Subtitle Env-Ws - Division of Water
- Chapter Env-Ws 200 - PROCEDURAL RULES - EXPIRED
- Chapter Env-Ws 300 - NEW HAMPSHIRE DRINKING WATER RULES
- Chapter Env-Ws 400 - PROTECTION OF STATE SURFACE WATERS
- Chapter Env-Ws 500 - RESERVED
- Chapter Env-Ws 600 - SELECTION OF CONSULTING ENGINEERS - (Redesignated to Env-Wq 600)
- Chapter Env-Ws 700 - STANDARDS OF DESIGN AND CONSTRUCTION FOR SEWERAGE AND WASTEWATER TREATMENT FACILITIES - (Redesignated to Env-Wq 700)
- Chapter Env-Ws 800 - SLUDGE MANAGEMENT - (Redesignated as Env-Wq 800)
- Chapter Env-Ws 900 - OPERATION OF SEWAGE AND WASTE TREATMENT SYSTEMS
- Chapter Env-Ws 1000 - SUBDIVISION AND INDIVIDUAL SEWAGE DISPOSAL SYSTEM DESIGN RULES - Redesignated as Env-Wq 1000
- Chapter Env-Ws 1100 - YOUTH RECREATION CAMPS
- Chapter Env-Ws 1200 - WINNIPESAUKEE RIVER BASIN PROGRAM - (Redesignated as Env-Wq 1200)
- Chapter Env-Ws 1300 - EXOTIC AQUATIC WEED CONTROL - (Redesignated as Env-Wq 1300)
- Chapter Env-Ws 1400 - SHORELAND PROTECTION (Redesignated as Env-Wq 1400)
- Chapter Env-Ws 1500 - Groundwater Discharge Permit and Registration - (Redesignated as Env-Wq 402)
- Chapter Env-Ws 1600 - SEPTAGE MANAGEMENT (Redesignated as Env-Wq 1600)
- Chapter Env-Ws 1700 - SURFACE WATER QUALITY REGULATIONS (Redesignated to Env-Wq 1700)
- Chapter Env-Ws 1800 - RIVERS MANAGEMENT AND PROTECTION PROGRAM (Redesignated to Env-Wq 1800)
- Chapter Env-Ws 1900 - RULES FOR THE PROTECTION OF INSTREAM FLOW ON DESIGNATED RIVERS - (Redesignated as Env-Wq 1900))
- Chapter Env-Ws 2000 - COASTAL PROGRAM GRANT RULES - (Redesignated as Env-Wq 2000)