Nondegradation Determinations & Mixing Zones - Federal Statutes & Rules
Clean Water Act
Statute: 33 U.S.C. Section 1251, et seq.
Regulations: 50 CFR, Part 131, Section 12,
Antidegradation Policy
Water Quality Information
- About Water Quality Info
- Advisory Councils
- Ground Water Who's Who
- Laws and Rules
- Public Notices
- Subject/Contact Search
- Water Quality Planning
- 303d List
- 319 Grant Program
- Clean Water Act Info Center (CWAIC)
- Coal Bed Methane
- Information Management and Technical Services (IMTS)
- Nonpoint Source
- Quality Assurance Program
- Standards/Classification
- TMDL
- Water Quality Monitoring & Assessment
- Water Related Publications
- DEQ Environmental Assessments
- WQ Discharge Permits EAs
- WQ Circulars
- WQ Planning Bureau Library
- Technical & Financial Assistance
- Public Drinking Water Supply
- Source Water Protection
- State Revolving Fund
- Drinking Water SRF
- Water Pollution Control SRF
- Wetland Conservation
- Other Water Quality Links
- Permitting & Compliance
- Planning, Prevention & Assistance
- Nondegradation Determinations & Mixing Zones
- Staff Contact:
Eric Regensburger
(406) 444-6714
- Circular WQB-7, Montana Numeric Water Quality Standards
Nutrient Reducing Waste -water Systems (Level 2)
- List of Systems
- Scoring Sheet
- AdvanTex Approval
- Eliminite Approval
- International Wastewater Systems Approval
- Santec Approval
- Bio-Microbics Approval
- HDR Engineering Activated Sludge/BNR Approval
- HDR Engineering Activated Sludge/BNR Membrane Filtration Approval (2)
- International Wastewater Systems Approval (2)
- Norweco Approval
- Fluidyne ISAM Approval
- Quanics Approval
- SepticNET Approval
- Jet Approval
- AdvanTex AXRT Approval
- Northwest Water Systems 2400 Approval
- Northwest Water systems 7500 Approval
- SeptiTech Approval
