GENERAL INFORMATION
The gaseous or liquid form of chlorine (CL2) is a water additive used by municipal water systems to control microbes. It is relatively inexpensive and has the lowest production and operating costs and longest history for large continuous disinfection operations. Chlorine is a powerful oxidant.
HEALTH EFFECTS
Some people who use water containing chlorine well in excess of the MRDL could experience irritating effects to their eyes and nose. Some people who drink water containing chlorine well in excess of the MRDL could experience stomach discomfort.
MRDL ADVISORY - ACTION IS RECOMMENDED
Chlorine levels were detected in your water sample to exceed the maximum residual disinfectant level (MRDL). MRDL's are non-enforceable goals based on the possible risk and exposure over a lifetime with an adequate margin of safety.
MRDL ADVISORY - ACTION IS OPTIONAL
Chlorine levels were detected in your water sample but do not exceed the maximum residual disinfectant level (MRDL). MRDL's are non-enforceable goals based on the possible risk and exposure over a lifetime with an adequate margin of safety.
WEBSITE RESOURCES
- USEPA - Water: Drinking Water Contaminants - Drinking Water Contaminants
- USEPA - Water: Basic Information about Regulated Drinking Water Contaminants - Basic Information about Disinfectants in Drinking Water: Chloramine, Chlorine and Chlorine Dioxide
- ATSDR - Toxic Substances Portal - Chlorine
FACT SHEETS
- ATSDR ToxFAQs Fact Sheet - Chlorine
- Water Systems Council - wellcare® information for you about Chlorine Disinfectants & Their Byproducts