Official Austin Texas Resource for Onsite Water Reuse Systems
Wahaso Onsite Water Reuse for NEW Urban Water Regulations
Onsite Water Reuse with Wahaso
Capture. Treat. Reuse. Comply.
Future-ready buildings are built with water reuse in mind. Wahaso helps you stay ahead of the curve with scalable systems that meet regulatory requirements and maximize water efficiency.
Why Onsite Water Reuse Matters
Overview
Many cities—like Austin, Texas—are leading the way in mandating onsite reuse systems for large buildings. Why?
Because water is precious. Capturing and reusing rainwater, AC condensate, graywater, or even foundation drain water helps reduce strain on potable water supplies, save utility costs, and build resilience in the face of drought and growth.
With updated codes like Austin’s Chapter 15-13 (effective April 1, 2024), new construction projects must now plan for non‑potable water use in toilets, cooling towers, irrigation, and more.
View AustinTexas.gov page for Onsite Water Reuse Systems: here
Which Buildings Must Use Onsite Water Reuse
—and Why
End‑to‑End Process
—by Wahaso
How Onsite Water Reuse Works
- Collect – Harvest rainwater, condensate, graywater, or approved sources
- Treat – Apply filtration, UV, or other disinfection to meet non‑potable standards
- Distribute – Support irrigation, cooling towers, toilets, laundry, etc.
- Monitor & Report – Track usage and support permitting with data tools
Real‑World Impact
Austin’s ordinance, effective April 1, 2024, is just one example of a growing trend in urban water regulations. By planning for reuse early, Wahaso clients avoid permitting delays, gain faster approvals, and show environmental leadership. Our projects span campuses, corporate and mixed-use developments—helping clients save water, comply, and scale sustainably.
Ready to Get Started?
Wahaso makes onsite water reuse simple, scalable, and sustainable. We provide everything—from water balance modeling to full system commissioning and long-term support.
Start with a free project evaluation.
Call us: (800) 580-5350
Fill out our Scoping Form to begin.
A Guide to Water Harvesting Systems for Commercial Buildings & White Paper Cost-Benefit Analysis of Water Harvesting
Enter name and email to download resource.
Get Wahaso's White Paper & eBook Guide
↓ Get a formal analysis and quote. ↓
Onsite Water Reuse Systems
Wahaso Articles
LEED v4 Compliance Made Easy: Cooling Tower Water Use Reduction
To Help buildings achieve LEED v4 compliance, Wahaso has developed the CT Recover cooling tower blowdown recycling system.
Maximizing Cooling Tower Efficiency: Wahaso’s Water Conservation Solutions
Cooling tower efficiency is a critical concern for building owners, facility engineers, and maintenance staff tasked with optimizing the performance of HVAC systems.
Regulatory Standards for Water Harvesting in Commercial Buildings
Water harvesting in commercial buildings is becoming increasingly essential as businesses strive to adopt sustainable practices. Regulatory standards play a crucial role…
Rethinking Detention Tank Sizing with Reuse and Active Drawdown
In many stormwater designs, detention tanks are sized under the most conservative assumption: the tank does nothing during the storm.
Unlocking Retrofit Potential: A Framework for Water Reuse in Existing Buildings
While new construction projects often dominate the conversation around water harvesting, the built environment tells a different story.
Legionella Control in Cooling Towers: Manage Risk and Push Higher Cycles of Concentration
Cooling towers sit at the intersection of building health, energy performance, and water efficiency. They also represent one of the most common environmental sources of Legionella risk. Legionnaires’ disease outbreaks are frequently traced back to poorly maintained towers where warm, stagnant water, nutrients, and biofilms allow bacteria to thrive.
Since 2004
Wahaso Mission
Our mission at Wahaso is to help municipalities and commercial property owners reduce the impact of their buildings on the environment through innovative and sustainable water practices.
Call For A Free Estimate
Phone: 800-580-5350
Wahaso
Water Harvesting Solutions
Members of the U.S. Green Building Council (USGBC) www.usgbc.org
View Certifications