Bromodichloromethane
Bristol Water Department
Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
216
Samples
0
Samples exceeding legal limit (MCL)
209
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 6.30 ppb | 36 | 36 | 0.660 ppb - 11.0 ppb |
| 2015 | 6.63 ppb | 36 | 34 | ND - 10.00 ppb |
| 2016 | 6.64 ppb | 36 | 33 | ND - 10.00 ppb |
| 2017 | 6.66 ppb | 36 | 35 | ND - 10.7 ppb |
| 2018 | 6.23 ppb | 36 | 35 | ND - 9.20 ppb |
| 2019 | 5.96 ppb | 36 | 36 | 0.760 ppb - 9.85 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.06 ppb
The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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 |
|---|---|---|
| 2014-01-10 | E401597-1VOC | 3.10 ppb |
| 2014-01-10 | E401597-2VOC | 0.660 ppb |
| 2014-01-10 | E401597-3VOC | 0.910 ppb |
| 2014-01-10 | E401597-4VOC | 2.70 ppb |
| 2014-02-06 | E402330-1TTHM | 4.50 ppb |
| 2014-02-06 | E402330-2TTHM | 5.50 ppb |
| 2014-02-06 | E402330-3TTHM | 6.90 ppb |
| 2014-02-06 | E402330-4TTHM | 6.90 ppb |
| 2014-02-06 | E402330-5TTHM | 7.40 ppb |
| 2014-02-06 | E402330-6TTHM | 6.40 ppb |
| 2014-02-06 | E402330-7TTHM | 4.60 ppb |
| 2014-02-06 | E402330-8TTHM | 4.80 ppb |
| 2014-05-01 | E405079-1TTHM | 5.00 ppb |
| 2014-05-01 | E405079-2TTHM | 5.30 ppb |
| 2014-05-01 | E405079-3TTHM | 6.10 ppb |
| 2014-05-01 | E405079-4TTHM | 5.30 ppb |
| 2014-05-01 | E405079-5TTHM | 5.10 ppb |
| 2014-05-01 | E405079-6TTHM | 5.90 ppb |
| 2014-05-01 | E405079-7TTHM | 4.50 ppb |
| 2014-05-01 | E405079-8TTHM | 5.30 ppb |
| 2014-08-01 | E408040-1TTHM | 9.40 ppb |
| 2014-08-01 | E408040-2TTHM | 9.20 ppb |
| 2014-08-01 | E408040-3TTHM | 10.00 ppb |
| 2014-08-01 | E408040-4TTHM | 8.10 ppb |
| 2014-08-01 | E408040-5TTHM | 9.60 ppb |
| 2014-08-01 | E408040-6TTHM | 11.0 ppb |
| 2014-08-01 | E408040-7TTHM | 7.80 ppb |
| 2014-08-01 | E408040-8TTHM | 10.00 ppb |
| 2014-11-05 | E411346-1TTHM | 6.40 ppb |
| 2014-11-05 | E411346-2TTHM | 6.70 ppb |
| 2014-11-05 | E411346-3TTHM | 7.10 ppb |
| 2014-11-05 | E411346-4TTHM | 7.10 ppb |
| 2014-11-05 | E411346-5TTHM | 6.30 ppb |
| 2014-11-05 | E411346-6TTHM | 7.80 ppb |
| 2014-11-05 | E411346-7TTHM | 6.20 ppb |
| 2014-11-05 | E411346-8TTHM | 7.40 ppb |
| 2015-02-05 | E502324-8TTHM | 5.00 ppb |
| 2015-02-05 | E502324-6TTHM | 8.20 ppb |
| 2015-02-05 | E502324-4TTHM | 6.50 ppb |
| 2015-02-05 | E502324-3TTHM | 7.30 ppb |
| 2015-02-05 | E502324-1TTHM | 4.60 ppb |
| 2015-02-05 | E502324-2TTHM | 6.50 ppb |
