New York University Skip to Content Skip to Search Skip to Navigation Skip to Sub Navigation

Water Quality

Title 15 of the Rules of the City of New York Section 19-07 governs the discharge of total silver halide process wastewater into public sewers based on the daily volume of total silver halide process wastewater discharged from any of NYU’s photography or x-ray facilities (<100 gallons/day).

EPA RCRA requires the safe management of hazardous waste. Silver-bearing wastes are currently considered RCRA hazardous for toxicity although this waste stream is deemed non-hazardous by stripping the silver from the effluent and therefore is not managed as RCRA hazardous waste.

The program applies to all NYU areas that have photo or x-ray processing units. The silver that collects in the fixer solution during photographic or X-ray film processing is toxic and cannot be discharged to the sewer. Therefore, silver recovery units have been installed at all NYU photo/x-ray processing locations.

Quick Links

NYU Footer