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Cost Share Programs - Agricultural Cost Share Program (ACSP)


Fertigation Backlow Prevention


A combination of devices (valves, gauges, injectors, drains, etc.) to safeguard water sources from contamination by fertilizers used during the irrigation of agricultural crops.  The practice is intended to modify or improve fertilizer injection systems with components necessary to prevent backflow or siphoning of contaminants into the water supply thereby improving and protecting the state’s waters.


Maintenance Period 10 years
BMP Units Each
Required Effects
  • Acres affected
JAA/NRCS Standards
  • ENG - 441 - Irrigation System, Microirrigation
  • ENG - 449 - Irrigation Water Management
  • ENG - 430 - Irrigation Pipeline
  • ASAE EP409.1 MAR1989 (R2013) Safety Devices for Chemigation.
Cost Information
  • Average cost (75% or 90%)
CS2 Reference Materials
  • NC-ACSP 11 Signature Page
  • Map with BMP location, fields and roads
Additional Spot-check Requirements None

ACSP Policy Summary

Design Standards


Additional Information

  • ASAE EP409.1 MAR1989 (R2013) Safety Devices for Chemigation



NCDA&CS Division of Soil & Water Conservation, Vernon Cox, Director
Mailing Address: 1614 Mail Service Center, Raleigh NC 27699-1614
Physical Address: 216 West Jones Street, Raleigh North Carolina 27603
Phone: 919.707.3770

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