If you're exploring the idea of buying land in Colorado, understanding your water rights is essential. One of the most common—and critical—questions buyers ask is: how much land do I need to drill a well?
Understanding the 35-Acre Rule
In Colorado, well permits are based on your intended water use and how much land you own. The 35-acre rule is a major milestone that determines which type of permit you may be eligible for.
Household-Use Only Well (Less Than 35 Acres)
Most parcels under 35 acres will qualify only for a household-use only well. These are restricted to indoor use:
- Drinking water
- Toilets, showers, sinks, and laundry
- No irrigation or livestock watering
This is common in smaller rural subdivisions or where water rights are limited.
Domestic Well Permit (35 Acres or More)
If you're purchasing 35 acres or more, you may qualify for a domestic well, which allows:
- All household indoor use
- Irrigation of up to one acre (garden, lawn, or trees)
- Watering of a limited number of livestock
3 Things to Check Before You Buy
- Get the Well Permit Number: It will show the type of well and allowed uses.
- Review the Well Log: This includes flow rate, well depth, and drilling history.
- Test the Water: For quality and reliability—especially in older systems.
You can verify and apply for well permits through the Colorado Division of Water Resources.
Related guides: Northern Colorado Land Guide | Larimer County | Weld County
