Official Government Website

Guidance

Agency guidance documents include written documents intended to guide agency actions affecting the rights or interests of people or groups outside the agency (Idaho Code § 67-5250(2)).  

Other policy documents are intended to guide internal matters within the agency and are not posted online. 

A Memorandum of Understanding (MOU) is a legally nonbinding agreement between two or more parties that outlines the terms and details of a mutual understanding or agreement, noting each party’s requirements and responsibilities. 

ProgramTypeDocument(s)
Agency-wideProtocolCommunication Protocol Between DEQ and BCEH Regarding Risks to Human Health From Environmental Contaminants
Agency-widePolicyCreative Assets Policy PS24-01
Agency-widePolicyDeveloping Guidance Documents Policy PS25-06
Agency-wideManual Enforcement Procedures Manual
Agency-widePolicyLogo Clothing and Field and Safety Gear Policy PS22-03
Agency-wideAgreementMemorandum of Agreement Between DEQ and BCEH Regarding Risks to Human Health From Environmental Contaminants (also see DEQ-BCEH protocol)
Agency-wideMemorandumMemorandum of Understanding Between DEQ and Idaho Dairymen's Association, Inc.
Agency-wideMemorandum Memorandum of Understanding Between DEQ and Idaho’s Public Health Districts
Agency-wideMemorandum Memorandum of Understanding Between the Idaho Department of Environmental Quality and the British Columbia Ministry of Water, Land, and Air Protection
Agency-widePolicyMobile Devices Policy PS22-01
Agency-widePolicyPeer Review Policy PS25-09
Agency-widePolicyPolicy Statement Development and Maintenance PS25-05
Agency-widePolicyPolicy Statement for Social Media PS23-02
Agency-widePolicyPublic Records Requests Policy PS23-06
Agency-widePolicyQuality Management Policy PS21-03
Agency-widePolicyRecords Management Policy PS23-07
Agency-widePolicySafety Policy PS23-01
Agency-widePolicySuccession and Delegation of Authority Policy PS21-04
Air QualityGuidance A Guide to Visible Emissions Evaluations
Air QualityPolicyAir Quality Administrative Penalties Policy PS25-04
Air QualityGuidance Air Quality in Idaho: Supplemental Fugitive Dust Control Information
Air QualityGuidance Crop Residue Burning Operating Guide
Air QualityGuidance Dust, Fugitive: Prevention and Control Plan
Air QualityGuidance Emissions Data Hierarchy Guidance
Air QualityGuidance Guidance for the Remediation of Petroleum-Contaminated Media
Air QualityGuidance Guideline for Performing Air Quality Impact Analyses
Air QualityGuidance Interpreting the Word “Addressed” in Subsection 210.20.
Air QualityGuidance Modeling Guidance
Air QualityPolicyPolicy on Reviewing a Request for Institution with Sensitive Population Status for the Crop Residue Burning Program PM10-03
Air QualityManualProcedures Manual for Air Pollution Control
Air QualityManual Source Test Guidance Manual
Drinking WaterGuidance After the Flood: Protecting Your Drinking Water
Drinking WaterGuidance Choosing an Environmental Consultant
Drinking WaterMemorandumClarification of Interim Compliance Requirements for the Drinking Water Lead and Copper Rule Revisions
Drinking WaterGuidance Demonstrating Technical, Financial, and Managerial Capacity in New Public Water Systems
Drinking WaterPolicyDetermining Interest Rate on Loans from the Water Pollution Control and Drinking Water Loan Accounts Policy PS23-08
Drinking WaterFact Sheet Drinking Water Cross-Connection Control Programs
Drinking WaterGuidance Drinking Water Monitoring Waiver Guidance
Drinking WaterPolicyDrinking Water Penalty Policy PS22-02
Drinking WaterGuidanceDrinking Water Separation and Setback Design Guidance
