Bromoform
Olivenhain Municipal Water District
Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
275
Samples
0
Samples exceeding legal limit (MCL)
257
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 | 5.61 ppb | 37 | 37 | 2.30 ppb - 13.1 ppb |
| 2015 | 4.44 ppb | 45 | 45 | 2.60 ppb - 9.60 ppb |
| 2016 | 3.55 ppb | 42 | 42 | 1.80 ppb - 8.30 ppb |
| 2017 | 2.48 ppb | 60 | 42 | ND - 5.40 ppb |
| 2018 | 4.13 ppb | 46 | 46 | 2.60 ppb - 5.40 ppb |
| 2019 | 5.14 ppb | 45 | 45 | 2.60 ppb - 7.80 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.5 ppb
The EWG Health Guideline of 0.5 ppb for bromoform 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 |
|---|---|---|
| 2014-01-14 | 9590-003-1137 | 3.20 ppb |
| 2014-02-06 | 9590-003-1045 | 2.90 ppb |
| 2014-02-12 | 3761-900-1100 | 2.80 ppb |
| 2014-02-12 | 3761-901-1030 | 3.00 ppb |
| 2014-02-12 | 3761-902-1055 | 2.50 ppb |
| 2014-02-12 | 3761-903-1020 | 2.50 ppb |
| 2014-02-12 | 3761-904-1140 | 2.50 ppb |
| 2014-02-12 | 3761-905-1200 | 2.70 ppb |
| 2014-02-12 | 3761-906-1215 | 2.60 ppb |
| 2014-02-12 | 3761-907-1130 | 2.60 ppb |
| 2014-03-13 | 9590-003-1114 | 6.10 ppb |
| 2014-04-22 | 9590-003-1130 | 3.10 ppb |
| 2014-05-13 | 3761-900-1045 | 2.60 ppb |
| 2014-05-13 | 3761-901-1115 | 2.80 ppb |
| 2014-05-13 | 3761-902-0835 | 2.60 ppb |
| 2014-05-13 | 3761-903-0855 | 2.40 ppb |
| 2014-05-13 | 3761-904-0950 | 2.70 ppb |
| 2014-05-13 | 3761-905-0850 | 2.90 ppb |
| 2014-05-13 | 3761-906-1025 | 2.30 ppb |
| 2014-05-13 | 3761-907-1015 | 2.80 ppb |
| 2014-05-14 | 9590-003-1500 | 3.10 ppb |
| 2014-06-18 | 9590-003-1030 | 6.50 ppb |
| 2014-07-24 | 9590-003-1145 | 11.0 ppb |
| 2014-08-12 | 3761-900-0940 | 13.1 ppb |
| 2014-08-12 | 3761-901-1015 | 11.6 ppb |
| 2014-08-12 | 3761-902-0920 | 10.6 ppb |
| 2014-08-12 | 3761-903-0940 | 11.4 ppb |
| 2014-08-12 | 3761-904-0810 | 10.7 ppb |
| 2014-08-12 | 3761-905-0820 | 11.4 ppb |
| 2014-08-12 | 3761-906-0740 | 12.0 ppb |
| 2014-08-12 | 3761-907-0910 | 11.4 ppb |
| 2014-08-13 | 9590-003-1320 | 11.0 ppb |
| 2014-08-20 | 9590-003-1330 | 9.30 ppb |
| 2014-09-10 | 9590-003-1115 | 4.80 ppb |
| 2014-10-23 | 9590-003-1110 | 5.10 ppb |
| 2014-11-13 | 9590-003-1130 | 3.70 ppb |
| 2014-12-10 | 9590-003-1220 | 3.40 ppb |
| 2015-01-12 | 9590-003-1410 | 3.30 ppb |
| 2015-02-10 | 9590-003-1330 | 4.30 ppb |
| 2015-02-10 | 3761-900-0900 | 2.80 ppb |
| 2015-02-10 | 3761-901-0810 | 2.70 ppb |
| 2015-02-10 | 3761-902-1015 | 2.90 ppb |
