Stormwater Management

Stormwater quality requirements are mandated by the Federal government in the Clean Water Act. It has been a community’s responsibility to fund the program. 

Stormwater quantity requirements are mandated by the Federal Emergency Management Agency.

To meet these requirements, the State issues general stormwater permits for municipalities and in turn, the municipalities issue ordinances to adhere to the State requirements. Below are some of the State permits and Town Ordinances required for Stormwater Management.


Phone: 520-229-4850

Monsoon Preparedness       Guidelines to Drain Your Pool & Spa    Report a Spill

Frequently Asked Questions

What is the Stormwater Utility and why do we need a Stormwater Utility Fee?

In 2002, the Arizona Department of Environmental Quality in response to Environmental Protection Agency mandates required all municipalities of less than 100,000 people to implement programs and practices to meet various storm water quality and quantity standards. Unfortunately the Federal Government did not provide any funding to meet these standards.  This fee will address these federally directed requirements.

What does the fee provide?

The fee will provide both visible and invisible benefits to Town of Oro Valley residents. The visible benefits will include additional street sweeping, vegetation control, culvert maintenance and minor repairs and maintenance after storms.

The less visible benefits include inspections for storm water control devices to ensure their proper operation, development of required storm water regulations and manuals, and studies and designs supporting mandated storm water activities.

What can our residents do to help improve stormwater quality?

On a routine basis, think about your actions, whether it is at home or at work, and what impact they may have on the environment and stormwater quality.  It has been shown that urbanization increases the variety and amount of contaminants carried into streams and washes.  The contaminants include:

a.  Sediment,
b.  Oil, grease, and toxic fluids from motor vehicles,
c.  Pesticides and nutrients from lawns and gardens,
d.  Viruses, bacteria, and nutrients from pet wastes and failing septic systems,
e. Trace metals and toxic organic compounds from roof shingles, motor vehicles, and improper handling and disposal of paints and household cleaning compounds, and
f.  Toxicological and physical affects of debris and waste material generated both residentially and commercially.   You can help to lessen the likelihood of contaminants entering stormwater runoff simply by thinking about and conducting your day-to-day activities in an environmentally friendly manner. 

Education and Outreach

Monsoon Preparedness Guide(PDF, 200KB)

Spa and Pool Drainage Requirements(PDF, 2MB)

Information for Contractors & Developers(PDF, 195KB)

Automotive Maintenance & Car Care(PDF, 205KB)

The Illicit Discharge Detection & Elimination (IDDE) Program is intended to ensure the health, safety, and general welfare of citizens, and the environment by protecting and enhancing the stormwater quality discharged through watercourses within the Town of Oro Valley.

For examples of illicit discharges, view the educational YouTube video below on "Illicit Discharge Detection & Elimination: A Grate Concern.