Drinking WaterGuidance Drinking water, submersible pumps, and mercury seals: A potential problem
Drinking WaterGuidanceGrant and Loans Customer Handbook
Drinking WaterGuidance Guidance for Actions to be Taken Following Drinking Water System Depressurization
Drinking WaterGuidance Guidance for Determining Equalization Water Storage for Public Water Systems
Drinking WaterGuidance Guidance for Handling Waste Residuals Resulting from Drinking Water Treatment
Drinking WaterGuidance Guidance for New Source Water Testing Procedures for Public Drinking Water Systems
Drinking WaterGuidance Guidance for Public Water System Disposal of Water from Construction, Maintenance, and Operations
Drinking WaterGuidance Guidance to Determine Continual Operational Problems Necessitating Submittal of an Operation and Maintenance Manual
Drinking WaterGuidance How to Hire an Engineer for Public Water System and Wastewater System Design or Modification
Drinking WaterGuidance Idaho’s Initial Monitoring Requirements for New Public Drinking Water Sources
Drinking WaterGuidance Implementation Guidance for the Drinking Water Program – Ground Water Rule
Drinking WaterGuidance Implementation Guidance for the Filter Backwash Recycling Rule
Drinking WaterGuidance Implementation Guidance for the Interim Enhanced Surface Water Treatment Rule
Drinking WaterGuidance Implementation Guidance for the Long-Term 2 Enhanced Surface Water Treatment Rule
Drinking WaterGuidance Implementation Guidance for the Long-Term One Enhanced Surface Water Treatment Rule
Drinking WaterGuidance Implementation Guidance for the Stage 1 Disinfectants and Disinfection By-Products Rule
Drinking WaterGuidance Implementation Guidance for the Stage 2 Disinfectants and Disinfection By-Products Rule
Drinking WaterMemorandumMemorandum of Understanding Between DEQ and Bureau of Labs
Drinking WaterMemorandumMemorandum: Implementation of IDAPA 58.01.08.552.01.b.v Waiving Requirement to Keep Static Pressure in Distribution System Below 80 psi
Drinking WaterGuidancePoint of Use Guidance
Drinking WaterGuidance Procedure for Determining Ground Water Under the Direct Influence of Surface Water (GWUDI)
Drinking WaterGuidance Protecting Drinking Water Sources in Idaho
Drinking WaterGuidance Recommendations for Hiring a Contract Operator: For Idaho Public Drinking Water and Public Wastewater Systems
Drinking WaterFact Sheet Revised Total Coliform Rule: Level 1 & Level 2 Assessments and Corrective Actions
Drinking WaterFact Sheet Revised Total Coliform Rule: Repeat Monitoring Requirements for Small Systems
Drinking WaterFact Sheet Revised Total Coliform Rule: Requirements for Seasonal Systems
Drinking WaterFact Sheet Revised Total Coliform Rule: Requirements for Small Systems on Monthly Monitoring
Drinking WaterFact Sheet Revised Total Coliform Rule: Requirements for Small Systems on Quarterly Monitoring
Drinking WaterGuidance Revised Total Coliform Rule: Sample Instructions
Drinking WaterGuidance Revised Total Coliform Rule: Seasonal Start-Up Procedures
Drinking WaterGuidanceSlow Sand Filter Guidance for Authorizing Service after Scraping, Resanding, or Reopening
Drinking WaterGuidance Surface Water Treatment Rule Compliance Guidance
Drinking Water / WastewaterGuidanceGuidance for Hiring a Contract Operator - Drinking Water/Wastewater
Drinking Water / WastewaterMemorandumMemorandum of Understanding between Department of Environmental Quality and Division of Occupational and Professional Licenses
Grants and LoansAgreementOperational agreement - Management of the Clean Water State Revolving Fund Program (March 2018)
Grants and LoansAgreementOperational agreement – Drinking Water State Revolving Fund Loan Program (March 2018)
