Pipe Bursting in Lake Forest

El Toro's tracts and the foothill villages

The older half of Lake Forest, the neighborhoods built as El Toro in the late 1960s and 1970s around the lakes, Lake Forest Drive and the older parts of Serrano and Trabuco, was plumbed with cast iron under slab foundations in the first phases and with ABS plastic through the 1980s. Foothill Ranch and Portola Hills, built from the late 1980s through the 2000s on the slopes toward the toll road, use ABS and PVC throughout, on graded pads, under homeowners associations that control the driveways, walkways, slopes and landscaping. Many neighborhoods, especially the attached homes around the lakes, have shared laterals serving several units.

The first cast iron is now fifty years old and channeling out along the bottom. ABS cracks at fittings and at the transition to the stub under the house, gets crushed where a driveway or a pool deck was poured over shallow pipe, and bellies where a graded pad meets looser fill on the way to the street. A shared lateral does all of that under more flow than it was sized for.

Graded pads, clay and a wet lake edge

The city is engineered fill over the clay and sandstone of the Saddleback foothills, and fill settles. A lateral that leaves a compacted building pad and crosses a slope or a filled swale is where the camera finds bellies and sheared joints. Around the two lakes the ground stays wet and the older cast iron there has corroded faster. The clay swells and shrinks with the seasons, stressing rigid pipe at the fittings, and forty years of sycamores, eucalyptus and pines in the parkways and slopes means roots at any cracked fitting.

Sewers and permits

Local sewers in Lake Forest belong to the El Toro Water District in most of the older city and to the Irvine Ranch and Santa Margarita water districts in other areas, not to the city itself. The lateral from the house to the connection at the main is the property owner's responsibility, and the HOA must approve any work that touches the surface it controls.

Lateral repair or replacement needs a plumbing permit from the city, and anything in the sidewalk, parkway or street needs an encroachment permit and an inspection before the pit is closed. The contractor should pull both and say so in the quote.

Which trenchless method fits a Lake Forest lateral

• Sewer pipe lining is the fix for channeled cast iron under a 1970s slab and for cracked ABS that is still round, and it is the natural choice under HOA hardscape. A cured-in-place liner from the cleanout rebuilds the pipe without opening the slab, the driveway or the slope.
• Pipe bursting is for a crushed section, a belly in settled fill, or a shared lateral that needs to be upsized. Two small pits and a new fused polyethylene pipe on the old alignment.
• Sectional point repair handles one bad fitting or one crushed spot on an otherwise sound line, which is the most common Lake Forest repair.

Crews doing trenchless sewer repair in Lake Forest work inside HOA and water-district rules every week, and a good one brings both into the quote.

What the job looks like

A camera inspection maps the line and marks every defect on the ground with its depth. Hydro jetting clears roots, scale and grease so the pipe wall can be seen and, if the line is being lined, so the resin bonds to clean pipe. Lining runs from the cleanout at the house; bursting needs a small pit at each end of the run. Most residential jobs finish in a day, with water off for a few hours during a liner cure, and you should receive the before-and-after footage. how a trenchless repair is sequenced from inspection to cure is worth reading before the crew arrives.

To compare installers who have been checked for licensing and CIPP training, you can find a verified CIPP contractor through an independent directory.

Pipe Bursting in Lake Forest

How pipe bursting works

A steel cable is threaded through the old sewer line from a pit at one end to a pit at the other. A cone-shaped bursting head, with new high-density polyethylene pipe fused to it, is pulled through by a hydraulic unit. The head splits the old clay or cast iron outward into the soil and the new pipe follows in the same alignment at the same depth. The result is a single fused length of pipe with no joints for roots to find.

When bursting is the right call

• Collapsed sections — a liner needs a host pipe to hold its shape; a collapsed run has none.
• Bellies — a low spot that holds water stays a low spot after lining. Bursting lays new pipe on a fresh bed.
• Undersized lines — bursting can upsize a 3-inch lateral to 4 inches; lining slightly reduces diameter.
• Badly deformed pipe — Orangeburg that has flattened, or cast iron with most of its bottom gone.

What the job looks like

One pit at the house or cleanout, one at the property line or the street connection, each a few feet square. Utilities that cross within a foot or two of the sewer path are located and potholed first. The pull takes an hour or two; the whole job, including fusing, connections, inspection and backfill, is usually one day.

Permits and the street

If the downstream pit is in the sidewalk, parkway or street, a right-of-way permit and restoration to city standards are required in addition to the plumbing permit. If the connection at the main is replaced, the city inspects it before the pit closes. Confirm who is handling this before work starts.

ZIP codes served in Lake Forest

Pipe Bursting is available throughout Lake Forest, including ZIP codes 92630.

More trenchless services in Lake Forest

Questions we hear in Lake Forest