| 2015-02-10 | 3761-903-1115 | 3.10 ppb |
| 2015-02-10 | 3761-904-0830 | 2.90 ppb |
| 2015-02-10 | 3761-904-0905 | 2.80 ppb |
| 2015-02-10 | 3761-905-1030 | 2.90 ppb |
| 2015-02-10 | 3761-907-0940 | 2.80 ppb |
| 2015-03-12 | 9590-003-1140 | 4.10 ppb |
| 2015-04-08 | 9590-003-1240 | 4.20 ppb |
| 2015-05-12 | 9590-003-1315 | 6.60 ppb |
| 2015-05-12 | 3761-900-1010 | 6.90 ppb |
| 2015-05-12 | 3761-901-1040 | 6.30 ppb |
| 2015-05-12 | 3761-902-0940 | 6.40 ppb |
| 2015-05-12 | 3761-903-1020 | 6.30 ppb |
| 2015-05-12 | 3761-904-0900 | 7.60 ppb |
| 2015-05-12 | 3761-905-0855 | 7.50 ppb |
| 2015-05-12 | 3761-906-0830 | 6.90 ppb |
| 2015-05-12 | 3761-907-0930 | 6.50 ppb |
| 2015-06-10 | 9590-003-1205 | 9.60 ppb |
| 2015-07-09 | 9590-003-1340 | 9.00 ppb |
| 2015-08-11 | 9588-900-0830 | 4.90 ppb |
| 2015-08-11 | 9588-901-0920 | 4.80 ppb |
| 2015-08-11 | 9588-902-0930 | 2.60 ppb |
| 2015-08-11 | 9588-903-1015 | 2.70 ppb |
| 2015-08-11 | 9588-904-0845 | 3.10 ppb |
| 2015-08-11 | 9588-905-1000 | 5.00 ppb |
| 2015-08-11 | 9588-906-0815 | 2.80 ppb |
| 2015-08-11 | 9588-907-0855 | 5.00 ppb |
| 2015-08-12 | 9590-003-1315 | 4.00 ppb |
| 2015-08-19 | 9590-003-1221 | 3.80 ppb |
| 2015-09-09 | 9590-003-1336 | 3.20 ppb |
| 2015-10-14 | 9590-003-1315 | 3.40 ppb |
| 2015-11-10 | 9590-003-1315 | 3.80 ppb |
| 2015-11-10 | 9588-900-0920 | 3.30 ppb |
| 2015-11-10 | 9588-901-0845 | 3.90 ppb |
| 2015-11-10 | 9588-902-1100 | 3.50 ppb |
| 2015-11-10 | 9588-903-1040 | 3.60 ppb |
| 2015-11-10 | 9588-904-0840 | 3.40 ppb |
| 2015-11-10 | 9588-905-0815 | 3.50 ppb |
| 2015-11-10 | 9588-905-1020 | 3.80 ppb |
| 2015-11-10 | 9588-907-0945 | 3.90 ppb |
| 2015-12-09 | 9590-003-1345 | 3.40 ppb |
| 2016-01-13 | 9590-003-1350 | 3.70 ppb |
| 2016-02-10 | 9590-003-1345 | 3.40 ppb |
| 2016-02-10 | 9588-900-0950 | 2.30 ppb |
| 2016-02-10 | 9588-901-0840 | 1.80 ppb |
| 2016-02-10 | 9588-901-0950 | 1.90 ppb |
| 2016-02-10 | 9588-903-0910 | 2.80 ppb |
| 2016-02-10 | 9588-904-0950 | 2.40 ppb |
| 2016-02-10 | 9588-905-1020 | 2.80 ppb |
| 2016-02-10 | 9588-906-1020 | 2.90 ppb |
| 2016-02-10 | 9588-907-0920 | 2.40 ppb |
| 2016-03-09 | 9590-003-1425 | 8.30 ppb |
| 2016-04-13 | 9590-003-1355 | 4.10 ppb |
| 2016-05-10 | 9588-900-0930 | 3.50 ppb |
| 2016-05-10 | 9588-901-0850 | 3.00 ppb |
| 2016-05-10 | 9588-902-0110 | 3.10 ppb |
| 2016-05-10 | 9588-903-1040 | 3.10 ppb |
| 2016-05-10 | 9588-904-0910 | 3.20 ppb |
