Section 7.15 of the Tollgate Property Owners Association covenants is one sentence, but it rewrites what a lot of buyers think they know about rural Sisters real estate: "Individual wells are not allowed; all Lots shall connect to the Tollgate domestic water system." Half-acre lot under the ponderosas, national forest at the back fence, and you still can't hire a driller and put in your own well. You connect to a private water company instead, one the subdivision has run since Brooks Resources broke ground here in 1972.
That single clause is the whole argument of this post. Every Sisters-area listing eventually answers the question "where does the water come from," but the answer isn't binary. It isn't city water or a well. It's one of three separate systems, each with its own risk, its own testing rules, and its own bill, and the listing sheet almost never tells you which one you're looking at.
"Water" on a Sisters listing means one of three things
Buyers comparing acreage tend to sort water into two buckets: public utility or private well. In Sisters Country, there's a third category hiding in plain sight, and it's the one that trips people up most.
- City of Sisters municipal water. You're inside city limits, on the same system the town itself operates.
- A private community water company. You're inside a subdivision like Tollgate, where the HOA or an affiliated water company owns the wells and the infrastructure, and individual wells are often prohibited by the same covenants that govern paint colors and RV parking.
- An individual private well. You're on rural acreage outside both of the above, and the well is yours to drill, maintain, and eventually replace.
Those three categories don't map cleanly onto "in town" versus "out of town." A parcel that reads as classic Sisters acreage on a map can sit inside a private system with rules a county well log will never show you. A property a few miles closer to downtown can still be on an individual well. You find out which one you're buying by asking, not by assuming.
Why "closer to town" doesn't mean "safer water"
The instinct is to treat proximity to Sisters as a proxy for water security. The reporting doesn't support that shortcut.
City Manager Jordan Wheeler and capital projects manager Paul Bertagna told The Nugget Newspaper in July 2026 that Sisters draws from four municipal wells, and that one of them, Well No. 4 at Creekside Campground, produces 1,500 gallons per minute. Those wells tap groundwater that threads through fractured lava flows to depths exceeding 2,000 feet, the kind of source that explains why a single well can push that much volume.
Rural residential wells are a different animal. Deschutes County Commissioner Phil Chang told The Nugget in March 2026 that rural property owners typically depend on groundwater wells shallower than the city's municipal wells, and state water officials have said separately that most of the domestic wells reported going dry statewide are less than 100 feet deep, the exact depth range most exposed to a declining water table. A parcel's address doesn't change which of those two categories its well falls into. Only the well log does.
The decline is real, and it isn't even across the basin
The aquifer under Central Oregon isn't shrinking on a flat schedule. Chang's March 2026 briefing to the Deschutes County Board of Commissioners, relayed by OWRD groundwater hydrologist Joe Kemper, put the basin's average annual decline at about 1 foot a year through the mid-1990s, accelerating to roughly 2.5 feet a year since 2000. A separate USGS study found that groundwater levels in the stretch from Sisters to Powell Butte dropped as much as 14 feet between 1997 and 2008. Wells nearer the center of the basin, around Bend and Redmond, have dropped 35 to 40 feet since 1993.
Chang's testimony also noted a geographic pattern worth remembering if you're comparing Sisters parcels against anything further east: the closer a well sits to the Cascades, the milder the decline tends to be, while declines grow more pronounced further from the mountains. That's a partial reassurance for Sisters, not a blanket one. It's still basin-wide drought, still uneven, and still something a static water level test can confirm for one specific well far better than a general trend can confirm for a whole zip code.
