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Commercial Sewage Systems



Commercial systems in quantities of less than 10,000 gallons of sewage per day are regulated by the Environmental Health Division. Commercial systems with a flow of less than 1,000 gallons per day may be approved in accordance with the CMDHD Sanitary Code. Systems that fall between 1,000 and 10,000 gallons per day may be required to submit engineered plans and follow the Michigan Criteria for Subsurface Disposal.

Commercial systems often have to accommodate either a very low flow, such as a small office, or a very high output, such as a large restaurant or apartment complex. Generally, commercial systems have stronger waste than residential septic systems. This often requires special treatment of the sewage. 

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