Bromodichloromethane
Kent County Water Authority
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 3.18 ppb | 47 | 39 | ND - 7.87 ppb |
2015 | 3.51 ppb | 37 | 31 | ND - 8.60 ppb |
2016 | 4.33 ppb | 36 | 32 | ND - 7.60 ppb |
2017 | 3.96 ppb | 43 | 38 | ND - 7.60 ppb |
2018 | 3.08 ppb | 36 | 32 | ND - 9.10 ppb |
2019 | 3.50 ppb | 36 | 32 | ND - 9.90 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 |
---|---|---|
2014-02-19 | 1401517-01_TO02 | 7.83 ppb |
2014-02-19 | 1401517-02_TO02 | 4.54 ppb |
2014-02-19 | 1401517-03_TO02 | 7.87 ppb |
2014-02-19 | 1401517-04_TO02 | 7.22 ppb |
2014-02-19 | 1401517-05_TO02 | 7.77 ppb |
2014-02-19 | 1401517-06_TO02 | 5.26 ppb |
2014-02-19 | 1401517-07_TO02 | 5.77 ppb |
2014-02-19 | 1401517-08_TO02 | 3.12 ppb |
2014-03-17 | 1401808-05_TO12 | ND |
2014-03-17 | 1401808-02_TO12 | ND |
2014-03-17 | 1401808-03_TO12 | ND |
2014-03-17 | 1401808-04_TO12 | ND |
2014-04-14 | 1402258-01_TO02 | 0.870 ppb |
2014-04-15 | 1402286-01_TO02 | 1.20 ppb |
2014-04-15 | 1402286-02_TO02 | 4.35 ppb |
2014-04-16 | 1402316-01_TO02 | 1.06 ppb |
2014-04-17 | 1402339-01_TO02 | 0.980 ppb |
2014-04-17 | 1402339-02_TO02 | 4.58 ppb |
2014-04-18 | 1402359-01_TO02 | 1.15 ppb |
2014-04-21 | 1402378-04_TO12 | ND |
2014-04-21 | 1402378-03_TO12 | ND |
2014-04-21 | 1402378-02_TO12 | ND |
2014-05-14 | 1402678-01_TO02 | 4.06 ppb |
2014-05-14 | 1402678-02_TO02 | 4.31 ppb |
2014-05-14 | 1402678-04_TO02 | 3.55 ppb |
2014-05-14 | 1402678-03_TO02 | 3.57 ppb |
2014-05-15 | 1402693-01_TO02 | 2.47 ppb |
2014-05-15 | 1402693-02_TO02 | 3.30 ppb |
2014-05-15 | 1402693-03_TO02 | 1.88 ppb |
2014-05-15 | 1402693-04_TO02 | 1.77 ppb |
2014-08-13 | 1404415-04_TO12 | ND |
2014-08-14 | 1408-18110-001 | 3.50 ppb |
2014-08-14 | 1408-18110-002 | 3.00 ppb |
2014-08-14 | 1408-18110-003 | 3.30 ppb |
2014-08-14 | 1408-18110-004 | 2.90 ppb |
2014-08-14 | 1408-18110-005 | 2.60 ppb |
2014-08-14 | 1408-18110-006 | 2.70 ppb |
2014-08-14 | 1408-18110-007 | 2.20 ppb |
2014-08-14 | 1408-18110-008 | 2.50 ppb |
2014-11-18 | 1411-25894-001 | 4.90 ppb |
2014-11-18 | 1411-25894-002 | 4.70 ppb |
2014-11-18 | 1411-25894-003 | 5.70 ppb |
2014-11-18 | 1411-25894-004 | 5.20 ppb |
2014-11-18 | 1411-25894-005 | 5.70 ppb |
2014-11-18 | 1411-25894-006 | 4.30 ppb |
2014-11-18 | 1411-25894-007 | 4.30 ppb |
2014-11-18 | 1411-25894-008 | 3.60 ppb |
2015-02-18 | 1502-03356-001T | 5.30 ppb |