Ground WaterGuidance Guidance for Developing a Ground Water Quality Monitoring Program for Managed Recharge Projects by Land Application
Ground WaterAgreement Idaho Ground Water Protection Interagency Cooperative Agreement between Idaho DEQ, Idaho Department of Water Resources, Idaho State Department of Agriculture, Idaho Soil and Water Conservation Commission, Idaho Public Health Districts, and Idaho Department of Health and Welfare
Ground WaterPolicy Policy for Addressing Degraded Ground Water Quality Areas
Ground WaterGuidance Statistical Guidance for Determining Background Ground Water Quality and Degradation
Hazardous WasteManualHazardous Waste Enforcement Procedures Manual
IPDESLetter EPA Letter of Idaho Pollutant Discharge Elimination System Program Authorization and CROMERR Approval, E. Scott Pruitt, June 5, 2018
IPDESLetter EPA Letter to DEQ Finding Idaho Pollutant Discharge Elimination System Program Application Submission Complete, Dennis J. McLerran, September 3, 2016
IPDESGuidance Idaho Pollutant Discharge Elimination System Application Program Description 2016
IPDESLetter Idaho Pollutant Discharge Elimination System Application, 2017 Cover Letter
IPDESLetter Idaho Pollutant Discharge Elimination System Application, Attorney General’s Signed Certification
IPDESLetter Idaho Pollutant Discharge Elimination System Application, Governor’s Letter
IPDESAgreement Idaho Pollutant Discharge Elimination System Application, Memorandum of Agreement (MOA) with EPA
IPDESLetter Idaho Pollutant Discharge Elimination System Application, Program Description
IPDESGuidance Idaho Pollutant Discharge Elimination System Compliance Monitoring Strategy
IPDESGuidance Idaho Pollutant Discharge Elimination System Compliance Monitoring Strategy
IPDESGuidance Idaho Pollutant Discharge Elimination System Designation Criteria and Selection Process for Small MS4s
IPDESGuidance Idaho Pollutant Discharge Elimination System Effluent Limit Development Guidance
IPDESGuidance Idaho Pollutant Discharge Elimination System Enforcement Response Guide
IPDESGuidance Idaho Pollutant Discharge Elimination System Industrial User Survey Guidance
IPDESMemorandum Idaho Pollutant Discharge Elimination System MOU with Idaho State Department of Agriculture (ISDA)
IPDESGuidance Idaho Pollutant Discharge Elimination System Public Participation in the Permitting Process
IPDESGuidance Idaho Pollutant Discharge Elimination System Technical Support Document Reasonable Potential Analysis Workbook
IPDESGuidance Idaho Pollutant Discharge Elimination System Tribal Participation Process
IPDESGuidance Idaho Pollutant Discharge Elimination System User’s Guide to Permitting and Compliance Volume 2—Publicly Owned Treatment Works
IPDESGuidance Idaho Pollutant Discharge Elimination System User’s Guide to Permitting and Compliance Volume 3—Non-POTW
IPDESGuidance Idaho Pollutant Discharge Elimination System User’s Guide to Permitting and Compliance Volume 4—General Permits Excluding Storm Water
IPDESGuidance Idaho Pollutant Discharge Elimination System User’s Guide to Permitting and Compliance Volume 5—Storm Water
IPDESGuidance Idaho Pollutant Discharge Elimination System User’s Guide to Permitting and Compliance Volume 6—Sewage Sludge (Biosolids)
IPDESGuidancedaho Pollutant Discharge Elimination System Effluent Limit Development Guidance (Supplemental)
IPDESMemorandumIdaho Pollutant Discharge Elimination System Application, Memorandum of Agreement (MOA) with Idaho Transportation Department
IPDESGuidance IPDES User’s Guide to Permitting and Compliance Volume 1—General Information
IPDESMemorandum

