Contech StormFilter Maintenance & Inspections

Keep your Contech StormFilter operating properly with professional inspection, cleaning, maintenance, and cartridge replacement from iSTORMWATER. We service belowground StormFilter systems for commercial properties throughout Maryland, Northern Virginia, Washington, DC, and Delaware.

Routine StormFilter maintenance helps identify sediment accumulation, filter loading, drainage problems, damaged components, and other conditions that can affect system performance. Our stormwater maintenance professionals can inspect your system, remove accumulated material, clean the structure, and coordinate cartridge replacement when needed.

Whether you need a scheduled StormFilter inspection, routine maintenance, or cartridge replacement, iSTORMWATER can help keep your stormwater treatment system functioning as designed.

StormFilter Maintenance for Commercial Properties

Contech StormFilter systems are designed to provide belowground stormwater treatment while minimizing the amount of surface space required for stormwater management. Because the system relies on filter cartridges to remove pollutants from runoff, regular inspection and maintenance are important parts of long-term system performance.

StormFilter maintenance needs vary from property to property. Sediment loading, trash and debris, upstream pretreatment, runoff volume, construction activity, and other site conditions can all affect how frequently a system requires service.

Contech recommends using routine inspection and maintenance to determine when cartridges need to be replaced rather than relying on a fixed replacement schedule. StormFilter systems are designed around maintenance intervals that can range from approximately one to five years, but actual service needs are site-specific.

iSTORMWATER provides the hands-on maintenance services needed to keep these systems accessible, clean, and ready to perform.

What Is Included in Contech StormFilter Maintenance?

StormFilter maintenance can involve several steps depending on the configuration and condition of the system. A typical service visit may include:

• Inspecting the StormFilter structure and access points
• Evaluating sediment and debris accumulation
• Checking the condition of filter cartridges and internal components
• Identifying signs of restricted flow or bypass
• Removing accumulated sediment and debris
• Vacuuming the StormFilter vault or treatment structure
• Washing the interior of the structure when appropriate
• Removing spent filter cartridges
• Installing replacement or factory-refurbished cartridges
• Documenting site conditions and completed maintenance
• Identifying additional repairs or maintenance needs

The exact maintenance procedure depends on the StormFilter configuration and site conditions. Some systems may require access to the vault during maintenance, making appropriate confined-space procedures and safety controls essential. Contech’s maintenance guidance specifically notes that OSHA confined-space requirements must be followed when vault entry is necessary.

StormFilter Inspection Services

A StormFilter inspection helps determine whether the system is functioning properly and whether maintenance or cartridge replacement is needed.

During an inspection, our technicians evaluate accessible components and look for conditions that could affect the system’s ability to receive, treat, and discharge stormwater. Depending on the system configuration, inspection activities may include:

• Checking access covers and the condition of the structure
• Measuring sediment accumulation
• Looking for standing water or restricted flow
• Evaluating visible cartridge and internal component conditions
• Checking for accumulated trash and debris
• Looking for evidence of bypass or unusual operating conditions
• Documenting damage, erosion, construction impacts, or other site changes
• Photographing and reporting observed conditions
• Recommending maintenance or additional investigation when needed

Routine inspection is particularly important for properties where sediment, trash, or other pollutants enter the system at a high rate. Sites with higher loading may require more frequent service or earlier cartridge replacement.

How Often Should a StormFilter Be Inspected?

There is no single inspection schedule that applies to every StormFilter. Maintenance requirements depend on the system configuration, site conditions, pollutant loading, runoff characteristics, and applicable regulatory requirements.

For many commercial properties, annual inspection is a practical maintenance planning interval. Additional inspections may be appropriate when:

• A property has experienced significant construction or land disturbance
• Heavy sediment or debris has entered the drainage system
• A spill or unusual pollutant release has occurred
• The system shows signs of restricted flow
• Standing water or other performance issues are observed
• Previous inspections identified elevated maintenance needs
• Local or regulatory requirements call for more frequent inspections

Regular inspections can help property owners identify maintenance needs before a heavily loaded system develops more significant performance problems.

StormFilter Cleaning and Sediment Removal

Sediment and debris can accumulate inside a StormFilter over time. Removing this material is an important part of maintaining the treatment structure and preserving available storage and flow capacity.

iSTORMWATER uses vacuum equipment, including vac truck services, to remove accumulated sediment and debris from belowground stormwater systems.