| 2016-05-10 | 9588-905-1040 | 3.50 ppb |
| 2016-05-10 | 9588-906-0840 | 3.40 ppb |
| 2016-05-10 | 9588-907-1000 | 3.00 ppb |
| 2016-05-25 | 9590-003-1330 | 3.50 ppb |
| 2016-07-20 | 9590-003-1320 | 5.00 ppb |
| 2016-08-09 | 3761-900-0850 | 4.80 ppb |
| 2016-08-09 | 3761-901-0815 | 4.50 ppb |
| 2016-08-09 | 3761-902-0930 | 3.80 ppb |
| 2016-08-09 | 3761-903-0950 | 3.20 ppb |
| 2016-08-09 | 3761-904-0830 | 4.00 ppb |
| 2016-08-09 | 3761-905-1000 | 4.80 ppb |
| 2016-08-09 | 3761-906-0800 | 3.70 ppb |
| 2016-08-09 | 3761-907-0930 | 4.30 ppb |
| 2016-08-10 | 9590-003-1354 | 6.20 ppb |
| 2016-08-17 | 9590-003-1100 | 4.90 ppb |
| 2016-10-05 | 9590-003-1355 | 2.60 ppb |
| 2016-11-16 | 3761-900-1020 | 3.40 ppb |
| 2016-11-16 | 3761-901-0920 | 3.10 ppb |
| 2016-11-16 | 3761-902-1020 | 2.70 ppb |
| 2016-11-16 | 3761-903-1050 | 2.70 ppb |
| 2016-11-16 | 3761-904-0935 | 3.40 ppb |
| 2016-11-16 | 3761-905-1050 | 3.30 ppb |
| 2016-11-16 | 3761-906-0825 | 3.70 ppb |
| 2016-11-16 | 3761-907-0940 | 3.40 ppb |
| 2016-11-21 | 9590-003-1217 | 3.60 ppb |
| 2017-01-10 | 9590-003-1200 | 3.30 ppb |
| 2017-02-15 | 9590-003-1610 | 5.40 ppb |
| 2017-02-15 | 3761-900-1000 | 4.70 ppb |
| 2017-02-15 | 3761-901-0850 | 4.20 ppb |
| 2017-02-15 | 3761-902-0950 | 4.00 ppb |
| 2017-02-15 | 3761-903-1020 | 4.40 ppb |
| 2017-02-15 | 3761-904-0900 | 4.30 ppb |
| 2017-02-15 | 3761-905-1040 | 4.00 ppb |
| 2017-02-15 | 3761-906-0820 | 4.00 ppb |
| 2017-02-15 | 3761-907-0925 | 3.90 ppb |
| 2017-03-15 | 9590-003-1340 | 2.40 ppb |
| 2017-04-18 | 9590-003-1330 | ND |
| 2017-05-09 | 3761-900-0900 | ND |
| 2017-05-09 | 3761-901-0810 | ND |
| 2017-05-09 | 3761-902-0930 | ND |
| 2017-05-09 | 3761-903-0900 | ND |
| 2017-05-09 | 3761-904-0830 | ND |
| 2017-05-09 | 3761-905-0940 | ND |
| 2017-05-09 | 3761-906-0800 | ND |
| 2017-05-09 | 3761-907-0840 | ND |
| 2017-05-11 | 9590-003-1530 | ND |
| 2017-06-20 | 3761-900-0955 | 1.20 ppb |
| 2017-06-20 | 3761-901-0925 | 1.40 ppb |
| 2017-06-20 | 3761-902-0920 | 1.50 ppb |
| 2017-06-20 | 3761-903-0950 | 1.40 ppb |
| 2017-06-20 | 3761-904-0850 | 1.70 ppb |
| 2017-06-20 | 3761-905-1015 | 1.50 ppb |
| 2017-06-20 | 3761-906-0750 | 1.70 ppb |
| 2017-06-20 | 3761-907-0810 | 1.50 ppb |
| 2017-07-05 | 9590-003-1430 | 1.20 ppb |
| 2017-07-11 | 3761-900-0940 | ND |
| 2017-07-11 | 3761-901-0840 | ND |
| 2017-07-11 | 3761-902-1000 | ND |
| 2017-07-11 | 3761-903-0925 | ND |
| 2017-07-11 | 3761-904-0845 | ND |
