Bromoform
City of Denham Springs Water System
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.153 ppb | 32 | 6 | ND - 1.10 ppb |
| 2019 | 0.262 ppb | 32 | 10 | ND - 1.000 ppb |
| 2020 | 0.869 ppb | 16 | 14 | ND - 1.60 ppb |
| 2021 | 0.710 ppb | 16 | 13 | ND - 1.40 ppb |
| 2022 | 0.551 ppb | 16 | 10 | ND - 1.30 ppb |
| 2023 | 0.556 ppb | 16 | 10 | ND - 1.30 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.5 ppb
The EWG Health Guideline of 0.5 ppb for bromoform is based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer, harm to reproduction and child development, and change to fetal growth and development .
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-02-01 | 35371846001 | ND |
| 2018-02-01 | 35371846002 | ND |
| 2018-02-01 | 35371846003 | ND |
| 2018-02-01 | 35371846004 | ND |
| 2018-02-01 | 35371846001 | ND |
| 2018-02-01 | 35371846002 | ND |
| 2018-02-01 | 35371846003 | ND |
| 2018-02-01 | 35371846004 | ND |
| 2018-05-04 | 35390308001 | 1.10 ppb |
| 2018-05-04 | 35390308002 | 0.720 ppb |
| 2018-05-04 | 35390308003 | ND |
| 2018-05-04 | 35390308004 | 0.620 ppb |
| 2018-05-04 | 35390308001 | 1.10 ppb |
| 2018-05-04 | 35390308002 | 0.720 ppb |
| 2018-05-04 | 35390308003 | ND |
| 2018-05-04 | 35390308004 | 0.620 ppb |
| 2018-08-07 | 35409812001 | ND |
| 2018-08-07 | 35409812002 | ND |
| 2018-08-07 | 35409812003 | ND |
| 2018-08-07 | 35409812004 | ND |
| 2018-08-07 | 35409812001 | ND |
| 2018-08-07 | 35409812002 | ND |
| 2018-08-07 | 35409812003 | ND |
| 2018-08-07 | 35409812004 | ND |
| 2018-11-02 | 35428194001 | ND |
| 2018-11-02 | 35428194002 | ND |
| 2018-11-02 | 35428194003 | ND |
| 2018-11-02 | 35428194004 | ND |
| 2018-11-02 | 35428194001 | ND |
| 2018-11-02 | 35428194002 | ND |
| 2018-11-02 | 35428194003 | ND |
| 2018-11-02 | 35428194004 | ND |
| 2019-02-15 | 35448841001 | ND |
| 2019-02-15 | 35448841002 | 0.680 ppb |
| 2019-02-15 | 35448841003 | ND |
| 2019-02-15 | 35448841004 | ND |
| 2019-02-15 | 35448841001 | ND |
| 2019-02-15 | 35448841002 | 0.680 ppb |
| 2019-02-15 | 35448841003 | ND |
| 2019-02-15 | 35448841004 | ND |
| 2019-05-03 | 35466097001 | ND |
| 2019-05-03 | 35466097002 | ND |
| 2019-05-03 | 35466097003 | ND |
| 2019-05-03 | 35466097004 | ND |
| 2019-05-03 | 35466097001 | ND |
| 2019-05-03 | 35466097002 | ND |
| 2019-05-03 | 35466097003 | ND |
| 2019-05-03 | 35466097004 | ND |
| 2019-08-01 | 35486871001 | ND |
| 2019-08-01 | 35486871002 | ND |
| 2019-08-01 | 35486871003 | ND |
| 2019-08-01 | 35486871004 | ND |
| 2019-08-01 | 35486871001 | ND |
| 2019-08-01 | 35486871002 | ND |
| 2019-08-01 | 35486871003 | ND |
| 2019-08-01 | 35486871004 | ND |
| 2019-11-01 | 35509128001 | 1.000 ppb |
| 2019-11-01 | 35509128002 | 1.000 ppb |
