CIT Sewer SolutionsCall 515-434-2248
Service illustration of concrete manhole walls, the circular access opening and a base channel.

Municipal manhole inspection / 3D assessment

We inspect your city’s leaking manholes.

When rain increases flow at your pump stations, leaking manhole joints are one place to investigate. We record visible water entry and wall damage, then provide reviewed reports and 3D models so your engineer can assess repairs.

Call 515-434-2248
Illustration of a slim panoramic camera suspended below a vertical LED light inside a concrete manhole.

Wall inspection

We inspect your manhole walls without an inspector entering.

A view from the cover can leave your staff unable to describe damage farther down the wall. Our crew lowers an illuminated 360-degree camera from the surface to record accessible joints, pipe entries and the base. Your technician-reviewed images show the areas your engineer needs to assess.

View the camera and lowering unit.
Tripod-mounted lowering unit with a suspended manhole inspection camera and lighting.
The lowering unit suspends the camera and lighting beneath the tripod for inspection inside your manhole.
See the manhole problems we investigate.

Select the manhole concern your city is investigating.

Condition illustration of water entering through a horizontal joint in a concrete manhole wall.

01 / 03Wet-weather leakage

We locate visible water entry at your manhole joints.

If your city sees higher sewer flows after rain, leaking joints and deteriorated mortar are possible entry paths. Our inspection records where water is entering your manhole so your staff can identify locations for repair assessment. We also provide grouting for suitable leakage locations under a separate repair scope.

Examine aging brickwork.
Condition illustration of a curved manhole brick wall with chipped bricks and missing mortar.

02 / 03Aging brickwork

We document the wall damage your engineer needs to assess.

Missing mortar, displaced bricks and deteriorated concrete create different rehabilitation needs. We record the affected areas around your manhole so your engineer can define the repair location and extent. Comparing these conditions across inspected manholes helps your city decide which assets to include in its rehabilitation program.

Examine pipe connection damage.
Condition illustration of a pipe connection entering a concrete manhole above its formed base channel and bench.

03 / 03Connection damage

We examine connections around your sewer trouble locations.

When your staff returns to the same surcharge or backup location, the manhole’s pipe entries, channel and bench also need examination. We record visible damage in those areas. If the concern extends into a connected sewer, we can scope CCTV inspection to examine that pipe separately.

Review the 3D assessment.
3D assessment illustration of a cutaway concrete manhole with part of its wall represented as a point cloud.

3D assessment

Compare your manhole’s damaged walls and connections in 3D.

A selected photograph may leave your engineer needing another view of a damaged wall or pipe entry. We use SewerAI to reconstruct the captured interior as a 3D model and point cloud, so the same recorded surfaces can be examined from different angles when defining rehabilitation.

View an example manhole model.
Example three-dimensional manhole model showing wall surfaces, internal pipes and the base.
This example model shows the walls, internal pipes and base together in a cutaway view.

Your inspection report

Compare manhole conditions before you allocate rehabilitation funds.

The inspection image shows missing brickwork and open joints. Follow each finding to its photograph, then review the report with your engineer when defining the affected wall area and proposed rehabilitation.

Inspection photograph of a brick manhole wall with missing bricks, exposed roots and open mortar joints.
Inspection photograph

Bricks are missing from the wall.

The opening interrupts several courses of brickwork. Your engineer can use this view to define the affected wall area when preparing rehabilitation requirements.

  1. 01Photograph
  2. 02Findings
  3. 03Report
CIT Sewer Solutions
Sample reportBrick manhole

Manhole condition report

NASSCO Manhole Assessment Certification Program (MACP) logo
Component
Manhole wall
Material
Brick
Inspection photograph of a brick manhole wall with missing bricks, exposed roots and open mortar joints.

Photographic findings

Our technicians review your inspection images and condition coding.

Brick manhole01

This sample pairs inspection photographs with example findings. We agree the assessment level and report format for your project.

Compare the conditions in your inspected manholes.

When rehabilitation funding covers only part of your inventory, our technician-reviewed Manhole Assessment Certification Program (MACP) Level 1 or Level 2 reports give your staff and engineer recorded conditions to compare.

Locate each proposed repair in your manhole inventory.

Your geographic information system (GIS) data links each report to its manhole identifier, so the wall damage in the report can be matched to the asset on your city’s map.

MACP is a trademark of NASSCO, Inc.

Service illustration of concrete manhole walls, the circular access opening and a base channel.

Project inquiry

Request pricing for your city’s manhole inspection.

Tell us your city, the area or manholes causing concern and an approximate count if you have one. We can price an inspection of those locations or a wider assessment for your rehabilitation program.

Call our team.515-434-2248info@citsewer.com

Request your city’s inspection pricing.

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Plan your city’s manhole assessment with us.

Can you investigate manholes in our wet-weather problem area?

Yes. We inspect accessible manhole walls, joints and pipe connections for visible water entry. If your city needs to compare wet-weather flow across sewer areas, we can scope temporary flow monitoring and further source investigation separately. A manhole inspection does not measure all inflow and infiltration in your collection system.

What does our municipal manhole assessment include?

Your package includes the selected Manhole Assessment Certification Program (MACP) Level 1 or Level 2 assessment, a 3D model and point cloud, shareable condition reports and geographic information system (GIS) data. Our technicians review the inspection images and condition coding. Your staff and engineer can compare recorded wall damage and leaking joints when defining rehabilitation priorities.

Can CIT repair the manhole leaks you find?

We provide manhole and structure grouting for suitable leakage locations. Deteriorated walls may also need rehabilitation beyond sealing the water-entry path. We assess the observed conditions and agree any grouting or other repair separately from the inspection.

Can our staff review sample reports and models first?

Yes. Request a sample review so your staff and engineer can examine how a condition report, inspection image and 3D model describe a manhole. We can also quote a pilot of approximately 10 to 25 manholes before a larger program. The pilot is separately priced and is not a minimum inspection quantity.

Can we start without a complete manhole inventory?

Yes. Tell us your city, the streets or sewer area involved and the problem your staff is investigating. Include an approximate manhole count, existing identifiers or access restrictions if you know them. We can discuss inspection pricing before you have a complete asset list.

Will the inspection show every leak and hidden defect?

Our camera records accessible surfaces and water entry visible at the time of inspection. The 3D model reconstructs those captured surfaces. Neither establishes hidden conditions, structural capacity or watertightness. Your engineer uses the recorded conditions when evaluating rehabilitation.

Where can CIT inspect our city’s manholes?

We travel for projects in Iowa, Minnesota, Missouri, Nebraska, Arkansas and Colorado. Contact us about your city and the manholes or sewer area you want assessed so we can discuss access and scheduling.

Can you also inspect a single manhole at our facility?

Yes. We inspect individual manholes at commercial and industrial facilities as well as municipal systems. A basic visual inspection has a separate scope from the municipal assessment package. We confirm the inspection and reporting your facility needs when preparing your quote.