 6.30 ppb |
| 2016-08-17 | AUG16 AIRPORT | 7.20 ppb |
| 2016-08-17 | AUG16 BOCES | 6.60 ppb |
| 2016-08-17 | AUG16 BUSTI FIRE | 5.30 ppb |
| 2016-08-17 | AUG16 WWTP | 2.10 ppb |
| 2016-11-09 | NOV16 AIRPORT DB | 13.0 ppb |
| 2016-11-09 | NOV16 BUSTI FD D | 6.20 ppb |
| 2016-11-09 | NOV16 BOCES DBPS | 6.50 ppb |
| 2016-11-09 | NOV16 WWTP DBPS | 2.20 ppb |
| 2017-02-08 | FEB17 AIRPORT | 7.70 ppb |
| 2017-02-08 | FEB17 WWTP | 1.50 ppb |
| 2017-02-08 | FEB17 BOCES | 4.80 ppb |
| 2017-02-08 | FEB17 BUSTI FIRE | 3.90 ppb |
| 2017-05-08 | MAY17 AIRPORT DB | 5.80 ppb |
| 2017-05-08 | MAY17 DBP BOCES | 4.40 ppb |
| 2017-05-08 | MAY17 WWTP DBP | 1.10 ppb |
| 2017-05-08 | MAY17 DBP BUSTI | 5.20 ppb |
| 2017-08-09 | AUG17 BOCES BPU | 7.50 ppb |
| 2017-08-09 | AUG17 WWTP BPU | 1.20 ppb |
| 2017-08-09 | AUG17 AIRPORT BP | 8.90 ppb |
| 2017-08-09 | AUG17BUSTI FIRE | 5.40 ppb |
| 2017-11-08 | NOV17 BOCES DBPS | 5.50 ppb |
| 2017-11-08 | NOV17 WWTP | 0.990 ppb |
| 2017-11-08 | NOV17 AIRPORT DB | 9.50 ppb |
| 2017-11-08 | NOV17 BUSTI DBPS | 5.10 ppb |
| 2018-03-28 | Q1JAMESTOWN 18 B | 3.70 ppb |
| 2018-03-28 | Q1JAMESTOWN 18 W | 1.40 ppb |
| 2018-03-28 | Q1JAMESTOWN 18 A | 5.60 ppb |
| 2018-03-28 | Q1JAMESTOWN 18 B | 4.40 ppb |
| 2018-05-16 | Q2JAMESTOWN 18 B | 4.70 ppb |
| 2018-05-16 | Q2JAMESTOWN 18 B | 4.50 ppb |
| 2018-05-16 | Q2JAMESTOWN 18 W | 2.00 ppb |
| 2018-05-16 | Q2JAMESTOWN 18 A | 6.30 ppb |
| 2018-08-08 | Q3JAMESTOWN 18 W | 1.90 ppb |
| 2018-08-08 | Q3JAMESTOWN 18 A | 9.20 ppb |
| 2018-08-08 | Q3JAMESTOWN 18 B | 8.40 ppb |
| 2018-08-08 | Q3JAMESTOWN 18 B | 6.30 ppb |
| 2018-11-14 | Q4JAMESTOWN 18 B | 6.70 ppb |
| 2018-11-14 | Q4JAMESTOWN 18 A | 11.0 ppb |
| 2018-11-14 | Q4JAMESTOWN 18 B | 6.30 ppb |
| 2018-11-14 | Q4JAMESTOWN 18 W | 1.40 ppb |
| 2019-02-13 | Q1JAMESTOWN 19 W | 1.30 ppb |
| 2019-02-13 | Q1JAMESTOWN 19 B | 3.50 ppb |
| 2019-02-13 | Q1JAMESTOWN 19 A | 7.70 ppb |
| 2019-02-13 | Q1JAMESTOWN 19 B | 2.20 ppb |
| 2019-05-01 | Q2JAMESTOWN 19 W | 1.50 ppb |
| 2019-05-01 | Q2JAMESTOWN 19 B | 4.60 ppb |
| 2019-05-01 | Q2JAMESTOWN 19 A | 6.10 ppb |
| 2019-05-01 | Q2JAMESTOWN 19 B | 6.10 ppb |
| 2019-08-07 | Q3 JAMESTOWN 19 | 1.000 ppb |
| 2019-08-07 | Q3JAMESTOWN 19 B | 8.70 ppb |
| 2019-08-07 | Q3JAMESTOWN 19 B | 6.10 ppb |
| 2019-08-14 | Q3JAMESTOWN 19 A | 5.20 ppb |
| 2019-11-13 | Q4 JAMESTOWN 19 | 5.40 ppb |
| 2019-11-13 | Q4JAMESTOWN 19 A | 9.10 ppb |
| 2019-11-13 | Q4JAMESTOWN 19 B | 1.20 ppb |
| 2019-11-13 | Q4JAMESTOWN 19 B | 4.60 ppb |