Excavation & Underground Utilities in Riverdale, NJ
JWSR LLC is a local, licensed and insured excavation and utility contractor working in Riverdale and across Morris County. Riverdale sits about 17 miles southeast of our Hamburg yard, roughly 25 minutes out, so we can get a crew and the right machine there without a long wait.
JWSR LLC is a licensed and insured excavation and utility contractor based in Hamburg, New Jersey, about 17 miles from Riverdale, working across Morris County. About 62.1% of Riverdale's land area sits inside a public water delivery area, served by Riverdale Boro WD, and the rest is on private wells. About 82.5% of the town is inside a sewer service area, the largest run by Two Bridges SA, and the rest is on septic. We do the underground work either situation calls for: water and sewer service lines, septic, storm drainage, excavation and restoration. Call 862-268-2510 for a free on-site estimate.
Replacing aging driveways and walls in Riverdale
Riverdale is a long-established community, and in older neighborhoods the driveways, retaining walls, and drainage that went in decades ago are wearing out. A big part of what we do here is tearing out cracked, failing work and rebuilding it to last, often on tight lots where access takes real care.
We also do a fair amount of site work where older properties are being rebuilt or expanded. That is a big part of what we do here, but it is far from the only thing. We still handle sewer and water lines, septic, grading, driveways, and emergency digs across town.
Helpful guides: Orangeburg pipe: the ticking clock under pre-1975 homes · What to expect when you get an estimate from us
Morris County runs from busy suburban neighborhoods to wooded hillsides, and the work follows suit, from tight utility repairs to regrading sloped lots that will not drain.
In a built-up borough like Riverdale, the common jobs are sewer and water lines, underground utilities, and excavation in tighter spots. Whether it is an emergency sewer or water line dig-out, a septic system, a lot that will not drain, or a new driveway, we bring our own equipment and an operator who knows the ground in this part of Morris County. We show up when we say we will, and we leave your property graded and clean.
Services for homes and businesses in Riverdale
Sewer & Water Lines in Riverdale
Emergency sewer and water line dig-outs, repairs, and full replacements.
Sewer & Water Lines in Riverdale →Utility Construction & Repair in Riverdale
Water, sewer, and underground utility installation, trenching, and emergency repair.
Learn more →Excavation in Riverdale
Site prep, dig-outs, trenching, and land development for any project.
Learn more →Driveways, Roads & Lots in Riverdale
New driveways, road repairs, and parking lot redos built on a base that lasts.
Learn more →Grading & Drainage in Riverdale
Fix standing water, regrade your lot, and protect your property from erosion.
Learn more →Retaining Walls in Riverdale
Block and boulder retaining walls that hold back soil and look sharp.
Learn more →Some of what we have been building
A look at recent excavation, utility, and site work from around Morris County and northern New Jersey.
What tends to be in the ground in Riverdale
The biggest single stretch of building in Riverdale came in the 2000s, though the borough's 2,038 housing units are spread fairly wide across the decades.
Roughly 33% dates to the 1940s through early 1970s. That is the Orangeburg window, and pipe from it is past the age where it can be counted on.
Against that, 44% of Riverdale has gone up since 2000. Newer pipe is well inside its design life, and what we actually get called for on those properties is grading, drainage and septic fields sized for the soil rather than the household.
Housing-age figures: US Census American Community Survey 2019–2023 5-year estimates, table B25034. Pipe service lives are documented industry figures. What is actually under any one property varies, so we confirm it on site before we quote a replacement.
Most of Riverdale is on public water, but not all of it
About 62.1% of Riverdale’s land area sits inside a public water purveyor’s delivery area, all of it served by Riverdale Boro WD. Sewer actually reaches further than water here, about 82.5% of the town against 62.1%, which is the less common way round. It means properties drawing from a well while discharging to a public sewer, so the two sides of the house answer to different owners. All of this is land area rather than houses, and a main running past a property does not mean the property is on it, since plenty kept the well after the main went in.
What replacing a water service involves, and who supplies water in every town we cover.
Source: NJDEP Purveyor Service Areas of New Jersey, edition 2025-07-03, measured against US Census municipal boundaries. NJDEP maps actual delivery areas for public community systems, meaning fifteen or more year-round connections; smaller shared and association systems are real but do not appear. Percentages are share of land area, not share of homes, and a state file can lag a change of ownership. The name on your bill beats any map, including this one.
The part that changes the job here
Riverdale drinks surface water, which is unusual for this region and comes from a long way off. The borough system is supplied through the North Jersey District Water Supply Commission's Wanaque system, a body created in 1916 that runs the largest regional water supply in the state: more than 95 square miles of watershed, two major reservoirs and a filtration plant rated at 210 million gallons a day. Riverdale is also a link in somebody else's chain, because Pequannock's Cedar Crest system buys that same water through Riverdale. On the sewer side the borough is on the Two Bridges authority. So neither half of the job here is answered inside the borough line.
a borough system fed from the Wanaque reservoirs rather than from any well in Riverdale
Most of Riverdale is inside a sewer service area
About 82.5% of Riverdale’s land area falls inside a mapped sewer service area, treated at Two Bridges SA. A service area is where sewer is planned and permitted, not a promise that a main runs past your house, so the only way to settle it for one address is to look. Outside it, septic.
Sewer connections, laterals and septic work are all things we do, and which one you need is usually settled in one phone call. Sewer and water line work.
Source: NJDEP Sewer Service Areas, read 2026-09-08, measured against US Census municipal boundaries. Percentages are share of land area, not share of homes. Most polygons in this layer are small on-site treatment works for a single school, campground or business, so read the percentages rather than the count.
Working in Riverdale
How fast can you get to Riverdale?
Riverdale is roughly 25 minutes from our Hamburg base, so we can usually be out for an estimate quickly, and for a sewer or water line emergency we start moving right away, day or night.
Do you handle sewer and water line work in Riverdale?
Yes. Sewer and water line repair and replacement is core work for us in built-up parts of Morris County like Riverdale, including tight-access digs and emergency line breaks. Many homes here built between 1945 and 1972 still have Orangeburg sewer laterals, a wood pulp and tar pipe that fails with age, and replacing those laterals is routine work for us.
Are you licensed and insured to work in Morris County?
Yes. JWSR LLC is a licensed and insured New Jersey contractor, and we work across Morris County and six other counties. We pull the permits, mark out, and do it by the book.
We also serve these towns near Riverdale
Need excavation in Riverdale?
Free on-site estimates and 24/7 emergency service, about 25 minutes from our Hamburg yard. Call 862-268-2510.
Call 862-268-2510