Best Practice

Step 3 Recognition Best Practice for Category A, B and C cities

Category A and B cities: implement this best practice by completing action 1 and one additional action.

Category C cities: implement this best practice by completing action 1.


Sustainable purchasing, also known as environmentally preferable purchasing (EPP), shifts city purchasing to procurement of goods and services that have a reduced effect on the natural environment and human health when compared to competing products and services that serve the same purpose. While life-cycle assessments offer the best metric for determining what is the most sustainable, product and service attributes are commonly used as a proxy, and include:

  • Increased energy efficiency
  • Reduced toxicity
  • Beneficial to indoor air quality
  • Water-conserving
  • Recycled-content
  • Minimized waste
  • Plant-based
  • Locally produced
  • Embodied energy/life-cycle greenhouse gas impact

Greenstep Advisor

Best Practice Advisor Photo

Melissa Peck, Sustainable Purchasing Specialist, MN Pollution Control Agency: 651/757-2343,,

Connection to State Policy


Major Benefit

  • Green purchasing standards, benefit calculators and more are available on the U.S EPA's greener products and services page. Benefits include cost, environmental and improved worker productivity and improved public health.
  • See benefit calculators for paper, electronics and ENERGY STAR-certified products.
  • Ductile iron pipe for drinking water mains has stronger walls allowing a larger inside diameter reducing friction and thus saving energy. According to St. Cloud’s Pumping Cost Study (July 2014), the city's use of ductile iron pipe (certified under the SMaRT standard ) results in an annual savings of $210,530 compared to competing pipe, measuring power cost, pump efficiency, and head loss.