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Last updated: October 30, 2026. Figures come from the official sources linked in each section; rules change, so confirm with the agency before you rely on them.
People often search "St. George water restrictions," and for good reason: water rules shape what you can build and plant here. This is a plain summary of the Washington County Water Conservancy District's published standards.
Standard rules for new landscaping
The district's Water Efficiency Standards apply to new development and landscape projects using water from the district or its city partners (WCWCD Water Efficiency Standards):
- Single-family lawns are limited to 8% of the lot or 2,500 sq. ft., whichever is less. Lots under 7,500 sq. ft. may have up to 600 sq. ft.
- Non-lawn plants must use drip irrigation, and automated systems need a WaterSense or similar weather-based smart controller.
- Planting beds need mulch, and commercial lawn is prohibited except for active recreation areas.
- Where these standards conflict with a city or HOA rule, the stricter conservation rule applies.
Ultra Water Efficiency Standards
Newer developments served directly by the district, or where a city has adopted them, follow stricter "Ultra" standards, designed for homes using about 0.39 acre-feet a year (WCWCD Ultra standards):
- No irrigated lawn on private lots, and up to 2,000 sq. ft. of irrigated landscaping per home.
- No spray irrigation; drip only.
- No private swimming pools (community pools are allowed); covered spas up to 100 sq. ft. are allowed.
- Water use over 8,000 gallons a month carries surcharges.
What this means for buyers
- If a pool or lawn matters to you, ask which standards apply to the subdivision before you buy a lot or new build.
- Older homes were built under earlier rules, but future landscape rehabs follow current standards.
- Check the HOA CC&Rs too.
Water and growth come up often in public meetings; see the Ivins Meetings hub and Housing Growth in Washington County. Browse Washington County homes.
Want a home with a pool or a yard for the grandkids? I'll help you find neighborhoods where that's allowed. Reach out to Robert at Robert@OwnUtah.com or 801-737-3333.
Frequently asked questions
Can I have a lawn in a new home in St. George?
Under the standard district rules, single-family lawns are limited to 8% of the lot or 2,500 sq. ft., whichever is less. In developments using the Ultra standards, irrigated lawn on private lots is prohibited.
Can new homes in Washington County, Utah have a pool?
It depends on which standards apply. Under the district's Ultra Water Efficiency Standards, private pools are prohibited, while community pools and covered spas up to 100 sq. ft. are allowed.
Who sets water rules in Washington County, Utah?
The Washington County Water Conservancy District publishes the regional standards, and cities and HOAs may add stricter rules.