Wastewater from industrial customers is different than wastewater from most homes and businesses. As a result, industrial flow requires additional controls to ensure potential pollutants don’t disrupt the normal operation of SD1’s wastewater treatment plants.
Learn more about our Industrial Pretreatment Program.
Dental Amalgam Program
In compliance with the Clean Water Act, the United States Environmental Protection Agency has adopted Dental Effluent Guidelines to reduce discharges of mercury and other metals from dental offices into publicly owned treatment works. The rule will only regulate dental offices that place or remove amalgam.Link to page
Fats, Oils and Gas Program
When residents and businesses pour fats, oils and grease (FOG) down sinks or floor drains, these substances can build up in pipes. This can ruin plumbing and prevent wastewater from moving through SD1’s sanitary sewer pipes to a treatment plant for cleaning.Link to page
SD1 permits waste haulers who transport wastewater to an SD1 treatment plant by tanker truck rather than through underground pipes.Link to page
Industrial Pretreatment ProgramLink to page
Industrial Rates, Fees & Special Meters
Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs) are monitored by SD1’s Industrial Pretreatment Program. These industries are charged an annual permit fee.Link to page
A special discharge, also known as an unusual or one-time discharge, is wastewater from an industrial user that does not fit into another category. All special discharges must be approved by SD1’s Industrial Pretreatment Department before they are released into the sanitary sewer system.Link to page