Learn how to design and build residential and commercial graywater systems compliant to Denver and Colorado regulations. The course is designed for people with basic plumbing, landscaping, or irrigation skills. You will learn about the concepts required to install graywater systems in the Denver area. There will be an optional exam and installation for people wishing to be certified and listed as Qualified Water Efficient Landscaper.
This course will focus on laundry to landscape installation while introducing you to several of the commercially available graywater packaged systems. It includes a visit a to local, operational graywater system at the Colorado State University Spur Campus Hydro building.
- Key Topics: Denver water sources, Sustainable landscape practices, Plants and products for graywater, Distribution field sizing, Collection Plumbing, Distribution to Landscape, Colorado and Denver graywater regulations and permitting, Future of graywater – indoor reuse systems
- Hands-on Requirement: Participants must participate in a graywater system installation to complete certification.
- Certification: To earn the QWEL Graywater certificate, you must complete the installation and pass the exam.
- Exam Date: October 22nd (In-person).
Qualified Water Efficient Landscaper (QWEL) training provides education on water efficient and sustainable landscape practices. QWEL is an EPA WaterSense labeled Professional Certification Program. Red Rocks Community College is the Professional Certifying Organization for these courses.
FEE:
Registration: $495
The full cost of this course is eligible for a rebate for individuals who live, work or attend higher education courses in Denver. Visit the Green Jobs Training Rebates webpage for more information.
QWEL Irrigation Audit Description
In order to obtain QWEL certification, individuals must complete an irrigation audit in addition to passing the QWEL exam.
The purpose of the audit is to assess how effective an irrigation system is at applying water to the landscape. Results used to develop an irrigation schedule for each hydrozone tested and to suggest system improvements.
Learning Objectives
- Understand the reasons for conducting an irrigation system audit
- Have a basic understanding of the terms ‘distribution uniformity’ and ‘irrigation efficiency’
- Have a basic understanding of the terms ‘precipitation rate’ and ‘matched precipitation rate’
- Know how to determine the precipitation rate
- Understand the tools required to conduct an irrigation system audit
- Understand how to conduct an irrigation system audit site evaluation
- Understand how to conduct an irrigation system audit tune-up
- Understand how to conduct an irrigation system audit test for overhead spray
- Understand how to conduct an irrigation system audit test for drip irrigation
Date – as needed
Location – provided by instructor
Fee - $95
The full cost of the course is eligible for a rebate for individuals who live or work in Denver through CASR's Green Jobs Training Rebates
Check back for more classes October 29, 2026!
