John J. Cahill Inc.
Serving Chicago's North Shore since 1890.

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Chicago North Shore Plumbing

Cahill has been providing Chicago's North Shore with expert plumbing services since 1890. You can count on us for all your plumbing needs, including installation, repair, and service. Please contact us to learn more. Our services include:


  • Hot Water Heaters
  • Faucets
  • Sump Pumps and Backup Sump Pump Systems
  • Flood Control Systems
  • Water Pressure Problems
  • Instant Hot water
  • Bathroom and kitchen work, including: garbage disposals, dishwashers, and toilets
  • Water filters
  • Sewers
  • Frozen Pipe Thawing
  • Backflow (RPZ) preventer certification

In addition, we offer:


  • State-of-the-art diagnostics, including remote video cameras
  • Fixture showroom at our Evanston location

Keep Your Basement Dry This Season!

Spring flooding is one of the biggest threats to basements, and it pays to be prepared. Here are 4 ways to keep your basement dry and your valuables protected:



1 » Gutters

Clean, well-positioned gutters divert water away from your basement. Keep your gutters clog-free by routinely removing leaves and other debris. Make sure downspouts extend at least 4 feet from the side of your house, and that the initial 3 feet of soil next to your foundation slope away from the house.




2 » Sump Pump

A sump pump is one of the most effective and affordable lines of defense against flooding. This device is installed in a pit in the most vulnerable area of your basement. When water flows to that area, it gets captured and pumped out before it rises to the level of the floor.

To install a sump pump, a small area of the concrete floor is cut out and a 40" hole is dug. Next, a 10" layer of gravel is laid at the base of the pit. An 18" x 30" basin is installed on top of that and filled in with more gravel. Then the surface is patched with concrete to match the rest of the floor. Drain lines are run from the pump up above the foundation, out through the wall and away from the house. To prevent water from backing up into the house, a check valve is added to the drain lines.

3 » Interior Drain Tile

If you have chronic flooding issues, supplementing your sump pump with drain tile may be the answer. Drain tile is a perforated piping system that collects water as it tries to seep into your home and channels it to the sump pump. To install drain tile, a trench about 4" wide is excavated around the interior perimeter of your basement.

Most new homes feature drain tile and sump pumps, but many of the area’s older homes were built long before these systems were introduced.



4 » Flood Control System

If water comes up through your floor drain, it could mean your city’s sewer system is being overtaxed. Here are two solutions for this problem:


Overhead Sewer System


This system positions your sewer line higher than the city main. Your existing waste stack is relocated to exit through the basement wall rather than the basement floor. A trench is dug outside your home to tie the new overhead sewer line into the existing one, and the old sewer line is capped. A basin is then installed to eject any plumbing waste into the new overhead system.


Yard Flood Control System


In this scenario, a pre-cast manhole basin housing a heavy-duty ejector pump and a check valve is installed in your yard. Positioned along the existing waste line, the basin stops water backups before they reach your home and forces them back into the city system. All installation is done outside the home.


A proper diagnosis is the first step in addressing basement flooding. Contact us for help in determining the best solution to keep your home clean and dry.

Did You Know?

  • Illinois state law requires backflow protection devices be installed for lawn sprinklers, boiler feeds, and fire protection. These devices keep contaminated water from entering our potable water. Cahill installs, inspects and certifies these devices.
  • A yard that contains plenty of trees or shrubbery means your sewer should be rodded annually.


John J. Cahill, Inc. is a member of the Plumbing Council of Chicagoland