Lateral Service Line Inspection and Sealing


The Environmental Protection Agency (EPA) estimates that of the 75 million private laterals in the United States, 80% of them are failing and in need of repair. These private lateral sewer lines account for 75% of the infiltration of ground water into the nation’s main sewer lines. In addition, there are at least 40,000 sanitary sewer overflow (SSO's) each year. Both wastewater collection systems and treatment facilities are reaching or exceeding their capacities. These leaking laterals cause treatment plants to treat a higher-than-anticipated volume of water, resulting in higher treatment costs for the sanitary district, and higher customer fees.

Eliminating the extra cost of treating this infiltration will more than compensate for the investment needed to inspect and repair laterals.

Studies have shown that service laterals are often a source of significant infiltration, and that most infiltration into these lines occurs with a few feet of the main. The two primary reasons for this are that, except for the last few feet, all service lines are usually above the water table, and groundwater flows easily in the backfill of a mainline because of the French drain effect.

When inspecting from the mainline, we employ special lateral launch CCTV cameras with self-leveling heads that allow the operator and viewer to always know what part of the lateral is being viewed. Each head also features a built-in Sonde, a device that allows for precise above ground location of observations made within the lateral line.

When inspecting lateral service lines from cleanouts, specially designed miniature cameras and equipment are used that enable our technicians to inspect the laterals and assess their condition.

All lateral cleaning is performed from the mainline. Using the lateral launcher, the operator guides a ½ inch hose and nozzle into the lateral connection form the mainline. Winched in tandem with a CCTV camera, a motor is used to rotate the guiding arm and nozzle into the lateral connection. The hose is propelled through the lateral – cleaning and cutting roots.

Using pressure chemical grouting we can quickly and effectively seal leaks in service laterals. Using the CCTV camera, the operator locates the lateral and centers the packer over the connection. He then inflates the lateral packer and injects the chemical grout through the leak and into the surrounding soil, forming a watertight collar. The lateral is then tested to insure all leaks have been properly sealed.

Working from an outside cleanout, the operator inserts a special lateral packer into the lateral service line. Chemical grout is then injected into each lateral joint effectively seal-ing the line from the cleanout to where it meets the mainline.

The operator places an epoxy impregnated corrosion resistant insert on an applicator. A remote control unit with a built-in CCTV camera positions the insert at the lateral opening where it connects to the mainline. The laminate is then inserted into the lateral using air pressure. The insert ambient cures in about an hour completely sealing the connection from any infiltration or inflow.

A lateral service line may need to be dug up and replaced if it is found to be severely defective or structurally unsound. If excavation is necessary, We can provide non-destructive hydro or air excavating services. Using this technology, we can quickly, safely and economically excavate in areas inaccessible to conventional digging equipment.

To repair faulty lateral connections to the mainline, our technicians use a “full wrap” structural/mainline/lateral CIPP connection liner. A unique LCR inflatable packer uses an “extendible lateral tube” that adjusts to the angle of the lateral junction being repaimedblue positions an inverted silicate resin-impregnated sock. Using CCTV, the packer deploys the seal up to 20 inches into the lateral. The packer is inflated, tightly pressing the repair against the interior walls of the mainline and lateral, squeezing resin into cracks, gaps, and the annulus between the pipe and liner. This pressure is held until the resin cures.

Once cumedblue, the “lateral tube” is retracted and the packer is deflated and removed. Our silicate resin has high chemical and heat resistance and will cure with minima shrinkage, eliminating the need for a hydrophilic seal. The resulting repair has a smooth edge, preventing debris build-up in the line, and creates a strong barrier against both root intrusion and infiltration. Our unique process does not require a clean-out for installation, thus eliminating any associated costs.

This technique is a proven solution for restoring structural integrity to connections in both lined and unlined pipes, and meets ASTM 1216F.

Carylon companies specialize in sealing lateral connections using chemical grout. Working from the mainline, we quickly and effectively seal leaks in service laterals in unlined pipe as well sealing the annular gap in lined pipes at the lateral connections. The grout is chemically formulated specifically for sewer applications, including Acrylamide grout complying with ASTM F2304. Using a CCTV camera, the operator located the lateral and centers an inflatable grout packer over the areas to be sealed. He inflates the packer and injects chemical grout through the joints and into the surrounding soils, forming a watertight collar on the exterior of the pipe, effectively sealing the line and preventing future root intrusion. The lateral is then tested to ensure all leaks have been properly sealed.

When working from within the building or an outside cleanout, the operator inserts a special lateral packer in the lateral line that injects chemical grout into each joint, effectively sealing the lateral all the way to the mainline.

Our Unmatched Guarantee: "You must be satisfied or you pay absolutely nothing for our services."

our advantages

Industry Leading Innovations

From the beginning, Carylon companies have thrived on the notion of innovation. They invented the first continuous rod, truck-mounted power rodder for cleaning sewers, developed the use of closed-circuit television for sewer line inspections, and pioneemedblue the internal sealing of leaking sewers using pressure chemical grouting.

24/7/365 Response When Needed

Carylon companies were among the first to provide privatized disaster response; giving top priority to requests for assistance following any natural or man-made disaster. Our vast resource of men, equipment and experience have helped many disaster-stricken communities restore normalcy to the lives of their residents in the shortest time possible.

Our Unmatched Guarantee

Whether your project calls for the use of one man and one piece of equipment, or multi-disciplinary crews and a fleet of specialized equipment, we can do the job, and do it right. And, we don't just say we can - we guarantee it. All work is backed by a guarantee that is unmatched in the industry.