A water well permit depends almost entirely on what you're doing and where you're doing it. Drilling a new domestic well, deepening an existing well, replacing a pump, abandoning a well, or converting to municipal water — each triggers different permitting pathways. Most states require a permit for new well construction, but exemptions exist for replacement-in-kind work in some jurisdictions. The IRC and your state's water-resources agency both have rules in play: the building code governs the structure and plumbing connections; the state (and sometimes county) water authority governs groundwater withdrawal and well construction standards. A homeowner in rural Pennsylvania may need only a local building permit; a homeowner in California or Texas may need both a county permit and a state water-rights filing. A 90-second call to your county health department or building division will tell you what applies to your address and scope — and will save you the cost of drilling a well and then being told to plug it.
Water well permit thresholds and scope
The first decision point is scope. New domestic well construction always requires a permit in most states — typically filed with the county health department, county building department, or state water-resources agency (or some combination). This includes the drilling, casing, pump installation, and the plumbing connection from the wellhead to the house. Replacement of a pump or pressure tank in an existing well, replacement of a well casing, or conversion from well to municipal water are usually exempt — but 'usually' is the catch. Some jurisdictions treat any work below grade as trigger-requiring; others treat only new construction as a trigger. The best practice is to ask before you hire the driller.
New well construction in most states must meet the National Ground Water Association standards, state-specific well-construction codes, and local health-department requirements. The IRC R422 (Water Supply and Distribution) sets baseline standards for water-service piping and backflow prevention, but it defers to local authority having jurisdiction for groundwater withdrawal. Your state's water code or groundwater statute — not the IRC — governs whether you can legally drill a well at all, how deep you can go, and whether you need a water-rights permit. Texas, for example, requires a permit from the groundwater conservation district; Florida requires a permit from the water management district; New York requires notification to the Department of Environmental Conservation; California requires an exemption or permit from the state water board. None of these are building-department permits — they're water-law permits. Both apply.
Depth and yield matter. A shallow replacement well in a high-water-table area (say, 15 feet in New England) has different permitting and inspection requirements than a deep well in an arid region (100+ feet in the Southwest). Some jurisdictions exempt wells under a certain depth if they're replacement-in-kind; others don't. Some require a hydrogeologic report or yield test; others don't. Submitting an application without knowing your jurisdiction's depth thresholds and yield-testing rules is a classic rejection reason. Call the county health department or groundwater district before you commit to a contractor.
The plumbing connection from the wellhead to the house and any treatment equipment (pressure tank, filtration, chlorination) typically falls under plumbing code (IPC Chapter 6 or equivalent) and requires a plumbing permit separate from the well-construction permit. Some jurisdictions bundle these into a single 'water-supply permit'; others issue them separately. If you're doing the plumbing work yourself, confirm whether a licensed plumber is required. If you're hiring a well contractor, confirm whether they pull the well permit and the plumbing permit, or whether you're responsible for one of them.
Abandonment of an existing well is a permit-triggering event in most states. You can't just cap it and walk away — there are environmental-liability and groundwater-contamination risks. The well must be 'decommissioned' or 'plugged' according to state standards, usually with bentonite clay, cement, or other approved sealants. This is typically handled by a licensed well contractor and requires a state or county abandonment permit. Costs run $300–$1500 depending on well depth and local rates.
The fastest way to know for certain is to call your county health department (for well construction) and your county building department (for plumbing permits). Have your address, estimated well depth, and intended use ready. Ask: Is a well permit required for my address? Is there a water-rights component? Who issues it? What's the application process? Do I need a licensed well contractor? Do I need a plumbing permit too? The answer will be jurisdiction-specific, and you'll avoid a $5000+ mistake.
