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Water Services

Stormwater Control Measures

Stormwater Control Measures (SCMs) reduce the amount of polluted stormwater that enter our creeks and streams.

Maintaining Your Stormwater Control Measure

Property owners are responsible for inspecting and maintaining stormwater control measures on their property.

Inspections are required at least annually and maintenance is required as needed. A maintenance and inspection document is included with your property deed. These documents are available through the Metro Nashville Register of Deeds.

More information including the location, type, and, in some cases, maintenance information can be found on the Metro Planning Parcel Viewer. For instructions on how to use the Parcel Viewer, download our How to Find Your Stormwater Control Measures guide.

For a list of certified Stormwater Control Measures inspectors, visit the Tennessee Stormwater Management training page and click the "certification list" tab.

For a list of companies that have committed to following Stormwater Control Measures guidelines, download Water Quality Stormwater Control Measures Maintenance Companies.

Reporting Your Annual Inspection

Some property owners are also required to report their annual inspection to Metro Water Services. This is based on when the grading permit requiring your Stormwater Control Measures was issued.

To find your grading permit issue year, download and follow our How to Find Your Stormwater Control Measures guide. The year will be the first four digits of your measure's Project ID. Then use the chart below to identify what you need to report.

Grading Permit Issue Year Reporting Requirement
Pre - 2008 No Annual Report
2008 - present Owner submits Annual Report by July 1 of each year

To report your Inspection and Maintenance, download and complete the Annual Stormwater Control Measures Inspection/Maintenance Summary Form. You only need to complete one form for all measures on your property.

Your annual report is due by July 1 of each year and should be emailed to or mailed to:

Metro Water Services
1607-A County Hospital Road
Nashville, TN 37218

Types of Stormwater Control Measures

Bioretention basin (or rain garden)

rain garden bioretention stormwater control

A bioretention basin, or rain garden is a hole filled with native plantings and special soil mix. It collects and slows stormwater runoff and removes pollutants.

Pervious Pavement

pervious pavement with firetruck demonstrating water seeping through

Permeable pavement allows stormwater runoff to drain through the pavement into the soil below.

Wet Retention Ponds

wet retention pond metro center nashville with fountain

Wet retention ponds can consist of a combination of a permanent deep water pool and a shallow marsh. These ponds allow pollutants to settle out of the water, encourage natural microbial activity that cleans the water, and reduces the overall amount of stormwater runoff.

Dry Detention Ponds

dry pond

Dry detention ponds temporarily store and slowly release stormwater runoff, and prevent downstream flooding. Sediment (soil), nutrients, heavy metals, and other pollutants settle out in the pond.

Proprietary Devices or Water Quality Units

clean water quality unit

Water quality units filter pollutants out of stormwater runoff and release the treated water to the drainage system. The structures have limited pollutant storage and require frequent maintenance.

Grassy Swale

well maintained grassy swale

Grassy swales reduce and slow down the flow of stormwater runoff as well as filter out some pollutants.


More information about Metro Water Services regulation of Stormwater Control Measures is available in our Stormwater Management Manual under “Stormwater Control Measure (SCM) Maintenance Document”.

If you have questions, call Metro Water Services at 615-880-2420 or email us at

Fact Sheets

The following fact sheets include information on what to look for during inspection and best practices for maintaining common Stormwater Control Measures. However, you should consult your maintenance agreement attached to your property deed for specific maintenance and inspection requirements of your measures.