Pond Repair and Renovation Contractor in Plymouth, Massachusetts

Most calls start with a pond that keeps dropping, a waterfall that leaks behind the spillway, or water that turns green no matter what you add. We trace the problem before touching anything: checking the waterfall box, the edges, the plumbing, and the liner itself.

From there the fix might be a patch and edge rebuild, a new 45 mil EPDM liner, a skimmer or biological falls added to a pond that never had real filtration, deeper sections so fish can overwinter, fish caves, an auto-fill valve, or lighting. Some owners convert a tired pond into a pondless waterfall.

Plymouth soils drain fast, which is good for construction but hard on a pond whose edge has slumped. When rocks settle into loose sand, the liner edge can drop below the waterline and the pond leaks from the rim rather than from a hole.

Low ground near wetlands can do the opposite, with groundwater lifting the liner and creating bubbles. Pine and oak roots find their way under liners over time, and freeze and thaw cycles shift rocks along the edge. Near the coast, salt air and wind dry out exposed liner and speed evaporation, so a pond that looks like it is leaking in July sometimes just needs an auto-fill.

Small repairs such as a single leak, an edge rebuild, or a pump swap run roughly $1,300 to $3,750. Mid-size renovations that rework a waterfall or add filtration run roughly $3,750 to $5,000. Full renovations run $5,000 and up, and a complete rebuild of an older pond is often well beyond that.

Many Plymouth projects begin with an Exploratory Drain and Clean, roughly $1,300 to $2,500, so the crew can see the liner, plumbing, and rockwork empty before quoting. What moves the number most is the condition of the liner, how much stone has to come out, and whether the pond needs real filtration added.

You call, describe what the pond is doing, and send photos if you have them. Shawn then comes out for a Discovery Meeting to look at the pond, the waterfall, and the equipment. If the cause is clear, you get a repair plan and range on the spot.

If it is not, we schedule the drain and clean. Fish go into a holding tank in their own pond water, the pond is emptied, and the crew inspects every seam and fitting. Once the work is done, the pond is refilled with dechlorinated water, the fish are temperature matched, and the system is tested before we leave.