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Canada 2025: Top 5 Underground Manure Storage Pits — Expert Guide to Regulatory-Ready, High-Capacity Subsurface Systems (Which One Fits Your Farm?)

Published on Thursday, August 21, 2025

Subsurface pits engineered for high-capacity manure retention, maximizing land use and reducing surface exposure. Often reinforced and fitted with ventilation and leak-detection systems to support regulatory compliance and environmental protection. In the Canadian market, underground manure storage appeals to producers who need to balance high-volume containment with strict provincial nutrient management rules and limited available acreage. Buyers value systems that reduce odor and runoff risks, improve biosecurity, and protect manure during long freezes. Practical preferences include engineered liners, remote monitoring, integrated pumping and agitation, and warranty-backed installations from established manufacturers. Cost-conscious operators also look for lifecycle savings through reduced land disturbance, lower hauling, and minimized nutrient loss for better crop return on investment.

Quick Menu

1. Best High-Capacity Solution

2. Best Customizable Sizes

3. Best Pump & Agitation Integration

4. Best Large-Scale Lagoon System

5. Best Value Solution

1
BEST HIGH-CAPACITY SOLUTION

Westeel Underground Slurry Storage System

Westeel Underground Slurry Storage System
🏠 Local Product

Westeel’s underground slurry storage system is positioned as the best-in-class option for farms that need a robust, modular steel solution with proven longevity; its corrugated steel construction and protective coatings deliver low lifecycle maintenance and attractive cost-per-cubic-meter compared with cast-in-place concrete systems. Compared with the other products on this list, Westeel trades some advanced solids-handling features for a lower upfront CAPEX and faster installation schedule, making it financially optimal for operations prioritizing durable, scalable liquid storage.

4.5
★★★★☆

  • Galvanized longevity, rust-proof grin

  • Low-profile footprint, neighbor-friendly wink

  • Galvanized longevity, rust-proof grin

  • Low-profile footprint, neighbor-friendly wink

Review Summary

90%

"Users say the Westeel Underground Slurry Storage System is robust and well engineered, offering excellent long-term durability and low maintenance; common downsides are the high upfront cost and need for professional installation."

  • High-capacity storage, sleeps quietly

  • Galvanized steel construction with corrosion-resistant coatings for long service life.

  • High-capacity storage, sleeps quietly

  • Galvanized steel construction with corrosion-resistant coatings for long service life.

Increased Safety & Security

Time-Saving Convenience

Westeel’s underground slurry storage system is positioned as the best-in-class option for farms that need a robust, modular steel solution with proven longevity; its corrugated steel construction and protective coatings deliver low lifecycle maintenance and attractive cost-per-cubic-meter compared with cast-in-place concrete systems. Compared with the other products on this list, Westeel trades some advanced solids-handling features for a lower upfront CAPEX and faster installation schedule, making it financially optimal for operations prioritizing durable, scalable liquid storage.

  • Galvanized longevity, rust-proof grin

  • Low-profile footprint, neighbor-friendly wink

  • High-capacity storage, sleeps quietly

  • Galvanized steel construction with corrosion-resistant coatings for long service life.

  • Modular capacity options and engineered load-bearing design for reliable below-grade installation.

  • Galvanized longevity, rust-proof grin

  • Low-profile footprint, neighbor-friendly wink

  • High-capacity storage, sleeps quietly

  • Galvanized steel construction with corrosion-resistant coatings for long service life.

  • Modular capacity options and engineered load-bearing design for reliable below-grade installation.

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$50,000-200,000 CAD

2
BEST CUSTOMIZABLE SIZES

Penta TMR Underground Manure Tank

Penta TMR Underground Manure Tank

Penta TMR offers an integrated underground manure tank designed around active mixing and feed-integration technologies, reducing nutrient stratification and pumping energy over the service life; this technical emphasis on agitation and homogenization makes it a strong choice where manure quality and uniformity affect downstream spreading or biogas systems. While typically commanding a higher initial price than passive tanks like Husky or Westeel, Penta’s tanks can lower operational costs and nutrient variability for farms that value improved treatment performance.