| 2015-02-05 | E502324-5TTHM | 6.60 ppb |
| 2015-02-05 | E502324-7TTHM | 4.40 ppb |
| 2015-03-09 | E503529-1VOC | 2.30 ppb |
| 2015-03-09 | E503529-4VOC | 2.00 ppb |
| 2015-03-09 | E503529-3VOC | ND |
| 2015-03-09 | E503529-2VOC | ND |
| 2015-05-08 | E505760-3TTHM | 6.20 ppb |
| 2015-05-08 | E505760-4TTHM | 5.10 ppb |
| 2015-05-08 | E505760-7TTHM | 4.80 ppb |
| 2015-05-08 | E505760-6TTHM | 6.00 ppb |
| 2015-05-08 | E505760-2TTHM | 5.70 ppb |
| 2015-05-08 | E505760-8TTHM | 5.80 ppb |
| 2015-05-08 | E505760-1TTHM | 5.40 ppb |
| 2015-05-08 | E505760-5TTHM | 6.10 ppb |
| 2015-08-06 | E508781-3TTHM | 9.00 ppb |
| 2015-08-06 | E508781-1TTHM | 8.50 ppb |
| 2015-08-06 | E508781-6TTHM | 10.00 ppb |
| 2015-08-06 | E508781-4TTHM | 7.70 ppb |
| 2015-08-06 | E508781-2TTHM | 8.80 ppb |
| 2015-08-06 | E508781-7TTHM | 6.60 ppb |
| 2015-08-06 | E508781-8TTHM | 9.00 ppb |
| 2015-08-06 | E508781-5TTHM | 7.70 ppb |
| 2015-11-05 | E511647-3TTHM | 10.00 ppb |
| 2015-11-05 | E511647-2TTHM | 8.90 ppb |
| 2015-11-05 | E511647-7TTHM | 8.20 ppb |
| 2015-11-05 | E511647-4TTHM | 9.20 ppb |
| 2015-11-05 | E511647-6TTHM | 10.00 ppb |
| 2015-11-05 | E511647-8TTHM | 9.40 ppb |
| 2015-11-05 | E511647-5TTHM | 8.10 ppb |
| 2015-11-05 | E511647-1TTHM | 8.90 ppb |
| 2016-02-11 | E602C26-1TTHM | 4.80 ppb |
| 2016-02-11 | E602C26-2TTHM | 6.40 ppb |
| 2016-02-11 | E602C26-3TTHM | 6.20 ppb |
| 2016-02-11 | E602C26-4TTHM | 6.30 ppb |
| 2016-02-11 | E602C26-5TTHM | 7.00 ppb |
| 2016-02-11 | E602C26-6TTHM | 5.10 ppb |
| 2016-02-11 | E602C26-7TTHM | 5.40 ppb |
| 2016-02-11 | E602C26-8TTHM | 4.90 ppb |
| 2016-03-11 | E603B92-1VOC | 5.50 ppb |
| 2016-03-11 | E603B92-4VOC | 3.90 ppb |
| 2016-03-11 | E603B92-3VOC | ND |
| 2016-03-11 | E603B92-2VOC | ND |
| 2016-05-12 | E605F87-1TTHM | 6.60 ppb |
| 2016-05-12 | E605F87-2TTHM | 8.00 ppb |
| 2016-05-12 | E605F87-3TTHM | 7.90 ppb |
| 2016-05-12 | E605F87-4TTHM | 7.80 ppb |
| 2016-05-12 | E605F87-5TTHM | 9.00 ppb |
| 2016-05-12 | E605F87-6TTHM | 7.80 ppb |
| 2016-05-12 | E605F87-7TTHM | 6.40 ppb |
| 2016-05-12 | E605F87-8TTHM | 5.90 ppb |
| 2016-08-04 | E608718-1TTHM | 9.80 ppb |
| 2016-08-04 | E608718-2TTHM | 10.00 ppb |
| 2016-08-04 | E608718-3TTHM | 10.00 ppb |
| 2016-08-04 | E608718-4TTHM | 9.60 ppb |
| 2016-08-04 | E608718-5TTHM | 9.90 ppb |
| 2016-08-04 | E608718-6TTHM | 9.00 ppb |
| 2016-08-04 | E608718-7TTHM | 8.10 ppb |
| 2016-08-04 | E608718-8TTHM | 7.50 ppb |