StormFilter cleaning may include:

• Removing accumulated sediment from the vault
• Vacuuming debris and pollutants from accessible areas
• Cleaning the interior of the treatment structure
• Removing material from pretreatment areas when applicable
• Properly handling removed material
• Inspecting the system after cleaning

Cleaning needs should be evaluated as part of the overall maintenance process rather than treating sediment removal as a standalone task. A clean structure still requires functioning filter cartridges and properly maintained components to provide the intended treatment.

Contech StormFilter® Cartridge Replacement

Filter cartridges are a central component of the StormFilter treatment process. Over time, cartridges can become loaded with sediment and other pollutants, reducing available flow capacity and eventually requiring replacement.

The timing of cartridge replacement should be based on inspection, system condition, and site-specific loading rather than simply replacing cartridges on a predetermined calendar schedule.

When cartridge replacement is needed, iSTORMWATER can assist with:

• Removing spent StormFilter cartridges
• Cleaning the system during cartridge maintenance
• Installing replacement cartridges
• Coordinating factory-refurbished cartridges when appropriate
• Removing and handling spent cartridge components
• Completing additional maintenance identified during the service visit

Contech offers a cartridge exchange program in which factory-refurbished cartridges are supplied for installation and used cartridge cores are returned to the manufacturer. Contech states that its refurbished cartridges are restored to original specifications and recommends OEM filters rather than field-refurbished alternatives.

StormFilter Inspection vs. Maintenance

A StormFilter inspection and StormFilter maintenance are related, but they are not the same service.

An inspection evaluates the condition and performance of the system and helps determine whether maintenance is necessary.

Maintenance involves the physical work required to keep the system operating properly. Depending on the system, this can include sediment removal, cleaning, cartridge removal, cartridge replacement, and other corrective work.

This distinction is important because not every inspection should automatically result in cartridge replacement. Evaluating the actual condition of the system allows property owners to address maintenance needs based on evidence and site conditions.

Why Regular StormFilter Maintenance Matters

A StormFilter is part of a property’s overall stormwater management system. When maintenance is deferred, accumulated sediment, debris, or loaded filter cartridges can affect the system’s ability to receive and treat runoff.

Routine maintenance can help:

• Identify problems before they become more expensive repairs
• Maintain available flow capacity
• Address sediment and debris accumulation
• Identify cartridge replacement needs
• Protect other components of the stormwater system
• Maintain documentation of completed maintenance
• Support ongoing stormwater management and compliance responsibilities

StormFilter maintenance costs can vary significantly based on factors such as vault size, cartridge quantity, site access, disposal requirements, location, labor, and pollutant loading. For that reason, maintenance should be evaluated on a site-specific basis rather than assuming every StormFilter will have the same service requirements.

StormFilter Maintenance for MD, DC, VA, and DE

STORMWATER provides professional Contech StormFilter inspection and maintenance services for commercial properties throughout our service area.

We serve properties in:

• Maryland
• Northern Virginia
• Washington, DC
• Delaware

Our stormwater maintenance team works with property owners, property managers, HOAs and COAs, contractors, and other responsible parties to inspect and maintain belowground stormwater infrastructure.

Whether your StormFilter needs a routine inspection, sediment removal, cleaning, cartridge replacement, or additional maintenance, we can evaluate the system and recommend the appropriate next step.

📞 Call (410) 231-3455 or contact us online to schedule a service visit from our certified stormwater maintenance professionals.

StormFilter Compliance Support

If an inspection results in a maintenance notice or stormwater violation related to your StormFilter, iSTORMWATER can help identify and address the required corrective work.

Our team can inspect the system, complete needed cleaning or cartridge replacement, address maintenance deficiencies, and provide documentation of the completed work. We work with property owners and managers to help resolve StormFilter maintenance issues and support compliance with applicable requirements.

Schedule Contech StormFilter Maintenance

Don’t wait until a belowground stormwater system develops a significant performance problem.

iSTORMWATER provides Contech StormFilter inspections, maintenance, cleaning, and cartridge replacement for commercial properties throughout Maryland, Northern Virginia, Washington, DC, and Delaware.

📞 Call (410) 231-3455 or contact us online to schedule a StormFilter inspection or maintenance service.

Related Stormwater Services

• Stormwater Inspections
• Preventative Stormwater Maintenance
• Stormwater Vault Maintenance
• Stormwater Pretreatment Maintenance
• Sediment & Debris Removal
• Stormwater Compliance Services