Dibromoacetic acid
City of Mountain View
Dibromoacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids 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 | 2.97 ppb | 32 | 12 | ND - 13.6 ppb |
2015 | 3.04 ppb | 36 | 15 | ND - 12.8 ppb |
2016 | 3.36 ppb | 32 | 8 | ND - 17.7 ppb |
2017 | 1.37 ppb | 32 | 6 | ND - 13.3 ppb |
2018 | 2.14 ppb | 32 | 12 | ND - 6.80 ppb |
2019 | 1.87 ppb | 32 | 13 | ND - 7.30 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.04 ppb
The EWG Health Guideline of 0.04 ppb for dibromoacetic acid was defined in a peer-reviewed scientific study by EWG and represents a on-in-a-million lifetime cancer risk level. This health guideline protects against cancer.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-01-30 | 1610-900-0945 | ND |
2014-01-30 | 1610-901-1020 | ND |
2014-01-30 | 1610-902-1005 | ND |
2014-01-30 | 1610-903-1040 | ND |
2014-01-30 | 1610-904-1140 | ND |
2014-01-30 | 1610-905-1125 | 2.50 ppb |
2014-01-30 | 1610-906-1055 | 1.90 ppb |
2014-01-30 | 1610-907-1110 | 2.20 ppb |
2014-05-07 | 1610-900-1000 | ND |
2014-05-07 | 1610-901-1015 | ND |
2014-05-07 | 1610-902-0950 | ND |
2014-05-07 | 1610-903-0840 | ND |
2014-05-07 | 1610-904-0930 | ND |
2014-05-07 | 1610-905-0915 | 9.20 ppb |
2014-05-07 | 1610-906-0850 | 11.2 ppb |
2014-05-07 | 1610-907-0900 | 9.10 ppb |
2014-08-06 | 1610-900-0955 | ND |
2014-08-06 | 1610-901-1010 | ND |
2014-08-06 | 1610-902-1020 | ND |
2014-08-06 | 1610-903-1045 | ND |
2014-08-06 | 1610-904-1130 | ND |
2014-08-06 | 1610-905-1120 | 7.20 ppb |
2014-08-06 | 1610-906-1100 | 7.40 ppb |
2014-08-06 | 1610-907-1110 | 8.50 ppb |
2014-11-05 | 1610-900-0920 | ND |
2014-11-05 | 1610-901-0945 | ND |
2014-11-05 | 1610-902-0935 | ND |
2014-11-05 | 1610-903-0830 | ND |
2014-11-05 | 1610-904-0730 | ND |
2014-11-05 | 1610-905-0745 | 10.7 ppb |
2014-11-05 | 1610-906-0800 | 13.6 ppb |
2014-11-05 | 1610-907-0810 | 11.5 ppb |
2015-02-20 | 1610-900-0830 | ND |
2015-02-20 | 1610-901-0905 | ND |
2015-02-20 | 1610-902-0845 | ND |
2015-02-20 | 1610-903-0945 | ND |
2015-02-20 | 1610-904-1040 | ND |
2015-02-20 | 1610-905-1020 | 8.30 ppb |
2015-02-20 | 1610-906-1000 | 8.90 ppb |
2015-02-20 | 1610-907-1010 | 8.60 ppb |
2015-03-10 | 1610-902-0940 | ND |
2015-03-10 | 1610-905-0825 | 10.7 ppb |
2015-03-10 | 1610-906-0840 | 9.80 ppb |
2015-03-10 | 1610-907-0900 | 12.8 ppb |
2015-05-13 | 1610-900-0805 | ND |
2015-05-13 | 1610-901-0825 | ND |
2015-05-13 | 1610-902-0840 | ND |
2015-05-13 | 1610-903-0920 | ND |
2015-05-13 | 1610-904-1010 | ND |
2015-05-13 | 1610-905-0955 | 6.80 ppb |
2015-05-13 | 1610-906-0930 | 6.80 ppb |