What actually happens at closing
| City of Sisters system | Private community system (Tollgate model) | Individual private well | |
|---|---|---|---|
| Water source | Four municipal wells, one producing 1,500 GPM from depths exceeding 2,000 feet | Wells owned and operated by the subdivision, not the buyer, not the city | A single well on the tax lot, typically shallower |
| Can you drill your own well | No | Often prohibited outright by CC&Rs | Yes, usually the only option |
| What gets tested before you close | City-run testing under state drinking water rules | The water company's own program, not a state-mandated seller test | Oregon law requires the seller to test for coliform bacteria, arsenic, and nitrates |
| What you pay | A standard city utility bill | A separate water company fee, billed apart from HOA dues | No recurring bill, but you own every future repair |
That third row is worth sitting with if you're buying acreage. Oregon requires sellers of a property served by a private well to test for total coliform bacteria, arsenic, and nitrates through an accredited lab, then report the results to both the buyer and the Oregon Health Authority within 90 days of receiving them, according to the Oregon Property Seller Advisory published for real estate licensees. That test doesn't happen automatically on a home inside a private community system like Tollgate's, because you're not the one who owns the well.
Septic works on a parallel track. Deschutes County's Onsite Wastewater program administers septic permitting under the state's DEQ rules, and a septic inspection is expected at the time of sale regardless of which water category the property falls into. Ask for the site evaluation and permit history the same way you'd ask for a well log.
If your target is inside a subdivision like Tollgate, budget for the water company fee as its own line item. Tollgate's HOA dues run around $844 a year, and that figure covers the pool, courts, and road maintenance. The water company bill is separate.
The one thing that's actually about to change
Sisters is in the middle of expanding its Urban Growth Boundary, and it's the closest thing to a near-term shift in this picture. Deschutes County received the city's UGB amendment application on February 20, 2026, and the Sisters Planning Commission held a public hearing on the expansion May 21, 2026, recommending City Council approval. Central Oregon Daily reported the plan calls for annexing more than 300 acres on the city's northeast side, stretching from Highway 126 north to the Sisters Eagle Airport.
Annexation doesn't happen automatically once land sits inside the new boundary. A property owner still has to petition the city, and the area planning phase that will map out where water and sewer infrastructure actually goes is expected to take six months or more once it begins. If you're eyeing a rural parcel because it might eventually land on city water, treat that as a multi-year possibility, not a feature of the property today.
What to ask before you write an offer
- Which of the three categories does this parcel actually fall into, city, private community system, or individual well
- If it's an individual well, what is the depth and the most recent static water level, and how does that compare to the OWRD's typical vulnerability threshold
- If it's a private community system, what does the HOA or water company bill separately from dues, and is that documented anywhere you can review before closing
- Has the seller completed the state-required well test for coliform, arsenic, and nitrates, and can you see the lab results
- What does the county's onsite/septic record show for this address, and when was the system last inspected
- Does the parcel sit inside the proposed UGB expansion area, and if so, what does that actually promise versus what it doesn't
None of this is exotic due diligence. It's the same kind of practical, on-the-ground evaluation that comes from having actually built things, not just sold them, and it's the difference between buying a property and buying a set of assumptions about it.
If you're weighing acreage in Sisters, or trying to figure out what your own well-and-septic property is worth in today's market, Ninebark Real Estate can walk the specifics with you. Get a Free Home Valuation and let's talk about what's actually under the listing before you write an offer.
FAQ
Does being inside Sisters city limits guarantee I'm on city water? Usually, but not always. Some in-town-adjacent parcels and older subdivisions still operate on private systems. Confirm it in writing rather than assuming it from the address.
If my well is shallow, does that mean it's going to run dry? Not automatically. It means the well falls into the depth range state officials have flagged as most exposed to the basin's documented decline. A current static water level reading tells you far more than the depth alone.
Will the Urban Growth Boundary expansion bring city water to my rural parcel? Only if the parcel is inside the new boundary, the owner petitions for annexation, and the city completes area planning for infrastructure, a process expected to take at least six months once it starts. Don't buy on the assumption it happens on any particular timeline.
What's the difference between an HOA and a water company fee? HOA dues typically cover shared amenities, roads, and common areas. In subdivisions like Tollgate, the water company is billed separately because it's a distinct utility, not a shared amenity.