| 2016-11-03 | E611421-1TTHM | 7.10 ppb |
| 2016-11-03 | E611421-2TTHM | 9.20 ppb |
| 2016-11-03 | E611421-3TTHM | 8.20 ppb |
| 2016-11-03 | E611421-4TTHM | ND |
| 2016-11-03 | E611421-5TTHM | 6.60 ppb |
| 2016-11-03 | E611421-6TTHM | 6.80 ppb |
| 2016-11-03 | E611421-7TTHM | 7.10 ppb |
| 2016-11-03 | E611421-8TTHM | 5.10 ppb |
| 2017-02-06 | E702378-1TTHM | 6.80 ppb |
| 2017-02-06 | E702378-2TTHM | 7.50 ppb |
| 2017-02-06 | E702378-3TTHM | 7.50 ppb |
| 2017-02-06 | E702378-4TTHM | 6.30 ppb |
| 2017-02-06 | E702378-5TTHM | 9.20 ppb |
| 2017-02-06 | E702378-6TTHM | 5.10 ppb |
| 2017-02-06 | E702378-7TTHM | 7.10 ppb |
| 2017-02-06 | E702378-8TTHM | 4.70 ppb |
| 2017-05-04 | D7E0517-01VOC | 4.80 ppb |
| 2017-05-04 | D7E0517-02VOC | 5.50 ppb |
| 2017-05-04 | D7E0517-03VOC | 6.70 ppb |
| 2017-05-04 | D7E0517-04VOC | 6.60 ppb |
| 2017-05-04 | D7E0517-05VOC | 7.90 ppb |
| 2017-05-04 | D7E0517-06VOC | 4.90 ppb |
| 2017-05-04 | D7E0517-07VOC | 4.90 ppb |
| 2017-05-04 | D7E0517-08VOC | 5.40 ppb |
| 2017-05-04 | D7E0514-01VOC | 5.40 ppb |
| 2017-05-04 | D7E0514-04VOC | 4.00 ppb |
| 2017-05-04 | D7E0514-03VOC | 0.500 ppb |
| 2017-05-04 | D7E0514-02VOC | ND |
| 2017-08-04 | D7H0571-01VOC | 8.30 ppb |
| 2017-08-04 | D7H0571-02VOC | 8.40 ppb |
| 2017-08-04 | D7H0571-03VOC | 8.30 ppb |
| 2017-08-04 | D7H0571-04VOC | 8.20 ppb |
| 2017-08-04 | D7H0571-05VOC | 7.70 ppb |
| 2017-08-04 | D7H0571-06VOC | 6.80 ppb |
| 2017-08-04 | D7H0571-07VOC | 8.20 ppb |
| 2017-08-04 | D7H0571-08VOC | 8.10 ppb |
| 2017-11-01 | D7K0019-01VOC | 7.90 ppb |
| 2017-11-01 | D7K0019-02VOC | 7.70 ppb |
| 2017-11-01 | D7K0019-03VOC | 9.00 ppb |
| 2017-11-01 | D7K0019-04VOC | 8.30 ppb |
| 2017-11-01 | D7K0019-05VOC | 7.40 ppb |
| 2017-11-01 | D7K0019-06VOC | 7.10 ppb |
| 2017-11-01 | D7K0019-07VOC | 6.80 ppb |
| 2017-11-01 | D7K0019-08VOC | 10.7 ppb |
| 2018-01-10 | D8A0568-01VOC | 3.70 ppb |
| 2018-01-10 | D8A0568-04VOC | 3.20 ppb |
| 2018-01-10 | D8A0568-03VOC | ND |
| 2018-01-10 | D8A0568-02VOC | 0.700 ppb |
| 2018-02-01 | D8B0050-01VOC | 5.40 ppb |
| 2018-02-01 | D8B0050-02VOC | 5.70 ppb |
| 2018-02-01 | D8B0050-03VOC | 7.30 ppb |
| 2018-02-01 | D8B0050-04VOC | 7.10 ppb |
| 2018-02-01 | D8B0050-05VOC | 9.00 ppb |
| 2018-02-01 | D8B0050-06VOC | 5.30 ppb |
| 2018-02-01 | D8B0050-07VOC | 5.70 ppb |
| 2018-02-01 | D8B0050-08VOC | 5.80 ppb |
| 2018-05-02 | D8E0293-01VOC | 4.90 ppb |
| 2018-05-02 | D8E0293-02VOC | 5.00 ppb |