2015-05-13 | 1610-907-0945 | 6.70 ppb |
2015-08-13 | 1610-900-1015 | ND |
2015-08-13 | 1610-901-1000 | ND |
2015-08-13 | 1610-902-0950 | ND |
2015-08-13 | 1610-903-0900 | ND |
2015-08-13 | 1610-904-0845 | ND |
2015-08-13 | 1610-905-0810 | 3.10 ppb |
2015-08-13 | 1610-906-0755 | 2.50 ppb |
2015-08-13 | 1610-907-0745 | 3.80 ppb |
2015-11-12 | 1610-900-0800 | ND |
2015-11-12 | 1610-901-1110 | ND |
2015-11-12 | 1610-902-0840 | ND |
2015-11-12 | 1610-903-0910 | ND |
2015-11-12 | 1610-904-1050 | ND |
2015-11-12 | 1610-905-1020 | 6.80 ppb |
2015-11-12 | 1610-906-0920 | 5.10 ppb |
2015-11-12 | 1610-907-0940 | 8.90 ppb |
2016-02-10 | 1610-900-1015 | ND |
2016-02-10 | 1610-901-0955 | ND |
2016-02-10 | 1610-902-0940 | ND |
2016-02-10 | 1610-903-0920 | ND |
2016-02-10 | 1610-904-0810 | ND |
2016-02-10 | 1610-905-0830 | 17.7 ppb |
2016-02-10 | 1610-906-0850 | 16.3 ppb |
2016-02-10 | 1610-907-0905 | 17.2 ppb |
2016-05-11 | 1610-900-0900 | ND |
2016-05-11 | 1610-901-0915 | ND |
2016-05-11 | 1610-902-0930 | ND |
2016-05-11 | 1610-903-1140 | ND |
2016-05-11 | 1610-904-1025 | ND |
2016-05-11 | 1610-905-1040 | 15.6 ppb |
2016-05-11 | 1610-906-1100 | 8.10 ppb |
2016-05-11 | 1610-907-1110 | 11.7 ppb |
2016-08-10 | 1610-900-0800 | ND |
2016-08-10 | 1610-901-0830 | ND |
2016-08-10 | 1610-902-0820 | ND |
2016-08-10 | 1610-903-0855 | ND |
2016-08-10 | 1610-904-0945 | ND |
2016-08-10 | 1610-905-0935 | ND |
2016-08-10 | 1610-906-0930 | ND |
2016-08-10 | 1610-907-0915 | ND |
2016-11-09 | 1610-900-1055 | ND |
2016-11-09 | 1610-901-1035 | ND |
2016-11-09 | 1610-902-1045 | ND |
2016-11-09 | 1610-903-1000 | ND |
2016-11-09 | 1610-904-1110 | ND |
2016-11-09 | 1610-905-0925 | 10.3 ppb |
2016-11-09 | 1610-906-0935 | ND |
2016-11-09 | 1610-907-0945 | 10.5 ppb |
2017-02-08 | 1610-900-0720 | ND |
2017-02-08 | 1610-901-0740 | ND |
2017-02-08 | 1610-902-0735 | ND |
2017-02-08 | 1610-903-1030 | ND |
2017-02-08 | 1610-904-0915 | ND |
2017-02-08 | 1610-905-0935 | 13.3 ppb |
2017-02-08 | 1610-906-0955 | 11.5 ppb |
2017-02-08 | 1610-907-1010 | 10.1 ppb |
2017-05-09 | 1610-900-0720 | ND |
2017-05-09 | 1610-901-0740 | ND |
2017-05-09 | 1610-902-0755 | ND |
2017-05-09 | 1610-903-0820 | ND |
2017-05-09 | 1610-904-0950 | ND |
2017-05-09 | 1610-905-0930 | ND |
2017-05-09 | 1610-906-0840 | ND |
2017-05-09 | 1610-907-0915 | ND |
2017-08-09 | 1610-900-0710 | ND |
2017-08-09 | 1610-901-0725 | ND |
2017-08-09 | 1610-902-0740 | ND |
2017-08-09 | 1610-903-0800 | ND |
2017-08-09 | 1610-904-0900 | ND |
2017-08-09 | 1610-905-0845 | ND |
2017-08-09 | 1610-906-0830 | ND |
2017-08-09 | 1610-907-0815 | ND |