How water well permits vary by state and region
The eastern US (Maine to Georgia) generally treats well permits as a health-department function. Wells are permitted and inspected under state health code (often based on the Ten States Standards for water-supply systems) with local health departments handling day-to-day review. New Hampshire, Vermont, and Maine have streamlined exemptions for replacement wells under 25 feet; New York requires State DEC notification but often issues exemptions for existing-use replacement wells; Pennsylvania requires a building permit for the well structure but defers groundwater rights to county conservation districts. Typical timeline: 1–3 weeks for a straightforward replacement, 3–8 weeks for new construction with site evaluation.
The Midwest (Ohio, Indiana, Michigan, Wisconsin, Minnesota) splits authority: building departments handle the physical well structure and plumbing code compliance; county or state health departments handle water-supply system adequacy and abandonment. Most states in this region have simplified exemptions for replacement-in-kind wells if you document the old well's location and depth. Well depth triggers vary — some states exempt wells under 25 feet if they're replacement-in-kind; others don't. Frost depth also matters: Wisconsin's 48-inch frost depth affects wellhead protection and pressure-tank location, for example. Typical timeline: 1–3 weeks for exemption confirmation, 2–6 weeks for new construction.
The South and Southwest (Texas, Oklahoma, Colorado, Arizona, California, New Mexico) adds a groundwater-rights and water-conservation layer. Texas requires a permit from the applicable groundwater conservation district (not the building department) — and some GCDs have tightened rules due to aquifer depletion. Colorado regulates groundwater as 'tributary' or 'non-tributary,' with tributaries requiring state engineer approval and non-tributary wells often having usage limits. California requires a state water-board exemption for domestic wells (typically 2 acre-feet per year or less for single-family homes, but this varies by region and basin). Arizona exempts domestic wells under certain yield thresholds but requires reporting to the Department of Water Resources. These are not building-permit exemptions — they're water-law exemptions, and you need them separately. Typical timeline: 2–4 weeks for exemptions, 6–12 weeks for formal permits due to state-level review.
Florida, Louisiana, and other coastal/high-water-table states regulate wells through water-management districts (Florida) or the state Department of Environmental Quality. Florida requires a consumptive-use permit for wells that withdraw more than 100,000 gallons per day; domestic wells are typically exempt if under 25 gallons per minute average use, but the exemption must be applied for. Saltwater intrusion and aquifer protection add complexity. New construction often requires wellhead protection and backflow-prevention certification. Typical timeline: 1–2 weeks for exemptions, 4–8 weeks for permits.
Common scenarios
New domestic water well, 50 feet deep, rural county in Ohio
A new well requires both a building permit (from the county building department for the wellhead structure and plumbing code compliance) and a health-department permit (from the county health department for the well construction and water-supply system). You'll also need the plumbing permit for the pressure tank and house connection. Cost: $150–$350 for the building permit, $100–$250 for the health permit, $50–$150 for the plumbing permit. Timeline: 3–6 weeks total from application to well inspection. You'll likely need a state-certified well contractor to drill the well; the contractor usually handles the drilling-permit paperwork, but you or the contractor will file the building and plumbing permits. Bring a site plan showing the well location, property lines, and distance to the septic system (typically 50+ feet), and distance to utilities. Inspection occurs before drilling (site inspection), during drilling (casing inspection), and after completion (pressure test and water-quality test).
Replace existing pump in 30-year-old well, same location, Texas
Pump replacement alone is usually exempt from the building permit in most states, but not in Texas, where it depends on whether your groundwater conservation district (GCD) requires a notice. Many Texas GCDs require a 'permit by rule' filing for any well work, including pump replacement, even if the underlying exemption exists. Some don't. You'll need to call your GCD (they're county-based) and ask: Does a pump replacement trigger a permit? Many will say no if the pump is like-for-like and the well is not deepened. If exempt, no permit cost. If permit-by-rule, typically $50–$100 filing fee and 1-week turnaround. Call the GCD first — they handle groundwater authority in Texas, not the building department.
