How to Fill A Pond in Illinois: Cost, Process & Permits
To fill in a pond, you drain the water, rehome any fish, remove the pump, liner, and rock, then backfill the cavity with clean fill dirt topped by 4 to 6 inches of topsoil, compacting in layers and grading so water drains away from the house. Most Chicago-area homeowners pay roughly $1,500 to $6,000, depending on pond size and access.
That is the short version. The full job has more moving parts, and a few of them, like grading and drainage, are where do-it-yourself projects most often go wrong here in the Midwest. Below is the honest, contractor-level walkthrough we give homeowners across Cook, DuPage, Lake, Will, and the other counties we serve.
Why Do People Remove or Fill In a Backyard Pond?
Ponds are wonderful when they work and a headache when they do not. In the yards we service around the Chicago suburbs, the reasons for getting rid of a pond are almost always practical, not aesthetic.
- Too much maintenance. A neglected pond with a failing pump becomes a green, mosquito-friendly puddle. Some owners simply do not want the weekly upkeep anymore.
- Safety concerns. Families with small children or dogs often decide an open body of water is a risk they no longer want in the backyard.
- Selling the house. Many buyers see a pond as a liability rather than a feature, so removing it can widen your buyer pool.
- A leaking or failing pond. Torn liners, sunken rock, and cracked plumbing can make an old pond cost more to fix than the owner wants to spend.
- Moving or downsizing. People clearing a property before a sale, or seniors reducing yard work, frequently want the water feature gone.
- Wrong feature, wrong yard. Sometimes the pond was inherited from a previous owner and never fit how the family uses the space.
If your issue is really about upkeep or a leak, do not assume removal is the answer yet. A worn but structurally sound pond can often be renovated for less than a full teardown, and we cover that trade-off further down.
Should You Remove the Pond Yourself or Hire a Pro?
A small preformed or liner pond is a realistic weekend do-it-yourself project for a handy homeowner. A large koi pond with a deep excavation, boulders, and a bottom drain is a different animal. Here is how the decision usually breaks down.
Do it yourself makes sense when the pond is small (under about 8 by 10 feet and less than 2 feet deep), you can reach it with a wheelbarrow, and you are comfortable renting a plate compactor. Your main costs become fill dirt, topsoil, sod or seed, disposal fees, and your own labor.
Hire a pro when the pond is large or deep, sits near a foundation or property line, holds heavy boulders, or has buried electrical and plumbing. A professional pond removal service brings the excavator, the disposal plan, and, most importantly, the grading knowledge to keep water away from your house.
The single biggest reason we get called after a failed do-it-yourself fill-in is standing water. Homeowners backfill a low spot, the soil settles over winter, and by spring thaw they have a soggy depression that never dries out. Compaction and grading are not optional steps.
What Is the Full Process to Fill In a Pond?
Filling in a backyard pond is straightforward when you follow the sequence. Skipping steps, especially compaction and grading, is what creates problems. Here is the complete step-by-step process.
Step-by-Step Pond Removal Checklist
- Call JULIE 811 first. In Illinois, call 811 or submit a locate request at least a few business days before you dig. This is free, it is the law, and it protects the buried gas, electric, and utility lines that may run near your pond.
- Drain the water. Use a submersible or utility pump to move the water. Dechlorinated pond water can often go onto lawn or garden beds; do not dump large volumes into a storm drain, and never send it where it will flood a neighbor.
- Rehome the fish safely. Before draining fully, net your koi and goldfish into buckets of their own pond water. Rehome them with a local pond owner, a water-garden club, an aquarium store that accepts them, or a fellow hobbyist. Do not release them into any Illinois lake, river, or retention pond; it is illegal and harmful.
- Remove the pump and equipment. Disconnect and pull the pump, filter, UV clarifier, autofill line, and any lighting. Have a licensed electrician safely disconnect and cap wiring if the pond had hardwired power.
- Pull the rock and gravel. Remove boulders, cobble, and gravel from the pond and the surrounding border. Set aside anything you want to reuse in the landscape; the rest goes to disposal.
- Remove the liner and underlayment. Cut and roll out the rubber liner and the felt underlayment beneath it. These are bulky and heavy once wet, so plan your haul-out.
- Decide full removal versus partial fill. For a shallow pond, a partial fill (leaving the excavated hole and filling it) is common. For a deep pond or one near a structure, full removal of all materials plus clean backfill is the durable choice.
- Backfill with clean fill dirt. Fill the cavity in 6 to 8 inch lifts using clean fill, not organic material, wood, or construction debris that will rot and settle.
