Water Quality  
  Groundwater and Wells
  Sedimentation and Erosion Control
  Septic Systems and Wastewater Management
  Stormwater and Floodplain Management
  Wake Soil and Water Conservation District
  Water Restrictions and Conservation  
print  |  email

Technical Assistance


Wake County's Well, Wastewater and Development Division offers technical assistance to those designing septic and wastewater systems. Using the links below, you will find documents that provide you with this assistance. Should you have any questions, you can contact any of the following staff members:

Everette Lynn     Supervisor                          919-856-7461
Steve Bristow     Environmental Engineer         919-856-7432
Brett Martin        Environmental Engineer         919-856-7463
Everett Coates   Environmental Engineer          919-856-8380

Select from the following topics:
Subdivision Submission & Review
Pressure Manifold & LPP Design
Type IV & V System Operation and Maintenance
Pressure Manifold & LPP Design
Web Links of Interest



Subdivision Submission & Review
1. Certification of review by licensed soil scientist for existing structure with respect to recombination of property lines
2. Certification of review by licensed soil scientist
3. Certification of review by licensed soil scientist for lots utilizing NC DENR Non Discharge systems
4. Certification granted by Environmental Services in conjunction with issuance of improvement permit(s) on lot(s)
5. Certification granted by Environmental Services for existing structure with respect to recombination of property lines on lot(s)
6. Checklist of items to be submitted by licensed soil scientist for subdivision review
7. Example Language for Sewage Disposal Easements (in association with recording of plat)

Please follow this link to Wake County Planning Department for more information on zoning and subdivision issues.

List of Planning Department staff

back to top


Pressure Manifold & LPP Design
1. Wastewater disposal system design policies
2. System design preferences and considerations for private sector submittal
3. Checklist for LPP and pressure manifold design submissions with application for permit
4. Pressure manifold design template
5. Tap chart template
6. Low pressure pipe (LPP) design template
7. LPP design template (manual data entry)
8. Sample LTAR calculations for varied length line pressure manifolds
9. Friction loss chart
10. Flow rate chart for holes drilled in PVC pipe
11. Flow rate as a function of pressure head and hole diameter in drilled PVC
12. LPP pipeline size and volume
13. Pressure manifold tap size flow chart
14. 1/2-inch schedule 80 pvc manifold diagram
15. 1/2-inch schedule 40 pvc manifold diagram
16. 3/4-inch schedule 80 pvc manifold diagram
17. 3/4-inch schedule 40 pvc manifold diagram
18. Interceptor drain diagram
19. Diversion swale diagram (conventional drainlines)
20. Diversion swale diagram (LPP drainlines)


back to top


Type IV & V System Operation and Maintenance
1. Individual LPP monitoring form
2. Individual LPP monitoring form template
3. Large system monitoring form
4. Large system monitoring form template
5. Alternative sewage disposal system maintenance schedule: Pressure manifold
6. Alternative sewage disposal system maintenance schedule: Pressure manifold with pretreatment
7. Alternative sewage disposal system maintenance schedule: Pressure manifold with alternate fields
8. Alternative sewage disposal system maintenance schedule: Low pressure pipe
9. Alternative sewage disposal system maintenance schedule: Low pressure pipe with pretreatment
10. Alternative sewage disposal system maintenance schedule: Drip irrigation with pretreatment
11. Alternative sewage disposal system maintenance schedule: Drip irrigation with pretreatment (Grade II operators license required)
12. Alternative sewage disposal system maintenance schedule: Warranty Systems
13. Alternative sewage disposal system maintenance schedule: Disposal System utilizing Off-Site Easement
14. Alternative sewage disposal system maintenance schedule: Repair Disposal System Only utilizing Off-Site Easement
15. Protection of wastewater disposal areas
16. Wake County Homeowner Septic System Maintenance Guide
17. Certified Subsurface Wastewater Operator List
18. Sample Maintenance and Inspection Agreement

Please check here for next Subsurface Wastewater System Operator Training School.

back to top


Pressure Manifold & LPP Inspections
1. Pressure manifold minimum inspection points
2. Control panel minimum requirements
3. Construction sequence for At Grade septic system
4. Alternative/innovative septic system letter
5. Pump tank volumes and gallons per inch information
6. Septic tank diagram
7. Pump tank diagram

back to top


Web Links of Interest

back to top