Abandon old shallow well and drill new well 2 miles away, rural California
Both the abandonment and the new well trigger permits. You'll need: (1) a state water-board exemption or permit for the new well (domestic exemption if under 2 acre-feet per year and you file the notice correctly — this is free but required); (2) a county building permit for the wellhead and plumbing connection; (3) a county well-abandonment permit for decommissioning the old well; (4) a plumbing permit for the house connection. California's domestic-well exemption process requires filing a notice with the state water board; if you don't file it, you may be liable for water-rights violations even if your use is objectively small. Cost: $0–$100 for the state exemption (mostly filing fees), $150–$400 for the county building permit, $150–$300 for the abandonment permit, $50–$200 for the plumbing permit. Timeline: 4–12 weeks due to the state-level exemption review and county coordination. Work with a licensed well contractor; they should guide you through the abandonment and state-exemption process.
Replace pressure tank and upgrade plumbing in basement; existing well is unchanged
Pressure-tank replacement and plumbing upgrades are usually exempt if the well itself is not modified, deepened, or relocated. However, a plumbing permit is typically required for any new piping in the house — not because the well is involved, but because the plumbing code requires it. This is a plumbing-only permit, not a well permit. Cost: $50–$150. Timeline: 1–2 weeks. If you're hiring a licensed plumber, they'll pull the permit. If you're doing the work yourself, check whether your jurisdiction requires a licensed plumber for plumbing-permit work.
Convert from well to municipal water; well remains on property for future use
The conversion itself — running a new water line from the municipal main to the house — requires a plumbing permit and potentially a building permit (for any trenching or foundation penetration), but not a well permit. The old well does not need to be abandoned unless your jurisdiction requires it or the well is determined to be a contamination risk. Some states and counties require all non-use wells to be abandoned within a certain timeframe; others don't. Call your health department and ask: If we disconnect from the well and connect to municipal water but want to keep the well capped, is abandonment required? If the answer is no and you get it in writing, you can leave it. If yes, budget $300–$1500 for decommissioning. Cost for the conversion: $50–$200 for the plumbing and building permits. Timeline: 1–2 weeks.
Water well permit documents and who can file
| Document | What it is | Where to get it |
|---|---|---|
| Well construction permit application | County health department or water-resources agency form requesting well details: location (GPS or legal description), proposed depth, intended use (domestic only, livestock, irrigation, etc.), property-owner contact info, contractor info if applicable. Some jurisdictions require a hydrogeologic assessment or yield-test proposal. | County health department website, or in person at the health or building-department office. |
| Site plan or property survey | Hand-drawn or professional survey showing the proposed well location, property lines, distance to septic system (minimum 50 feet in most jurisdictions), distance to property line, and distance to surface water or utilities. A simple sketch is often acceptable for exemptions; a professional survey may be required for new construction in some states. | You can sketch one yourself for exemptions; hire a surveyor if required. Cost for a surveyor: $300–$800. |
| Well log (for new construction) | After drilling, the well contractor provides a detailed log showing the casing depth, total depth, water level, geologic strata encountered, and any test results. This is filed with the state or county water-resources agency and becomes part of the public groundwater record. | The well contractor provides this; it's part of their drilling report. |
| Water-quality test or certification | A lab analysis of water from the new well showing bacteria (E. coli), nitrate, pH, and other parameters required by state health code. Some states exempt replacement wells if the old well passed; others require testing for all new wells. Cost: $100–$300. | County health department can refer you to an approved lab; the lab submits results directly to the health department. |
| Plumbing permit application | County or municipal form detailing the plumbing work: wellhead, pressure tank, house connection, treatment equipment (if any), backflow prevention. This is separate from the well permit in most jurisdictions. | Building or plumbing department website or counter. |
| State water-rights exemption or permit (varies by state) | In western states (California, Colorado, Texas, Arizona, New Mexico), a separate filing documenting that your well is exempt from water-rights permitting (e.g., domestic-use exemption) or that you've obtained a permit to withdraw. This is not a building permit — it's a water-law document. California, Colorado, and Texas each have different forms and processes. | State water board, state engineer, or groundwater conservation district website. Filing is often online; some states require paper submission. |
| Well abandonment permit and decommissioning plan | If decommissioning an old well, a form and plan showing the method (bentonite seal, cement plug, etc.), casing removal vs. filling, and contractor credentials. Required in most states. | County health or environmental-quality department. The well contractor typically prepares this. |
Who can pull: In most states, the property owner can file the building and plumbing permit applications themselves, but a licensed well contractor must perform the drilling and submit the well log. For water-rights exemptions or permits, the property owner typically files or authorizes the contractor to file on their behalf. Some states allow contractors to file; others don't. On the plumbing side, a licensed plumber is usually required to pull the plumbing permit if doing the work; if you're doing the work, check your local rules — some jurisdictions allow homeowner permits for residential plumbing, others don't. The safest path is to hire a licensed well contractor (for drilling and well-construction permit) and a licensed plumber (for plumbing-system permits and work). Cost for contractor labor: typically $2000–$8000 for a new 40–80 foot well depending on region and geology, plus permitting.
