On-Site Sewage (Septic) Systems & Water Wells
Resources
- EH Land Use Inspectors Phone and E-mail List
- Qualified Professional Site Evaluators Contact List
- Site Evaluator Selection - Helpful Tips
- Fee Schedule
Land Use Table of Contents
- Regulations
- Report Forms
- County Policies
- Application Forms
- Graywater Design
- Educational Brochures
- Web Links
- Inspection Forms
- Graphics
- Calculation Checksheets
Regulations
- Mendocino County Well Ordinance
- Special Permit Areas:
- Land Division Requirements Form #26.09
- On-Site Waste Treatment and Disposal Practices (Basin Plan)
- Guidelines for the Issuance of Waivers
- Soil Evaluation for On-Site Sewage Disposal
- UPC, Private Sewage Disposal Systems (as modified and adopted by Mendocino County Board of Supervisors - September 8, 1992)
- Land Development Requirements: Minimum Standards for On-Site Sewage Systems Form #42.28
- Non-Standard On-Site Sewage Disposal Systems Program
- Mendocino County Coastal Groundwater Development Guidelines
- Mendocino County Code - On-Site Sewage Systems and Water Wells
Site Evaluation Report Forms
- Report Format Form #42.04
- Report Summary
- Waiver Statement
- Profile Instructions
- Profile Description
- Percolation Test
- Percolation Instructions
- Percolation Test Graphic
- Hydrometer Test Worksheet
- Soil Suitability Chart
- Plot Plan Instructions
- Sample Plot Plan with Setbacks
- Large Parcel Plot Plan Example
- Detailed Site Plan
- Vicinity Map Requirements
- Water Quantity Form
- Site Evaluation Report Fee Check Sheet
County Policies
- Well Permits for Drilling within Water Districts
- Bedroom Definition Policy
- Discovery of Poor Soil Conditions at Construction
- Expiration of Site Evaluation Reports
- Family Care Units
- Groundwater Intercept Drains
- Guidelines for Issuing Repair Permits
- Guidelines for Second Residential Units
- Issuance of Sewage Disposal Permits for Bedroom Additions
- Linear Loading Rate in Shallow Soil on Greater Than 20 Percent Slope
- Mendocino Coastal Groundwater Development Guidelines
- New Use of Old Unknown Existing Systems
- Non Standard Sewage System Inspections
- Onsite Sewage System Relocations
- Operating Permits for Existing Sewage Systems
- Percolation Testing
- Second Residential Unit (SRU) Coastal Water Production Testing
- Second Residential Unit (SRU) Inland Water Testing
- Septic or Off-site Well Easement and Boundary Line Adjustment Guidelines
- Septic System Repair-Replacement Policy
- Site Evaluation Report Review Procedure
- Stakeholder Participation in Policy Formation
- Wet Weather Testing of Soils
Application Forms
- Wet Season Construction Authorization
- How to Apply for a Sewage Disposal Permit
- On-Site Sewage System
- Service Request
- Water Well
- Water Well District Notice
- Transfer of Ownership for Land Use Sites
Graywater Design
- CA Graywater System Requirements
- Sample Operation and Maintenance Manual
- Graywater Brochure
- Graywater System Guidelines
Educational Brochures
- Water Saving Tips
- How to Choose a Septic System Installer/Contractor
- How to Choose a Septic System Designer/Engineer
- Groundwater Protection and Your Septic System (US EPA)
- So Now You Own a Septic Tank (US EPA)
- Care and Feeding of Your Septic Tank (US EPA)
- Sample Plot Plan with Setbacks
- Disinfection of individual Water Systems
Web Links
- Choosing a Septic System
- US EPA National Small Flows Clearinghouse
- US EPA Septic Systems
- Septic Yellow Pages
Inspection Forms
- Sewage System Design Check-sheet
- Certificate of Completion
- Non-Standard Monitoring
- Float Controlled Pump Chamber
- Timer Controlled Pump Chamber
- Disposal Trench Liquid Levels sheet
- Disposal Trench Liquid Levels Graphic
- Sewage Pump Monitoring sheet
- Monitoring Well Water Level sheet
- Monitoring Well Graphic
- On-Site Field Review Form
Graphics
- Septic Tank and Gravity Leach Trenches
- In-Ground Concrete Septic Tank
- Above Grade Concrete Septic Tank
- Standard In-Ground Leach Trench
- Shallow In-Ground Leach Trench
- Plastic Chamber In-Ground Leach Trench
- Leach Trench on Contour
- Total Dynamic Head - Example
- Detailed Site Plan - Example
- Large Parcel Plot Plan - Example
- Vicinity Map - Example
- Percolation Test Graphic
- Disposal Trench Liquid Levels
Design Calculation Check Sheets
- Lab Soil Analysis Procedures
- Pressure Distribution Check-sheet
- Pressure Distribution Hydraulics
- Dosing Hydraulics Check-sheet
- Rainwater Harvesting
- Scouring Velocity and Scouring Cycle Length
— Free software is required to read PDFs.