“After noticing a sudden increase in my water meter, I called Terry Nelson Plumbing for help. They arrived quickly and found a serious leak I couldn't locate myself-very impressed with their service!”
James R.St. John
VerifiedFast slab leak detection & repair in St. John, carried out by licensed local crews who know St. Louis County. Our experts are skilled at diagnosing and repairing leaks beneath concrete slabs, which can be tricky due to their hidden nature. We provide a clear flat-rate quote before any work begins, ensuring transparency and confidence in our services.
Licensed · Upfront options · Clean work areas · Written guarantees
These are our most frequently served ZIP codes. Nearby areas may also qualify—call if you do not see yours.
Charlack · Sycamore Hills · Bel-Ridge · Breckenridge Hills · Woodson Terrace · Overland · Edmundson · Bel-Nor · Vinita Park · Bellerive Acres · Kinloch · Berkeley
Breckenridge Hills · Woodson Terrace · Bel-Ridge · Charlack · Sycamore Hills · All Missouri cities
“After noticing a sudden increase in my water meter, I called Terry Nelson Plumbing for help. They arrived quickly and found a serious leak I couldn't locate myself-very impressed with their service!”
James R.St. John
Verified“The crawl space leak detection they did was excellent. Terry Nelson Plumbing provided a warranty, which gave me peace of mind knowing I could call them back if needed.”
Ethan R.Breckenridge Hills
Verified“Their commercial leak detection service was a breath of fresh air. Terry Nelson Plumbing provided an honest quote with no upselling, and the work was done efficiently.”
Sam O.St. John
VerifiedA real dispatcher is available if your question is not answered here.
Call +18667598259 →Most St. John calls are scheduled the same day, with 24/7 emergency response across St. Louis County.
We quote a flat rate up front - typically in the range shown below - and you approve it before we begin.
Call now for fast, licensed leak detection anywhere in St. John and St. Louis County.