The leaders and staff of Duffield Associates recognize that water quality is the cornerstone issue for public health and safety in America’s future, and that assuring the supply of safe, clean drinking water and the effective cleaning and disposal of wastewater are two of the country’s most important infrastructure-quality issues.

Duffield Associates’ professionals bring a unique perspective and commitment to achieving excellence in win-win solutions in balancing needs, costs, community interests, etc., in achieving positive outcomes, and the firm has been honored for its work in the past.

Duffield Associates has proven to be an innovator in water and wastewater engineering on projects including collection, conveyance, treatment and disposal. Many of our wastewater treatment and disposal projects have included regulatory assistance including permitting, permit negotiations and TMDL legal work.

Typical projects have included:

  • Force mains
  • Gravity sewers
  • Hazardous waste site investigation and remediation
  • Sewage pumping stations
  • Sludge disposal
  • Solid waste disposal
  • Spray irrigation design management
  • Storm water collection, treatment, and disposal
  • Storm water permit negotiations
  • Storm water strategy development
  • Wastewater treatment facilities