| 2018-05-02 | D8E0293-03VOC | 7.00 ppb |
| 2018-05-02 | D8E0293-04VOC | 7.40 ppb |
| 2018-05-02 | D8E0293-05VOC | 8.40 ppb |
| 2018-05-02 | D8E0293-06VOC | 5.00 ppb |
| 2018-05-02 | D8E0293-07VOC | 5.30 ppb |
| 2018-05-02 | D8E0293-08VOC | 5.40 ppb |
| 2018-08-03 | D8H0465-01VOC | 8.10 ppb |
| 2018-08-03 | D8H0465-02VOC | 8.10 ppb |
| 2018-08-03 | D8H0465-03VOC | 9.20 ppb |
| 2018-08-03 | D8H0465-04VOC | 8.80 ppb |
| 2018-08-03 | D8H0465-05VOC | 8.70 ppb |
| 2018-08-03 | D8H0465-06VOC | 7.40 ppb |
| 2018-08-03 | D8H0465-07VOC | 7.10 ppb |
| 2018-08-03 | D8H0465-08VOC | 8.00 ppb |
| 2018-11-21 | D8K2218-01VOC | 6.40 ppb |
| 2018-11-21 | D8K2218-02VOC | 6.90 ppb |
| 2018-11-21 | D8K2218-03VOC | 7.20 ppb |
| 2018-11-21 | D8K2218-04VOC | 7.00 ppb |
| 2018-11-21 | D8K2218-05VOC | 6.10 ppb |
| 2018-11-21 | D8K2218-06VOC | 6.00 ppb |
| 2018-11-21 | D8K2218-07VOC | 5.60 ppb |
| 2018-11-21 | D8K2218-08VOC | 6.30 ppb |
| 2019-02-07 | D9B0625-01VOC | 4.92 ppb |
| 2019-02-07 | D9B0625-02VOC | 5.29 ppb |
| 2019-02-07 | D9B0625-03VOC | 6.09 ppb |
| 2019-02-07 | D9B0625-04VOC | 5.77 ppb |
| 2019-02-07 | D9B0625-05VOC | 8.79 ppb |
| 2019-02-07 | D9B0625-06VOC | 4.05 ppb |
| 2019-02-07 | D9B0625-07VOC | 4.56 ppb |
| 2019-02-07 | D9B0625-08VOC | 4.97 ppb |
| 2019-05-16 | D9E1857-01VOC | 5.72 ppb |
| 2019-05-16 | D9E1857-02VOC | 4.91 ppb |
| 2019-05-16 | D9E1857-03VOC | 4.76 ppb |
| 2019-05-16 | D9E1857-04VOC | 5.71 ppb |
| 2019-05-16 | D9E1857-05VOC | 6.62 ppb |
| 2019-05-16 | D9E1857-06VOC | 4.36 ppb |
| 2019-05-16 | D9E1857-07VOC | 4.73 ppb |
| 2019-05-16 | D9E1857-08VOC | 5.49 ppb |
| 2019-08-22 | D9H2728-01VOC | 9.39 ppb |
| 2019-08-22 | D9H2728-02VOC | 8.68 ppb |
| 2019-08-22 | D9H2728-03VOC | 9.73 ppb |
| 2019-08-22 | D9H2728-04VOC | 9.32 ppb |
| 2019-08-22 | D9H2728-05VOC | 8.58 ppb |
| 2019-08-22 | D9H2728-06VOC | 7.44 ppb |
| 2019-08-22 | D9H2728-07VOC | 9.85 ppb |
| 2019-08-22 | D9H2728-08VOC | 8.23 ppb |
| 2019-10-28 | D9J2584-01VOC | 4.64 ppb |
| 2019-10-28 | D9J2584-04VOC | 4.71 ppb |
| 2019-10-28 | D9J2584-03VOC | 0.760 ppb |
| 2019-10-28 | D9J2584-02VOC | 1.96 ppb |
| 2019-11-20 | D9K1863-01VOC | 6.07 ppb |
| 2019-11-20 | D9K1863-02VOC | 6.15 ppb |
| 2019-11-20 | D9K1863-03VOC | 5.55 ppb |
| 2019-11-20 | D9K1863-04VOC | 5.75 ppb |
| 2019-11-20 | D9K1863-05VOC | 4.93 ppb |
| 2019-11-20 | D9K1863-06VOC | 4.69 ppb |
| 2019-11-20 | D9K1863-07VOC | 4.78 ppb |
| 2019-11-20 | D9K1863-08VOC | 6.77 ppb |