Washwater treatment

The Ottawa Rural Clean Water Program (ORCWP) provides funding for projects that protect surface water and groundwater quality. To find out more, please consult the program description.


  • Maximum grant: 50 per cent up to $5,000

Project Description:

Treatment systems for washwater from milkhouses, fruits and vegetables, and greenhouses.

Project Details:

Eligible projects include:

  • Washwater storage in an existing or proposed storage system if:
  • The storage meets Nutrient Management Act requirements.
  • Milkhouse parlour washwater directed to a treatment trench system must prevent the first rinse cycle from discharging to the treatment trench.
    • Washwater treatment via bio-filters or constructed wetlands.
    • Manure dewatering systems (e.g. flocculators)
    • Collection of leachate from the storage of a natural product such as agricultural silos only.
    • Modifications to greenhouse irrigation systems to recycle washwater or recover nutrients
    • Water conservation features may be funded provided other program standards are met

NOTE: Each applicant is responsible for ensuring that the project meets all legal requirements, including City by-laws, provincial and federal acts/regulations, and Conservation Authority permits/approvals.

Eligible Costs:

  • Permits and approvals
  • Purchased supplies and materials
  • Contract labour and professional fees.
  • Permanent transfer piping from the milkhouse parlour or processing facility to a suitable storage/treatment system
  • Permanent sump pumps plus all associated electrical connections
  • Reasonable in-kind contributions for applicant’s labour ($20/hr) and equipment ($50/hr) associated with the implementation of the proposed project

The Program reserves the right to limit the eligible amount for in-kind contributions based on the proposed project. Applicants must provide a detailed written accounting of all in-kind contributions when the application is submitted. In-kind costs associated with completing the application, project planning, supervision, or administration, are not eligible for funding.

Ineligible Costs:

  • Construction or installation of milkhouse parlours or processing structures
  • Repair and maintenance of existing piping or nutrient recovery systems
  • Portable sump pumps
  • Taxes

Other Complementary Grants Available:

  • Manure storage and treatment
  • Nutrient management/precision farming
  • Clean water diversion