22. The operator may treat municipal wastewater if the average annual flow of such water accounts for not more than 10% of the flow for which the treatment plant was designed.
The operator may also treat industrial wastewater and septic tank sludge. An authorization for such treatment must be obtained under the Environment Quality Act (chapter Q-2).
Despite the treatment of wastewater and sludge, the operator must comply with the standards prescribed in this Division.