Dibromochloromethane
Avon Water Company
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 0.879 ppb | 48 | 19 | ND - 6.00 ppb |
2015 | 0.737 ppb | 48 | 18 | ND - 5.20 ppb |
2016 | 1.16 ppb | 48 | 20 | ND - 5.80 ppb |
2017 | 1.13 ppb | 48 | 16 | ND - 7.90 ppb |
2018 | 1.84 ppb | 26 | 16 | ND - 5.80 ppb |
2019 | 2.11 ppb | 24 | 15 | ND - 7.20 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 |
---|---|---|
2014-01-16 | E401A25-1TTHM | 1.90 ppb |
2014-01-16 | E401A25-2TTHM | 1.70 ppb |
2014-01-16 | E401A25-3TTHM | 1.60 ppb |
2014-01-16 | E401A25-4TTHM | 3.20 ppb |
2014-01-16 | E402153-8VOC | ND |
2014-02-04 | E402153-1VOC | ND |
2014-02-04 | E402153-2VOC | ND |
2014-02-04 | E402153-3VOC | ND |
2014-02-04 | E402153-4VOC | 1.90 ppb |
2014-02-04 | E402153-5VOC | ND |
2014-02-04 | E402153-6VOC | ND |
2014-02-04 | E402153-7VOC | ND |
2014-04-15 | E404E43-1TTHM | 2.10 ppb |
2014-04-15 | E404E43-2TTHM | 2.20 ppb |
2014-04-15 | E404E43-3TTHM | 2.00 ppb |
2014-04-15 | E404E43-4TTHM | 1.30 ppb |
2014-05-14 | E405C29-1VOC | ND |
2014-05-14 | E405C29-2VOC | ND |
2014-05-14 | E405C29-3VOC | ND |
2014-05-14 | E405C29-4VOC | ND |
2014-05-14 | E405C29-5VOC | 1.20 ppb |
2014-05-14 | E405C29-6VOC | ND |
2014-05-14 | E405C29-7VOC | ND |
2014-05-14 | E405C29-8VOC | ND |
2014-07-14 | E407C09-1GE | 2.10 ppb |
2014-07-14 | E407C09-2GE | 2.40 ppb |
2014-07-14 | E407C09-3GE | 6.00 ppb |
2014-07-14 | E407C09-4GE | 1.20 ppb |
2014-08-13 | E408C10-1VOC | ND |
2014-08-13 | E408C10-2VOC | ND |
2014-08-13 | E408C10-3VOC | ND |
2014-08-13 | E408C10-4VOC | ND |
2014-08-13 | E408C10-5VOC | 0.580 ppb |
2014-08-13 | E408C10-6VOC | ND |
2014-08-13 | E408C10-7VOC | ND |
2014-08-13 | E408C10-8VOC | ND |
2014-10-16 | E410F41-1TTHM | 2.50 ppb |
2014-10-16 | E410F41-2TTHM | 2.40 ppb |
2014-10-16 | E410F41-3TTHM | 3.80 ppb |
2014-10-16 | E410F41-4TTHM | 2.10 ppb |
2014-11-21 | E411H72-1VOC | ND |
2014-11-21 | E411H72-2VOC | ND |
2014-11-21 | E411H72-3VOC | ND |
2014-11-21 | E411H72-4VOC | ND |
2014-11-21 | E411H72-6VOC | ND |
2014-11-21 | E411H72-7VOC | ND |
2014-11-21 | E411H72-8VOC | ND |
2014-12-08 | E412718-2VOC | ND |
2015-01-15 | E501A25-2TTHM | 1.30 ppb |
2015-01-15 | E501A25-3TTHM | 1.50 ppb |
2015-01-15 | E501A25-1TTHM | 1.20 ppb |
2015-01-15 | E501A25-4TTHM | 1.20 ppb |
