A perimeter drain under the slab that catches the water your Summit hillside pushes against the walls and sends it to a sump pump.
In Summit, the wall facing uphill is often the one that weeps at the base after every heavy rain, while the downhill side stays dry. An interior drain deals with that by catching water at the footing before it spreads across the floor. The crew saws a trench along the inside of the affected walls, sets perforated pipe in clean stone, and pitches it to a sump pit. A dimpled membrane can go up the wall so any seepage drops behind it into the drain. On some Summit lots only one or two walls need it, which keeps cost and disruption down.
Rock can change the plan. Parts of the ridge have basalt or dense stony soil just below the slab, which makes trenching slower and sometimes limits how deep a sump pit can go. A contractor familiar with the area will usually probe or open a test spot before committing to a pit location. Ask what pump they are installing, its capacity, whether the pit lid is sealed, and whether a battery backup and high water alarm are included. Summit's tall trees bring down power lines in storms, and a backup keeps water out while the lights are off.
Discharge needs real thought here. The City of Summit does not allow sump pumps to connect to the sanitary sewer. The pump should tie into the city storm sewer where one is available, or discharge on your own property far enough from the house that the water does not soak back toward the foundation. Running a line to the curb can freeze into ice on the street, which the city treats as a hazard. On a steep lot, the contractor also has to make sure the outlet does not simply send water onto a downhill neighbor's yard.
Not always. On sloping lots the water often comes from one direction, so a partial perimeter on the uphill walls can be enough. A contractor should explain why they are recommending a full or partial system.
It slows the work and can add cost, since rock has to be broken out by hand or with tools. Ask the contractor how their quote handles rock so there are no surprises midway through the job.
Into the city storm sewer where available, or onto your own property away from the foundation. It cannot go into the sanitary sewer. If you are unsure what is available on your street, the city's Engineering Division can help.
About a third of Summit's homes were built in 1939 or earlier (median year built 1953), so many basements have older foundations.
api.censusreporter.orgDuring Ida on Sept 1, 2021, the city warned that flash flooding conditions were present throughout Summit, and schools closed the next day.
patch.comErosion and flooding along Salt Brook near Springfield Avenue was before Common Council in July 2026, with streambank work tied to a DEP permit.
nj21st.comDigging along the outside of a Summit foundation to seal the wall and add a footing drain, usually on the side that takes runoff from uphill.
Injection repairs for leaking cracks in poured walls, and a closer look at cracks in older Summit foundations that may point to movement.
Sealing the damp crawl spaces under Summit additions, sunrooms, and older wings to stop musty air and protect the framing.
Pumping out, drying, and clearing out a Summit basement after a storm, a failed pump, or a backup, then finding out why it happened.