4.1
★★★★☆

  • Integrated mixing-ready, feed-smart smile

  • Stainless internals, corrosion-shy

  • Integrated mixing-ready, feed-smart smile

  • Stainless internals, corrosion-shy

Review Summary

82%

"Buyers praise the Penta TMR Underground Manure Tank for efficient performance and compact design, though some report occasional seal and valve maintenance and a limited dealer/service network in some regions."

  • Easy-service ports, farmer-friendly

  • Available in multiple material options (rotomolded polyethylene or steel) for corrosion resistance.

  • Easy-service ports, farmer-friendly

  • Available in multiple material options (rotomolded polyethylene or steel) for corrosion resistance.

Time-Saving Convenience

Skill Development & Mastery

Increased Safety & Security

Penta TMR offers an integrated underground manure tank designed around active mixing and feed-integration technologies, reducing nutrient stratification and pumping energy over the service life; this technical emphasis on agitation and homogenization makes it a strong choice where manure quality and uniformity affect downstream spreading or biogas systems. While typically commanding a higher initial price than passive tanks like Husky or Westeel, Penta’s tanks can lower operational costs and nutrient variability for farms that value improved treatment performance.

  • Integrated mixing-ready, feed-smart smile

  • Stainless internals, corrosion-shy

  • Easy-service ports, farmer-friendly

  • Available in multiple material options (rotomolded polyethylene or steel) for corrosion resistance.

  • Designed for below-grade installation with low-profile covers and convenient access ports.

  • Integrated mixing-ready, feed-smart smile

  • Stainless internals, corrosion-shy

  • Easy-service ports, farmer-friendly

  • Available in multiple material options (rotomolded polyethylene or steel) for corrosion resistance.

  • Designed for below-grade installation with low-profile covers and convenient access ports.

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$30,000-120,000 CAD

3
BEST PUMP & AGITATION INTEGRATION

Boerger Below-Grade Manure Storage Pit

Boerger Below-Grade Manure Storage Pit

Boerger’s below-grade manure storage pit stands out as the market leader for heavy-duty solids handling, pairing a purpose-built pit design with high-efficiency pumps and separation options; the system is engineered to minimize blockages and simplify transfer of high-solid manure, which reduces downtime and haulage costs for intensive livestock operations. Compared to simpler underground tanks, Boerger accepts a higher capital outlay but offsets that through reduced maintenance and lower long-term pumping and transport expenses on farms producing slurry with significant fiber content.

4.4
★★★★☆

  • Solids-handling muscle, beast-mode ready

  • Sealed odour control, nose-happy

  • Solids-handling muscle, beast-mode ready

  • Sealed odour control, nose-happy

Review Summary

87%

"Customers appreciate the Boerger Below-Grade Manure Storage Pit for its heavy-duty components and reliable pump integration, with a few users noting pump-seal maintenance and challenging initial excavation requirements."

  • Maintenance access, bolt-friendly

  • Engineered to integrate heavy-duty pumps and agitators for effective solids handling.

  • Maintenance access, bolt-friendly

  • Engineered to integrate heavy-duty pumps and agitators for effective solids handling.

Increased Safety & Security

Time-Saving Convenience

Boerger’s below-grade manure storage pit stands out as the market leader for heavy-duty solids handling, pairing a purpose-built pit design with high-efficiency pumps and separation options; the system is engineered to minimize blockages and simplify transfer of high-solid manure, which reduces downtime and haulage costs for intensive livestock operations. Compared to simpler underground tanks, Boerger accepts a higher capital outlay but offsets that through reduced maintenance and lower long-term pumping and transport expenses on farms producing slurry with significant fiber content.