2015-02-18 | E502D21-4VOC | ND |
2015-02-19 | E502D21-2VOC | ND |
2015-02-19 | E502D21-3VOC | ND |
2015-02-19 | E502D21-6VOC | 1.000 ppb |
2015-02-19 | E502D21-7VOC | ND |
2015-02-19 | E502D21-8VOC | ND |
2015-02-19 | E502D21-9VOC | ND |
2015-02-20 | E502D21-1VOC | ND |
2015-04-14 | E504E21-2TTHM | 1.30 ppb |
2015-04-14 | E504E21-4TTHM | 0.830 ppb |
2015-04-14 | E504E21-1TTHM | 1.60 ppb |
2015-04-14 | E504E21-3TTHM | 1.30 ppb |
2015-06-10 | E506B81-1VOC | ND |
2015-06-10 | E506B81-2VOC | ND |
2015-06-10 | E506B81-3VOC | ND |
2015-06-10 | E506B81-4VOC | ND |
2015-06-10 | E506B81-5VOC | ND |
2015-06-10 | E506B81-6VOC | ND |
2015-06-10 | E506B81-7VOC | ND |
2015-06-10 | E506B81-8VOC | ND |
2015-07-15 | E507G94-4TTHM | 0.840 ppb |
2015-07-15 | E507G94-3TTHM | 5.20 ppb |
2015-07-15 | E507G94-1TTHM | 1.70 ppb |
2015-07-15 | E507G94-2TTHM | 2.50 ppb |
2015-08-28 | E508Y67-1VOC | ND |
2015-08-28 | E508Y67-2VOC | ND |
2015-08-28 | E508Y67-3VOC | ND |
2015-08-28 | E508Y67-4VOC | ND |
2015-08-28 | E508Y67-5VOC | ND |
2015-08-28 | E508Y67-6VOC | ND |
2015-08-28 | E508Y67-7VOC | ND |
2015-08-28 | E508Y67-8VOC | ND |
2015-10-15 | E510E91-2TTHM | 4.90 ppb |
2015-10-15 | E510E91-4TTHM | 0.720 ppb |
2015-10-15 | E510E91-3TTHM | 3.10 ppb |
2015-10-15 | E510E91-1TTHM | 3.70 ppb |
2015-11-24 | E511O25-1VOC | ND |
2015-11-24 | E511O25-2VOC | ND |
2015-11-24 | E511O25-3VOC | ND |
2015-11-24 | E511O25-4VOC | ND |
2015-11-24 | E511O25-5VOC | 1.50 ppb |
2015-11-24 | E511O25-6VOC | ND |
2015-11-24 | E511O25-7VOC | ND |
2015-11-24 | E511O25-8VOC | ND |
2016-01-15 | E601D17-1TTHM | 2.90 ppb |
2016-01-15 | E601D17-2TTHM | 2.40 ppb |
2016-01-15 | E601D17-3TTHM | 3.20 ppb |
2016-01-15 | E601D17-4TTHM | 1.000 ppb |
2016-02-18 | E602H93-1VOC | ND |
2016-02-18 | E602H93-2VOC | ND |
2016-02-18 | E602H93-3VOC | ND |
2016-02-18 | E602H93-4VOC | ND |
2016-02-18 | E602H93-5VOC | 1.70 ppb |
2016-02-18 | E602H93-6VOC | ND |
2016-02-18 | E602H93-7VOC | ND |
2016-02-18 | E602H93-8VOC | ND |
2016-04-19 | E605079-1TTHM | 3.00 ppb |
2016-04-19 | E605079-2TTHM | 2.80 ppb |
2016-04-19 | E605079-3TTHM | 4.10 ppb |
2016-04-19 | E605079-4TTHM | 2.10 ppb |
2016-05-19 | E605N95-1VOC | ND |
2016-05-19 | E605N95-2VOC | ND |
2016-05-19 | E605N95-3VOC | ND |
2016-05-19 | E605N95-4VOC | ND |
