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Williamson County, TX Landscaping Rules: Rainwater Harvesting (2026)

Few Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

HOA ban
Void under §202.007
Rain barrels
Expressly protected
HOA may set
Screening, color rules
Sales tax
Exempt for equipment

Summary

Rainwater harvesting is protected statewide. A Williamson County HOA cannot prohibit rain barrels or a rainwater collection system, and the county encourages it. Property Code Section 202.007 voids any covenant that bans them.

City-specific rules exist: Cedar Park has its own rainwater harvesting rules that differ from Williamson County's county-level regulations. If you live in Cedar Park, check the city-specific page instead.

A property owners' association may not include or enforce a provision in a dedicatory instrument that prohibits or restricts a property owner from: ... (2) installing rain barrels or a rainwater harvesting system... A provision that violates Subsection (a) is void.

Full Breakdown

Texas Property Code Section 202.007 bars a property owners' association from enforcing any deed-restriction provision that stops an owner from installing rain barrels or a rainwater harvesting system, and it voids such provisions outright. An HOA may still require, for aesthetics, that a barrel not be visible from the street or a neighboring lot and that it match the home. Rainwater harvesting equipment for residential use is also exempt from state sales tax. Williamson County itself imposes no barrier to collecting rain for landscape irrigation.

Violations & Fines

None from the county. An HOA covenant that flatly bans rain barrels is void and unenforceable under Section 202.007. Owners may still be asked to screen a barrel from street view.

Frequently Asked Questions

Can my HOA stop me installing a rain barrel?
No. Property Code Section 202.007 voids any covenant prohibiting rain barrels or rainwater harvesting. The HOA may only require reasonable screening or color to match your home.
Does Williamson County restrict rainwater collection?
No. The county places no limit on harvesting rainwater for irrigation, and Texas exempts residential rainwater equipment from sales tax.

Sources & Official References

Other rules in Williamson County

All Williamson County rules

Texas rules heatmap·Compare Williamson County to another location·View the Texas landscaping rules overview

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Rainwater Harvesting in Cities Across Williamson County