- Compact each layer. Run a plate compactor over every lift. This is the step do-it-yourselfers skip and regret. Proper compaction prevents the sunken, soggy spot that shows up after the first freeze-thaw season.
- Top with topsoil. Add 4 to 6 inches of quality topsoil over the compacted fill so grass and plants can root.
- Grade for drainage. Slope the finished surface so water runs away from your home, ideally a drop of about 6 inches over the first 10 feet from any foundation. Never leave a low point where the pond used to be.
- Restore the lawn or landscape. Lay sod for instant results or seed for a lower-cost finish. Water it in and keep an eye on the area through the next season in case minor settling needs a topsoil touch-up.
How Much Does Pond Removal Cost in Illinois?
Cost to fill in a pond in Illinois depends mostly on size, depth, access for equipment, how much rock and liner has to be hauled away, and whether you want the yard finished with sod. The figures below are typical ranges we see across the Chicago area, not fixed quotes. Every site is different, and prices vary with disposal fees and access.
| Pond size / scenario | Typical size | Typical cost range | What is included |
|---|---|---|---|
| Small preformed or liner pond | Up to about 8 x 10 ft | $1,500 to $3,000 | Drain, remove liner and pump, backfill, basic grading and seed |
| Medium backyard pond | About 10 x 15 ft | $3,000 to $5,000 | Full material removal, clean fill, compaction, grade, seed or partial sod |
| Large koi pond or deep water feature | 15 ft and up, 2 ft+ deep | $5,000 to $10,000+ | Excavator work, heavy rock and liner disposal, full backfill, grade, sod |
| DIY materials only (small pond) | Homeowner labor | $300 to $900 | Fill dirt, topsoil, sod or seed, disposal and compactor rental |
A few things move the number. Poor equipment access, so the crew has to wheelbarrow everything by hand, adds labor. Tearing out large boulders and lots of rock adds disposal weight and cost. Choosing sod over seed adds material. And a deep koi pond costs more than its footprint suggests because there is far more volume to fill.
Full Removal vs. Partial Fill vs. Converting the Pond
You do not have to choose between “keep the pond” and “bulldoze it.” There is a middle path that many homeowners are happier with, especially if what you actually dislike is the maintenance and the open water, not the sound of moving water itself. Here is how the three main options compare.
Full removal gives you flat, open lawn and ends the maintenance for good. Partial fill is the budget route for shallow ponds where full excavation is not necessary. Converting keeps the part people love, the sound and movement of water, while eliminating the standing water, fish care, and most of the cleaning. If maintenance and safety are your real reasons, a conversion is worth a serious look before you spend money erasing a feature you may miss.
Are There Better Alternatives to Demolition?
Often, yes. Before you commit to a full teardown, consider whether one of these fits your yard and budget better. We install all three around the Chicago suburbs.
- Convert to a pondless waterfall. The water disappears into a gravel-filled basin below grade and recirculates, so there is no open pool. It is safe around kids and pets and needs a fraction of the upkeep. See our pondless waterfall installation options if you like the sound of water but not the pond.
- Build a planted rain garden. A shallow, planted depression using native Illinois plants can turn a problem pond area into a low-maintenance feature that also helps manage stormwater, which matters on the clay-heavy soils common across the region.
- Downsize to a small low-maintenance feature. A compact bubbling boulder or urn fountain gives you movement and interest in a much smaller footprint with minimal cleaning.
- Repair or renovate the existing pond. If the pond is failing but you actually like it, a renovation is frequently cheaper than removal plus a future feature. Our pond repair and renovation service addresses leaks, worn liners, and tired equipment. It is worth reading the signs your pond needs a rebuild or upgrade before you decide, and comparing the typical pond renovation cost against a full removal.
What Illinois-Specific Rules and Conditions Should You Know?
Removing a pond in Illinois comes with a handful of local realities that homeowners in other climates do not face. Get these right and the project goes smoothly.
Call JULIE 811 before any digging. Illinois law requires a locate request before you dig. Call 811 or file online at least a couple of business days ahead. Pond pumps and lighting often ran on buried electrical, so lines may cross the exact area you plan to excavate.
Plan drainage around freeze-thaw. The Chicago area sees hard winter freezes, and frost drives roughly 3 to 4 feet deep in our soils. Poorly compacted backfill heaves and settles through freeze-thaw cycles, so a spot that looked level in fall can sink into a puddle by spring thaw. Compact in layers and grade with a real slope away from the house.