Common water well permit rejections and fixes
- Application filed with wrong agency. Homeowner filed only a building permit and missed the health-department well permit or state water-rights exemption.
Before filing anything, call your county health department and ask: What agencies must issue permits for a new well at my address? List them all. Then file with each one. Most require parallel submissions, not sequential. If you've already filed with the wrong agency, call them and ask if they can refer you to the correct agency or if they'll coordinate. - Site plan missing critical details. No property lines, no septic system location, no distance measurements to wells, property lines, or utilities.
Redraw the site plan (or hire a surveyor if required) showing: property lines and dimensions, proposed well location with GPS coordinates or distances to known structures, location of septic system with distance to well (50+ feet minimum), location of utilities, location of surface water, and any easements or protected areas. Most health departments want accuracy to within 10 feet for exemptions; surveyors can provide it. - Scope misclassified. Homeowner applied for a plumbing permit only when a well-construction permit was also required, or vice versa.
Call the building and health departments separately and ask: For this project (new well / pump replacement / abandonment / plumbing upgrade), what permit(s) do I need? Don't assume one agency covers it all. They'll tell you what they need. - Missing water-quality test or hydro report. Application states a new well but includes no water-quality results or yield estimate.
Some jurisdictions allow exemptions without testing if you're replacing an existing well; others require testing for all new construction. Call ahead and ask if testing is required before or after drilling. If before, submit a hydrogeologic assessment or yield-test plan with the application. If after, note that testing will happen post-drilling and submit results with the final-inspection request. - Contractor not licensed. Homeowner attempted to drill a well themselves or hired an unlicensed well contractor.
Stop. Most states require wells to be drilled by a licensed well contractor and logged by a licensed well driller or hydrogeologist. Unlicensed work voids the permit and creates liability. Hire a licensed contractor. Verify their license before hiring: call your state water-resources agency or state board of professional regulation and ask how to verify a well-driller license. - Water-rights exemption not filed. Homeowner in California or Texas obtained a building permit but did not file a state water-rights exemption or notification.
In California, file a Notice of Exemption with the State Water Board (free online filing) before or concurrent with the building permit. In Texas, file a 'Permit by Rule' or 'Notice of Exemption' with your groundwater conservation district if required by that GCD's rules. In Colorado, file an exemption or permit application with the state engineer. Do this in parallel with the building permit, not after.
