Shared Wells in Montana and the Agreement That Makes or Breaks Your Loan

Two houses. One well. It has worked fine since the Reagan administration. The neighbors split the pump repair in 2011 and nobody has thought about it since.

Then somebody sells, and the buyer's lender asks for the shared well agreement, and there isn't one.

This is one of the most common rural Montana closing problems and one of the least understood, because it does not feel like a mortgage issue. It feels like a neighbor issue. To the lender it is a title issue, and title issues get cured before closing, not after.

Why lenders care at all

A lender is underwriting collateral it may one day have to sell. A house without a reliable, legally protected water supply is not readily marketable, and a water supply that depends on a neighbor's goodwill is not legally protected.

So the requirement is not really about the well. It is about whether the right to draw water, and the obligation to help pay for the equipment that draws it, survive a change of ownership. That is what a recorded agreement does and a handshake does not: it runs with the land.

[keyfact] A verbal or informal arrangement, no matter how long it has worked, generally does not satisfy the requirement. The document has to be written and recorded so it binds future owners of both parcels, including a neighbor who has not moved in yet. [/keyfact]

What a conforming agreement usually has to cover

Requirements differ by program and by investor, and they change. FHA is prescriptive about this in Handbook 4000.1; VA has its own standard; conventional investors vary, and some add overlays on top of the agency guide. Ask your lender for the specific standard early rather than assuming a document that satisfied one buyer's lender will satisfy yours.

That said, the agreements that pass generally address the same list:

• Who has the right to use the well, identified by legal description of each parcel rather than by owner name, so the right transfers with the property.
• Cost sharing for routine maintenance (pump, pressure tank, electricity, testing) with the split stated.
• Repair and replacement obligations, including what happens when a pump fails and one party wants a cheaper fix than the other.
• Access rights so each party can physically get to the wellhead and the lines to repair them, which usually means an easement across the other parcel.
• Remedies if a party stops paying, so the non-paying party's share can be recovered rather than argued about.
• Water rights, meaning the underlying right to appropriate the water, which in Montana is administered by the Department of Natural Resources and Conservation and is a separate legal object from the well and from the land.
• Binding effect on successors, and recording in the county clerk and recorder's records.

The water rights point deserves a sentence of its own. In Montana a well can be exempt from permitting under the groundwater exemption for small appropriations, but the exemption has volume and flow limits and the analysis is fact-specific. If two houses are drawing from one exempt well, ask a Montana water rights attorney whether the arrangement is within the exemption. Your lender will not ask that question. Your future self might wish somebody had.

Why this is title work, not appraisal work

The appraiser will note that the property is served by a shared well. That is the extent of the appraiser's involvement.

Everything else happens in the title file. The title company searches the records, finds no recorded agreement, and either raises an exception or requires one be recorded before it will issue the policy the lender needs. The lender's condition and the title company's requirement are the same requirement seen from two sides.

Which is why "we'll deal with it after closing" is not an option. The lender's protection is the recorded document, and it either exists at funding or the loan does not fund.

The timeline problem

Here is the part that costs people money.

Creating an agreement requires the other owner to sign it. That owner is not in your transaction, has no deadline, receives no benefit, and may be genuinely uninterested in signing a document that creates obligations where none existed on paper.

Between drafting by an attorney, review by both owners, negotiation over the cost split, signature, notarization and recording, this realistically takes weeks. Sometimes it takes longer because one owner is out of state for a month, or has passed away and the parcel is in probate, or simply says no.

Meanwhile your rate lock is running and your closing date is in the contract.

[keyfact] Ask about the water source the day you consider the property, not the day you get the title commitment. "Is the well shared, and is there a recorded agreement?" is a question the listing agent can usually answer in an afternoon. It is the single highest-value question on a rural Montana showing. [/keyfact]

Number of homes on the well

The count matters, though not in a way with one universal answer.

Two homes on a well is common and is the standard shared-well scenario every program contemplates. As the number rises, the analysis changes: capacity has to support all connections, and at some point a system serving enough connections stops being a shared private well and becomes a public water system subject to Department of Environmental Quality regulation, with testing and reporting obligations attached.

Where that line falls, and what it triggers, is a regulatory question rather than a lending one. If more than two or three homes are on the well, get the DEQ classification confirmed before you assume the private-well rules apply.

What to do, in order

Before you write the offer. Ask: is the well shared, how many homes, is there a recorded agreement, and can I see it. If there is a recorded agreement, get a copy and send it to your loan officer that day for review against the specific program's standard.

If there is no agreement. Raise it in the offer. This is a seller obligation to negotiate, not a buyer problem to absorb quietly. Ask for a longer closing window than you would otherwise take, and consider making the recorded agreement a condition of closing so you are not choosing between losing earnest money and closing without it.

If the neighbor won't sign. Sometimes they will sign a narrower document than the first draft: just use rights and access, with cost sharing handled more simply. Sometimes there is an alternative: on some parcels, drilling a separate well is genuinely cheaper and faster than negotiating, though that brings its own permitting and water-rights questions.

If you already own one. If you own a property on an undocumented shared well and expect to sell in the next few years, record an agreement now, while the neighbor relationship is calm and there is no deadline. It is a fraction of the trouble and it protects your eventual sale.

Where this fits in the rest of the file

A shared well is rarely the only rural item on a Montana file. It usually arrives alongside septic questions and access questions, and those three together are the standard rural title package.

• The full rural checklist: financing a Montana home on acreage
• The other two title problems: septic, legal access and easements
• If you are buying raw ground and will drill your own: land and lot financing
• Veterans should note VA has its own water-supply standard: VA home loans in Montana

If you are under contract on a property with a shared well and no recorded agreement, the useful move is to find out this week which specific standard your loan has to meet. Send us the property and we will tell you what the document needs to say.