Memorandum of Understanding between DEQ and the City of Boise

IPDESMemorandum Memorandum of Understanding for DEQ IPDES and US EPA – Development and Maintenance of the NPDES Electronic Reporting Tool NeT for ID Aquaculture
Recycled Water / ReuseGuidance Guidance for Reclamation and Reuse of Municipal and Industrial Wastewater
Recycled Water / ReuseGuidanceReuse Permit Writer’s Manual
Solid WasteMemorandum Between the Idaho State Department of Agriculture and IDEQ regarding regulations of composting facilities
Solid WasteGuidance Guidance for Siting, Design, and Operation of Nonhazardous Solid Waste Impoundments in Idaho
Solid WasteGuidance Guidance for Siting, Design, and Operations of Non-Municipal Solid Waste Landfills in Idaho
Storm WaterGuidanceIdaho Catalog of Storm Water Best Management Practices
Surface WaterPolicy 401 Certification – ACOE 60 Day Deadline Policy Directive
Surface WaterMemorandum Application of Water Quality Standards to Non-Perennial Waters
Surface WaterGuidance Concepts and Recommendations for Using the “Natural Conditions” Provisions of the Idaho Water Quality Standards
Surface WaterMemorandum Continuous Temperature Monitoring Requirements in NPDES Permits
Surface WaterPolicyAssessing Salmonid Spawning in Idaho Waterbodies
Surface WaterGuidance DEQ Procedures for Decontamination of Monitoring Equipment
Surface WaterGuidanceGuidance for Interpreting Antidegradation Policy for Unassessed, Ephemeral, and Intermittent Streams
Surface WaterGuidance Guidance for the Use of Wood Preservatives
Surface WaterGuidance Guide to Selection of Sediment Targets for Use in Idaho TMDLs
Surface WaterGuidance Idaho Antidegradation Implementation Procedures
Surface WaterGuidance Idaho Mixing Zone Implementation Guidance
Surface WaterGuidance Idaho Waste Management Guidelines for Aquaculture Operations
Surface WaterGuidance Implementation Guidance for the Idaho Copper Criteria for Aquatic Life: Using the Biotic Ligand Model (BLM)
Surface WaterGuidance Implementation Guidance for the Idaho Mercury Water Quality Criteria
Surface WaterGuidanceImplementation Guidance for the Idaho Selenium Criteria for Aquatic Life
Surface WaterGuidance Implementation of The 2016 Idaho Mixing Zone Guidance
Surface WaterMemorandum Memorandum of Understanding (MOU) Implementing the Nonpoint Source Water Quality Program in Idaho
Surface WaterMemorandumMemorandum of Agreement between Idaho Department of Environmental Quality and Idaho Department of Lands for Shared Stewardship Collaboration
Surface WaterGuidance Section 401 Water Quality Certification Guidance
Surface WaterGuidance State of Idaho Guidance for Development of Total Maximum Daily Loads
Surface WaterMemorandum Synching TMDLs with the Integrated Report
Surface WaterGuidance Use Attainability Analysis Guidance
Surface WaterGuidance Water Body Assessment Guidance 3rd Edition
Surface WaterPolicy Water Quality Administrative Penalty Guidance
Surface WaterProtocol Water Quality Monitoring Protocols for Placement and Retrieval of Temperature Data Loggers in Idaho Streams
Surface WaterGuidance Water Quality Trading Guidance
WastewaterGuidance Biosolids Beneficial Use and Disposal Flowchart
WastewaterMemorandum Delegation of Authority for Issuing Waivers for the sections of the Idaho Rules for Public Drinking Water Systems, Wastewater Rules, and Recycled Water Rules
WastewaterMemorandumDetermination of Reasonably Accessible Sewer
WastewaterGuidance EPA Biosolids Guidance
WastewaterGuidance Guidance for Evaluating Wastewater Lagoon Seepage Rates
WastewaterGuidance Guidance for Land Application of Municipal Biosolids
WastewaterGuidance