  • Solids-handling muscle, beast-mode ready

  • Sealed odour control, nose-happy

  • Maintenance access, bolt-friendly

  • Engineered to integrate heavy-duty pumps and agitators for effective solids handling.

  • Reinforced concrete or steel pit options with gas-tight covers to control odors and emissions.

  • Solids-handling muscle, beast-mode ready

  • Sealed odour control, nose-happy

  • Maintenance access, bolt-friendly

  • Engineered to integrate heavy-duty pumps and agitators for effective solids handling.

  • Reinforced concrete or steel pit options with gas-tight covers to control odors and emissions.

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$40,000-150,000 CAD

4
BEST LARGE-SCALE LAGOON SYSTEM

Cadman Power Equipment Underground Lagoon System

Cadman Power Equipment Underground Lagoon System
🏠 Local Product

Cadman’s underground lagoon system targets large-scale volume storage by combining heavy-duty HDPE liners with turnkey excavation and installation services, delivering one of the lowest per-cubic-meter costs for very large manure volumes. Unlike rigid tank solutions from Westeel or Husky, Cadman’s lagoon approach requires more land and regulatory planning but offers substantial savings for farms needing maximum capacity at minimal material cost and with fewer structural constraints.

3.9
★★★☆☆

  • Modular lagoon panels, puzzle-friendly

  • Agitation-ready ports, slurry-dancer

  • Modular lagoon panels, puzzle-friendly

  • Agitation-ready ports, slurry-dancer

Review Summary

78%

"Farmers like the Cadman Power Equipment Underground Lagoon System for its cost-effective, customizable design, but many mention variable installation support and occasional delivery delays depending on location."

  • Heavy-duty frame, anchor-strong

  • Underground lagoon designs use geotextile and HDPE liners to minimize seepage risk.

  • Heavy-duty frame, anchor-strong

  • Underground lagoon designs use geotextile and HDPE liners to minimize seepage risk.

Time-Saving Convenience

Increased Safety & Security

Cadman’s underground lagoon system targets large-scale volume storage by combining heavy-duty HDPE liners with turnkey excavation and installation services, delivering one of the lowest per-cubic-meter costs for very large manure volumes. Unlike rigid tank solutions from Westeel or Husky, Cadman’s lagoon approach requires more land and regulatory planning but offers substantial savings for farms needing maximum capacity at minimal material cost and with fewer structural constraints.

  • Modular lagoon panels, puzzle-friendly

  • Agitation-ready ports, slurry-dancer

  • Heavy-duty frame, anchor-strong

  • Underground lagoon designs use geotextile and HDPE liners to minimize seepage risk.

  • Custom site preparation and installation services to meet provincial regulatory requirements.

  • Modular lagoon panels, puzzle-friendly

  • Agitation-ready ports, slurry-dancer

  • Heavy-duty frame, anchor-strong

  • Underground lagoon designs use geotextile and HDPE liners to minimize seepage risk.

  • Custom site preparation and installation services to meet provincial regulatory requirements.

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$100,000-500,000 CAD

5
BEST VALUE SOLUTION

Husky Farm Equipment Subsurface Manure Storage Tank

Husky Farm Equipment Subsurface Manure Storage Tank

Husky Farm Equipment provides economical subsurface polyethylene tanks that are corrosion-resistant, quick to install, and well suited to small- and medium-sized farms or retrofit projects where minimizing disruption and upfront spend is critical. While Husky tanks do not match Boerger’s solids-handling sophistication or Penta’s active mixing, they deliver the lowest short-term capital requirement and simple maintenance profile among the listed options, making them attractive for budget-conscious operations or locations with limited installation windows.

3.7
★★★☆☆

  • Compact footprint, space-saving wink

  • Quick-install kit, weekend-ready

  • Compact footprint, space-saving wink

  • Quick-install kit, weekend-ready

Review Summary

74%

"Users find the Husky Farm Equipment Subsurface Manure Storage Tank to be good value with straightforward design, but report shorter warranty periods, more frequent maintenance needs, and lower corrosion resistance than premium rivals."