2015-02-18 | 1502-03356-002T | 4.30 ppb |
2015-02-18 | 1502-03356-003T | 4.00 ppb |
2015-02-18 | 1502-03356-004T | 4.10 ppb |
2015-02-18 | 1502-03356-005T | 5.00 ppb |
2015-02-18 | 1502-03356-006T | 3.80 ppb |
2015-02-18 | 1502-03356-007T | 4.90 ppb |
2015-02-18 | 1502-03356-008T | 2.80 ppb |
2015-03-10 | 1501510-01_TO12 | ND |
2015-03-10 | 1501510-02_TO12 | ND |
2015-04-29 | 1502029-02_TO12 | ND |
2015-04-29 | 1502029-03_TO12 | ND |
2015-05-13 | 1505-08683-004 | 3.10 ppb |
2015-05-13 | 1505-09683-001 | 3.00 ppb |
2015-05-13 | 1505-09683-002 | 3.10 ppb |
2015-05-13 | 1505-09683-003 | 3.50 ppb |
2015-05-13 | 1505-09683-005 | 4.00 ppb |
2015-05-13 | 1505-09683-006 | 2.10 ppb |
2015-05-13 | 1505-09683-007 | 1.50 ppb |
2015-05-13 | 1505-09683-008 | 1.90 ppb |
2015-08-19 | 1508-17646-001 | 3.80 ppb |
2015-08-19 | 1508-17646-002 | 3.40 ppb |
2015-08-19 | 1508-17646-003 | 4.60 ppb |
2015-08-19 | 1508-17646-004 | 3.50 ppb |
2015-08-19 | 1508-17646-005 | 4.40 ppb |
2015-08-19 | 1508-17646-006 | 3.20 ppb |
2015-08-19 | 1508-17646-007 | 2.60 ppb |
2015-08-19 | 1508-17646-008 | 2.80 ppb |
2015-09-14 | 1504119-04_TO12 | ND |
2015-11-17 | 1511-24948-001 | 6.20 ppb |
2015-11-17 | 1511-24948-002 | 5.80 ppb |
2015-11-17 | 1511-24948-003 | 6.30 ppb |
2015-11-17 | 1511-24948-004 | 6.40 ppb |
2015-11-17 | 1511-24948-005 | 8.60 ppb |
2015-11-17 | 1511-24948-006 | 6.60 ppb |
2015-11-17 | 1511-24948-007 | 5.20 ppb |
2015-11-17 | 1511-24948-008 | ND |
2016-02-17 | 1602-03675-001 | 7.10 ppb |
2016-02-17 | 1602-03675-002 | 6.00 ppb |
2016-02-17 | 1602-03675-003 | 3.60 ppb |
2016-02-17 | 1602-03675-004 | 5.60 ppb |
2016-02-17 | 1602-03675-005 | 6.60 ppb |
2016-02-17 | 1602-03675-006 | 6.40 ppb |
2016-02-17 | 1602-03675-007 | 4.90 ppb |
2016-02-17 | 1602-03675-008 | 5.40 ppb |
2016-03-23 | 1601576-01_TO12 | ND |
2016-04-19 | 1601908-01_TO12 | ND |
2016-04-19 | 1601908-03_TO12 | ND |
2016-05-18 | 1605-11327-001 | 4.90 ppb |
2016-05-18 | 1605-11327-002 | 4.50 ppb |
2016-05-18 | 1605-11327-003 | 5.10 ppb |
2016-05-18 | 1605-11327-004 | 4.70 ppb |
2016-05-18 | 1605-11327-005 | 5.80 ppb |
2016-05-18 | 1605-11327-006 | 4.90 ppb |
2016-05-18 | 1605-11327-007 | 4.60 ppb |
2016-05-18 | 1605-11327-008 | 4.70 ppb |
2016-07-12 | 1603230-02_TO12 | ND |
2016-08-17 | 1608-19347-001 | 3.80 ppb |
2016-08-17 | 1608-19347-002 | 3.70 ppb |
2016-08-17 | 1608-19347-003 | 4.70 ppb |
