Environmental Rules in St. George, UT (2026)
5 verified environmental rules for St. George, Utah, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
St. George requires a grading permit before disturbing one acre or more of land, backed by a state notice of intent and a city-approved storm water pollution prevention plan under chapter 9-14 of the city code.
St. George Grading & Storm Water Permits
Some RestrictionsSt. George City Code § 9-14-3
Every person shall obtain a grading permit for any land disturbance or grading activity on land of one (1) acre or more. B. Exemptions: The following activities are exempt from the permit requirement: 1. Any emergency activity that is immediately necessary for the protection of life, property, or natural resources. 2. Existing nursery and agricultural operations conducted as a permit...
Erosion Control
St. George requires a sediment and erosion control plan for any construction project disturbing one acre or more, or for smaller sites that are part of a larger common development plan, before it will issue a grading permit.
St. George Erosion & Sediment Control Plan Rule
Some RestrictionsSt. George City Code § 9-14-4(D)
The sediment and erosion control plan shall apply to construction projects disturbing one (1) acre or more, and to construction projects of less than one (1) acre that are part of a larger common plan of development or sale. The sediment and erosion control plan shall accurately describe the potential for soil erosion and sedimentation problems resulting from land disturbing/grading activity an...
Flood Zones
St. George requires an engineer-prepared flood hazard development permit for any construction in a FEMA special flood hazard area, plus minimum floor-elevation standards.
St. George Flood Hazard Area Rules
Some RestrictionsSt. George City Code § 10-13C-3
Flood hazard development permit application prepared by a registered professional engineer shall be submitted before construction or development begins within any area of special flood hazard. Application for a flood hazard permit shall be made on forms furnished by the city engineer or designee...
Vehicle Idling Restrictions
St. George has no citywide idling law. Its only idling rule bans vehicles from idling on neighborhood streets while waiting to drop off or pick up students at a private K-8 school sited in a designated landmark building in a residential zone.
St. George School Drop-Off Idling Ban
Light RestrictionsSt. George City Code § 10-17B-9(C)(4)
“Drop-off” and “pick-up” activities shall occur only within the designated on-site loading area identified on the approved site plan. Idling on adjacent neighborhood streets is prohibited. Staggered drop-off and pick-up times may be required to mitigate traffic impacts. 5. Traffic And Circulation: Applicants shall submit a traffic management plan showing specific “drop-off/pick-up” locatio...
Flood Elevation Requirements
St. George requires new residential construction in flood hazard areas to elevate the lowest floor at least two feet above base flood elevation, one foot more than the FEMA minimum required for commercial buildings.
St. George Flood Elevation & Freeboard Rules
Some RestrictionsSt. George City Code § 10-13C-4(F)
New construction and substantial improvement of any residential structure shall have the lowest floor (including basement) elevated to two feet (2') or more above the base flood elevation... Nonresidential Construction: New construction and substantial improvements of any commercial, industrial or other nonresidential structure shall either have the lowest floor, including basement, elevated to...
Looking for Washington County county-wide rules?
County ordinances apply to unincorporated areas and may supplement St. George city rules.
Environmental Rules in Washington County →