| 2017-07-11 | 3761-905-1000 | ND |
| 2017-07-11 | 3761-906-0815 | ND |
| 2017-07-11 | 3761-907-0910 | ND |
| 2017-08-02 | 9590-003-1300 | 3.90 ppb |
| 2017-08-17 | 3761-900-1100 | 4.60 ppb |
| 2017-08-17 | 3761-901-1010 | 4.50 ppb |
| 2017-08-17 | 3761-902-1125 | 4.60 ppb |
| 2017-08-17 | 3761-903-1155 | 3.90 ppb |
| 2017-08-17 | 3761-904-1045 | 4.80 ppb |
| 2017-08-17 | 3761-905-1150 | 5.30 ppb |
| 2017-08-17 | 3761-906-1015 | 3.70 ppb |
| 2017-08-17 | 3761-907-1120 | 4.60 ppb |
| 2017-08-24 | 9590-003-0900 | 2.50 ppb |
| 2017-09-13 | 9590-003-1300 | 4.10 ppb |
| 2017-10-10 | 9590-003-1355 | 4.50 ppb |
| 2017-11-07 | 9590-003-1425 | 4.30 ppb |
| 2017-11-14 | 9590-900-1050 | 4.40 ppb |
| 2017-11-14 | 9590-901-1130 | 3.60 ppb |
| 2017-11-14 | 9590-902-0925 | 3.60 ppb |
| 2017-11-14 | 9590-903-0955 | 3.50 ppb |
| 2017-11-14 | 9590-904-1025 | 3.80 ppb |
| 2017-11-14 | 9590-905-0930 | 4.60 ppb |
| 2017-11-14 | 9590-907-1010 | 4.30 ppb |
| 2017-12-05 | 9590-906-1025 | 4.50 ppb |
| 2017-12-14 | 9590-003-1330 | 3.30 ppb |
| 2018-01-18 | 9590-003-1320 | 2.60 ppb |
| 2018-02-13 | 9590-900-1000 | 4.70 ppb |
| 2018-02-13 | 9590-901-0930 | 4.60 ppb |
| 2018-02-13 | 9590-902-1010 | 4.70 ppb |
| 2018-02-13 | 9590-903-1045 | 4.80 ppb |
| 2018-02-13 | 9590-904-0840 | 4.90 ppb |
| 2018-02-13 | 9590-905-1100 | 4.80 ppb |
| 2018-02-13 | 9590-906-0920 | 4.90 ppb |
| 2018-02-13 | 9590-907-1030 | 4.80 ppb |
| 2018-02-14 | 9590-003-1120 | 5.40 ppb |
| 2018-03-13 | 9590-003-1120 | 5.40 ppb |
| 2018-04-11 | 9590-003-1245 | 4.90 ppb |
| 2018-05-08 | 9590-003-1330 | 3.10 ppb |
| 2018-05-14 | 9590-900-0820 | 3.20 ppb |
| 2018-05-14 | 9590-901-0800 | 3.10 ppb |
| 2018-05-14 | 9590-902-0800 | 3.20 ppb |
| 2018-05-14 | 9590-903-0840 | 3.60 ppb |
| 2018-05-14 | 9590-904-0930 | 3.50 ppb |
| 2018-05-14 | 9590-905-1000 | 3.20 ppb |
| 2018-05-14 | 9590-906-1000 | 3.50 ppb |
| 2018-05-14 | 9590-907-0840 | 3.20 ppb |
| 2018-06-19 | 9590-003-1330 | 2.60 ppb |
| 2018-07-30 | 9590-003-1430 | 4.70 ppb |
| 2018-08-22 | 9590-003-0930 | 4.30 ppb |
| 2018-09-12 | 9590-003-1310 | 3.30 ppb |
| 2018-09-26 | 9590-003-1030 | 3.50 ppb |
| 2018-09-26 | 9590-900-0945 | 3.30 ppb |
| 2018-09-26 | 9590-901-1020 | 3.30 ppb |
| 2018-09-26 | 9590-902-0915 | 3.60 ppb |
| 2018-09-26 | 9590-903-0840 | 3.50 ppb |
| 2018-09-26 | 9590-904-1050 | 3.20 ppb |
| 2018-09-26 | 9590-905-0830 | 3.40 ppb |
| 2018-09-26 | 9590-906-1120 | 3.30 ppb |
