Stormwater Maintenance Requirements

Posted On: April 04, 2022

When it comes to properly handling runoff from storms, preventative action is a critical best practice. Knowing how your stormwater system is performing is a must, and inspections with needed maintenance are the smartest way to avoid costly disasters.

iSTORMWATER can inspect your system and provide the documentation needed to obtain permits and certification in Virginia, Washington, DC, and Maryland. Call us at (443) 699-2828 or contact us online to get started.

Types of Stormwater Inspection

For routine inspections carried out monthly, weekly, or even daily to make sure the system is working in accordance with your Stormwater Pollution Prevention Plan, facilities typically follow a checklist that contains:

  • Date and time of inspection
  • Information on who is performing the inspection
  • Controls that require replacement or repair
  • Compliance and noncompliance documentation
  • Weather conditions at the time of inspection

In addition to routine inspections, facilities need quarterly inspections performed to ensure stormwater mitigation meets the standards set in the permit. Quarterly inspections include visual checks on outflow areas and obtaining stormwater samples from multiple points for analysis.

At least once a year, facilities need a comprehensive inspection of the premises from a certified inspector. These inspections require:

  • Observing storm drains and any other area the permit covers
  • Documenting all materials that may have been touched by stormwater
  • Summarizing data from routine inspections
  • Noting spills or leaks
  • Documenting control measures

The inspector will note any repairs or maintenance required to keep the permit valid.

State Requirements for Stormwater Maintenance

Stormwater permits are required under the National Pollutant Discharge Elimination System, to limit the discharge of pollutants from industrial and municipal sources. State environmental departments are responsible for setting permit requirements on an individual basis.

Keeping up with which permits require what criteria can be a huge headache, so working with a stormwater management specialist is key to maintaining compliance.

Stormwater Maintenance FAQ

How do I get a stormwater permit?

The process differs depending on your state, but you will need to begin by preparing a Stormwater Pollution Prevention Plan in accordance with state law.

Can I perform a stormwater inspection myself?

You can perform routine inspections for record-keeping, but quarterly and annual inspections and maintenance must be performed by a professional with the appropriate license.

How long is a stormwater permit valid?

As long as requirements are met, NPDES permits are valid up to five years, although you must submit a renewal application 180 days or more ahead of the permit expiration date.

Simplify Your Stormwater Maintenance

Maintenance and inspection requirements for stormwater management systems are complex, but iSTORMWATER can ensure your facility stays compliant. Our certified inspectors will find and explain any points of noncompliance and recommend the work needed to keep your permit and provide all the documentation you will need to submit for renewal.

Call us at (443) 699-2828 or contact us online to schedule your stormwater inspection and maintenance.  


Real Results

iStormwater LLC was an excellent choice. They made the process of the Storm water pond repairs seamless. They took charge of the project and got the project approved and passing the inspection. We highly recommend them and would use them again.

Lyonswood HOA

Incredible stormwater management service. The owner John consulted on a property I manage and ended up saving us thousands of dollars in environmental fees from the government. Now, our property is compliant with the EPA and we have a great partner to keep us maintained on storm water regulations over time.

Kelly E.
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