2016-05-19 | E605N95-5VOC | 2.10 ppb |
2016-05-19 | E605N95-6VOC | ND |
2016-05-19 | E605N95-7VOC | ND |
2016-05-19 | E605N95-8VOC | ND |
2016-07-13 | E607C00-1TTHM | 3.30 ppb |
2016-07-13 | E607C00-2TTHM | 2.70 ppb |
2016-07-13 | E607C00-3TTHM | 5.20 ppb |
2016-07-13 | E607C00-4TTHM | 0.830 ppb |
2016-08-05 | E608889-1VOC | ND |
2016-08-05 | E608889-2VOC | ND |
2016-08-05 | E608889-3VOC | ND |
2016-08-05 | E608889-4VOC | ND |
2016-08-05 | E608889-5VOC | ND |
2016-08-05 | E608889-6VOC | ND |
2016-08-05 | E608889-7VOC | ND |
2016-08-05 | E608889-8VOC | ND |
2016-10-14 | E610G73-1TTHM | 3.50 ppb |
2016-10-14 | E610G73-2TTHM | 4.30 ppb |
2016-10-14 | E610G73-3TTHM | 5.80 ppb |
2016-10-14 | E610G73-4TTHM | 2.20 ppb |
2016-11-21 | E611M57-1VOC | ND |
2016-11-21 | E611M57-2VOC | ND |
2016-11-21 | E611M57-3VOC | ND |
2016-11-21 | E611M57-4VOC | 0.650 ppb |
2016-11-21 | E611M57-5VOC | 2.00 ppb |
2016-11-21 | E611M57-6VOC | ND |
2016-11-21 | E611M57-7VOC | ND |
2016-11-21 | E611M57-8VOC | ND |
2017-01-13 | E701C67-1TTHM | 3.60 ppb |
2017-01-13 | E701C67-2TTHM | 2.30 ppb |
2017-01-13 | E701C67-3TTHM | 2.10 ppb |
2017-01-13 | E701C67-4TTHM | 1.90 ppb |
2017-02-24 | E702M07-1VOC | ND |
2017-02-24 | E702M07-2VOC | ND |
2017-02-24 | E702M07-3VOC | ND |
2017-02-24 | E702M07-4VOC | ND |
2017-02-24 | E702M07-5VOC | ND |
2017-02-24 | E702M07-6VOC | ND |
2017-02-24 | E702M07-7VOC | ND |
2017-02-24 | E702M07-8VOC | ND |
2017-04-13 | D7D1107-01VOC | 2.90 ppb |
2017-04-13 | D7D1107-02VOC | 4.00 ppb |
2017-04-13 | D7D1107-03VOC | 3.10 ppb |
2017-04-13 | D7D1107-04VOC | 2.30 ppb |
2017-06-01 | D7F0171-01VOC | ND |
2017-06-01 | D7F0171-02VOC | ND |
2017-06-01 | D7F0171-03VOC | ND |
2017-06-01 | D7F0171-04VOC | ND |
2017-06-01 | D7F0171-05VOC | ND |
2017-06-01 | D7F0171-06VOC | ND |
2017-06-01 | D7F0171-07VOC | ND |
2017-06-01 | D7F0171-08VOC | ND |
2017-07-14 | D7G1331-01VOC | 4.20 ppb |
2017-07-14 | D7G1331-02VOC | 7.90 ppb |
2017-07-14 | D7G1331-03VOC | 5.20 ppb |
2017-07-14 | D7G1331-04VOC | 1.50 ppb |
2017-08-29 | D7H3264-01VOC | ND |
2017-08-29 | D7H3264-02VOC | ND |
2017-08-29 | D7H3264-03VOC | ND |
2017-08-29 | D7H3264-04VOC | ND |
2017-08-29 | D7H3264-05VOC | ND |
2017-08-29 | D7H3264-06VOC | ND |
2017-08-29 | D7H3264-07VOC | ND |
2017-08-29 | D7H3264-08VOC | ND |
