GPM: Gallons per minute
GPF: Gallons per flush
     *Dual-flush GPF calculation: average of two reduced flushes and one full flush
MaP: Maximum performance

Allowable use: Up to 2,000 gallons per day

Sources: Showers, bathtubs, bathroom and laundry sinks, clothes washing machines

Uses (Code Sec. 5-151): Toilet and urinal flushing

Other requirements per Graywater Design Criteria:

• NSF/ANSI 350 certified treatment and disinfection system required
• Potable backup system and dual plumbing
• Backflow prevention and cross-connection control

What are the water conservation standards?
In July 2009, City Council adopted new landscape and irrigation standards for water conservation. They are included in the City's Land Use Code, Section 3.2.1. The purpose is to promote water efficiency through landscapes and irrigation systems that are designed and installed well.

What projects are subject to the standards?
The standards apply to all projects within the city limits that are required to submit a landscape plan (commercial, multi-family and HOA common areas). They do not apply to single-family homes. Duplexes are also included when they are part of a planned unit development. The standards apply to common areas of single-family developments, but do not apply to single-family residences. Irrigation plans are required for developments within the City of Fort Collins.

What do I have to do to comply with the standards?

• Landscape Plan: Submittal Requirements for Project Development Plan
• Landscape Plan: Submittal Requirements for Final Plan Review
• Irrigation Plan: Submittal Requirements

For Landscape Plans

• Submittal Requirements for Project Development Plan
• Submittal Requirements for Final Plan Review
• Landscape Plan Water Use Table
• Recommended Plant List

For Irrigation Plans

• Submittal Requirements
• Irrigation Plan Water Use Table
• Smart Controller Data Input Table
• Pressure Calculation Worksheet
• Tap Size vs. Turf Area Table
• Maximum Flow Table
• Example Irrigation Plan

For Performance Audits

• City's Approved Auditor List
• Performance Audit Guidelines
• Performance Audit Form
• Zone Evaluation Form
• Catch Can Form

Email IrrigationDR@fcgov.com for more information.

GPM: Gallons per minute
GPF: Gallons per flush
     *Dual-flush GPF calculation: average of two reduced flushes and one full flush
MaP: Maximum performance

Plumbing Compactness

• Building Guide

Allowable use: 

• Single-family: Up to 400 gallons per day
• Multi-family: Up to 2,000 gallons per day

Sources: Showers, bathtubs, bathroom and laundry sinks, clothes washing machines

Uses (Code Sec. 5-151): Toilet and urinal flushing

Other requirements per Graywater Design Criteria:

• NSF/ANSI 350 certified treatment and disinfection system required
• Potable backup system and dual plumbing
• Backflow prevention and cross-connection control

There are no residential irrigation standards, but we encourage residents to save water and money by:

• Getting a sprinkler checkup
• Xeriscaping
• Practicing water-wise lawn care