Level 1 Nutrient-Pathogen Evaluation Mass-Balance Spreadsheet

WastewaterMemorandumSeparation Distances from Subsurface Sewage Disposal Systems to an In-Ground Pool (2013)
WastewaterGuidance Nutrient-Pathogen Evaluation Program for On-Site Wastewater Treatment Systems
WastewaterGuidance Pile Sampling White Paper
WastewaterMemorandumRegulation of Byproducts and Wastewater from Beef Cattle Animal Feeding Operations
WastewaterMemorandumRegulation of Byproducts and Wastewater from Cultured Dairy Production
WastewaterMemorandum Relative to Oil and Gas Conservation, Water Quality, Waste Facility Plans, and Air Quality
WastewaterGuidance Rule Interpretation for Land Application of Bagged Biosolids that Meet Class A Exceptional Quality Requirements
WastewaterGuidance Seepage Test Spreadsheet for Electronic Method
WastewaterGuidance Seepage Test Spreadsheet for Manual Method or Hook Gauge
WastewaterMemorandumSeptic Tank Manholes
WastewaterGuidance Technical Guidance Manual
WastewaterMemorandumUse of Wastewater Holding Tanks
WastewaterGuidance Visual Sample Plan (VSP) software
WastewaterGuidance Wastewater Lagoon Seepage Test Statistical Review
WastewaterManual Wastewater Land Application Operators Study and Reference Manual
WastewaterMemorandum County, State, and Federal Department/Agency Exemption from Installer’s Registration Permit
WastewaterGuidance Guidance for the Land Application of Domestic Septage WW
WastewaterMemorandum Large Soil Absorption System Ground Water Constituent Monitoring (2016)
WastewaterMemorandumAuthority to Revoke a Subsurface Sewage Permit (1995)
WastewaterMemorandumFailing Subsurface Sewage Disposal System
WastewaterMemorandumGuidance on Recording Waypoints from Subsurface Sewage Disposal Drainfields (2018)
WastewaterMemorandumIndividual Subsurface Sewage Disposal Site Evaluations in Wetlands (1998)
WastewaterMemorandumLarge Soil Absorption Systems
WastewaterMemorandumPermit Requirements for Increased Flows at Single Family Dwellings
WastewaterMemorandumPermitting Requirements for Federal and State Agencies
WastewaterMemorandumRecommended Language for all SSD Permits (2021)
WastewaterMemorandumRevocation of a Subsurface Sewage Disposal Installer or Septic Tank Pumper Permit (2014)
WastewaterMemorandumDEQ RV Park On-Site Wastewater Disposal Systems
WastewaterMemorandumSeptic Tank Pumper Permit Verbiage and Permit Application/Renewal Dates
WastewaterMemorandumSeptic Tanks and Dosing Chamber Uses (2014)
WastewaterMemorandumSplit Flows (IDAPA 58.01.03.007.15) (2014)
WastewaterMemorandumSubsurface Sewage Disposal Permit Application Supplement for Non-Domestic Wastewater Use, Review, and Approval (2016)
WastewaterMemorandumUse of Multi-Compartment Septic Tanks as Individual Residence Septic Tank Effluent Pump Stations (2015)
WastewaterMemorandumUse of Multiple Septic Tanks in Series
WastewaterMemorandumVariance to IDAPA 58.01.03 Process and Inclusion of the Technical Guidance Committee (2014)
WastewaterMemorandumEngineering Design Review for Subsurface Sewage Disposal Systems (2015)
WastewaterMemorandumSubsurface Sewage Disposal Permits that Span Multiple Properties (Easements)
Water QualityAgreementAgreement for funding and management for Coeur d'Alene Lake Management Plan
Water QualityPolicy Dispute Resolution Advisory Panel for Plan and Specification Engineering Disputes Policy PS20-08
Water QualityGuidanceImplementation Guidance for Idaho’s Human Health Water Quality Arsenic Criteria
Water QualityAgreement Interagency agreement between DEQ and the Idaho Division of Building Safety – Plumbing Bureau
Water QualityMemorandumClean Water Act Section 401 Water Quality Certification Scope Directive
Water QualityMemorandumMemorandum of Understanding Between DEQ and The Idaho Rural Water Association (IRWA)
Water QualityMemorandum2025 Memorandum of Understanding Water Quality Division Environmental Performance Partnership Agreement (WQ PPA)
WM&RPolicyBunker Hill Land Transfer Policy PS25-01
WM&RPolicyBunker Hill Mining and Metallurgical Complex Waste Acceptance Criteria
WM&RPolicyBunker Hill Superfund Site Analysis of Remedial Actions and Recommended Risk Management Approaches
WM&RPolicyBunker Hill Superfund Site Final Repository Cap Design Standards at East Mission Flats and Big Creek Repositories
WM&RPolicyBunker Hill Superfund Site Institutional Controls Program, Barrier Design Criteria, and Permitting Requirements
WM&RPolicyBunker Hill Superfund Site Limited Use Repositories Policy
WM&RPolicyBunker Hill Superfund Site Residential and Commercial Carpeting Disposal Policy
WM&RPolicyBunker Hill Superfund Site Responsibilities for Repair of Impacted Barriers from Small Scale and Localized Floods or Natural Disasters
WM&RPolicyBunker Hill Superfund Site Soil and Dust Sample Sieving Policy
WM&RPolicyBunker Hill Superfund Site Waste Acceptance, Treatment, and Disposal Requirements for Petroleum Contaminated Soils under the Institutional Controls Program
WM&RPolicyInnocent Landowner Policy
WM&RAgreement Memorandum of Agreement between EPA and DEQ regarding Resource Conservation and Recovery Act (RCRA)
WM&RAgreement Memorandum of Agreement between EPA and DEQ regarding Resource Conservation and Recovery Act
WM&RAgreement Memorandum of Agreement between EPA and DEQ Resource Conservation and Recovery Act
WM&RPolicyGroundwater Monitoring for Small Exempt Municipal Solid Waste Landfills Policy 25-02
WM&RPolicyHazardous Waste Management Act Civil Penalties Policy PS25-08
WM&RPolicyLeaking Underground Storage Tank (LUST) Program Cost Recovery Policy PS23-05
WM&RPolicyLeaking Underground Storage Tank (LUST) Program Penalty Policy PS23-04
WM&RMemorandum Mountain Home Airforce Base and DEQ MOU
WM&RPolicyOwners of Property Containing Contamination from Off-site Sources Policy PS25-07
WM&RPolicyBunker Hill Superfund Site, Operable Unit 3 Residential and Community Mean Soil Lead Levels Policy
WM&RPolicy PS20-12 Hazardous Waste Management Act Civil Penalties
WM&RPolicySupplemental Environmental Projects Policy PS25-03
WM&RPolicyUnderground Storage Tank (UST) Program Penalty PS23-03
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