Eagle Mountain, UT Environmental Rules: Stormwater Management (2026)
Key Facts
- Fee basis
- 1 ERU equals 4,000 sq ft impervious surface (13.75.070)
- Permit trigger
- 1+ acre land disturbance (EMMC 13.75.100)
- Also triggers permit
- Parking lots over one-tenth acre
- Waiver
- City engineer may waive in writing, no impact
- Penalty
- $50.00 to $5,000 per day (EMMC 13.75.170)
- Appeal
- Written appeal to city council within 15 days
Summary
Eagle Mountain charges a storm water utility fee on every developed parcel with impervious surface that contributes runoff, set under EMMC 13.75.070, and requires developers, property owners, and businesses to obtain a storm water permit from the city engineer before disturbing an acre or more of land, or less under specified conditions, per EMMC 13.75.100.
A storm water utility fee is imposed on each developed parcel of real property within the city with impervious surfaces that contribute runoff or benefit from the storm water system. ... ... A. Unless waived by the city engineer and public works director in writing because the city engineer determines there will be no impact to the city’s storm water system, every developer, property owner or business will be required to obtain a storm water permit from the city engineer in the following cases: 1. Land disturbing activity generally disturbs one or more acres of land; ... ... 8. Construction of parking lots or other similar impervious surfaces that are greater than one-tenth acre.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance O-34-2026, passed August 4, 2026).
Full Breakdown
070 imposes a storm water utility fee on every developed parcel in the city that has impervious surfaces contributing runoff to, or benefiting from, the city's storm water system, excluding government-owned streets and storm water facilities the city, county, or state already operates. The fee is calculated in equivalent residential units, with one ERU equal to 4,000 square feet of impervious surface; each residential unit pays a base rate of one ERU, and nonresidential parcels pay a multiple of that rate based on their measured impervious area, with the rate itself set on the city's consolidated fee schedule.
100 layers on a separate storm water permit requirement, administered by the city engineer, for land disturbing activity of one acre or more, for smaller disturbances that are part of a larger common development plan reaching an acre, for borrow pit activity, for construction of a single-family home, for earthen material processing, for work requiring an on-site or off-site storm water management facility, and for parking lots or similar impervious surfaces over one-tenth acre; the city engineer and public works director can waive the permit in writing if they determine there is no impact to the system.
No building permit may issue until a required storm water permit is obtained. 090, then to the public works director within 10 days of an adverse decision, and finally to the city council, whose decision is final.
Violations & Fines
Violating the storm water chapter, including operating without a required storm water permit, is enforced under EMMC 13.75.160 through notices of violation, consent orders, show-cause hearings, and cease-and-desist orders, and is a Class C misdemeanor. EMMC 13.75.170 backs that with a civil fine of $50.00 to $5,000 per day, with each day of violation a separate offense, appealable to the city council within 15 days under EMMC 13.75.180.
Frequently Asked Questions
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Sources & Official References
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Stormwater Management in Nearby Cities
How other cities in Utah County handle stormwater management.