Water services
Water lateral trenching and installation to the authority's specifications.
Services
Water, sanitary, storm and conduit trenching in your neighborhood and across the Delaware Valley, installed to spec and backfilled right.

Capabilities
Water lateral trenching and installation to the authority's specifications.
Sewer lateral installs and replacements with proper bedding and slope.
Storm runs, inlets and outlets to plan.
Electric, telecom and gas trenches excavated for the utility or your electrician.
We work to the local water/sewer authority's specs and inspection steps.
Trench protection used where depth and soil require it.
Process
Tell us the project, the property and the timing. We'll say plainly whether it's a fit.
We walk the site, follow the water, check access and note anything that needs review.
A written scope built for your project — inclusions, exclusions and assumptions spelled out.
Utilities marked, protection set, then the work — with check-ins, not surprises.
Grade and drainage verified with you, punch items closed, site left clean.
What's included
Honest exclusions
Why Sentinel Earthworks
Discipline, integrity and follow-through — the standard we brought home from service. Service Disabled Veteran Owned Small Business.
Someone is posted and paying attention: elevations checked, protected areas flagged, conditions documented.
Homeowners get plain answers and a protected property. GCs get submittals, look-aheads and grade that holds to plan.
FAQ
Yes, typically from the cleanout to the connection point the authority specifies. We'll confirm requirements during scoping.
Yes — we follow their specs and schedule inspections as required.
We work across the Delaware Valley — Pennsylvania, New Jersey, Delaware and Maryland. Outside that? Ask — we'll tell you honestly whether it makes sense.
It depends on the job and the municipality. We'll tell you during scoping what's needed and who typically pulls it; engineered or permitted work is coordinated with your engineer or GC.
As deep as the spec and frost depth require. Deeper trenches get proper protection; very deep work gets extra review.
Tell us about the property and we'll set a time to walk it.