Know Your Environment. Protect Your Health.

Chloroform

Ruston Water System

Chloroform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Chloroform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Read More.

In addition to tap water disinfection, chloroform pollution in the environment also comes from industrial discharges from pulp and paper mills, and from urban wastewater effluent. Human studies show that chloroform damages the kidneys, liver and central nervous system. In animals, chloroform causes infertility, birth defects and cancer.

Click here to read more about disinfection byproducts.

 

128

Samples

0

Samples exceeding legal limit (MCL)

118

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.64 ppb3230ND - 3.70 ppb
20192.06 ppb3228ND - 9.90 ppb
20202.02 ppb16160.700 ppb - 3.50 ppb
20212.19 ppb16160.630 ppb - 4.30 ppb
20222.50 ppb16160.580 ppb - 4.80 ppb
20232.55 ppb16160.460 ppb - 6.50 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.4 ppb

The EWG Health Guideline of 0.4 ppb for chloroform was 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 and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-11353684060012.00 ppb
2018-01-11353684060022.10 ppb
2018-01-11353684060030.660 ppb
2018-01-11353684060041.40 ppb
2018-01-11353684060012.00 ppb
2018-01-11353684060022.10 ppb
2018-01-11353684060030.660 ppb
2018-01-11353684060041.40 ppb
2018-04-12353862900013.30 ppb
2018-04-12353862900022.10 ppb
2018-04-12353862900030.700 ppb
2018-04-12353862900040.990 ppb
2018-04-12353862900013.30 ppb
2018-04-12353862900022.10 ppb
2018-04-12353862900030.700 ppb
2018-04-12353862900040.990 ppb
2018-07-06354027880012.40 ppb
2018-07-06354027880022.00 ppb
2018-07-0635402788003ND
2018-07-06354027880042.30 ppb
2018-07-06354027880012.40 ppb
2018-07-06354027880022.00 ppb
2018-07-0635402788003ND
2018-07-06354027880042.30 ppb
2018-10-04354225380013.70 ppb
2018-10-04354225380020.400 ppb
2018-10-04354225380030.510 ppb
2018-10-04354225380041.60 ppb
2018-10-04354225380013.70 ppb
2018-10-04354225380020.400 ppb
2018-10-04354225380030.510 ppb
2018-10-04354225380041.60 ppb
2019-01-04354402640011.40 ppb
2019-01-04354402640023.00 ppb
2019-01-04354402640030.670 ppb
2019-01-04354402640041.90 ppb
2019-01-04354402640011.40 ppb
2019-01-04354402640023.00 ppb
2019-01-04354402640030.670 ppb
2019-01-04354402640041.90 ppb
2019-04-04354597400013.30 ppb
2019-04-0435459740002ND
2019-04-0435459740003ND
2019-04-04354597400041.90 ppb
2019-04-04354597400013.30 ppb
2019-04-0435459740002ND
2019-04-0435459740003ND
2019-04-04354597400041.90 ppb
2019-07-18354835050019.90 ppb
2019-07-18354835050020.810 ppb
2019-07-18354835050030.830 ppb
2019-07-18354835050042.10 ppb
2019-07-18354835050019.90 ppb
2019-07-18354835050020.810 ppb
2019-07-18354835050030.830 ppb
2019-07-18354835050042.10 ppb
2019-10-15355062910013.00 ppb
2019-10-15355062910022.00 ppb
2019-10-15355062910030.290 ppb
2019-10-15355062910041.80 ppb
2019-10-15355062910013.00 ppb
2019-10-15355062910022.00 ppb
2019-10-15355062910030.290 ppb
2019-10-15355062910041.80 ppb
2020-01-17355251800012.90 ppb
2020-01-17355251800021.60 ppb
2020-01-17355251800030.880 ppb
2020-01-17355251800040.930 ppb
2020-04-14355445940013.50 ppb
2020-04-14355445940022.70 ppb
2020-04-14355445940030.700 ppb
2020-04-14355445940042.00 ppb
2020-07-23355657400013.10 ppb
2020-07-23355657400023.20 ppb
2020-07-23355657400030.730 ppb
2020-07-23355657400042.50 ppb
2020-10-22355876350012.00 ppb
2020-10-22355876350023.30 ppb
2020-10-22355876350030.730 ppb
2020-10-22355876350041.50 ppb
2021-01-26356077150013.10 ppb
2021-01-26356077150020.840 ppb
2021-01-26356077150030.800 ppb
2021-01-26356077150041.70 ppb
2021-04-08356251050011.80 ppb
2021-04-08356251050023.20 ppb
2021-04-08356251050031.10 ppb
2021-04-08356251050043.00 ppb
2021-07-15356485300012.50 ppb
2021-07-15356485300024.30 ppb
2021-07-15356485300032.00 ppb
2021-07-15356485300040.840 ppb
2021-10-08356690290013.00 ppb
2021-10-08356690290024.30 ppb
2021-10-08356690290030.630 ppb
2021-10-08356690290042.00 ppb
2022-01-07356891160012.50 ppb
2022-01-07356891160020.770 ppb
2022-01-07356891160032.80 ppb
2022-01-07356891160044.00 ppb
2022-04-07357096820013.50 ppb
2022-04-07357096820022.90 ppb
2022-04-07357096820030.720 ppb
2022-04-07357096820042.40 ppb
2022-07-15357327280012.50 ppb
2022-07-15357327280024.20 ppb
2022-07-15357327280030.580 ppb
2022-07-15357327280042.60 ppb
2022-10-14357537200012.00 ppb
2022-10-14357537200024.80 ppb
2022-10-14357537200030.790 ppb
2022-10-14357537200042.90 ppb
2023-01-06357710020012.70 ppb
2023-01-06357710020022.20 ppb
2023-01-06357710020030.810 ppb
2023-01-06357710020042.00 ppb
2023-04-05357909000013.30 ppb
2023-04-05357909000020.460 ppb
2023-04-05357909000033.30 ppb
2023-04-05357909000042.60 ppb
2023-07-21358150710012.20 ppb
2023-07-21358150710023.40 ppb
2023-07-21358150710031.30 ppb
2023-07-21358150710043.10 ppb
2023-10-05358328340012.70 ppb
2023-10-05358328340026.50 ppb
2023-10-05358328340031.20 ppb
2023-10-05358328340043.10 ppb