| 2018-09-26 | 9590-907-0915 | 3.30 ppb |
| 2018-10-11 | 9590-003-1320 | 4.70 ppb |
| 2018-11-06 | 9590-003-1500 | 3.60 ppb |
| 2018-11-06 | 9590-900-1105 | 5.10 ppb |
| 2018-11-06 | 9590-901-1030 | 5.00 ppb |
| 2018-11-06 | 9590-902-1100 | 5.00 ppb |
| 2018-11-06 | 9590-903-1030 | 5.20 ppb |
| 2018-11-06 | 9590-904-0930 | 5.00 ppb |
| 2018-11-06 | 9590-905-0920 | 5.00 ppb |
| 2018-11-06 | 9590-906-0900 | 5.10 ppb |
| 2018-11-06 | 9590-907-0955 | 5.10 ppb |
| 2018-11-07 | 9590-003-0730 | 4.80 ppb |
| 2018-12-04 | 9590-003-1300 | 4.90 ppb |
| 2019-01-09 | 9590-003-1215 | 3.60 ppb |
| 2019-02-13 | 9590-003-0730 | 3.20 ppb |
| 2019-02-13 | 9590-900-0940 | 3.00 ppb |
| 2019-02-13 | 9590-901-0905 | 2.80 ppb |
| 2019-02-13 | 9590-902-0900 | 2.70 ppb |
| 2019-02-13 | 9590-903-0940 | 2.90 ppb |
| 2019-02-13 | 9590-904-1040 | 2.80 ppb |
| 2019-02-13 | 9590-905-1100 | 2.80 ppb |
| 2019-02-13 | 9590-906-1020 | 3.00 ppb |
| 2019-02-13 | 9590-907-1040 | 2.60 ppb |
| 2019-03-13 | 9590-003-1300 | 3.80 ppb |
| 2019-04-11 | 9590-003-1425 | 6.10 ppb |
| 2019-05-14 | 9590-003-0640 | 4.90 ppb |
| 2019-05-21 | 9590-900-0840 | 5.80 ppb |
| 2019-05-21 | 9590-901-0930 | 5.50 ppb |
| 2019-05-21 | 9590-902-1030 | 5.20 ppb |
| 2019-05-21 | 9590-903-1120 | 5.90 ppb |
| 2019-05-21 | 9590-904-0930 | 5.90 ppb |
| 2019-05-21 | 9590-905-1045 | 5.60 ppb |
| 2019-05-21 | 9590-906-0840 | 5.80 ppb |
| 2019-05-21 | 9590-907-0955 | 5.60 ppb |
| 2019-06-12 | 9590-003-1150 | 7.80 ppb |
| 2019-07-09 | 9590-003-0940 | 5.10 ppb |
| 2019-08-13 | 9590-900-0910 | 4.60 ppb |
| 2019-08-13 | 9590-901-0835 | 4.50 ppb |
| 2019-08-13 | 9590-902-0820 | 4.40 ppb |
| 2019-08-13 | 9590-903-0905 | 4.80 ppb |
| 2019-08-13 | 9590-904-0950 | 4.60 ppb |
| 2019-08-13 | 9590-905-1015 | 4.40 ppb |
| 2019-08-13 | 9590-906-1020 | 4.70 ppb |
| 2019-08-13 | 9590-907-0935 | 4.60 ppb |
| 2019-08-14 | 9590-003-0720 | 5.30 ppb |
| 2019-08-14 | 9590-003-0735 | 3.50 ppb |
| 2019-09-11 | 9590-003-0730 | 6.40 ppb |
| 2019-10-16 | 9590-003-1145 | 4.90 ppb |
| 2019-11-13 | 9590-003-1110 | 7.00 ppb |
| 2019-11-13 | 9590-900-0840 | 7.50 ppb |
| 2019-11-13 | 9590-903-0950 | 7.70 ppb |
| 2019-11-13 | 9590-904-1030 | 7.30 ppb |
| 2019-11-13 | 9590-905-0945 | 7.40 ppb |
| 2019-11-13 | 9590-906-1050 | 7.50 ppb |
| 2019-12-05 | 9590-901-1105 | 7.00 ppb |
| 2019-12-05 | 9590-902-0010 | 7.60 ppb |
| 2019-12-05 | 9590-907-1135 | 7.20 ppb |
| 2019-12-18 | 9590-003-1135 | 6.00 ppb |