Hunterdon County · 25 of 26 towns NJDEP Tier 1 Action level 4.0 pCi/L Free for homeowners — paid by the crews
Hunterdon RadonTesting & mitigation

Branchburg, Branchburg Township, Somerset County

Drain tile and sump-based depressurization in Branchburg

Sealing the sump and drawing suction through an existing perimeter drain loop. Efficient where the drainage is already there.

Branchburg owners ask about drain tile and sump-based depressurization more than you would think for a town this size.

The situations this follows from

  • A basement that has both a water problem and a radon problem
  • A drain-tile loop that already runs the full perimeter
  • An interior perimeter drain or a French drain around the basement floor

Why this comes up in Branchburg

Here is what makes Branchburg particular: it genuinely depends on the neighbourhood. Where a Branchburg address is on a well, it draws from the same Newark Basin shale that runs under Flemington.

Branchburg Township, Somerset County — the state's own numbers

40% of the 4,997 test results NJDEP holds for Branchburg Township, Somerset County were at or above the 4.0 pCi/L action level — 2,005 of them. That puts it in Tier 1 — high potential.

Extensive late 20th century single-family development with full basements, alongside older farm properties and village pockets.

Practicalities in Branchburg

Suburban lots with good side access on most of the newer housing.

Construction permits go through Branchburg Township, Somerset County, and installing radon mitigation for a fee anywhere in New Jersey requires NJDEP certification.

The usual approach

Where a perimeter drain already circles the footing, it is an existing distribution network for suction. The pit gets a sealed, gasketed cover with a viewing port and a pipe fitting, and the fan draws through the loop. It is often the cheapest effective system in a house that has one — and it has to be built so the pump can still be serviced.

Typical cost in Hunterdon County, NJ

$1,400 – $2,800 — typical range, not a quote. What your building needs can only be settled by a certified business that measures it on site.

What it costs comes down to the foundation, the number of suction points, and where the pipe can run.

Who is allowed to do this in New Jersey

Under N.J.A.C. 7:28-27 this is not work a general contractor may take on. It requires a business certified by NJDEP for radon mitigation, with a certified mitigation specialist directing the work. We verify that on the state register, note the date, and route accordingly — but a verified certification is a fact, not a recommendation.

Not sure whether your number is a problem?

Write down what the system is doing and what the re-test said. We'll get it to crews who diagnose rather than guess.

Get quotes in Branchburg →

Related

Also common in Branchburg

Other work in Branchburg

Same ground, different question.

Drain tile and sump-based depressurization nearby

Neighbouring towns on the same ground.