Know Your Environment. Protect Your Health.

Bromoform

Hoke County Regional--rockfish

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.28 ppb85ND - 2.82 ppb
20192.32 ppb42ND - 5.40 ppb
20200.233 ppb122ND - 1.60 ppb
20214.48 ppb881.000 ppb - 11.8 ppb
20224.95 ppb86ND - 11.4 ppb
20232.35 ppb85ND - 7.50 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
2018-02-1237729_18-058582.75 ppb
2018-02-1237729_18-05857ND
2018-05-1537729_18-196222.82 ppb
2018-05-1537729_18-196212.67 ppb
2018-08-0637729_18-32766ND
2018-08-0637729_18-32767ND
2018-11-0737729_18-466941.000 ppb
2018-11-0737729_18-466951.000 ppb
2019-05-0637729_19-18356ND
2019-05-0637729_19-18357ND
2019-08-1337729_19-346833.90 ppb
2019-08-1337729_19-346855.40 ppb
2020-02-1337729_20-06335AND
2020-02-1337729_20-06337BND
2020-02-1337729_20-06337AND
2020-02-1337729_20-06337ND
2020-02-1337729_20-06335BND
2020-02-1337729_20-06335ND
2020-05-1337729_20-198421.60 ppb
2020-05-1337729_20-198431.19 ppb
2020-08-1037729_20-33768ND
2020-08-1037729_20-33770ND
2020-11-1637729_20-49940ND
2020-11-1637729_20-49941ND
2021-02-1737729_21-069761.000 ppb
2021-02-1737729_21-069781.000 ppb
2021-05-1937729_21-202752.22 ppb
2021-05-1937729_21-202762.30 ppb
2021-08-1137729_21-345183.44 ppb
2021-08-1137729_21-345253.61 ppb
2021-12-0837729_21-5473110.5 ppb
2021-12-0837729_21-5473211.8 ppb
2022-02-0937729_22-061161.54 ppb
2022-02-0937729_22-061171.40 ppb
2022-05-0937729_22-20432ND
2022-05-0937729_22-20433ND
2022-08-1037729_22-378967.37 ppb
2022-08-1037729_22-378997.77 ppb
2022-11-0937729_22-5520710.1 ppb
2022-11-0937729_22-5520811.4 ppb
2023-02-0837729_23-06888ND
2023-02-0837729_23-06889ND
2023-05-1037729_23-240371.55 ppb
2023-05-1037729_23-24040ND
2023-08-0937729_23-441191.08 ppb
2023-08-0937729_23-441211.13 ppb
2023-11-0837729_23-636337.50 ppb
2023-11-0837729_23-636347.50 ppb