Watch the clay soil. Much of the region sits on heavy clay that drains slowly. That is exactly why you must not leave a low point where the pond was, because water will sit there. Grade positively and, in tricky spots, consider a rain garden or a drain tile solution instead of fighting the soil.
Dispose of liner and rock properly. Rubber liner, felt underlayment, and pond rock are not standard curbside pickup. They go to a landfill or a construction and demolition disposal site, and the weight drives disposal cost, especially on larger ponds. A pond removal service usually rolls disposal into the quote.
Check local municipal rules. Most simple backyard fill-ins do not need a permit, but rules vary by town across Cook, DuPage, Kane, Lake, McHenry, Will, Kendall, Grundy, and DeKalb counties. If your pond ties into a drainage easement, a stormwater system, or sits near a wetland, or if you plan major regrading, call your municipal building or public works department first. When in doubt, a quick phone call saves a headache.
What Mistakes Should You Avoid When Filling In a Pond?
These are the errors we most often get called to fix after the fact.
- Skipping compaction. Loose fill settles into a sunken, soggy scar in the lawn within a year.
- Using dirty or organic fill. Wood, sod chunks, leaves, and construction debris rot and collapse. Use clean fill dirt only.
- Leaving a low spot. Even perfect fill fails if the final grade dips. Water finds the low point, and clay soil holds it there.
- Dumping fish in a public waterway. Releasing koi or goldfish into Illinois lakes and ponds is illegal and harms native ecosystems.
- Ignoring JULIE 811. Hitting a gas or electric line is dangerous and costly. The locate is free, so make the call.
- Removing before you are sure. A pond is far cheaper to keep than to rebuild later. Weigh renovation and conversion first.
How Long Does Pond Removal Take?
A small liner pond can be drained, removed, filled, and seeded in a single day. A medium pond typically runs one to two days. A large koi pond with heavy rock and full sod restoration can take two to four days once you account for hauling, backfilling in compacted lifts, and finish grading. Saturated spring soils in the Chicago area are harder to compact cleanly, so weather affects the schedule too.
Ready to Remove, Fill, or Rethink Your Pond?
Whether you want a pond gone for good, filled in cleanly with proper drainage, or converted into a safer low-maintenance feature, Midwest Pond Features can help you weigh the honest trade-offs for your property. We serve Chicago and the surrounding counties, including Cook, DuPage, DeKalb, Grundy, Kane, Kendall, Lake, McHenry, and Will. Request a free quote and on-site assessment and we will give you straight answers on cost, process, and whether removal or a smarter alternative fits your yard best. Call us at [phone number] to get started.
Frequently Asked Questions
How much does it cost to fill in a pond in Illinois?
Most Chicago-area homeowners pay roughly $1,500 to $6,000 to fill in a backyard pond, with large or deep koi ponds running $10,000 or more. Cost depends on size, depth, equipment access, how much rock and liner must be hauled away, and whether you finish with sod or seed. Every site is different, so get a quote.
Do I need a permit to fill in a backyard pond in Illinois?
Most simple backyard fill-ins do not require a permit, but rules vary by municipality. You do need to call JULIE 811 for a utility locate before digging. If your pond connects to a drainage easement, stormwater system, or sits near a wetland, check with your local building or public works department first.
What do I do with the fish from my koi pond?
Net your koi and goldfish into buckets of their own pond water before draining fully. Rehome them with a local pond owner, a water-garden club, or an aquarium store that accepts fish. Never release them into any Illinois lake, river, or retention pond, since it is illegal and harms native wildlife.
Can I just fill a pond with dirt and plant grass?
Not quite. You must use clean fill dirt in compacted 6 to 8 inch layers, top it with 4 to 6 inches of topsoil, and grade so water drains away from the house. Skipping compaction or leaving a low spot causes settling and standing water, especially after Illinois freeze-thaw cycles.
Is it cheaper to repair a pond or remove it?
Repair is often cheaper than full removal, especially if the pond is structurally sound and you actually like it. Renovation addresses leaks, worn liners, and tired equipment for less than a teardown plus a future feature. Compare renovation cost against removal before deciding, since removing a pond you later miss is the most expensive path.
Can I convert my pond instead of removing it?
Yes. Converting an open pond into a pondless waterfall keeps the sound and movement of water while eliminating standing water, fish care, and most maintenance. It is safer around children and pets. Conversion is a popular middle path for homeowners whose real complaint is upkeep and safety rather than the water itself.
