Know Your Environment. Protect Your Health.

Chloroform

Slidell Water Supply

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.

 

132

Samples

0

Samples exceeding legal limit (MCL)

132

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.13 ppb32320.660 ppb - 1.80 ppb
20191.29 ppb32320.750 ppb - 1.80 ppb
20201.57 ppb16160.780 ppb - 2.80 ppb
20211.08 ppb16160.570 ppb - 2.50 ppb
20221.25 ppb16160.680 ppb - 2.20 ppb
20232.21 ppb20200.610 ppb - 7.50 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
2018-02-01353718590011.50 ppb
2018-02-01353718590021.60 ppb
2018-02-01353718590031.80 ppb
2018-02-01353718590040.860 ppb
2018-02-01353718590011.50 ppb
2018-02-01353718590021.60 ppb
2018-02-01353718590031.80 ppb
2018-02-01353718590040.860 ppb
2018-05-04353902800011.20 ppb
2018-05-04353902800021.20 ppb
2018-05-04353902800030.660 ppb
2018-05-04353902800040.810 ppb
2018-05-04353902800011.20 ppb
2018-05-04353902800021.20 ppb
2018-05-04353902800030.660 ppb
2018-05-04353902800040.810 ppb
2018-08-03354087570011.50 ppb
2018-08-03354087570021.40 ppb
2018-08-03354087570030.740 ppb
2018-08-03354087570040.750 ppb
2018-08-03354087570011.50 ppb
2018-08-03354087570021.40 ppb
2018-08-03354087570030.740 ppb
2018-08-03354087570040.750 ppb
2018-11-01354280540011.30 ppb
2018-11-01354280540021.40 ppb
2018-11-01354280540030.680 ppb
2018-11-01354280540040.730 ppb
2018-11-01354280540011.30 ppb
2018-11-01354280540021.40 ppb
2018-11-01354280540030.680 ppb
2018-11-01354280540040.730 ppb
2019-02-14354488460011.80 ppb
2019-02-14354488460021.80 ppb
2019-02-14354488460031.10 ppb
2019-02-14354488460040.930 ppb
2019-02-14354488460011.80 ppb
2019-02-14354488460021.80 ppb
2019-02-14354488460031.10 ppb
2019-02-14354488460040.930 ppb
2019-05-03354660760011.60 ppb
2019-05-03354660760021.20 ppb
2019-05-03354660760031.000 ppb
2019-05-03354660760041.50 ppb
2019-05-03354660760011.60 ppb
2019-05-03354660760021.20 ppb
2019-05-03354660760031.000 ppb
2019-05-03354660760041.50 ppb
2019-08-16354911120011.70 ppb
2019-08-16354911120021.50 ppb
2019-08-16354911120030.880 ppb
2019-08-16354911120040.880 ppb
2019-08-16354911120011.70 ppb
2019-08-16354911120021.50 ppb
2019-08-16354911120030.880 ppb
2019-08-16354911120040.880 ppb
2019-11-08355110660011.70 ppb
2019-11-08355110660021.40 ppb
2019-11-08355110660030.750 ppb
2019-11-08355110660040.820 ppb
2019-11-08355110660011.70 ppb
2019-11-08355110660021.40 ppb
2019-11-08355110660030.750 ppb
2019-11-08355110660040.820 ppb
2020-02-07355294990011.30 ppb
2020-02-07355294990021.30 ppb
2020-02-07355294990031.30 ppb
2020-02-07355294990041.30 ppb
2020-05-01355471520012.30 ppb
2020-05-01355471520022.10 ppb
2020-05-01355471520031.10 ppb
2020-05-01355471520041.20 ppb
2020-08-13355706930011.30 ppb
2020-08-13355706930020.780 ppb
2020-08-13355706930032.80 ppb
2020-08-13355706930042.50 ppb
2020-11-06355905230011.80 ppb
2020-11-06355905230022.00 ppb
2020-11-06355905230031.000 ppb
2020-11-06355905230041.000 ppb
2021-02-05356100080011.20 ppb
2021-02-05356100080021.10 ppb
2021-02-05356100080030.670 ppb
2021-02-05356100080040.870 ppb
2021-05-14356338740011.60 ppb
2021-05-14356338740021.70 ppb
2021-05-14356338740030.600 ppb
2021-05-14356338740040.730 ppb
2021-08-06356537940011.30 ppb
2021-08-06356537940022.50 ppb
2021-08-06356537940030.910 ppb
2021-08-06356537940040.800 ppb
2021-11-05356762810010.830 ppb
2021-11-05356762810021.30 ppb
2021-11-05356762810030.570 ppb
2021-11-05356762810040.600 ppb
2022-02-04356955740011.30 ppb
2022-02-04356955740021.20 ppb
2022-02-04356955740030.820 ppb
2022-02-04356955740040.790 ppb
2022-05-06357159300010.680 ppb
2022-05-06357159300021.10 ppb
2022-05-06357159300031.50 ppb
2022-05-06357159300041.50 ppb
2022-08-05357373450011.60 ppb
2022-08-05357373450021.50 ppb
2022-08-05357373450030.720 ppb
2022-08-05357373450040.870 ppb
2022-11-07357587260012.20 ppb
2022-11-07357587260022.10 ppb
2022-11-07357587260030.810 ppb
2022-11-07357587260041.30 ppb
2023-02-16357815500011.20 ppb
2023-02-16357815500021.30 ppb
2023-02-16357815500030.890 ppb
2023-02-27357824060010.940 ppb
2023-05-05357977870011.80 ppb
2023-05-05357977870021.80 ppb
2023-05-05357977870030.950 ppb
2023-05-05357977870040.740 ppb
2023-08-04358183630011.70 ppb
2023-08-04358183630022.00 ppb
2023-08-04358183630030.610 ppb
2023-08-04358183630041.60 ppb
2023-08-04358183630054.80 ppb
2023-08-04358183630061.90 ppb
2023-11-02358393430012.00 ppb
2023-11-02358393430022.20 ppb
2023-11-02358393430030.800 ppb
2023-11-02358393430042.70 ppb
2023-11-02358393430056.70 ppb
2023-11-02358393430067.50 ppb