Bromoform
Beauregard Water Works District #3
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 | 0.712 ppb | 48 | 22 | ND - 3.80 ppb |
| 2019 | 0.705 ppb | 48 | 22 | ND - 3.00 ppb |
| 2020 | 0.750 ppb | 24 | 13 | ND - 3.00 ppb |
| 2021 | 0.818 ppb | 24 | 13 | ND - 3.20 ppb |
| 2022 | 0.674 ppb | 24 | 12 | ND - 2.70 ppb |
| 2023 | 0.543 ppb | 24 | 10 | ND - 3.40 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 |
|---|---|---|
| 2018-03-07 | 35379177001 | ND |
| 2018-03-07 | 35379177002 | ND |
| 2018-03-07 | 35379177003 | ND |
| 2018-03-07 | 35379177004 | 3.80 ppb |
| 2018-03-07 | 35379177005 | 1.50 ppb |
| 2018-03-07 | 35379177006 | ND |
| 2018-03-07 | 35379177001 | ND |
| 2018-03-07 | 35379177002 | ND |
| 2018-03-07 | 35379177003 | ND |
| 2018-03-07 | 35379177004 | 3.80 ppb |
| 2018-03-07 | 35379177005 | 1.50 ppb |
| 2018-03-07 | 35379177006 | ND |
| 2018-06-13 | 35398741001 | ND |
| 2018-06-13 | 35398741002 | 0.810 ppb |
| 2018-06-13 | 35398741003 | ND |
| 2018-06-13 | 35398741004 | 2.50 ppb |
| 2018-06-13 | 35398741005 | ND |
| 2018-06-13 | 35398741006 | 1.50 ppb |
| 2018-06-13 | 35398741001 | ND |
| 2018-06-13 | 35398741002 | 0.810 ppb |
| 2018-06-13 | 35398741003 | ND |
| 2018-06-13 | 35398741004 | 2.50 ppb |
| 2018-06-13 | 35398741005 | ND |
| 2018-06-13 | 35398741006 | 1.50 ppb |
| 2018-09-04 | 35416221001 | ND |
| 2018-09-04 | 35416221002 | 0.890 ppb |
| 2018-09-04 | 35416221003 | ND |
| 2018-09-04 | 35416226001 | 0.600 ppb |
| 2018-09-04 | 35416226002 | ND |
| 2018-09-04 | 35416226003 | 1.50 ppb |
| 2018-09-04 | 35416221001 | ND |
| 2018-09-04 | 35416221002 | 0.890 ppb |
| 2018-09-04 | 35416221003 | ND |
| 2018-09-04 | 35416226001 | 0.600 ppb |
| 2018-09-04 | 35416226002 | ND |
| 2018-09-04 | 35416226003 | 1.50 ppb |
| 2018-12-12 | 35437374001 | ND |
| 2018-12-12 | 35437374002 | 0.580 ppb |
| 2018-12-12 | 35437374003 | ND |
| 2018-12-12 | 35437374004 | 2.20 ppb |
| 2018-12-12 | 35437374005 | 1.20 ppb |
| 2018-12-12 | 35437374006 | ND |
| 2018-12-12 | 35437374001 | ND |
| 2018-12-12 | 35437374002 | 0.580 ppb |
| 2018-12-12 | 35437374003 | ND |
| 2018-12-12 | 35437374004 | 2.20 ppb |
| 2018-12-12 | 35437374005 | 1.20 ppb |
| 2018-12-12 | 35437374006 | ND |
| 2019-03-11 | 35454715001 | ND |
| 2019-03-11 | 35454715002 | 2.50 ppb |
| 2019-03-11 | 35454716001 | ND |
| 2019-03-11 | 35454716002 | ND |
| 2019-03-11 | 35454716003 | ND |
| 2019-03-11 | 35454715001 | ND |
| 2019-03-11 | 35454715002 | 2.50 ppb |
| 2019-03-11 | 35454716001 | ND |
| 2019-03-11 | 35454716002 | ND |
