← All case studies
Leak Seal & Waterproofing

Cistron Water Leak Repair

Eagle, Idaho Mar 18, 2026

Download project slides
Water leak causing erosion.
The problem

What we found

This site presented two related issues. Water was leaking around the main pipe entering the cistern, escaping through concrete at the penetration. Over time, the leak caused deep erosion, creating a large void beneath the pump house slab and contributing to slab settlement.

The solution

How we repaired it

After draining the cistern below the leak elevation, our technician used proper confined-space safety measures to access the penetration. We installed a combination of oakum and water-activated polyurethane to seal the annular space, forming a flexible, durable gasket. Once the leak path was sealed, we filled the void beneath the pump house and lifted the settled concrete to restore support.

Explore Leak Seal & Waterproofing →
The result

What changed

The penetration leak was sealed and the slab was stabilized. By pairing waterproofing and void fill, the repair corrected both the water source and the resulting settlement.

Have a similar problem?

Let us test what is underneath.

We assess the site and test the soil before recommending a repair.

More project experience

Recent case studies

See all projects →
Installing helical tiebacks with a mini excavator
Foundation RepairBoise Foothills, Idaho

Complex Foundation Repairs

A newly developed neighborhood was built on 12 feet to 35 feet of fill material. Over the course of the first few years homeowners experienced differential foundation settlem…

Read the project