You find two houses you like. One is a short walk from downtown Bangor on city sewer, and the other is a few miles out in Hampden on a septic tank and drain field. They are priced about the same, and you’re trying to work out which one costs you less over ten years.
The honest answer on septic vs sewer is that neither one wins every time. They cost you in different ways: one is a steady bill, the other is a small recurring job plus a risk of a big repair. This guide lays out both sides so you can compare real ownership costs, not just a listing price.
If you already own a septic system and have a question about it today, you can book a pump-out or inspection or call (207) 300-9238.
Where septic and sewer actually apply around Bangor
Downtown Bangor is on city sewer. Go about ten minutes out and that changes. Outer Essex Street, outer Ohio Street, Pushaw Road, the Kenduskeag corridor, Glenburn, Hermon and Levant are mostly septic country.
The same goes for most of the lake and camp country across Penobscot County. Brewer, Hampden, Old Town and Orono each have a sewered core and septic outside it. Holden, Eddington and Orrington lean heavily septic.
So the choice usually isn’t made by you at all. The street decides. If there’s no sewer main in front of the house, you have a septic system, a cesspool, or a holding tank. Your town’s public works office or sewer district can tell you for certain whether a main runs past a given address.
What septic and sewer each are
With city sewer, everything that goes down your drains runs through a pipe to a main under the street. From there it goes to a treatment plant run by the town or a sewer district. Your part ends at the pipe.
With septic, the treatment happens on your lot. Wastewater flows into a buried tank, where solids settle out and scum floats. The liquid in the middle then drains to a field of soil that does the final cleaning. If you want the full picture, we explain it in how septic systems work in Maine, and you can read the basics on the EPA’s page on how a septic system works.
The difference that matters for your wallet is simple. With sewer you rent treatment from the town. With septic you own it.
Septic vs sewer cost: the ongoing bills
Sewer is billed by the town or district, usually tied to how much water you use. The rate is set locally and changes, so we won’t quote one. Ask the seller for the last twelve months of sewer and water bills, and ask the town whether rates are scheduled to rise.
Septic has no monthly bill. It has a recurring job. A routine pump-out for a 1,000 to 1,500 gallon tank with an accessible cover runs $350 to $550, and most households need one every 3 to 5 years. Divide that price by your pumping interval and you get a yearly figure you can set beside twelve months of sewer bills.
A septic inspection runs $200 to $500, and it’s smart before a purchase and occasionally after. Our septic tank pumping and septic inspection pages explain what each visit includes, and the pumping cost breakdown covers what moves the price.
Here’s how the two compare on the things owners actually argue about.
| Item | City sewer | Septic |
|---|---|---|
| Regular cost | Sewer bill from the town or district | Pump-out every 3 to 5 years ($350 to $550), inspection as needed ($200 to $500) |
| Who builds and owns it | Town owns the main; you own the lateral to it, in most towns | You own the whole system |
| Who fixes a problem | Town for the main; you for the lateral | You, through your own contractors |
| Big one-time cost | Connection fee and trenching if you are connecting, set by the town | Replacement $12,000 to $40,000 or more |
| Lifespan | Main is the town’s long-term job; lateral can last decades | Drain field roughly 20 to 30 years with care |
| Your control | Little. Rates and rules are the town’s | A lot. Habits and pumping schedule change the outcome |
| Winter | The town handles the main; a shallow lateral can still freeze | Frost and compaction over the tank and field matter |
Who pays for what when something breaks
On a sewered street, a clog in the main under the road is the town’s problem. A clog or crack in the lateral, the pipe running from your house to the main, is usually yours. In many towns the dividing line is the property line or the curb, but it varies, so ask your town or district exactly where responsibility switches.
Say you buy a 1950s house in Brewer on city sewer. Within a year the main drain backs up, and it turns out tree roots have gotten into the old lateral between the house and the street. The town’s crew won’t touch it because it sits on your side of the line. That repair is yours to arrange and pay for.
On septic, every part is yours: the tank, the pipes, the distribution box, the drain field, and any pump or filter. That sounds worse, and in one sense it is. The upside is that you know exactly who to call, and nobody else’s schedule decides when it gets fixed.
Most septic repairs are modest, like a baffle, a filter or a lid. The expensive one is the field. Our guide to drain field failure signs and cost explains how to catch that early, and the new septic system cost guide covers what a replacement involves. Most conventional replacements run $12,000 to $25,000, and engineered or mound systems run $25,000 to $40,000 or more.
What goes wrong with each one
Neither setup is trouble free. They fail in different ways.
