Somewhere in the stack of paperwork at a Harrison closing sits a single line asking when the seller last tested the well. Most buyers glance at a date, see it filled in, and move on to the next page. It reads like confirmation that the water has been checked and cleared. It isn't.
Maine's seller disclosure law, found in Title 33, section 173 of the state statutes, requires a seller to state the date of the most recent water test. It does not require the test to have happened at all, and it says nothing about what the results were. A seller can write "never tested" in that blank and be in full compliance. The law is a disclosure requirement about a date, not a safety requirement about the water itself. For a buyer closing on a home along Long Lake or off one of Harrison's back roads, that distinction is the whole ballgame, because the alternative to that piece of paper is not a state inspector. It's a private lab, a mail-in sample, and whatever the buyer decided to pay for on their own.
What That Line Actually Requires, and What It Doesn't
Maine Well Water says Maine does not mandate well water testing at the point of sale. The disclosure statute exists to create a paper trail, not a safety floor. If a house has been in the same family for twenty years and nobody has run a test since the well was drilled, "never tested" satisfies the law just as completely as a clean report from last month would.
That gap matters more in a market built on private wells than it does almost anywhere else in New England. More than half of Maine households get their drinking water from a private well, and unlike public systems, those wells fall outside federal drinking water regulation entirely. The responsibility for knowing what's in the water sits with whoever owns the well, which in a real estate transaction means it briefly sits with nobody, right up until the buyer decides to test it themselves.
Why the Gap Matters on This Side of the Lake
Cumberland County, where Harrison sits, isn't a neutral place to skip that step. In a county-level tally of state lab results last updated in May 2023, about 17.3 percent of tested wells in Cumberland County came back above the arsenic guideline of 10 micrograms per liter, and close to 20 percent exceeded the guideline for uranium. Those numbers reflect wells whose owners chose to test, which likely biases the figures upward in areas already suspected of contamination, but they're consistent with a longer pattern. Public health outreach in the 2010s specifically named Cumberland alongside Kennebec and Hancock counties as having some of the state's highest arsenic detection rates, after a review of testing between 1999 and 2013 found that 58 percent of homeowners across seven communities in those three counties who submitted samples got results above the guideline.
The reason has nothing to do with pollution and everything to do with what's underneath the ground. Arsenic in Maine well water is almost always naturally occurring, released as groundwater moves through fractured bedrock. It has no taste, smell, or color, so a house can have a serious arsenic problem and a homeowner would have no way of knowing without a lab result. And because the arsenic travels through fractures in the rock rather than sitting in a uniform layer, two wells fifty feet apart can produce completely different numbers. A clean test at the house next door tells you nothing about the well you're actually buying.
A full test panel for a private well purchase in this area typically covers:
- Bacteria (total coliform and E. coli), which the state recommends testing annually
- Nitrate and nitrite, also an annual recommendation
- Arsenic, uranium, fluoride, and manganese, tested every three to five years
- Lead, particularly in older homes with older plumbing
The Maine CDC offers free arsenic testing for any private well owner in the state, with no income requirement and no geographic restriction, through its Drinking Water Program. It's a resource worth using even outside a transaction, but especially inside one, since a buyer paying for a lab panel anyway may as well confirm the arsenic result through the free state kit as a cross check.
The Other Well Law, and Who It Actually Protects
Maine does have a testing mandate tied to wells, just not for the transaction most buyers are thinking about. Since 2022, landlords have been required under Title 22, section 2660-Y to test every private well serving a rental unit for arsenic, at least once every five years, and to share the results with tenants within ten days. A renter in a house on a private well in Harrison has a stronger legal guarantee of knowing their arsenic level than a buyer closing on that same house would, if the seller simply checked "never tested" on the disclosure form.
That asymmetry is worth sitting with. It isn't a flaw in either law so much as evidence that the two were written to solve different problems. The landlord statute assumes an ongoing, unequal relationship where a tenant has no ability to order their own test. The seller disclosure statute assumes a buyer who can commission an inspection and negotiate before closing. In practice, that means the protection a buyer gets is only as strong as the test they choose to pay for.
| Requirement | Who it covers | What it actually confirms |
|---|---|---|
| Seller disclosure (33 M.R.S. §173) | Home buyers | The date of the last test, not the result |
| Landlord arsenic law (22 M.R.S. §2660-Y) | Renters | Actual arsenic level, every five years |
| FHA loan condition | FHA-financed buyers | Chanalytical says FHA-required testing covers coliform, nitrate, nitrite, and lead. |
| VA/USDA loan condition | VA/USDA-financed buyers | Whatever the local health authority requires |
What a Loan Already Requires, Regardless of State Law
Financing adds its own layer on top of state disclosure law, and it's often stricter. FHA loans require a well to test clean for coliform bacteria, nitrate, nitrite, and lead before the loan can close, regardless of what Maine's disclosure statute demands. VA and USDA loans generally defer to local health authority standards rather than setting a fixed federal panel.
The Bill Still Sitting in Augusta
There's a legislative wrinkle worth knowing about, even though it hasn't become settled law yet. LD 493, sponsored by Rep. Laurie Osher of Orono, would expand the landlord arsenic testing law to cover PFAS as well, requiring landlords to test rental wells for the so-called forever chemicals every five years and disclose the results to tenants. The bill passed the House 78-69 and cleared the Senate in the spring of 2025, but it still needed enactment votes and was expected to land on the legislature's special appropriations table given its projected annual cost of $110,000 to $125,000. As of this year, Robert King Law Firm reports that it has not been signed into law and its final outcome remains unresolved. It's a landlord-focused bill rather than a general home sale disclosure requirement, so even if it passes, it would not by itself change what a seller is required to disclose to a buyer. But it's a sign of where the legislature's attention is headed on well water transparency, and worth checking on before assuming today's rules are next year's rules.
What This Means If You're Closing on a Well in Harrison
None of this makes buying or selling a well-served property in this part of the Lakes Region harder than it should be. It just means the paperwork does less work than it looks like it does, and the actual protection comes from steps a buyer or seller chooses to take rather than steps the law requires.
For sellers, testing before listing, even informally through the state's free arsenic kit, turns "never tested" into an actual number and removes a point of friction before it reaches the closing table. For buyers, a full panel beyond whatever the loan program requires, arsenic and uranium in particular, is the only way to know what's actually coming out of the tap. If a result comes back elevated, treatment systems are well established and MaineHousing has in the past offered financial assistance for arsenic remediation to eligible homeowners, a program worth asking about directly given how these programs can change year to year.
A Few Questions Worth Asking Directly
Does a clean disclosure form mean the well water is safe? No. It means the seller reported a test date, or reported that none exists. It says nothing about water quality.
What does an FHA well test cover? FHA's standard well conditions cover bacteria, nitrate, nitrite, and lead.
Can I rely on a neighbor's well test results? No. Arsenic moves through fractures in bedrock, not evenly through soil, so wells close together can have very different levels. Only a test of the specific well tells you anything reliable.
Well water is one of the places where real estate and insurance planning genuinely overlap, since what's in the water can shape both a home inspection and a future coverage conversation. If you're weighing a purchase or sale on a private well anywhere in the Harrison area, the team at Oberg Insurance & Real Estate Agency can walk through what a test panel should actually include before you're standing at the closing table wondering what that date on the form really means.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