| 2019-03-11 | 35454716003 | ND |
| 2019-03-14 | 35454715003 | 1.20 ppb |
| 2019-03-14 | 35454715003 | 1.20 ppb |
| 2019-06-03 | 35474282001 | ND |
| 2019-06-03 | 35474282002 | ND |
| 2019-06-03 | 35474282003 | 0.560 ppb |
| 2019-06-03 | 35474284001 | ND |
| 2019-06-03 | 35474284002 | 1.30 ppb |
| 2019-06-03 | 35474284003 | 2.30 ppb |
| 2019-06-03 | 35474282001 | ND |
| 2019-06-03 | 35474282002 | ND |
| 2019-06-03 | 35474282003 | 0.560 ppb |
| 2019-06-03 | 35474284001 | ND |
| 2019-06-03 | 35474284002 | 1.30 ppb |
| 2019-06-03 | 35474284003 | 2.30 ppb |
| 2019-09-03 | 35495824001 | 0.370 ppb |
| 2019-09-03 | 35495831001 | 0.380 ppb |
| 2019-09-03 | 35495831002 | 0.820 ppb |
| 2019-09-03 | 35495831003 | ND |
| 2019-09-03 | 35495824001 | 0.370 ppb |
| 2019-09-03 | 35495831001 | 0.380 ppb |
| 2019-09-03 | 35495831002 | 0.820 ppb |
| 2019-09-03 | 35495831003 | ND |
| 2019-09-26 | 35501131001 | 3.00 ppb |
| 2019-09-26 | 35501131002 | ND |
| 2019-09-26 | 35501131001 | 3.00 ppb |
| 2019-09-26 | 35501131002 | ND |
| 2019-12-02 | 35516981001 | ND |
| 2019-12-02 | 35516981002 | 2.90 ppb |
| 2019-12-02 | 35516981003 | 1.60 ppb |
| 2019-12-02 | 35516986001 | ND |
| 2019-12-02 | 35516986002 | ND |
| 2019-12-02 | 35516986003 | ND |
| 2019-12-02 | 35516981001 | ND |
| 2019-12-02 | 35516981002 | 2.90 ppb |
| 2019-12-02 | 35516981003 | 1.60 ppb |
| 2019-12-02 | 35516986001 | ND |
| 2019-12-02 | 35516986002 | ND |
| 2019-12-02 | 35516986003 | ND |
| 2020-03-12 | 35537457001 | ND |
| 2020-03-12 | 35537457002 | ND |
| 2020-03-12 | 35537457003 | ND |
| 2020-03-12 | 35537457004 | 2.20 ppb |
| 2020-03-12 | 35537457005 | 1.20 ppb |
| 2020-03-12 | 35537457006 | ND |
| 2020-06-04 | 35554631001 | ND |
| 2020-06-04 | 35554631002 | ND |
| 2020-06-04 | 35554631003 | 0.930 ppb |
| 2020-06-04 | 35554631004 | 2.20 ppb |
| 2020-06-04 | 35554631005 | 1.30 ppb |
| 2020-06-04 | 35554631006 | ND |
| 2020-09-25 | 35580612001 | ND |
| 2020-09-25 | 35580612002 | 0.500 ppb |
| 2020-09-25 | 35580612003 | ND |
| 2020-09-25 | 35580612004 | 3.00 ppb |
| 2020-09-25 | 35580612005 | 1.60 ppb |
| 2020-09-25 | 35580612006 | 0.470 ppb |
| 2020-12-04 | 35596660001 | ND |
| 2020-12-04 | 35596660002 | 0.430 ppb |
| 2020-12-04 | 35596660003 | ND |
| 2020-12-04 | 35596660004 | 2.50 ppb |
| 2020-12-04 | 35596660005 | 1.20 ppb |
| 2020-12-04 | 35596660006 | 0.480 ppb |
| 2021-03-29 | 35622529001 | ND |
| 2021-03-29 | 35622529002 | ND |
| 2021-03-29 | 35622529003 | ND |
| 2021-03-29 | 35622529004 | 3.20 ppb |
