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For public works & municipalities

Aeration for municipal, stormwater and lagoon water management

Stormwater, retention, community and lagoon water bodies are visible, accountable and complaint-driven. Koenders aeration circulates and oxygenates them from the bottom up, cutting the algae, odor and stagnation that generate public complaints, at any scale, with or without a power line.

Recommended

Sized to your pond and power

From single ponds to multi-site programs, we match the system to each location. We support public procurement: request product specifications and a quote for your sites, or a bid-ready recommendation.

Koenders HD750 Electric Aeration System

Koenders HD750 Electric Aeration System

$2,145.00

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Koenders DC200 Direct Drive Solar Aeration System

Koenders DC200 Direct Drive Solar Aeration System

$3,995.00

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Diffuser Airstone 7"

Diffuser Airstone 7"

$59.95

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The challenge

The problems ratepayers notice

Public ponds are visible and accountable, so water-quality problems become complaints fast.

Algae & odour

Algae & odour

Stagnant, nutrient-rich water blooms and smells, drawing public complaints and advisory concerns.

Muck & sediment

Muck & sediment

Organic sediment builds up on the bottom, reducing capacity and feeding the next algae bloom.

Chemical concerns

Chemical concerns

Repeat copper-sulfate dosing treats the symptom, not the cause, and is harder to defend publicly.

The approach

Aeration that scales with the site

One approach that works from a single retention pond to a multi-site municipal program.

Off-grid or powered

Off-grid or powered

Windmill and solar for remote sites, high-flow electric where grid power is available.

Circulate & oxygenate

Circulate & oxygenate

Bottom-up aeration keeps the whole water body moving, reducing odor, algae and stagnation.

Manage nutrients at the source

Manage nutrients at the source

Oxygen at the sediment supports the bacteria that break down muck instead of letting it accumulate.

Low-chemical & defensible

Low-chemical & defensible

A responsible approach that is easy to stand behind publicly and plan around a public budget.

Windmill, solar and electric aeration

Oxygen for every pond, on or off the grid

Koenders got its start in 1988 building wind-powered aeration for farm dugouts. Today that same rugged, low-operating-cost engineering carries across our full lineup of windmill, solar and electric systems, each matched to your pond size and power source, so water stays healthy on farms, acreages and remote sites across the continent.

From operators

Trusted on farms, courses and municipal water

Our community is proud of its ponds again.
Sandstone HOA · Community association
John holding a rainbow trout from his aerated pond near Calgary, Alberta
Our Koenders windmill has aerated this pond for over 20 years. Even after a long, cold winter there was no fish kill, and we still catch beautiful trout.
John · Calgary, Alberta
Before: Clark's farm pond covered in green algae
Before
After: Clark's pond running clear with a Koenders windmill
After
The before and after says it all — clear water on a 10-acre irrigation pond from a Koenders windmill and Nature's Pond Conditioner.
Clark · Calgary, Alberta
A wedding beside Dick's Koenders-aerated pond in Olds, Alberta
We've run a Koenders windmill for 10+ years. Our pond looked so good we held a wedding right next to it.
Dick · Olds, Alberta
Before: Sam's pond covered in green algae in Granbury, Texas
Before
After: Sam's clear pond with a Koenders windmill, 7 weeks later
After
We saw a drastic difference in 7 weeks. The picture says it all — couldn’t be happier.
Sam · Granbury, Texas
Bryan holding a large rainbow trout from his aerated pond in Pincher Creek, Alberta
Nature's Pond Conditioner and our Koenders windmill are a great combination — clean, clear water and healthy, large rainbow trout.
Bryan · Pincher Creek, Alberta
Blair and Jax ice fishing on their Koenders-aerated pond in Manitoba
Thanks to Koenders aeration and Nature's Pond Conditioner, we're able to enjoy ice fishing again this winter.
Blair and Jax · Manitoba
Jim and his friend erecting their Koenders windmill in Wisconsin
Great quality. My best friend and I put this windmill up in our retirement — no problems with parts, and it keeps the muck and algae down.
Jim · Wisconsin

Shop the range

Ready to get your water moving?

Aeration systems, fountains and accessories: everything to keep your water healthy and moving through the season.

Koenders HD550 High Flow Electric Aeration System

Koenders HD550 High Flow Electric Aeration System

$1,699.00

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Koenders 6100 Fountain System

Koenders 6100 Fountain System

$1,645.00

Select Configuration
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Cutter ‘N’ Rake

Cutter ‘N’ Rake

$399.95

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HD Aerator Accessory Kit

HD Aerator Accessory Kit

$144.95

Select Type
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Nature's Pond Conditioner (Spring & Summer)

Nature's Pond Conditioner (Spring & Summer)

$39.95

Select Size
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Assurance

A low-chemical approach you can stand behind

For public and community water, we focus on aeration and circulation to support water quality rather than chemical dosing, an approach that is easier to explain to residents and stakeholders. We size to each site and support single ponds through multi-site programs.

Talk to our team
  • Aeration and circulation support water quality without adding chemicals to the water
  • Off-grid or powered options so any site, remote or serviced, is covered
  • Sized per pond and scalable from a single site to a multi-site program
  • Parts and support available across North America

FAQ

Common questions

How do you manage algae and odour in a stormwater or retention pond?
Most algae and odor in a retention pond trace back to nutrient-rich water sitting still, so the bottom goes low in oxygen and organic matter rots. Bottom-up aeration circulates the whole water column and keeps oxygen at the sediment, which reduces the conditions that drive blooms, foul smells and complaints.
Is copper sulfate cost-effective for a public pond over the long term?
Copper sulfate can knock down a visible bloom, but it treats the symptom, not the cause. The algae it kills sink and rot, which returns nutrients to the water and can feed the next bloom, so many sites end up dosing repeatedly season after season. Aeration targets the underlying nutrient and oxygen problem, which is easier to defend on a public budget.
How does aeration actually reduce nutrients in the pond?
Aeration keeps oxygen present all the way to the sediment, which supports the aerobic bacteria that break down organic muck and cycle nutrients rather than letting them accumulate. Circulating the water also limits the still, stratified conditions that let algae bloom. It manages the nutrient load over time instead of masking a single bloom.
What buffer-zone or setback guidance applies to a municipal pond?
Vegetated buffer strips around a pond slow runoff and filter nutrients before they reach the water, which supports the aeration doing its job below the surface. Setback distances and shoreline requirements vary by jurisdiction, so confirm the specifics with your local authority. We can help plan aeration placement around your site constraints.
What about blue-green algae and public-safety liability?
Blue-green algae blooms are a public-health and liability concern for any pond the public can reach, and they thrive in warm, still, nutrient-rich water. Aeration attacks those conditions by keeping the water moving and oxygenated, which discourages the stagnation these blooms favour. Always follow your local health authority guidance on advisories and access.
Can you help with wastewater lagoons or a multi-site program?
Yes. Beyond stormwater and community ponds, aeration supports wastewater-lagoon treatment by adding oxygen for the bacteria that break down waste, and we work on remediation applications as well. We regularly help public works teams standardize aeration across multiple sites. Contact us and we will build a recommendation for your locations and budget.
Can you support a public bid or provide spec sheets for an RFP?
Yes. We work with public works and municipal buyers on formal procurement. Contact us with your site details and we can provide product specifications and documentation to support a bid or RFP, and scope a per-site recommendation. Systems ship from our US locations in Huntingburg, Indiana and Albion, New York.

Cleaner public water, fewer complaints

Tell us about your sites and we will size the right aeration for each one, with spec sheets and a quote for procurement on request.