Sewer problems tend to be the lateral and the town. Roots, cracked or offset old pipe, a bellied section that holds water, and heavy rain overwhelming the system downstream can all show up as slow drains or a backup. If the town’s main is the problem, you wait on the town. If a sewer backup happens, the cleanup is the same unpleasant job either way.
Septic problems tend to come from neglect. A tank that goes years without a pump-out fills with solids and pushes them into the field. Heavy loads, flushed wipes, grease, and roots near the field do the rest. Frost can hit a system under a plowed or compacted area. Add a high water table or ledge, and some lots are simply harder to build on, which is why design matters.
The good news is that most septic trouble sends warning signs first: slow drains, gurgling, wet spots in the yard, or a smell. If you notice any of them, call (207) 300-9238 and we can look at the tank. If sewage is backing up into the house right now, call now. Our emergency septic service page explains how same-day and next-morning calls work, Sundays included.
Resale and buying: what a Maine buyer should know
Buyers in rural Maine expect septic. A house on a well-kept system with a pumping history and a recent inspection isn’t a hard sell. A house on a system nobody has looked at for fifteen years is.
Say you’re looking at an outer Hermon ranch with a 1980s system and no paperwork. The seller says the tank has been fine. Before you rely on that, get the system opened up and inspected, and ask the town for any records on file. Our buying a house with septic guide walks through what to ask for, and Maine’s septic inspection rules when selling explains what the law does and doesn’t require.
For a sewered house, the buyer’s questions are different. Ask about the lateral’s age and material, whether it has ever been scoped or repaired, and what the sewer bill really averages through the year. A lot of sewer trouble hides in a pipe nobody has looked at.
One more thing that comes up: a house on sewer can feel simpler to a buyer who has never owned septic, and that perception is real. A septic house with clean records and a documented pump-out schedule goes a long way toward closing that gap.
Which one fits your situation
Sewer fits you if you want the fewest moving parts to think about, you’re comfortable with a bill that you don’t control, and you’re buying where the main is already in the street. It also removes the largest single risk on a septic house, a failed field.
Septic fits you if you want control over your costs, you’re buying outside the sewered core anyway, and you’re willing to stay on a pumping schedule. A well-used system can last a long time. See how long a septic system lasts for the realistic range.
If you already have septic and a sewer line is coming down your street, the decision gets different. Some towns require connection once a main is available, and others let you choose. The connection fee, the trenching, and the timing are all set locally. We cover the steps in switching from septic to sewer in Maine.
Here’s a rough test you can use:
- If you hate surprise bills more than regular ones, lean toward sewer.
- If you want to keep monthly costs down and can handle one planned service every few years, septic is a fair deal.
- If the house is on septic and nobody can show you records, budget for an inspection before you decide.
- If the lot has ledge, a high water table or a small footprint, ask a licensed site evaluator what a replacement would look like before you commit.
A licensed site evaluator designs the system, and your local plumbing inspector issues permits and inspects the work. We don’t design or install systems. We pump, inspect, maintain and handle emergencies, and we’ll tell you honestly what we see in the tank.
Keeping a septic system cheap to own
If you end up on septic, a few habits keep it cheap to own. Pump on schedule, which for most households means every 3 to 5 years. Our how often to pump a septic tank post helps you set the interval for your house size and number of people.
Keep heavy traffic and parking off the tank and field. Don’t send grease, wipes or food scraps down the drain. Spread out laundry loads rather than running five in a row. And write down every service date, because those records are worth real money at resale.
For the EPA’s own advice on upkeep, read how to care for your septic system.
If it’s been more than a few years since anyone looked inside your tank, book a pump-out or inspection. It’s the cheapest way to find out whether your system is a bargain or a bill waiting to happen.
Frequently Asked Questions
Is septic cheaper than sewer in Maine?
Over a normal year, often yes. A routine pump-out runs $350 to $550 and most households need one every 3 to 5 years, while a sewer bill arrives every billing period for as long as you own the house. The catch is the rare big bill: a failed septic system can cost $12,000 to $40,000 or more to replace.
Who is responsible for the sewer line from the house to the street?
In most towns the homeowner owns the lateral, the pipe from the house to the main in the street, and the town owns the main itself. Rules differ by town and sewer district, so ask the public works office or district where the dividing line sits before you buy.
Does a septic system hurt resale value in Maine?
Not by itself. Buyers in rural Maine expect septic, and a documented pump-out history plus a clean inspection helps a sale. A system that is failing, undersized or has no records can slow a sale or cost you in negotiation.
Can I switch from septic to sewer if a sewer line is extended to my street?
Often you can, and sometimes the town requires it. The connection fee, the trenching and the rules are all set locally, so the town or sewer district is the one to call. The old tank then has to be pumped and abandoned the way the town and your local plumbing inspector require.