2016-08-17 | 1608-19347-004 | 1.90 ppb |
2016-08-17 | 1608-19347-005 | 4.30 ppb |
2016-08-17 | 1608-19347-006 | 3.50 ppb |
2016-08-17 | 1609-19347-007 | 1.90 ppb |
2016-08-17 | 1609-19347-008 | 3.10 ppb |
2016-11-16 | 1611480-01 | 7.40 ppb |
2016-11-16 | 1611480-02 | 3.60 ppb |
2016-11-16 | 1611480-03 | 6.30 ppb |
2016-11-16 | 1611480-04 | 4.10 ppb |
2016-11-16 | 1611480-05 | 6.50 ppb |
2016-11-16 | 1611480-06 | 7.60 ppb |
2016-11-16 | 1611480-07 | 4.90 ppb |
2016-11-16 | 1611480-08 | 3.60 ppb |
2017-02-15 | 1702292-01 | 7.30 ppb |
2017-02-15 | 1702292-02 | 4.10 ppb |
2017-02-15 | 1702292-03 | 7.60 ppb |
2017-02-15 | 1702292-04 | 3.80 ppb |
2017-02-15 | 1702292-05 | 7.40 ppb |
2017-02-15 | 1702292-06 | 4.70 ppb |
2017-02-15 | 1702292-07 | 5.60 ppb |
2017-02-15 | 1702292-08 | 3.20 ppb |
2017-03-20 | 1701538-01_TO12 | ND |
2017-04-25 | 1701960-04_TO12 | ND |
2017-04-25 | 1701960-01_TO12 | ND |
2017-05-16 | 1705442-01 | 6.20 ppb |
2017-05-16 | 1705442-02 | 3.80 ppb |
2017-05-16 | 1705442-03 | 7.10 ppb |
2017-05-16 | 1705442-04 | 4.10 ppb |
2017-05-16 | 1705442-05 | 6.60 ppb |
2017-05-16 | 1705442-06 | 5.50 ppb |
2017-05-16 | 1705442-07 | 5.70 ppb |
2017-05-16 | 1705442-08 | 3.40 ppb |
2017-08-16 | 1708376-01 | 4.00 ppb |
2017-08-16 | 1708376-02 | 2.80 ppb |
2017-08-16 | 1708376-03 | 2.80 ppb |
2017-08-16 | 1708376-04 | 2.70 ppb |
2017-08-16 | 1708376-05 | 3.90 ppb |
2017-08-16 | 1708376-06 | 3.30 ppb |
2017-08-16 | 1708376-07 | 2.90 ppb |
2017-08-16 | 1708376-08 | 3.30 ppb |
2017-08-28 | 1708-18567-001_T | 4.30 ppb |
2017-08-28 | 1708-18567-003_T | 4.30 ppb |
2017-08-28 | 1708-18573-001_T | ND |
2017-08-28 | 1708-18567-002_T | 4.20 ppb |
2017-08-29 | 1708-18660-001_T | 4.10 ppb |
2017-08-29 | 1708-18660-003_T | 4.20 ppb |
2017-08-29 | 1708-18660-002_T | 4.10 ppb |
2017-09-05 | 1704240-04_TO12 | ND |
2017-11-21 | 1711626-01A | 4.20 ppb |
2017-11-21 | 1711626-02A | 3.50 ppb |
2017-11-21 | 1711626-03A | 7.20 ppb |
2017-11-21 | 1711626-04A | 4.00 ppb |
2017-11-21 | 1711626-05A | 4.20 ppb |
2017-11-21 | 1711626-06A | 3.70 ppb |
2017-11-21 | 1711626-07A | 4.10 ppb |
2017-11-21 | 1711626-08A | 2.30 ppb |
2018-02-20 | 1802387-01 | 5.60 ppb |
2018-02-20 | 1802387-02 | 2.80 ppb |
2018-02-20 | 1802387-03 | 8.10 ppb |
2018-02-20 | 1802387-04 | 2.60 ppb |
2018-02-20 | 1802387-05 | 5.20 ppb |
2018-02-20 | 1802387-06 | 4.20 ppb |
2018-02-20 | 1802387-07 | 3.80 ppb |
