Excavation & Underground Utilities in Parsippany-Troy Hills, NJ
JWSR LLC is a local, licensed and insured excavation and utility contractor working in Parsippany-Troy Hills and across Morris County. Parsippany-Troy Hills sits about 21 miles south of our Hamburg yard, roughly 30 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 21 miles from Parsippany-Troy Hills, working across Morris County. About 88.9% of Parsippany-Troy Hills's land area sits inside a public water delivery area, served by Parsippany-Troy Hills WD, and the rest is on private wells. About 83.8% of the town is inside a sewer service area, the largest run by Parsippany Troy Hills STP, 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.
Around Parsippany-Troy Hills, we deal with a lot of ledge rock
Parsippany-Troy Hills sits in the New Jersey Highlands, where the bedrock is ancient, hard gneiss and granite that often sits close to the surface. Because that rock resists erosion, digging here regularly runs into ledge, and it takes the right equipment to get through it.
We bring in the bigger machines and the tools to break out and remove ledge rock so the job keeps moving, whether it is a foundation, a utility trench, or a septic field. Rocky ground is where experience really shows. 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: Call 811 before you dig. Every job, every time · Understanding excavation costs
Sources: New Jersey's Highlands geology (gneiss & granite bedrock) · NJ Geological Survey bedrock map of Sussex County
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.
As a township, Parsippany-Troy Hills has the kind of larger properties where septic systems, grading, drainage, land clearing, and long driveways come up most. 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 properties in Parsippany-Troy Hills
Septic Installation in Parsippany-Troy Hills
New septic systems, replacements, and repairs, permitted and done right.
Learn more →Grading & Drainage in Parsippany-Troy Hills
Fix standing water, regrade your lot, and protect your property from erosion.
Learn more →Land Clearing in Parsippany-Troy Hills
Clear brush, trees, and stumps and get your lot ready to build.
Learn more →Driveways, Roads & Lots in Parsippany-Troy Hills
New driveways, road repairs, and parking lot redos built on a base that lasts.
Learn more →Excavation in Parsippany-Troy Hills
Site prep, dig-outs, trenching, and land development for any project.
Learn more →Sewer & Water Lines in Parsippany-Troy Hills
Emergency sewer and water line dig-outs, repairs, and full replacements.
Sewer & Water Lines in Parsippany-Troy Hills →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 Parsippany-Troy Hills
The biggest single stretch of building in Parsippany-Troy Hills came in the 1960s, though the township's 23,215 housing units are spread fairly wide across the decades.
The bigger issue here is the 56% built between 1940 and the early 1970s. Orangeburg pipe was rated fifty years and routinely goes oval and collapses closer to thirty, so in a township weighted this heavily toward that window it is less a question of if than which street.
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 Parsippany-Troy Hills is on public water, but not all of it
About 88.9% of Parsippany-Troy Hills’s land area sits inside a public water purveyor’s delivery area, all of it served by Parsippany-Troy Hills WD. Sewer coverage tracks it closely, about 83.8% of the town, so most properties here are either on both or on neither. 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
Parsippany runs its own water utility, the Parsippany-Troy Hills Water Department (PWSID NJ1429001). The water comes from 19 active groundwater wells inside the township, drawing on a glacial sand and gravel aquifer, and homes east of I-287 get supplemental water from the Jersey City Reservoir at Boonton in the summer months. The township also keeps emergency interconnections with Boonton, Denville and Mountain Lakes.
Unusual for New Jersey and worth saying on the page: the township sewer utility maintains the sanitary lateral from the cleanout in front of the house all the way to the plant, so a Parsippany homeowner's responsibility ends at the cleanout, not at the main. The utility asks residents with connection problems to call 973-428-7592 before hiring a contractor. Sewer is also township-run. The Parsippany-Troy Hills Sewer Utility operates roughly 370 miles of sewers and 25 pump stations, plus its own advanced wastewater treatment plant with an average daily flow of 9 million gallons, discharging at the confluence of the Rockaway and Whippany Rivers. The plant is a regional one: it also treats wastewater from Mountain Lakes, East Hanover, Montville and part of Denville under agreement. Do not publish a plant capacity number. The township's current sewer page says the plant is 36 MGD, but older township material and a search snippet of the prior page version say 16 MGD, and I could not reconcile the two from primary sources. The 9 MGD average daily flow is consistent everywhere; stick to that.
Parsippany's 2026 service line inventory, posted on the township site, lists 14,116 water service lines and not one of them is lead: my line-by-line tally of the 70-page inventory PDF found 13,885 non-lead lines and 231 categorized G (galvanized), zero lead and zero unknown. New Jersey's replacement law counts galvanized as lead service lines, so those 231 homes are the ones getting township replacement notices.
The galvanized problem clusters in Mt. Tabor, the township's oldest neighborhood. The Water Department has a phased Mt. Tabor Water Infrastructure Replacement program mapped street by street, with replacement years running from 2023 (under contract) through 2029, and the map's service line legend is specifically for lines flagged Galvanized Requiring Replacement.
Most of Parsippany-Troy Hills is inside a sewer service area
About 83.8% of Parsippany-Troy Hills’s land area falls inside a mapped sewer service area. The largest share goes to Parsippany Troy Hills STP, with 4 smaller works alongside it. 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.
If you find water surfacing in Parsippany-Troy Hills, call this first
Before you call us, get the water shut off. A leaking service line washes ground out from under whatever sits above it and keeps running until somebody turns the curb valve.
In Parsippany-Troy Hills that is Parsippany-Troy Hills Water Utility, on 973-263-7099.
The township runs its own water utility and says it plainly: report a leak or main break to the Water Department during business hours, and to the Parsippany Police at 973-263-4300 after hours. Utility hours run Monday to Thursday 7:30 to 4, Friday mornings only.
Once the water is off, the repair is ours. What replacing a water service involves, or what the first hour of a break looks like.
Read off Parsippany-Troy Hills Water Utility's own published page and re-checked periodically. If your bill carries a different name, that name is the one with your curb key. Much of New Jersey is served by New Jersey American Water, 1-800-272-1325, 24 hours.
Working in Parsippany-Troy Hills
How fast can you get to Parsippany-Troy Hills?
Parsippany-Troy Hills is roughly 30 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 install and repair septic systems in Parsippany-Troy Hills?
Yes. Septic installs, repairs, and failed-field excavation are some of the most common jobs we do in Morris County townships like Parsippany-Troy Hills. We handle the dig, the tank, and the grading, and we leave the yard clean.
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 Parsippany-Troy Hills
Need excavation in Parsippany-Troy Hills?
Free on-site estimates and 24/7 emergency service, about 30 minutes from our Hamburg yard. Call 862-268-2510.
Call 862-268-2510