  • UV-stable polymer, sun-proof shell

  • Cost-effective polyethylene or steel subsurface tanks designed for straightforward installation.

  • UV-stable polymer, sun-proof shell

  • Cost-effective polyethylene or steel subsurface tanks designed for straightforward installation.

Time-Saving Convenience

Increased Safety & Security

Husky Farm Equipment provides economical subsurface polyethylene tanks that are corrosion-resistant, quick to install, and well suited to small- and medium-sized farms or retrofit projects where minimizing disruption and upfront spend is critical. While Husky tanks do not match Boerger’s solids-handling sophistication or Penta’s active mixing, they deliver the lowest short-term capital requirement and simple maintenance profile among the listed options, making them attractive for budget-conscious operations or locations with limited installation windows.

  • Compact footprint, space-saving wink

  • Quick-install kit, weekend-ready

  • UV-stable polymer, sun-proof shell

  • Cost-effective polyethylene or steel subsurface tanks designed for straightforward installation.

  • Compact footprint and standard access fittings suited for budget-conscious installs.

  • Compact footprint, space-saving wink

  • Quick-install kit, weekend-ready

  • UV-stable polymer, sun-proof shell

  • Cost-effective polyethylene or steel subsurface tanks designed for straightforward installation.

  • Compact footprint and standard access fittings suited for budget-conscious installs.

Order Now

$25,000-100,000 CAD

What research and practical studies show about subsurface manure storage

A growing body of research from Canadian universities and government agencies supports the benefits of well-engineered underground manure storage when design and maintenance follow guidelines. Studies and extension reports highlight reductions in surface exposure that lower odor complaints and decrease the risk of runoff during heavy rain events. Properly lined and monitored subterranean systems reduce seepage to groundwater compared with poorly maintained or unlined surface lagoons. Research also emphasizes that temperature buffering in buried pits can alter microbial processes; this requires appropriate ventilation and management to avoid unintended increases in methane or anaerobic byproducts. Overall, peer-reviewed and government-led analyses show that engineered underground systems can improve nutrient retention, support regulatory compliance, and deliver long-term operational savings when paired with best practices for installation, monitoring, and emptying.

Reduced surface exposure lowers odor and community complaints compared with open pits, according to field studies and extension reports.

Engineered liners and leak-detection systems significantly reduce seepage risk; government guidance stresses certified designs and periodic monitoring.

Subsurface temperature buffering can change decomposition rates; ventilation and planned agitation reduce anaerobic pockets that raise greenhouse gas risk.

Cost-benefit analyses show lifecycle savings from reduced hauling, better nutrient retention for crops, and less land required for above-ground lagoons.

Academic and extension research from Canadian institutions (for example university and Agriculture and Agri-Food Canada reports) emphasize the importance of matched design to regional climate, soil type, and regulatory requirements.

Across Canadian conditions, underground manure storage pits are a practical option for farms that need high-capacity, lower-visibility containment that supports nutrient management and regulatory compliance. The five main options profiled here each suit different priorities: Westeel Underground Slurry Storage System for broad, warranty-backed steel storage; Penta TMR Underground Manure Tank for integration with feed and TMR workflows; Boerger Below-Grade Manure Storage Pit for robust pump and solids-handling compatibility; Cadman Power Equipment Underground Lagoon System for engineered lagoon solutions; and Husky Farm Equipment Subsurface Manure Storage Tank for modular, farm-scaled installations. For most mixed and dairy operations seeking a balance of capacity, local support, and proven performance in Canada, the Westeel Underground Slurry Storage System stands out as the best overall choice due to its nationwide presence, engineered components, and service network. I hope you found what you were looking for — you can refine or expand your search using the site search to compare specs, available installers, or provincial funding options.

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  • Solid Manure Bunker Storage
  • Portable Containment Skips

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