# How to Price Water Well Drilling Jobs When You Cannot See the Water
Well drilling is the rare trade where you quote a job without knowing how deep it goes. You do not truly know the depth, the formation, or the yield until the rig is turning. That uncertainty is exactly why pricing a well as a single flat number is dangerous: hit water at 120 feet and you made money; chase it to 380 feet through rock and a flat quote just bankrupted the job.
The drillers who stay profitable price per-foot with the right adders, set expectations about depth uncertainty in writing, and track every rig hour and material against the bore log. This guide covers how to build that number and where margin leaks out.
Price per foot, then layer the adders
The backbone of a well quote is a per-foot drilling rate, and it varies widely by region, rig type, and geology, commonly $15 to $60+ per foot all-in for residential work. But the per-foot number alone does not make a complete price. Layer these:
1. Mobilization. Getting the rig, support truck, and crew to a rural site is a real cost, often a flat $300 to $1,000+ depending on distance and access. Charge it separately so a close job does not subsidize a far one. 2. Casing. Steel or PVC casing to protect the bore and seal off surface contamination, priced per foot of cased depth. Formation determines how much casing you need. 3. Formation adders. Drilling through unconsolidated sand and gravel is different work than drilling granite. A hard-rock adder or a differentiated per-foot rate for rock vs. overburden protects you when the formation fights back. 4. Well development and testing. Airlifting or pumping the well clean and running a yield test to establish gallons per minute (GPM). A well that does not produce is not a finished job. 5. Pump and pressure system. Submersible pump sized to depth and demand, pitless adapter, wiring, pressure tank, and controls. This is frequently a separate line or a separate contract, but the customer sees it as part of "getting water." 6. Grouting and surface seal. Required to protect the aquifer from surface contamination, often mandated by permit. 7. Permit and abandonment fees. State and local well-drilling permits, and sometimes bonding.
On a typical residential well of 200 to 400 feet, the finished, water-in-the-house number commonly lands in the $9,000 to $20,000+ range once casing, pump, and pressure system are included. Drilling-only can be a fraction of that, so be precise with the customer about what your quote covers.
Handle depth uncertainty in the contract, not on the phone
The single biggest source of disputes in well drilling is the customer who heard "about $12,000" and got a bill for $18,000 because water was 150 feet deeper than the neighbor's well. You cannot control geology, but you can control the contract.
Good practice:
- Quote a per-foot rate plus a not-to-exceed conversation. Give an estimated depth range based on nearby well logs and state records, and state clearly that the final price follows actual footage.
- Define a dry-hole and abandonment clause. What does the customer owe if you drill to a reasonable depth and do not find adequate water? Silence here is how you eat a $10,000 loss.
- Reference nearby well logs. Many states publish completion reports; use them to set a realistic depth expectation instead of a hopeful one.
The Water Well Drilling & Testing Toolkit is built to keep this straight: a well bore log capturing depth, casing, production rate in GPM, and water-table elevation; a water-quality test tracker for bacteria, iron, pH, and hardness with lab reports; a drilling job cost sheet that totals rig hours, materials, and labor against the invoice; and a state and EPA permit tracker with a deadline calendar. When the final footage lands, your invoice traces straight back to the bore log, so a depth surprise is documented, not disputed.
Do not skip water quality and the paperwork
Hitting water is only half the job. The water has to be safe and legal, and both are billable, documented steps.
- Water quality testing. Bacteriological (coliform), plus iron, pH, hardness, and often nitrate and arsenic depending on the region. The federal Safe Drinking Water Act and state groundwater rules set the frame. A lab report the customer can hand a lender or health department is part of the deliverable.
- Permits and licensing. Most states require a licensed well driller, a drilling permit before you spud, a submitted well completion report, and grouting/sealing to protect the aquifer. Missing a permit deadline can mean fines or a stop-work order that idles your rig, the most expensive thing that can happen to a drilling business.
Track these against a calendar. A rig sitting idle because a permit lapsed costs more per day than almost any material line on the job.
Common well-pricing mistakes
Quoting a flat total instead of per-foot. You are guaranteeing a price on a depth you cannot see. Per-foot with a documented estimate protects both sides.
Burying mobilization in the per-foot rate. Then a nearby job overcharges and a distant job loses money. Break it out.
Forgetting the pump and pressure system in the customer's mind. They think "well" means "water at the tap." If your quote is drilling-only, say so loudly, or the final bill for the pump feels like a bait-and-switch.
No dry-hole clause. Geology occasionally wins. Without a written clause you drilled for free and possibly at a loss.
Not tracking rig hours against the bore log. Your most expensive asset is the rig. If you cannot tie hours and footage to each job, you do not actually know which jobs make money.
Ignoring water-quality retests and permit deadlines. A failed coliform test or a lapsed permit stalls the handoff and delays your final payment.
A realistic estimate walk-through
Rural residential well, nearby logs suggest water around 280 feet, moderate overburden then rock:
- Mobilization: $600
- Drilling 280 ft at $28/ft blended (with rock adder): $7,840
- Casing 60 ft at $22/ft: $1,320
- Well development and 4-hour yield test: $700
- Grouting and surface seal: $450
- Submersible pump, pitless, pressure tank, wiring: $3,800
- Water-quality lab panel: $250
- Permit fees and completion report: $300
That totals roughly $15,260 to water at the tap. Present it as a per-foot rate plus adders with a stated depth estimate, not a flat number, and the customer understands why 320 feet costs more than 240 and 200 costs less. Your bore log and cost sheet then justify the final invoice line by line.
Run every well through the same system
Well drilling punishes sloppy record-keeping harder than most trades because the biggest variable, depth, is invisible until you drill. The operators who make money price per-foot, put depth uncertainty and dry-hole terms in writing, and reconcile rig hours, materials, and yield against a bore log on every job. The free ServiceOpsKits guide walks through building that estimate-to-invoice chain so every quote is consistent and every final bill is defensible. Price the footage you can measure, document the yield you delivered, and let the bore log settle any argument before it starts.