The Best Work
Gets Buried.
Water mains. Sewer taps. Storm drainage. Tier 2 septic. Nobody sees it when it's done — but every building on the site stands on it. Run out of our Easley shop, licensed in South Carolina and Georgia, and photographed before backfill.
Water · Sewer · Storm · Septic
Water Main Taps & Hot Taps
Live-main connections without shutting the system down. Tapping sleeves, valves, and pressure connections done under license.
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Ductile Iron & C900 Water Lines
Black bolted ductile iron and big-bore C900 PVC — domestic service and fire lines, bedded, restrained, and pressure-tested to spec.
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Sanitary Sewer Installation
Gravity sewer mains, laterals, and manholes — laser-graded fall, tied into municipal systems clean the first time.
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Storm Drainage Systems
PVC and black corrugated HDPE storm runs, catch basins, and drainage structures — the package that gets your site through inspection.
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Tier 2 Septic Systems
Engineered and conventional septic under a South Carolina Tier 2 license — commercial-scale systems, pump tanks, and drain fields.
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Commercial Grease Traps
Interceptors and grease traps for restaurants and QSR builds — sized, set, plumbed, and inspection-ready.
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Most Contractors
Can't Legally Touch This
Tapping a live water main. Boring under a road that can't be cut. Running ductile iron beneath a parking lot. This work takes state license classifications most general contractors don't hold — so most can't pull the permit for it.
We hold nine general-contractor classifications plus a mechanical license and a Tier 2 septic installer license — every number is public record — across South Carolina and Georgia, based in Easley. When RO Unlimited does your sitework, the underground package is permitted and delivered under one license holder — one contractor accountable from first cut to final tap.
License documentation available on request for prequalification and lender packages. Download our capability statement (PDF).
Trench To Backfill
Locate & Design
Utility locates, soil review, and a run plan that matches the civil drawings — before a bucket touches dirt.
Cut & Install
Open the trench, bed the pipe, set the structures — under our own license, with the inspector on our calendar.
Test & Inspect
Pressure tests, mandrel and vacuum tests, municipal inspections — documented and passed before anything closes.
Backfill & Document
Every run photographed before backfill. You get proof of what’s under your site — forever.
Shot Before Backfill
Underground work only gets seen once. We photograph every run, tap, and tank before it's covered — proof of what's under your site.
Licensed for the underground
Water and sewer lines, boring under what can't be cut, public power distribution and commercial septic — the classifications that put the whole underground package under one license holder.
Grading
Clearing and grubbing, mass excavation, embankment, building pads, site balancing and finish grading.
Water & Sewer Lines
Water mains, taps and services, sanitary sewer, storm drainage, force mains and lift stations.
Boring & Tunneling
Directional boring, jack-and-bore casings and tunneling under roads, rail and structures that can’t be cut.
Public Electrical Utility
Overhead and underground electrical distribution for utilities — poles, conduit, duct banks and vaults.
Septic & Commercial Systems
Conventional systems plus pump systems, grease traps, curtain drains, elevated and mounded systems, and all commercial onsite systems.
Developer FAQ
Yes — that’s exactly what our water & sewer license covers. We perform hot taps on live mains with tapping sleeves and valves, so the surrounding system stays in service while your property gets connected.
RO Unlimited is. Underground utilities are permitted, inspected and warranted under our own license classifications — the ones most general contractors don’t hold. Crews are scaled to the job; the contractor accountable for the result is RO.
South Carolina is specific about this. A Tier 1 installer may install gravity-fed residential systems only, and is not authorized to conduct repairs on existing systems at all. Tier 2 adds pumps, grease traps, curtain drains, elevated and mounded systems, and every commercial, large, and community onsite wastewater system — plus repairs. That is the South Carolina license line commercial work sits on, and most residential installers don’t hold it. Tier 1, 2, and 3 are a South Carolina classification, so on a job across the line we work under that state’s onsite program instead — we hold licensing in both states.
We run out of Easley, so the Greenville area is home ground and most weeks our iron never leaves it. Past that we work — upstate South Carolina and northeast Georgia — and we are licensed in South Carolina and Georgia, which matters because the permitting path changes the moment you cross a line. For a job worth mobilizing for, distance is a scheduling conversation, not a no.
Yes. Site development, underground utilities, and vertical construction can run under one contract with one license holder accountable for all of it.
Put Your Utilities
In Licensed Hands
Send the civil drawings, or just tell us what the site needs. We'll scope the underground package — and the dirt work around it — with one number and one accountable contractor.