Ecosystem Pond Builders in New Hampshire
New England Aquatic Landscaping builds ecosystem ponds in southern New Hampshire, from Nashua and Bedford to Windham and Portsmouth. In New Hampshire the ground freezes deeper and winters run longer than most of Massachusetts, so every pond we build here is shaped for depth, circulation, and fish that spend months under ice.
Learn more about our ecosystem ponds service, or see everything we do in our service area.
2026 Regional CAC of the Year
Master Certified Aquascape Contractor
Combat Veteran Owned & Operated
18 Years Building in New England
How we build an ecosystem pond
Our ponds follow the Aquascape method. A skimmer pulls debris off the surface and houses the pump. Water travels to a biological waterfall filter, where bacteria break down waste, then spills back over stone into the pond. Underlayment and a 45 mil EPDM liner sit beneath rock and gravel, and plant shelves give lilies and marginals a home.
It all recirculates, so you are not running a hose into it. Fish, plants, and bacteria balance each other, which keeps upkeep low. An auto-fill valve is optional if you would rather not top off by hand.
Granite, frost, and outwash soils
New Hampshire is granite country, and ledge often turns up close to the surface in towns like Bedford, Amherst, and Windham. We plan excavation around it rather than fighting it, and sometimes a rock outcrop becomes the anchor for a waterfall.
Along the Merrimack River in Nashua, Hudson, and Merrimack, you are more likely to find sandy glacial outwash that digs easily but needs careful shaping. Deeper frost and longer winters make our 2 foot standard depth important. Portsmouth on the Seacoast adds salt air to the list. Our crew travels from Cherry Valley and books New Hampshire builds in blocks.
Pond packages and price ranges
We build four package sizes. Serenity Oasis is 6 by 8 feet and 2 feet deep, at $15,000 to $20,000. Garden Jewel, our most popular, is 8 by 10 feet at $25,000 to $29,000. Backyard Haven at 10 by 15 feet runs $31,000 to $42,000, and Luxury Retreat at 20 by 15 feet runs $110,000 to $142,000.
Add-ons change the total: waterfalls roughly $1,500 to $13,500 by drop, streams roughly $2,650 to $18,000 by length, and lighting roughly $3,500 to $7,700. Ledge removal and tight access raise costs too.
Steps to a finished pond
Start with a free phone consultation. Then Shawn Cutroni visits for a Discovery Meeting, studies your slope, sun, soil, and views from the house, and designs the pond around them. Final pricing comes after that visit, and Hearth financing offers 2 to 12 year terms.
We schedule the build into our next New Hampshire block. Fall is a strong season here because the ground is still workable and plants settle in before spring. Once water is flowing, we show you how the skimmer and filter work and what to expect through your first winter.
Why New Hampshire homeowners call us
Homeowners across Amherst, Bedford, Hollis, Hudson, Merrimack, Milford, Nashua, Windham, Salem, and Portsmouth call us because they want a pond built for New Hampshire winters. We have built more than 200 water features since 2008, and our crew plans each New Hampshire trip so builds and follow-up visits happen together.
Full details, photos, and pricing tiers are on the Ecosystem Ponds service page, and our pricing calculator gives a ballpark before we visit.
Towns we serve in New Hampshire
Pond Construction across New England
Guides for New Hampshire pond owners
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Frequently asked questions
Will my fish survive a New Hampshire winter?
Yes, when the pond is built correctly. Our standard 2 foot depth, combined with proper circulation, lets fish rest in deeper water under the ice through the cold months. We also show you how to keep a small opening in the ice so gases can escape. Shallow kit ponds are what usually fail here.
What if you hit ledge while digging?
It happens often in New Hampshire, and we plan for it. During the Discovery Meeting we look for signs of shallow rock and talk through options. Sometimes we adjust the pond shape, sometimes we build up rather than down, and sometimes the ledge becomes part of the design. Major rock removal does affect cost.
Do you build ponds in Portsmouth and the Seacoast?
We do. Seacoast properties bring salt air and wind into the planning, so we pay attention to plant choice, equipment housing, and where debris will blow. Portsmouth projects are scheduled with our other New Hampshire work, so the crew can stage the build and the follow-up visit in the same trip.
How much does a backyard pond cost to run?
Most of our ecosystem ponds cost roughly $25 to $75 per month in electricity during the season, depending on pump size and how many hours it runs. Many New Hampshire owners shut down for winter, which brings the yearly cost down. Choosing an energy efficient pump at the design stage makes a real difference.
Ready to talk about your New Hampshire project?
Book a Discovery Meeting and we will add your property to our next New Hampshire visit.