Not long ago the town of Strafford mailed 580 letters to people around Bow Lake asking about their septic systems. The answers are worth a look before you decide your tank can wait another summer.
Here’s what came back. Of the 154 owners who answered, about 41% said they pump every one to two years and 43% said every three to five. Fine. Then roughly one in seven said six to ten years, or never. That’s the people who were willing to fill out the form. The Planning Board minutes from July 2026 put it more bluntly — some residents just aren’t pumping or inspecting at all.
Worth saying: the survey wasn’t a compliance sweep. Nobody’s getting a letter from the town because of how they answered. The committee is trying to figure out how much of what feeds the algae in Bow Lake comes from septic versus lawns and roads and everything else.
About 39% of the people who answered use their place seasonally. Those are the tanks that get stretched. A camp that’s open June to Columbus Day doesn’t fill like a house, and it’s easy to lose track. Easy until it isn’t.
Keep the pumping receipts in a folder with the deed. Strafford has talked openly about septic upgrade triggers at transfer, and a buyer’s first question is going to be when the tank was last done.
We find the cover — probe for it if nobody knows — and dig it out. Then we take everything out of the tank. Liquid, scum, the sludge on the bottom. If somebody once “pumped” it by pulling the top two feet off, that wasn’t a pumping.
With the tank empty we look at the inlet and outlet baffles, rinse the effluent filter if there is one, and note how deep the sludge was. That last number is the useful one. It tells you whether your place really needs a two-year interval or can go four.
Covers on old lake lots tend to be deep. If we’re digging much over a foot to get to yours, we’ll mention a riser. You don’t have to do it. It just saves the dig every time after.
A standard 1,000–1,250 gallon residential tank runs $300–$500. A deep cover, a long hose run down a camp driveway, or a tank that hasn’t been opened in years can push it up — and you get that number before we start.
No. Strafford’s Bow Lake committee said up front the survey isn’t for compliance. It’s feeding a watershed plan that estimates how much of the lake’s nutrient load comes from septic compared to runoff and fertilizer. Answering honestly actually helps the lake. Pumping on schedule helps it more.
Most summer-only camps land somewhere around every three to five years, depending on how many people use the place and for how long. If it sleeps eight every weekend in July, lean short. The sludge depth we measure when we pump is what settles it for your tank specifically.
Either one works. Right after you open shows how the system came through the winter. Before you close means the tank sits mostly empty through the cold months. The time that doesn’t work is the Fourth of July weekend, with the house full and the tank full with it.
Much more. A holding tank has no leach field, so everything that goes in stays until a truck takes it out. Depending on use that can mean several times a season. A few of the lake properties in the town survey said they’re on one. If yours has a high-level alarm, keep it working.
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