2017-11-07 | 1610-900-0820 | ND |
2017-11-07 | 1610-901-0850 | ND |
2017-11-07 | 1610-902-0840 | ND |
2017-11-07 | 1610-903-0915 | ND |
2017-11-07 | 1610-904-1015 | ND |
2017-11-07 | 1610-905-1000 | 3.10 ppb |
2017-11-07 | 1610-906-0945 | 2.90 ppb |
2017-11-07 | 1610-907-0935 | 3.00 ppb |
2018-02-14 | 1610-900-0710 | ND |
2018-02-14 | 1610-901-0740 | ND |
2018-02-14 | 1610-902-0755 | ND |
2018-02-14 | 1610-903-0820 | ND |
2018-02-14 | 1610-904-0930 | ND |
2018-02-14 | 1610-905-0915 | 6.50 ppb |
2018-02-14 | 1610-906-0855 | 6.00 ppb |
2018-02-14 | 1610-907-0840 | 6.30 ppb |
2018-05-09 | 1610-900-0750 | ND |
2018-05-09 | 1610-901-0810 | ND |
2018-05-09 | 1610-902-0820 | ND |
2018-05-09 | 1610-903-0840 | ND |
2018-05-09 | 1610-904-0950 | ND |
2018-05-09 | 1610-905-0930 | 5.70 ppb |
2018-05-09 | 1610-906-0910 | 6.30 ppb |
2018-05-09 | 1610-907-0900 | 6.80 ppb |
2018-08-08 | 1610-900-0715 | ND |
2018-08-08 | 1610-901-0730 | ND |
2018-08-08 | 1610-902-0740 | ND |
2018-08-08 | 1610-903-0800 | ND |
2018-08-08 | 1610-904-0900 | ND |
2018-08-08 | 1610-905-0840 | 5.00 ppb |
2018-08-08 | 1610-906-0830 | 4.70 ppb |
2018-08-08 | 1610-907-0815 | 5.30 ppb |
2018-11-15 | 9590-900-0850 | ND |
2018-11-15 | 9590-901-0910 | ND |
2018-11-15 | 9590-902-0920 | ND |
2018-11-15 | 9590-903-0940 | ND |
2018-11-15 | 9590-904-1050 | ND |
2018-11-15 | 9590-905-1040 | 5.20 ppb |
2018-11-15 | 9590-906-1020 | 5.10 ppb |
2018-11-15 | 9590-907-1010 | 5.50 ppb |
2019-02-14 | 1610-900-0900 | ND |
2019-02-14 | 1610-901-0915 | ND |
2019-02-14 | 1610-902-0925 | ND |
2019-02-14 | 1610-903-0945 | ND |
2019-02-14 | 1610-904-1035 | ND |
2019-02-14 | 1610-905-1025 | 3.50 ppb |
2019-02-14 | 1610-906-1010 | 3.30 ppb |
2019-02-14 | 1610-907-0955 | 3.60 ppb |
2019-05-08 | 1610-900-0700 | ND |
2019-05-08 | 1610-901-0715 | ND |
2019-05-08 | 1610-902-0730 | ND |
2019-05-08 | 1610-903-0800 | ND |
2019-05-08 | 1610-904-0910 | ND |
2019-05-08 | 1610-905-0840 | 5.70 ppb |
2019-05-08 | 1610-906-0830 | 6.50 ppb |
2019-05-08 | 1610-907-0820 | 5.60 ppb |
2019-08-15 | 1610-900-0730 | ND |
2019-08-15 | 1610-901-0740 | ND |
2019-08-15 | 1610-902-0755 | ND |
2019-08-15 | 1610-903-0815 | ND |
2019-08-15 | 1610-904-0930 | ND |
2019-08-15 | 1610-905-0910 | 6.60 ppb |
2019-08-15 | 1610-906-0845 | 6.40 ppb |
2019-08-15 | 1610-907-0830 | 7.30 ppb |
2019-11-13 | 1610-900-0650 | ND |
2019-11-13 | 1610-901-0710 | ND |
2019-11-13 | 1610-902-0725 | ND |
2019-11-13 | 1610-903-0740 | ND |
2019-11-13 | 1610-904-0840 | 2.90 ppb |
2019-11-13 | 1610-905-0830 | 2.80 ppb |
2019-11-13 | 1610-906-0815 | 2.70 ppb |
2019-11-13 | 1610-907-0800 | 2.90 ppb |