ENV ENV 4.2 - Improve indoor and outdoor air quality.

Turbidity of City drinking water

This is a measure of the cleanliness of the City's drinking water as measured by the "cloudiness" or turbidity of the drinking water. The turbidity is consistently well below the 0.10 ntu benchmark, which itself is well below the State required benchmark of 0.30 ntu.

Residential Annual Water Demand in Gallons Per Capita Per Day

  • This is an annual metric and only reflects data through 2020 currently. 
  • Metric is typically updated in March. 
  • This measure reflects all billed residential water use (single-family, duplex, and multi-family rate codes). It does not, however, include any water used by commercial rate codes associated with residential properties (like irrigation accounts, club houses, pools, offices and other uses that typically have a commercial rate code). This metric is highly dependent on weather conditions. For example, we experienced a very cool, wet spring in 2019 than previous years. In 2020, this metric is reflective of complicated water use patterns that shifted due to more people working from home and water restrictions in response to fire, drought, and the Horsetooth Outlet Project. 
  • The AWWA National Water domestic per capita consumption benchmark from 2017 is about 61 gallons per person per day, which is notably lower than ours. This may be due to difference in housing stock and how irrigation is included/accounted for. 
Annual water demand as percent of firm yield

Mar-21 Status: There was no significant change to water supplies in 2020 from previous year and the Actual Demand in 2020 was less than 90% of the Target Firm Yield of Supplies (which is good).

  • This metric illustrates how well the Utilities Water Resources Division maintains a reliable water supply for the Utilities water service area customers.
  • The goal is to keep water supplies greater than the demands of the water service area customers.
  • Factors that increase the firm yield of Utilities water supplies include:
    • Acquiring additional water rights that can be used without water court action;
    • Going through water court process to allow Utilities to use certain previously acquired water rights;
    • Adding reservoir storage that allows for water to be stored during times of excess and used during times of shortage; and,
    • Adding reservoir storage that can meet return flow requirements downstream in order to allow for increased use of water supplies at the water treatment plant.
  • 2017 decrease in firm yield (from previous years) are a result of adjusted modeling assumptions that more accurately reflect conditions.
  • This metric is only updated annually in March.


Water quality complaints per 1,000 customers

The Utility recorded 18 total water quality complains for the year, which is 0.14 complaints per 1,000 customers. This is significantly lower than the highest performing AWWA benchmark of 5, and our internal target of 2.0

Overall Water Conservation Program Effectiveness (million gallons/year)

Analysis (as of April 2021):

  • Currently, this is an annual metric only reflecting data through 2020. 
  • Metric is typically updated in March. 
  • This metric includes the estimate water savings for most of the Water Conservation programs. This does not reflect water savings from passive activities like building codes. 
  • The value for 2020 is significantly higher than previous years because of increased water savings in new commericial landscape programs (Allotment Management Program and Xeriscape Incentive Program) and expansion and automation of the leak detection program. This number also includes reductions in water use due to water restrictions, which started on Oct 1 and lasted about one month in response to fire, drought, and the Horsetooth Outline Project. Savings from water restrictions alone account for 105 million gallons. While total savings are higher, some programs saw reductions in overall savings when compared to previous years. This can be explained due to shorter seasons and/or limited ability to implement due to COVID-19. Staff expects savings numbers in these programs reach pre-COVID levels as restrictions are safely lifted. 
  • This significant increase reflects the continued value-added of resources (staff members) added to the team in BFO 2017-18, specifically the two positions that focus on the commercial sector and landscape sector. 
  • This savings level reflects about 3% of overall treated water production in 2020 and is 234% increase in savings over the last 5 years (2016 - 2020).