2018-02-20 | 1802387-08 | 1.90 ppb |
2018-03-23 | 1801470-01_TO12 | ND |
2018-03-23 | 1801470-02_TO12 | ND |
2018-04-19 | 1801795-01_TO12 | ND |
2018-05-16 | 1805426-01 | 3.90 ppb |
2018-05-16 | 1805426-02 | 3.00 ppb |
2018-05-16 | 1805426-03 | 5.90 ppb |
2018-05-16 | 1805426-04 | 3.10 ppb |
2018-05-16 | 1805426-05 | 5.00 ppb |
2018-05-16 | 1805426-06 | 4.60 ppb |
2018-05-16 | 1805426-07 | 3.00 ppb |
2018-05-16 | 1805426-08 | 2.30 ppb |
2018-08-15 | 1808405-01 | 2.50 ppb |
2018-08-15 | 1808405-02 | 2.20 ppb |
2018-08-15 | 1808405-03 | 9.10 ppb |
2018-08-15 | 1808405-04 | 1.60 ppb |
2018-08-15 | 1808405-05 | 2.80 ppb |
2018-08-15 | 1808405-06 | 2.10 ppb |
2018-08-15 | 1808405-07 | 1.10 ppb |
2018-08-15 | 1808405-08 | 1.40 ppb |
2018-08-30 | 1803927-02_TO12 | ND |
2018-11-20 | 1811551-01 | 2.80 ppb |
2018-11-20 | 1811551-02 | 2.20 ppb |
2018-11-20 | 1811551-03 | 2.50 ppb |
2018-11-20 | 1811551-04 | 3.00 ppb |
2018-11-20 | 1811551-05 | 1.30 ppb |
2018-11-20 | 1811551-06 | 3.00 ppb |
2018-11-20 | 1811551-07 | 2.70 ppb |
2018-11-20 | 1811551-08 | 5.70 ppb |
2019-02-21 | 1902421-01 | 5.50 ppb |
2019-02-21 | 1902421-02 | 3.30 ppb |
2019-02-21 | 1902421-03 | 9.90 ppb |
2019-02-21 | 1902421-04 | 4.70 ppb |
2019-02-21 | 1902421-05 | 4.20 ppb |
2019-02-21 | 1902421-06 | 2.50 ppb |
2019-02-21 | 1902421-07 | 4.50 ppb |
2019-02-21 | 1902421-08 | 1.60 ppb |
2019-03-28 | 1901506-01_TO12 | ND |
2019-03-28 | 1901506-02_TO12 | ND |
2019-04-24 | 1901794-03_TO12 | ND |
2019-05-15 | 1905513-01 | 3.40 ppb |
2019-05-15 | 1905513-02 | 2.30 ppb |
2019-05-15 | 1905513-03 | 7.30 ppb |
2019-05-15 | 1905513-04 | 1.20 ppb |
2019-05-15 | 1905513-05 | 2.80 ppb |
2019-05-15 | 1905513-06 | 2.50 ppb |
2019-05-15 | 1905513-07 | 2.40 ppb |
2019-05-15 | 1905513-08 | 1.50 ppb |
2019-08-21 | 19H0686-01 | 4.20 ppb |
2019-08-21 | 19H0686-02 | 2.50 ppb |
2019-08-21 | 19H0686-03 | 8.60 ppb |
2019-08-21 | 19H0686-04 | 2.40 ppb |
2019-08-21 | 19H0686-05 | 3.70 ppb |
2019-08-21 | 19H0686-06 | 2.50 ppb |
2019-08-21 | 19H0686-07 | 2.40 ppb |
2019-08-21 | 19H0686-08 | 2.20 ppb |
2019-09-10 | 1904181-01_TO12 | ND |
2019-11-20 | 19K0605-01 | 7.70 ppb |
2019-11-20 | 19K0605-02 | 3.40 ppb |
2019-11-20 | 19K0605-03 | 7.00 ppb |
2019-11-20 | 19K0605-04 | 3.40 ppb |
2019-11-20 | 19K0605-05 | 4.60 ppb |
2019-11-20 | 19K0605-06 | 3.80 ppb |
2019-11-20 | 19K0605-07 | 5.50 ppb |
2019-11-20 | 19K0605-08 | 2.40 ppb |