Water well permit costs and fees
Well-permit fees vary widely by state and scope. Building and health-department permits typically run $100–$400 combined; state water-rights exemptions or permits add $0–$300 depending on state and whether you need professional help with the filing. Plumbing permits for the house connection run $50–$200. Well-abandonment permits run $100–$300. If you need professional help (surveyor, hydrogeologist, or consultant to prepare exemption documents), add $300–$1500. Contractor labor is separate and typically runs $2000–$8000 for drilling, testing, and installation. The permit fees themselves are small relative to the total cost, but getting them right avoids the catastrophic cost of drilling a well without a permit and being ordered to plug it or decommission it.
| Line item | Amount | Notes |
|---|---|---|
| County building permit (wellhead, plumbing) | $100–$300 | Flat fee or based on project valuation, typically $1–2% of well cost |
| County health-department permit (well construction, water quality) | $100–$250 | Varies by state; some include inspection fees, others charge separately |
| Plumbing permit (house connection, pressure tank) | $50–$150 | May be bundled into building permit or separate |
| State water-rights exemption or permit (CA, CO, TX, AZ, etc.) | $0–$300 | California domestic exemption is free filing; Colorado and Texas permits vary; some states charge $100+ for formal permits |
| Well abandonment permit | $100–$300 | Separate from new-well permit if decommissioning an old well |
| Water quality test (required or recommended) | $100–$300 | Approved lab, results submitted to health department |
| Site survey or hydrogeologic assessment (if required) | $300–$1500 | Professional survey, geologist report, or hydro assessment — not always required but common for new construction |
| Well-contractor labor (drilling, casing, testing, pump installation) | $2000–$8000+ | Depends on depth, geology, location, pump size; not a permit fee but part of total project cost |
Common questions
Do I need a permit to replace a pump in my existing well?
Usually no for the pump itself, but check your jurisdiction. In most states, replacing a pump or pressure tank is exempt from the building permit. However, some jurisdictions (notably Texas groundwater conservation districts) require a 'permit by rule' notice even for pump replacement. Call your county health department or groundwater district and ask: Does a pump-only replacement trigger a permit? If they say no and confirm it in writing, you're exempt. If yes, it's typically a $50–$100 filing fee and 1-week turnaround. If you're also upgrading the plumbing (new piping, pressure tank, filtration), a plumbing permit is almost always required.
What's the difference between a well permit, a water-rights permit, and a plumbing permit?
A well permit (from the building or health department) covers the physical well structure: drilling, casing, depth, construction standards, water quality. A water-rights permit (from the state water board, engineer, or groundwater conservation district) covers whether you're legally allowed to pump from that groundwater source and how much. A plumbing permit covers the pipes, pressure tank, and connections inside the house. All three are separate, though some jurisdictions bundle the well and water-rights permits. You may need one, two, or all three depending on your state and project. Call your health department first; they'll tell you what else you need.
I'm in California. Do I need a state water-board exemption for my domestic well?
Likely yes. California exempts domestic wells from water-rights permitting if they serve a single-family household and pump no more than 2 acre-feet per year (roughly 650,000 gallons per year, or about 1800 gallons per day). But you must file a Notice of Exemption with the State Water Board; the exemption doesn't apply automatically. Filing is online and free, but it's a required step. Some counties also require a local exemption or notice. Filing delays or omissions can be costly later. File the state exemption and ask your county health or building department if a local filing is also required.
What's the timeline from application to drilling?
Typically 1–3 weeks for a straightforward exemption (same-location replacement well), 3–8 weeks for new construction or out-of-state wells. Bottlenecks: plan review (1–3 weeks), water-quality or hydro reports (if required, add 1–2 weeks), and agency coordination if multiple permits are required. Start the permit process before you hire the contractor so you know what documents are needed. If you file after hiring, you're paying the contractor to wait, which adds cost and risk. Seasonal factors also matter: frost-heave season (fall/winter in northern states) can delay site inspections and well-drilling crews fill up in spring and summer.
Can I drill a well on my property without a permit?
Technically, yes — no one stops you from digging. Practically, no. If you drill without a permit, you're violating building code, health code, and (in many states) water law. Consequences: the building or health department orders you to plug the well (cost $500–$2000); you can't legally use the water if you're in a water-rights jurisdiction and lack a permit; you create liability if the well contaminates groundwater; you can't pass a title search or get a mortgage appraisal if the well is unpermitted. The permit fee is $100–$400; the cost of fixing an unpermitted well is $2000–$10,000. Get the permit first.