| 2021-03-29 | 35622529005 | 1.30 ppb |
| 2021-03-29 | 35622529006 | ND |
| 2021-06-23 | 35643508001 | ND |
| 2021-06-23 | 35643508002 | 0.580 ppb |
| 2021-06-23 | 35643508003 | 0.840 ppb |
| 2021-06-23 | 35643508004 | 3.00 ppb |
| 2021-06-23 | 35643508005 | 1.50 ppb |
| 2021-06-23 | 35643508006 | 0.440 ppb |
| 2021-09-09 | 35663633001 | ND |
| 2021-09-09 | 35663633002 | ND |
| 2021-09-09 | 35663633003 | 0.900 ppb |
| 2021-09-09 | 35663633004 | 3.20 ppb |
| 2021-09-09 | 35663633005 | 1.40 ppb |
| 2021-09-09 | 35663633006 | ND |
| 2021-12-17 | 35685396001 | ND |
| 2021-12-17 | 35685396002 | 0.420 ppb |
| 2021-12-17 | 35685396003 | ND |
| 2021-12-17 | 35685396004 | 2.30 ppb |
| 2021-12-17 | 35685396005 | ND |
| 2021-12-17 | 35685396006 | 0.550 ppb |
| 2022-03-17 | 35704944001 | ND |
| 2022-03-17 | 35704944002 | ND |
| 2022-03-17 | 35704944003 | 0.780 ppb |
| 2022-03-17 | 35704944004 | 1.70 ppb |
| 2022-03-17 | 35704944005 | 0.910 ppb |
| 2022-03-17 | 35704944006 | ND |
| 2022-06-02 | 35722448001 | ND |
| 2022-06-02 | 35722448002 | 0.420 ppb |
| 2022-06-02 | 35722448003 | ND |
| 2022-06-02 | 35722448004 | 2.30 ppb |
| 2022-06-02 | 35722448005 | 1.20 ppb |
| 2022-06-02 | 35722448006 | ND |
| 2022-09-09 | 35745863001 | ND |
| 2022-09-09 | 35745863002 | ND |
| 2022-09-09 | 35745863003 | 1.40 ppb |
| 2022-09-09 | 35745863004 | 2.50 ppb |
| 2022-09-09 | 35745863005 | 1.20 ppb |
| 2022-09-09 | 35745863006 | 0.530 ppb |
| 2022-12-09 | 35765897001 | 2.70 ppb |
| 2022-12-09 | 35765897002 | ND |
| 2022-12-09 | 35765897003 | 0.530 ppb |
| 2022-12-09 | 35765897004 | ND |
| 2022-12-09 | 35765897005 | ND |
| 2022-12-09 | 35765897006 | ND |
| 2023-03-17 | 35786901001 | ND |
| 2023-03-17 | 35786901002 | ND |
| 2023-03-17 | 35786901003 | ND |
| 2023-03-17 | 35786901004 | 1.70 ppb |
| 2023-03-17 | 35786901005 | ND |
| 2023-03-17 | 35786901006 | 0.410 ppb |
| 2023-06-28 | 35809733001 | ND |
| 2023-06-28 | 35809733002 | 0.660 ppb |
| 2023-06-28 | 35809733003 | ND |
| 2023-06-28 | 35809733004 | 3.30 ppb |
| 2023-06-28 | 35809733005 | ND |
| 2023-06-28 | 35809733006 | 0.440 ppb |
| 2023-09-12 | 35827904001 | ND |
| 2023-09-12 | 35827904002 | ND |
| 2023-09-12 | 35827904003 | ND |
| 2023-09-12 | 35827904004 | 1.30 ppb |
| 2023-09-12 | 35827904005 | ND |
| 2023-09-12 | 35827904006 | 0.410 ppb |
| 2023-12-05 | 35846836001 | 3.40 ppb |
| 2023-12-05 | 35846836002 | ND |
| 2023-12-05 | 35846836003 | 0.740 ppb |
| 2023-12-05 | 35846836004 | ND |
| 2023-12-05 | 35846836005 | ND |
| 2023-12-05 | 35846836006 | 0.660 ppb |