Can You Collect Rainwater in Colorado? 2026 Laws Explained for Homeowners

Can You Collect Rainwater in Colorado? 2026 Laws Explained for Homeowners

• If you live in Douglas County or Elbert County, you might be wondering:
• 👉 “Can I legally collect rainwater on my property?”
• The answer is yes—but with limitations.
•  
• Colorado has historically had strict water laws, and while rainwater collection is now allowed, it’s still regulated.
• Here’s exactly what you need to know in 2026.

Why Rainwater Laws Are Strict in Colorado

• Colorado follows a prior appropriation water rights system, meaning:
• 👉 Water belongs to whoever has legal rights to it first
• Even rainwater is technically part of that system.
• Because of this, rainwater collection has been regulated to avoid impacting downstream water rights.

What Is Legal in Colorado (2026)

• Homeowners are allowed to collect rainwater—but only under specific conditions.

Basic Rules:

• ✔ You can collect rainwater from your roof
• ✔ You can store it in up to two rain barrels
• ✔ Total storage is limited to 110 gallons
• ✔ Water must be used on the same property

What Can You Use Rainwater For?

Collected rainwater can be used for:

• Outdoor irrigation
• Watering gardens
• Landscaping

👉 It is not approved for drinking water unless treated and permitted through separate systems.

What Is NOT Allowed

Here’s where many homeowners get it wrong.

• ✘ You cannot install large-scale collection systems (without special approval)
• ✘ You cannot exceed the 110-gallon limit
• ✘ You cannot use it for unrestricted indoor use
• ✘ You cannot sell or transfer collected water

Do You Need a Permit?

For standard rain barrels:

• 👉 No permit is required

However, larger or more complex systems may require:

• Engineering
• Water rights review
• State approval

Rainwater Collection in Elbert vs Douglas County

Elbert County

• More rural properties
• More interest in water independence
• Still subject to state limits

Douglas County

• More suburban homes
• Rain barrels more commonly used for landscaping
• HOA rules may apply

HOA Considerations

Even though rainwater collection is legal, some HOAs may:

• Restrict barrel placement
• Require screening or design approval

Always check HOA guidelines before installing.

Is Rainwater Collection Worth It?

For most homeowners:

• ✔ Helps reduce water usage
• ✔ Good for landscaping
• ✔ Low-cost setup

But:

👉 It is NOT a replacement for a well or water system

Common Misunderstandings

• “I can collect unlimited rainwater” → ❌ False
• “I can use it inside my home” → ❌ Restricted
• “It replaces a well” → ❌ It does not

Why This Matters for Buyers

If you're buying property in Douglas or Elbert County:

• Rainwater collection is a nice supplement
• But it does NOT solve primary water needs
• You still need a well or municipal water source

Rainwater collection in Colorado is legal—but limited.

• 👉 Up to 110 gallons
• 👉 Outdoor use only
• 👉 Must stay on your property

It’s a helpful tool—but not a primary water solution.

If you have questions about water rights, wells, land purchases, or rural living in Douglas or Elbert County, I’m happy to walk through the full picture so you can make a confident decision.

Marjorie Engle – Realtor

📞 303-881-2707

🌐 www.marjorieengle.com