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Do I need a permit to replace a well pump or drill a well in NJ?

New Jersey permits the well, not the pump. Drilling a new well, deepening an existing one, or sealing an abandoned one takes an NJDEP well permit, and the licensed driller files it, not you. Swapping a pump, a pressure tank or a switch in an existing well does not need one.

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What New Jersey actually permits

The thing the state regulates is the hole in the ground, not the equipment hanging in it. New Jersey's well construction rules exist to protect groundwater, so anything that opens a new path from the surface down to the water table, or changes or closes an existing one, is a permitted act. Hold onto that logic and the rest of this page follows from it.

Making a new hole is permitted. Making an existing hole deeper is permitted. Hydrofracturing it, re-casing it, or otherwise changing how it is built is permitted. Filling and sealing one you are finished with is permitted. Pulling a pump out of a completed well and setting a different pump back in the same hole is not. Neither is a pressure tank, a pressure switch, a control box, a well cap, or the line running from the well to the house.

That catches people both directions. Homeowners who assume they need permission to fix a broken pump find out they do not, and homeowners who assume they can quietly put a new well in on their own land, or fill in the old one with rocks and topsoil, find out they very much cannot. The sealing side is the one people miss most, and it is the one that surfaces years later at a closing.

Five jobs, and which ones need paper

A new well. A brand new well on a property, whether it is the first one or a second one because the original went bad, means a well permit application to the NJDEP before anybody sets a rig. It carries siting rules: the well has to sit a set distance from a septic disposal field, from the septic tank, from sewer lines, from property lines and from whatever else the state or your health department names. A hundred feet from a septic disposal field is the number to plan around in New Jersey. On a small older lot that single requirement is the hardest part of the whole job, and where the parcel cannot meet it you are into health department review and possibly a variance before a bit turns.

A replacement well and a deepening. A replacement well, meaning a new hole drilled because the existing one failed, gets permitted the same way a new one does, and it comes with an obligation to properly seal the old one rather than leave it open. Deepening an existing well is an alteration to a permitted structure and needs its own permit. So does hydrofracturing in most cases, because you are changing how the well is built and how it behaves. If somebody offers to deepen or frack your well and never mentions paperwork, ask the question out loud.

Decommissioning. Sealing a well, called decommissioning or abandonment, is permitted work done by a licensed driller who fills the borehole with grout from the bottom up so it cannot act as a pipe carrying surface contamination straight down to the aquifer. Dropping a boulder in it and pouring a slab over the top is not decommissioning. This one matters at a sale, at a subdivision, and any time a property comes off a well and onto a public main, and a buyer's attorney or a health department will ask for the report.

A pump, tank or switch. Pump replacement, a new pressure tank, a new pressure switch, a new well cap, a new pitless adapter, fresh drop pipe and wire: no state well permit for any of it. What the work does require is a licensed New Jersey pump installer, which is a license in its own right. Ours is # 2198. Some towns want an electrical or plumbing permit for parts of the job, particularly new wiring or an open trench, and that is a local question rather than a state one.

Who files what, and who is licensed to do it

You do not file a well permit. In New Jersey the application goes in under the license number of the well driller who is going to do the work, and the finished well is certified back to the state under that same number. That is deliberate. The state wants a licensed professional accountable for how the hole was built, not a homeowner who has never stood next to a drill rig.

Ackerman does not own a drill rig, and we say so plainly. On a new well or a deepening we bring in a licensed New Jersey driller we have worked with for years, and that driller pulls the drilling permit under their own license and files the well record when the hole is finished. Everything from the pump up is ours: the pump sized for the well that actually got drilled, the drop pipe and wire, the pitless, the trench, the pressure tank, the wiring, the disinfection and the sampling.

Your job as the property owner is short. Give access, sign what the driller puts in front of you, know where your septic field is before anybody guesses at it, and collect copies of everything at the end. That last item is the one people skip, and it is the one that costs money later.

NJDEP, the county and your town all get a say

Two or three layers can touch a well job. The NJDEP handles well permitting and driller and pump installer licensing statewide, and that layer is the same in every town. Underneath it, county and municipal health departments run their own ordinances, and those are not the same everywhere. That gap is where most of the confusion in this business lives.

In practice, some health departments want their own application and their own inspection on a new well. Some want a witnessed water sample before they will sign off. Some carry setback rules stricter than the state minimum. Some have a resale inspection ordinance that has nothing to do with drilling at all. A job that is routine in one Passaic County town picks up an extra review in a Sussex County town twenty minutes up the road. And where our service area falls inside the Highlands Preservation Area, new construction can draw an additional layer of review that a shore town never sees.

So the honest answer on local rules is that they vary, and you should call. Your municipal or county health department will tell you in one phone call whether they want anything from you for the work you are planning, and their answer is the one that governs your property. Do not take a neighbor's experience in another town as your rule.

On timing, plan in weeks rather than days for a new well, and expect the local health review, if your town does one, to be the piece that sets the schedule rather than the state permit. Emergency work on an existing well does not wait on any of it, because a pump swap is not permitted work. That is the practical reason a no water call gets handled the same day and a new well gets a calendar.

The well record, and why you want a copy

A well record is the driller's report on what the hole actually is. Total depth. Depth to bedrock. How much casing went in and how deep it was seated. The grout. Where the water bearing fractures came in. The yield the driller measured at the end, the static water level, the date, and the license number of the person who built it. New Jersey requires that record to be filed with the state, and the state keeps it.

It is the single most useful document a well owner can hold, and most people have no idea they can get one. With a well record in hand a pump gets sized against a known setting depth instead of a guess, a diagnosis starts from a known static level, and a buyer's inspector gets a straight answer instead of a shrug. Without it, the first hour of any serious well job goes to rediscovering things somebody already wrote down in 1988.

Get a copy. Ask the driller for it at the end of the job, keep it with the deed and the septic paperwork instead of in a basement drawer, and photograph it with your phone while you are at it. For a well you already own, the state maintains well records and you can request what is on file for your address. For wells put in before records were consistently kept, and there are plenty of those in the older lake communities up here, there may be nothing on file at all. The answer then is to measure the well yourself and start the file.

What happens at a closing with no record

No well record at a sale is not fatal, and it is not rare either. What it does is hand the buyer's side a stack of open questions at the worst possible moment. How deep is it. Where is the casing seated. Was the old well ever sealed. Is there a second well on this property that nobody mentioned. Every question that cannot be answered on paper turns into a request for a credit.

The Private Well Testing Act already requires a water test at the sale of a home served by a well, so a lab report is coming either way. The record is a different document and no amount of testing produces it. If your town runs a resale well and septic inspection ordinance, and several around here do, the inspector will ask for the record directly and note its absence in writing.

If you are a year out from listing, the fix is cheap. Pull whatever the state has on file for the address. Have the well and pump looked at while there is no clock running and no attorney copied on the email. If there is an old unused well somewhere on the property, have it decommissioned properly under a permit and keep the report. A sealed well with paperwork is a line item on a disclosure. An open hole in the back yard that nobody can document is a negotiation.

None of this is legal advice, and we are not attorneys. It is how the process actually goes on the jobs we do. If you want a straight read on what your particular job needs before you start making calls to the town, call 973-853-1550 and ask.

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Ackerman has been doing well drilling and new wells in Sussex, Passaic, Bergen and Morris Counties since 1952. Wells are all we do.

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More about well drilling and new wells

Published by Ackerman Pump Company, Hewitt NJ. General guidance about wells in this part of New Jersey, not a diagnosis of yours. Call 973-853-1550 and we will tell you what is actually happening at your house. Updated 2026-08-25.

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