Is Collecting Rainwater Legal in Wyoming? (2026)

RESTRICTED
Confidence: High

Partially — Collecting Rainwater is legal with restrictions in Wyoming as of 2026.

Key Restriction
Allowed for personal use; large-scale collection requires water rights
Penalty
No criminal penalty
Last Updated
2026-03-25
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Quick Answer

Wyoming regulates rainwater collection under its prior appropriation water rights system. Personal rainwater collection is allowed if it does not infringe on existing water rights, but large-scale collection or sale requires water rights permits under Wyoming Statutes §41-3-901.

What the Law Says

Rainwater harvesting for non-potable, outdoor applications is legal to practice in the State of Wyoming.

Wyoming Statutes Title 41 - Water
Category Details
Collection Rules Allowed for personal use; large-scale collection requires water rights.
Volume Limits & Permits Sale requires water rights permits.
Violation Penalties Violations can result in fines and enforcement actions under water rights laws.
Pending Legislation None known

Enforcement Reality

Charge Level
No criminal penalty
Enforcement Likelihood
Very low — no known recent cases
Common Triggers
N/A

Local Exceptions

None identified. State law applies uniformly across Wyoming. Local ordinances may still vary — check with your city or county government for any additional rules.

Bottom Line

Collecting Rainwater is legal with restrictions in Wyoming. This activity is permitted, but specific conditions apply. Violating those conditions can result in fines or criminal charges. Read the rules carefully and consult an attorney if unsure.

Wyoming vs. the Rest of the US

Across the US, collecting rainwater is fully legal in 30 states, restricted in 20, and illegal in 0. Wyoming falls in the RESTRICTED category.

View the full 50-state map →

Neighboring States

Laws change at state lines. Here is how bordering states compare on Collecting Rainwater:

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Frequently Asked Questions

Is collecting rainwater legal in Wyoming?
Partially — Collecting Rainwater is legal with restrictions in Wyoming as of 2026. Wyoming regulates rainwater collection under its prior appropriation water rights system. Personal rainwater collection is allowed if it does not infringe on existing water rights, but large-scale collection or sale requires water rights permits under Wyoming Statutes §41-3-901.
What are the restrictions on collecting rainwater in Wyoming?
Allowed for personal use; large-scale collection requires water rights.. Sale requires water rights permits.
Does the law on collecting rainwater change at the Wyoming border?
Yes. Collecting Rainwater is legal in neighboring South Dakota. Laws change at state lines — check each state individually before traveling.

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EH
Ethan Harper Independent Legal Researcher

Reviewed by cross-referencing the cited state statute against current legislative databases and regulatory publications.

Last reviewed: 2026-03-25 Method: Statute cross-reference

Sources & Verification

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Statute Summary
Rainwater harvesting for non-potable, outdoor applications is legal to practice in the State of Wyoming.
Verified: 2026-03-25 Reviewed by: Ethan Harper Method: Statute cross-reference Confidence: High

This page was reviewed by Ethan Harper by comparing the legal status against the cited state statute. AllowedHere is an informational resource and does not provide legal advice. Consult a licensed attorney for guidance specific to your situation.

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