I'm converting from a well to municipal water. Do I have to abandon the old well?
Not automatically, but check your jurisdiction. Some states and counties require all non-use wells to be abandoned (decommissioned with bentonite or cement plugs) within a certain timeframe or before property transfer. Others don't. Call your county health department and ask: If I disconnect from the well and connect to municipal water, must the old well be abandoned? If they say no and give you the answer in writing, you can cap it and leave it. If yes, budget $300–$1500 for professional decommissioning and get an abandonment permit. Some jurisdictions offer exemptions if you plan to keep the well for emergency use; ask.
What if my well depth is deeper than the local threshold?
Well depth is one of the main triggers for permit scope. Some jurisdictions exempt replacement wells under 25 feet; others don't exempt based on depth. If your existing well is 50 feet and you want to drill a replacement at the same location to the same depth, you're usually fine. If you want to deepen it or drill significantly deeper, a new permit (not just an exemption) is required in most states. If your water table is very deep (100+ feet in parts of Texas, Arizona, Colorado), you'll need a full new-construction permit anyway. Before drilling, confirm the allowable depth with your health department or groundwater district.
Do I need a licensed plumber to install the pressure tank and house connection?
In most jurisdictions, yes. Plumbing work — piping, pressure tanks, backflow prevention, treatment equipment — requires a licensed plumber to pull the plumbing permit and do the work. Some jurisdictions allow homeowners to do their own plumbing if they pull a homeowner permit, but this varies widely. Call your building or plumbing department and ask: Can a homeowner pull a plumbing permit for a well-pressure-tank and house-connection installation, or must a licensed plumber do it? If a licensed plumber is required, the permit cost is bundled into their labor quote ($500–$2000 for typical well-house plumbing).
What's a water-rights exemption and why do I need it in some states but not others?
A water-rights exemption is a legal filing confirming that your groundwater use is small enough to be exempt from the state's water-permitting system. Western states (California, Colorado, Texas, Arizona, New Mexico) regulate groundwater as a shared public resource; you can't legally pump without permission, even from your own land. Most offer exemptions for domestic use (single-family household) under a certain threshold (typically 2–15 acre-feet per year depending on state). You must file the exemption or request a permit; using the water without one exposes you to liability and enforcement action. Eastern states generally don't regulate groundwater as strictly, so exemptions may not exist or may not be required. In those states, the building or health permit may be sufficient. The state-by-state variation is why calling your water agency first is essential.
What inspections happen during a well project?
Typically three: (1) Site inspection before drilling to confirm well location, setbacks, and property lines. (2) Construction inspection during drilling to verify casing type, depth, and water level. (3) Completion inspection after drilling to verify water quality, pressure, and plumbing connection. Some jurisdictions compress these into two inspections; others may require more if treatment equipment is involved. The health department or building department schedules inspections after you notify them that work is ready. Plan 1–2 days per inspection for the inspector to show up. If an inspection fails (e.g., water quality issue, improper casing), work stops until the problem is fixed. Using a licensed contractor familiar with local inspection requirements reduces delays.
Ready to move forward with your water well project?
Before hiring a contractor or purchasing materials, spend 15 minutes on the phone with your county health department and county building department. Have your address and estimated well depth ready. Ask three questions: (1) What permits do I need for this project? (2) Who issues each permit? (3) What documents do I need to submit? Write the answers down, ask for the permit applications and contact info, and call back with follow-up questions if needed. This 15-minute call will clarify exactly what's required and save you the cost of drilling without a permit or filing the wrong paperwork. Most health departments answer straightforward questions by phone during business hours. If you're in a state with groundwater regulation (California, Colorado, Texas, Arizona, New Mexico), also call your state water board, state engineer, or groundwater conservation district with the same questions. Then hire your contractor and move forward with confidence.
Related permit guides
Other guides in the Plumbing category: