10 Signs You Need Pond Repair (and How to Fix Them)

By LWI Designs — Pond Repair Experts in Downers Grove & Chicagoland

Even the best-built ponds eventually need attention. Over time, liners shift, pumps clog, and weather takes its toll. Knowing when to call a professional for pond repair services can make the difference between a simple fix and a full rebuild.

At LWI Designs, we specialize in diagnosing and repairing water features across Downers Grove, Naperville, Hinsdale, and the greater Chicagoland area. Below are ten clear signs your pond may need expert care — plus what you can do next.

1. The Water Level Keeps Dropping

If your pond loses more than an inch of water per day, you likely have a leak.

Common culprits include:

• A cracked , punctured, or torn pond liner

• Leaky plumbing or fittings

• Gaps in the waterfall or skimmer area

• Settled edges

  
  

Shut off the pump and see if the water keeps falling. If it does, the liner is the issue. If not, the plumbing may be.  Learn more about our Pond Repair Services

2. Your Pump Sounds Different or Stops Working

A noisy or inconsistent pump can signal blockages, airlocks, or motor wear. Ignoring it risks a full system failure and costly water loss. We inspect and replace pond pumps, ensuring proper circulation and extending equipment life.

3. Murky or Green Water That Won’t Clear

Cloudy, foamy, or green water means your filtration system or ecosystem balance is off.

Possible causes:

• Clogged filters

• Excess fish waste or organic buildup

• Algae blooms

  
  

Our pond maintenance team restores clarity through filter cleaning, bacterial treatments, and plant balance.  Explore Pond Maintenance Services

4. Reduced Waterfall Flow

When your waterfall weakens, it’s usually a clogged intake, low water level, or failing pump. A restricted flow reduces oxygen levels, which can harm fish and lead to stagnant water.

5. Cracks, Leaks, or Shifts in the Rock Work

Midwestern freeze–thaw cycles cause rocks and edging to move. Even small shifts can redirect water out of the pond. If you see exposed liner or damp soil near the edges, you may be able to adjust the rockwork and edging to fix the simple problem. If you still have issues, it’s time to schedule pond leak detection.

6. Strange Odors Coming From the Pond

A strong “swampy” or “rotten” smell means organic matter (like decaying leaves or fish waste) is decomposing without proper oxygen. This can quickly cause fish loss or algae blooms. We use aeration and cleaning methods to restore a healthy environment.

7. Fish Acting Strangely or Dying

Fish gasping at the surface, hiding constantly, or showing discoloration indicates low oxygen levels, toxins, or pH imbalance. These issues are often linked to pump failure or excess debris. Our pond specialists test water quality and re-balance the ecosystem safely.

8. Visible Liner Damage or Exposed Edges

If you can see liner above the waterline or notice wrinkles, tears, or punctures, you likely have a pond liner issue. Quick patching can work, but it's best to let a professional handle it. Professional liner patching or liner replacement ensures long-term protection.

9. Your Pond Freezes or Overheats Too Quickly

Seasonal temperature swings in Illinois can stress your pond. Rapid freezing or overheating may mean improper depth, weak circulation, or missing aeration. Adding aerators or adjusting water movement keeps fish and plants safe year-round.

10. Excessive Debris or Sediment Build-Up

If you’re constantly cleaning your skimmer basket or removing sludge, your pond likely needs a professional cleanout. Too much debris clogs filters and disrupts water chemistry, a common call we receive in early spring and late fall.

Professional Pond Repair Services in Chicagoland

When any of these issues appear, professional help prevents long-term damage. At LWI Designs, we provide complete pond repair and maintenance services, including:

• Pond leak detection

• Liner repair and replacement

• Pump and plumbing repair

• Edge reconstruction or Renovation

• Seas

• onal maintenance programs

We work with koi ponds, waterfalls, fountains, and custom water features throughout Downers Grove, Naperville, Oak Brook, and the greater Chicago suburbs.

Contact LWI Designs

If your pond is losing water, turning green, or simply not performing as it should — WE CAN HELP!