| 2019-11-01 | 35509128003 | 0.750 ppb |
| 2019-11-01 | 35509128004 | 0.760 ppb |
| 2019-11-01 | 35509128001 | 1.000 ppb |
| 2019-11-01 | 35509128002 | 1.000 ppb |
| 2019-11-01 | 35509128003 | 0.750 ppb |
| 2019-11-01 | 35509128004 | 0.760 ppb |
| 2020-02-06 | 35529494001 | 0.860 ppb |
| 2020-02-06 | 35529494002 | 1.20 ppb |
| 2020-02-06 | 35529494003 | 1.60 ppb |
| 2020-02-06 | 35529494004 | 0.710 ppb |
| 2020-05-01 | 35547151001 | 1.40 ppb |
| 2020-05-01 | 35547151002 | 0.850 ppb |
| 2020-05-01 | 35547151003 | 1.000 ppb |
| 2020-05-01 | 35547151004 | 0.830 ppb |
| 2020-08-06 | 35569085001 | ND |
| 2020-08-06 | 35569085002 | 0.960 ppb |
| 2020-08-06 | 35569085003 | 0.740 ppb |
| 2020-08-06 | 35569085004 | 0.780 ppb |
| 2020-11-06 | 35590481001 | ND |
| 2020-11-06 | 35590481002 | 1.10 ppb |
| 2020-11-06 | 35590481003 | 1.20 ppb |
| 2020-11-06 | 35590481004 | 0.680 ppb |
| 2021-02-05 | 35609996001 | 0.660 ppb |
| 2021-02-05 | 35609996002 | 0.720 ppb |
| 2021-02-05 | 35609996003 | 1.000 ppb |
| 2021-02-05 | 35609996004 | 0.410 ppb |
| 2021-05-06 | 35631658001 | 0.840 ppb |
| 2021-05-06 | 35631658002 | 0.790 ppb |
| 2021-05-06 | 35631658003 | 1.30 ppb |
| 2021-05-06 | 35631658004 | 0.380 ppb |
| 2021-08-12 | 35655918001 | 0.840 ppb |
| 2021-08-12 | 35655918002 | 1.40 ppb |
| 2021-08-12 | 35655918003 | ND |
| 2021-08-12 | 35655918004 | ND |
| 2021-11-05 | 35676298001 | ND |
| 2021-11-05 | 35676298002 | 0.880 ppb |
| 2021-11-05 | 35676298003 | 1.40 ppb |
| 2021-11-05 | 35676298004 | 0.740 ppb |
| 2022-02-10 | 35696562001 | ND |
| 2022-02-10 | 35696562002 | ND |
| 2022-02-10 | 35696562003 | 0.890 ppb |
| 2022-02-10 | 35696562004 | 0.520 ppb |
| 2022-05-06 | 35715937001 | ND |
| 2022-05-06 | 35715937002 | ND |
| 2022-05-06 | 35715937003 | 1.30 ppb |
| 2022-05-06 | 35715937004 | 0.790 ppb |
| 2022-08-17 | 35741192001 | 1.30 ppb |
| 2022-08-17 | 35741192002 | 1.10 ppb |
| 2022-08-17 | 35741192003 | 0.950 ppb |
| 2022-08-17 | 35741192004 | ND |
| 2022-11-04 | 35758150001 | ND |
| 2022-11-04 | 35758150002 | 0.950 ppb |
| 2022-11-04 | 35758150003 | 0.590 ppb |
| 2022-11-04 | 35758150004 | 0.420 ppb |
| 2023-02-03 | 35776990001 | 0.570 ppb |
| 2023-02-03 | 35776990002 | 0.850 ppb |
| 2023-02-03 | 35776990003 | 1.30 ppb |
| 2023-02-03 | 35776990004 | ND |
| 2023-05-05 | 35797781001 | ND |
| 2023-05-05 | 35797781002 | 1.000 ppb |
| 2023-05-05 | 35797781003 | 1.000 ppb |
| 2023-05-05 | 35797781004 | ND |
| 2023-08-30 | 35824650001 | 0.900 ppb |
| 2023-08-30 | 35824650002 | 0.740 ppb |
| 2023-08-30 | 35824650003 | 0.910 ppb |
| 2023-08-30 | 35824650004 | ND |
| 2023-11-03 | 35839248001 | ND |
| 2023-11-03 | 35839248002 | 1.10 ppb |
| 2023-11-03 | 35839248003 | 0.520 ppb |
| 2023-11-03 | 35839248004 | ND |