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['Water Programs']
['Stormwater']
11/25/2025
State Info
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The Rhode Island Pollutant Discharge Elimination System (RIPDES), Pretreatment Program, Priority Pollutant Monitoring program currently oversees permit compliance for 29 major discharges and approximately 130 minor discharges.
The Pretreatment Program is necessary to prevent industrial discharges from interfering with the operation of municipal wastewater treatment facilities and/or causing the facility to violate its discharge limits. DEM provides oversight of 14 approved local pretreatment programs administered by publicly owned wastewater treatment facilities
In addition, this program conducts the priority pollutant monitoring on an annual basis at all municipal wastewater treatment facilities.
