State Regulations

• Statute: Act 43 of 1984 – Safe Drinking Water Act
• Regulation: Title 25 Chapter 109 – Safe Drinking Water
• DEP Bureau of Safe Drinking Water

• Statute: Act 166 of 1978 – Flood Plain Management Act
• Regulation: Title 25 Chapter 106 – Floodplain Management
• PEMA Floodplain Management

• Statute: Act 394 of 1937 – Clean Streams Law
• Regulation: Title 25 Chapter 16 – Water Quality Toxics Management Strategy
• Regulation: Title 25 Chapter 91 – Water Resources General Provisions
• Regulation: Title Chapter 93 – Water Quality Standards
• Regulation: Title 25 Chapter 96 – Water Quality Standards Implementation
• Regulation: Title 25 Chapter 105 – Dam Safety and Waterway Management
• Regulation: Title 25 Chapter 110 – Water Resource Planning
• DEP Bureau of Clean Water, Water Quality

• Statute: Act 167 of 1978 – Storm Water Management Act
  • Pennsylvania enacted the Stormwater Management Act (Act 167) in 1978 in an effort to prevent and mitigate the effects of accelerated stormwater runoff.  Act 167 requires counties to create and implement watershed-based or county-based stormwater management plans.  Additionally, municipalities are required to adopt and enforce ordinances to regulate stormwater impacts of development and redevelopment in accordance with the county plans.
  • DEP Act 167 Information
  • Act 167 Plans by county in Southwestern Pennsylvania
• Regulation: Title 25 Chapter 102  – Erosion and Sediment Control
  • DEP – Erosion and Sediment Control Program Manual
• Regulation: Title 25 Chapter 111 – Stormwater Management – Grants and Reimbursement
• Regulation: Title 25 Chapter 92a – National Pollutant Discharge Elimination System Permitting, Monitoring, and Compliance
• DEP Stormwater Management

How PA Stormwater Regulations Fit Together:

• In 2002, DEP released the “Comprehensive Stormwater Management Policy” to ensure consistency amongst the various stormwater policies.  Additionally, DEP updated its Model Ordinance so that it can be used both for Act 167 and MS4 related activities.  Per DEP, this Model Ordinance will be used in the following ways: as a template for developing municipal stormwater management ordinances in watershed stormwater management plans prepared under the Pennsylvania Stormwater Management Act (1978 Act 167); as a model ordinance for enactment or amendment of ordinances by municipalities designated as urbanized under the federal NPDES Phase II rule (i.e. MS4 Municipalities); and, as a template by any other municipality engaged in preparation and enactment or amendment of a stormwater management ordinance.
• Enactment of the Model Ordinance establishes municipal authority to administer, regulate, and enforce proper implementation and maintenance of stormwater management Best Management Practices (BMPs) and design standards such as the ones presented in the Pennsylvania Stormwater Best Management Practices Manual.
• Fitting these various regulations together is explained at Stormwater PA.