• Corporate HQ, NY
  • Melville, NY
  • Iselin, NJ
  • Ossining, NY
  • Mount Laurel, NJ

Total Residual Chlorine Management Program


New York City<br style='line-height:2px'>New York City Department of Environmental Protection

HAKS is a member of the project team evaluating chlorine residuals and developing treatment strategies for the New York City Department of Environmental Protection’s $47 million total residual chlorine (TRC) program. The objective of the program is to comply with the New York State Department of Environmental Conservation’s more stringent TRC State Pollutant Discharge Elimination System standards. The stricter limits attempt to reduce the whole effluent toxicity to protect aquatic life receiving discharges of the treated wastewater. The current permitted effluent TRC limit for each WWTP is 2 mg/L; the new limit for the plants will be .53 mg/L.

The program involves upgrade of disinfection and/or installation of dechlorination facilities at the Port Richmond, Newtown Creek, North River and Coney Island wastewater treatment plants.

Chlorination helps reduce the risk of potential microbiological contaminants or pathogens. In order to maintain the optimal concentration level for disinfection purposes, NYCDEP adds chlorine at two locations before water enters the city's distribution system. Additional chlorine is added at specific locations in New York City.