Put an above-ground pool on firm ground away from trees, overhead lines, buried utilities and the septic system, with water draining away from the wall. Level it by cutting the high side down, never by filling the low side, then add the base your manual calls for. The pump needs a GFCI-protected outlet, not an extension cord.
Picking the spot
A filled pool weighs many tons and stays put all summer, so rule places out before you fall in love with one. Doughboy's round-pool installation instructions give a practical list: stay away from trees and their roots, overhead power lines, underground pipes and cables, and roof eaves that dump rain and debris; keep lawn sprinklers off the pool wall; put the pump and filter near an outlet; and pick a spot where you can watch swimmers and any children near the pool. Before anyone digs, contact 811 so buried lines get marked: Gopher State One Call says Minnesota homeowners are responsible for notifying it of their digging, and Diggers Hotline says Wisconsin law requires everyone, homeowners included, to contact it three working days ahead.
Keep the pool well clear of the septic system, too. The University of Minnesota's septic care guidance says to keep all foot and vehicle traffic off the tank, pipes and soil treatment area, and it names swimming pools among the future additions to plan around; a filled pool's weight is far harsher on that soil than foot traffic. Find the tank lid, the lines and the drainfield or mound before you stake anything.
Then think about sun and water. A spot with open sun warms the water faster in a short Northland summer, and a spot away from trees keeps leaves and needles out of the skimmer. Avoid low corners where snowmelt and rain collect; Doughboy says to keep runoff and yard watering from settling against the pool frame and wall, since standing water corrodes the metal parts.
Leveling by digging down, not filling
This is the step that decides whether the pool lasts. Doughboy's instructions say to remove the sod, level to the lowest spot inside the circle, and remove high points rather than filling low ones, and they repeat it later: always remove dirt to adjust the frame, never fill. Fill soil, sand or topsoil packed under the low side compresses once the full pool sits on it, and the wall ends up out of level again. The same manual allows no more than 1 inch out of level from side to side, measured across the whole footprint, which is flatter than any lawn looks.
Check level with a long straight board and a level, or a transit or laser level, and check again after each pass. On a Duluth hillside, cutting down to the low side can mean moving a lot of soil and leaving a bank on the uphill side. Doughboy warns against sudden slopes within 6 feet of the pool, against setting a pool near the crest of a slope where the ground could give way, and against backfilling soil against the wall. If the cut leaves a bank, it may need a retaining wall set back from the pool.
What goes under the pool
Once the ground is cut level and firm, the base materials smooth and protect the liner; they don't level anything. What your pool needs depends on the design, so the manual in the box wins over any general advice.
| Layer | Where it goes | Watch for |
|---|---|---|
| Native soil, cut level | The whole footprint, sod removed | Firm and undisturbed; high spots cut down, low spots never filled |
| Patio blocks | Under each upright, on steel-wall pools that call for them | Set flush and level with each other; Doughboy warns one high block wrinkles the wall |
| Sifted or screened earth | Small dips and footprints in the floor, tamped; a firmly compacted cove at the base of a steel wall | For smoothing only; a preformed cove is the other option Doughboy allows |
| Sand | Only where your pool's manual calls for it | Doughboy bans sand and other shifting material from the cove; Intex says not to set its Easy Set pools on sand |
| Ground cloth or pad | Under the liner or the pool floor | Use what the manual specifies, clear of stones, sticks and roots |
| Gravel, concrete, asphalt or wood | Not under the liner | Doughboy lists these as abrasive surfaces to avoid |
Rake out every stone, stick and root before the liner goes down, since anything left behind can puncture it. Intex says to get rid of aggressive grasses first and notes that grass under the pool will be damaged, and Doughboy says to rid the area of burrowing pests.
Power for the pump, permits and cost
The pump needs a proper outlet. Intex's Easy Set pool manual says to connect its filter pump only to a grounding-type receptacle protected by a GFCI, and not to use extension cords, timers or plug adapters. For storable pools, it keeps the pool at least 6 feet from any receptacle and calls for GFCI protection on standard outlets within 20 feet. Route the cord where a mower or trimmer can't reach it. If there's no suitable outlet within reach of the pump, a licensed electrician adds one under an electrical permit; we set up the pool and schedule around that work.
Permits depend on the pool and the city. The City of Duluth exempts prefabricated above-ground pools up to 5,000 gallons and up to 24 inches deep from a building permit, so a larger or deeper pool falls outside that exemption and needs one. Pools aren't on Superior's no-permit list, so call building inspection at (715) 395-7288 first. Our permit guide compares both cities.
Nationally, having an above-ground pool installed runs about $782–$3,096, according to Thumbtack. That's a national typical range, not our price, and Thumbtack doesn't say whether the pool itself is part of that figure; on a sloped lot, the leveling can take longer than the assembly. Our above-ground pool service quotes the digging, base, assembly and startup flat, in writing.
Can I level an above-ground pool site with sand?
No. Fill compresses and sand shifts under the weight of the water, so a pool leveled with them drifts out of level. Doughboy's instructions say to remove high points and never fill low spots, and Intex says not to set its Easy Set pools on sand at all. Cut the ground down to the low side, smooth small dips with tamped, sifted earth, and use sand only where your own manual calls for it.
Can an above-ground pool go over a septic drainfield?
No. The University of Minnesota's septic program says to keep all foot and vehicle traffic off the tank, pipes and soil treatment area, and a filled pool is heavier and more permanent than any of that. It would compact the soil that treats your wastewater and block access to the system. Find the tank, lines and drainfield or mound before choosing a spot, and keep the pool well clear of all of them.
Can an above-ground pool pump run on an extension cord?
No. Intex tells owners to plug its pool pumps only into a grounding-type outlet protected by a GFCI, and not to use extension cords, timers or plug adapters. If the nearest outdoor outlet is too far away or isn't GFCI-protected, have a licensed electrician add one under an electrical permit before setup day, then run the cord where a mower can't catch it.
How close to a slope can an above-ground pool sit?
Keep sudden slopes at least 6 feet away, the distance Doughboy's instructions give. Too near the top of a slope, the pool's weight can make the ground give way; too near the bottom, the soil can push on the wall. On a sloped yard, cut a level pad wide enough for that clearance, and hold any bank back with a wall rather than soil piled against the pool.
Ready to pick a spot? Call or text (715) 919-7956 with photos of the yard from a couple of angles and the pool's make and size, or request a setup quote. You'll get a flat written quote before any digging starts.