Cumberland City Low Water Main Impact Analysis


What happens when a major water line breaks? Wilmot’s triple bottom line analysis and economic impact analysis helped Nashville’s Metro Water Services find out.


With Nashville’s booming economy, making updates to the water distribution system on the East side of the city imperative. In response, Metro Water Services planned upgrades to the distribution system and built the Cumberland City Low transmission water main. This transmission water main provides redundancy in the distribution system, preventing possible service disruptions for hundreds of residents and businesses.

Wilmot’s Role

Wilmot was commissioned with calculating the benefits of this major investment for the local economy. A triple bottom line analysis of the social, environmental, and economic impacts included the following:

  • Resiliency through a redundant water line

  • Avoided congestion during construction

  • Air pollutants and greenhouse gas emissions from reduced congestion during construction

  • Savings through accelerated design and construction

Additionally, Wilmot evaluated the economic impact of capital spending on the project as represented by its contribution to the gross regional product, jobs supported and tax collection.


  • $73.4M in added wealth to the local economy

  • $1.3M in wasted time and fuel avoided due to the accelerated project schedule

  • $46,000 in additional social and environmental benefits


Metro Water Services

Nashville, TN


  • Municipal

  • Water/Wastewater


  • Triple bottom line cost benefit analysis

  • Economic impact analysis