2017-10-13 | D7J1362-01VOC | 4.80 ppb |
2017-10-13 | D7J1362-02VOC | 3.20 ppb |
2017-10-13 | D7J1362-03VOC | 3.50 ppb |
2017-10-13 | D7J1362-04VOC | 1.70 ppb |
2017-11-28 | D7K2247-02VOC | ND |
2017-11-28 | D7K2247-03VOC | ND |
2017-11-28 | D7K2247-04VOC | ND |
2017-11-28 | D7K2247-05VOC | ND |
2017-11-28 | D7K2247-06VOC | ND |
2017-11-28 | D7K2247-07VOC | ND |
2017-11-28 | D7K2247-08VOC | ND |
2017-11-28 | D7K2247-01VOCR | ND |
2018-01-24 | D8A1669-01VOC | 2.50 ppb |
2018-01-24 | D8A1669-02VOC | 2.30 ppb |
2018-01-24 | D8A1669-03VOC | 3.00 ppb |
2018-01-24 | D8A1669-04VOC | 1.50 ppb |
2018-03-05 | D8C0238-02VOC | ND |
2018-03-05 | D8C0238-03VOC | ND |
2018-03-05 | D8C0238-04VOC | ND |
2018-03-05 | D8C0238-05VOC | ND |
2018-03-05 | D8C0238-06VOC | ND |
2018-03-05 | D8C0238-07VOC | ND |
2018-03-05 | D8C0238-08VOC | ND |
2018-04-25 | D8D2151-08VOC | 0.800 ppb |
2018-04-25 | D8D2151-09VOC | 5.20 ppb |
2018-04-25 | D8D2151-10VOC | 2.80 ppb |
2018-04-25 | D8D2151-11VOC | 3.90 ppb |
2018-04-25 | D8D2151-07VOC | ND |
2018-07-26 | CA98743 | 0.630 ppb |
2018-07-26 | CA98744 | 4.20 ppb |
2018-07-26 | CA98745 | 1.90 ppb |
2018-07-26 | CA98746 | 4.10 ppb |
2018-07-26 | CA98747 | ND |
2018-10-09 | DBP 200508664 | 2.90 ppb |
2018-10-09 | DBP 200508665 | 2.60 ppb |
2018-10-09 | DBP 200508676 | 3.80 ppb |
2018-10-09 | DBP 200508678 | 5.80 ppb |
2018-10-09 | VOC1 200508699 | ND |
2019-01-08 | DBP 200518131 | 1.80 ppb |
2019-01-08 | DBP 200518132 | ND |
2019-01-08 | DBP 200518133 | 1.70 ppb |
2019-01-08 | DBP 200518135 | 1.60 ppb |
2019-01-29 | VOC1 200519992 | ND |
2019-01-29 | VOC1 200519993 | ND |
2019-01-29 | VOC1 200519991 | ND |
2019-01-29 | VOC1 200519996 | ND |
2019-01-29 | VOC1 200519994 | ND |
2019-01-29 | VOC1 200519995 | ND |
2019-04-11 | DBP 200528267 | 2.30 ppb |
2019-04-11 | DBP 200528268 | 5.10 ppb |
2019-04-11 | DBP 200528269 | 3.20 ppb |
2019-04-11 | DBP 200528270 | 3.10 ppb |
2019-04-16 | VOC1 200528742 | ND |
2019-07-02 | DBP 200538992 | 1.20 ppb |
2019-07-02 | DBP 200538993 | 6.10 ppb |
2019-07-02 | DBP 200538995 | 3.90 ppb |
2019-07-02 | DBP 200538996 | 4.70 ppb |
2019-08-13 | VOC1 200544842 | ND |
2019-10-03 | DBP 200551429 | 1.10 ppb |
2019-10-03 | DBP 200551430 | 7.20 ppb |
2019-10-03 | DBP 200551431 | 3.10 ppb |
2019-10-03 | DBP 200551432 | 4.50 ppb |