Catch Basins & Inlets

Stormwater Management

Stormwater catch basin with inlet, frame, and grate capturing roadway runoff

Catch Basin Maintenance Services

CMS provides catch basin cleaning and stormwater maintenance services across North Carolina for commercial properties, HOAs, and municipal drainage systems. Catch basins collect stormwater runoff and trap sediment and debris before water enters underground drainage pipes. Over time, sediment accumulation can clog the basin and reduce drainage capacity. CMS crews inspect and clean catch basins to maintain proper stormwater flow. Routine maintenance helps prevent localized flooding and drainage blockages.

Catch Basin Maintenance Notes

Catch basins require periodic cleaning to remove sediment and debris. CMS maintenance crews vacuum accumulated material and inspect drainage structures. Routine maintenance protects underground pipe systems from clogging.

Maintenance Tasks

Remove sediment from basin sumps
Vacuum debris and trash
Inspect basin grates and frames
Inspect outlet pipes
Remove blockages from inlets
Monitor sediment accumulation levels

Catch Basin Inspection Services

CMS performs catch basin inspections to evaluate sediment accumulation and drainage performance. Inspectors verify that basin outlets remain clear and functioning. Inspection reports identify cleaning and repair needs.

Catch Basin Repair Services

CMS repair crews address damaged basin structures, broken grates, and drainage blockages. Repairs restore proper drainage capacity and stormwater flow. Prompt repairs help prevent flooding and infrastructure damage.

Catch Basin Frequently Asked Questions

How often should catch basins be cleaned?
Most catch basins should be cleaned once or twice per year depending on sediment buildup.

What happens if catch basins are not cleaned?
Sediment buildup can block drainage and cause localized flooding.

Does CMS provide catch basin vacuum cleaning?
Yes. CMS performs vacuum cleaning to remove sediment and debris.

Can catch basins clog underground pipes?
Yes. Excess sediment can enter pipes and cause blockages.

Do catch basins require inspections?
Yes. Routine inspections help identify cleaning and repair needs.

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Above Ground SCM Maintenance, Repairs, and Inspections

Stormwater Maintenance – Underground SCM Devices

Routine maintenance of underground stormwater control measures (SCMs) such as vaults, pipes, and chambers ensures these systems continue to manage runoff and treat water effectively. Services include sediment removal, debris clearing, and monitoring for blockages to maintain proper hydraulic performance. CMS provides scheduled maintenance programs throughout North Carolina to protect system functionality and prevent costly failures.

Compliance, Longevity & Sustainability:
Regular maintenance helps property owners meet NC DEQ and local stormwater permit requirements by keeping systems fully operational. Preventing sediment buildup and minor damage extends the service life of underground SCMs. Well-maintained systems improve water quality, manage runoff efficiently, and support long-term environmental sustainability.

Technician performing maintenance on an underground stormwater control measure (SCM) vault, removing sediment and debris.

Underground stormwater detention system providing flow control and treatment at a space-constrained site

Stormwater Repairs – Underground SCM Devices

Underground SCM repairs address structural damage, clogged pipes, damaged vaults, or eroded chambers that compromise system performance. Timely repairs restore full hydraulic capacity and ensure water quality treatment goals are met. CMS offers targeted repair solutions to return underground systems to optimal operation while minimizing disruption to surrounding properties.

Compliance, Longevity & Sustainability:
Prompt repairs ensure systems remain compliant with regulatory requirements and avoid penalties. Restoring structural integrity protects the long-term durability of the underground infrastructure. Efficient repairs reduce material waste, extend asset life, and maintain sustainable stormwater management practices.

Stormwater Inspection – Underground SCM Devices

Professional inspections of underground SCMs include structural evaluations, sediment and debris assessments, and hydraulic performance checks. Regular inspections identify developing issues such as clogs, damage, or decreased flow before they escalate into major problems. CMS provides detailed inspection reporting to support maintenance planning and regulatory documentation requirements.

Compliance, Longevity & Sustainability:
Routine inspections demonstrate due diligence and help property owners comply with NC DEQ and local stormwater regulations. Early detection of deficiencies reduces long-term repair costs and maximizes the lifespan of underground assets. Properly inspected systems ensure continued pollutant removal, efficient runoff management, and environmentally responsible operations.

CCTV camera inspecting the interior of an underground stormwater control measure (SCM) vault for blockages and structural issues.

Underground Stormwater SCMs

Underground stormwater SCMs, including detention vaults, chamber systems, infiltration trenches, and sand filters, provide high-capacity stormwater storage and treatment while preserving valuable surface space on commercial and industrial sites. Routine stormwater inspection, sediment removal, and structural maintenance are critical to ensure underground stormwater systems operate efficiently, prevent blockages, and remain compliant with stormwater management requirements.

Catch Basins
CMS maintains catch basins by removing sediment and debris, inspecting grates and structures, and ensuring proper drainage to keep stormwater systems functioning effectively.

Hydrodynamic Separators
CMS performs maintenance on hydrodynamic separators including vacuum cleaning, sediment removal, inspection of internal components, and debris extraction to maintain stormwater pollutant removal efficiency.

Infiltration Trenches / Infiltration Systems
CMS maintains infiltration trenches and systems by removing sediment buildup, inspecting inlets, restoring infiltration capacity, and ensuring proper stormwater drainage and groundwater recharge.

Proprietary Filtration Devices (e.g., StormFilter)
CMS maintains proprietary filtration devices such as StormFilter systems through cartridge replacement, sediment removal, system inspection, and routine servicing for optimal stormwater treatment.

Rainwater Harvesting Systems
CMS provides maintenance for rainwater harvesting systems including tank inspection, debris removal, filter cleaning, and pump checks to ensure efficient stormwater reuse.

Sand Filter Systems (Underground)
CMS performs maintenance on underground sand filter systems including sediment removal, filter media inspection, confined-space cleaning, and structural checks to maintain treatment performance.

Storm Sewer Systems
CMS maintains storm sewer systems through pipe inspection, debris removal, jetting, and structural repairs to ensure reliable stormwater conveyance and drainage.

Stormwater Chamber System
CMS maintains stormwater chamber systems through sediment removal, inlet inspection, vacuum cleaning, and structural evaluation to preserve underground stormwater storage capacity.

Underground Detention Pipe Systems (CMP/HDPE)
CMS performs maintenance on underground detention pipe systems by inspecting pipes, removing sediment buildup, cleaning inlets, and ensuring proper stormwater storage and flow.

Underground Detention Vaults (Concrete)
CMS maintains underground concrete detention vaults through sediment removal, structural inspection, debris clearing, and confined-space cleaning to ensure effective stormwater storage.