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Treatment Methods Used in Concord's Drinking Water
Deaconess Treatment Facility.jpg

Sodium Hypochlorite
Provides disinfection against germs and bacteria
Potassium Hydroxide
Provides pH adjustment.  Works as a corrosion inhibitor.  Protects distribution system and customer’s home plumbing system from corrosion.
Zinc Polyphosphate  
Works as a sequestering agent to suspend iron and manganese particles.  Also a corrosion inhibitor to stabilize metal surfaces of iron and copper pipelines.
Sodium Fluoride  
Reduces rate of tooth decay, especially in children
Ozone Gas
Provides disinfection of surface water against viruses and bacteria.  this strong oxidant is effective in removing organic material that causes taste & odor.
LayneOx(TM) Pressure Filtration
Utilizes sodium hypochlorite to pre-oxidize iron and manganese and then remove it through filtration and adsorption.
Ultraviolet Light (UV)
UV is an effective primary disinfectant which inactivates viruses and eradicates bacteria without the use of chemicals.

If you have any questions or concerns, please contact:

Melissa Simoncini
Senior Environmental and Regulatory Coordinator
Town of Concord Water and Sewer Division
135 Keyes Road, Concord, MA 01742


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