Environment One (E/One)
Environment One (E/One) at Siewert Equipment & F.R. Mahony
Reliable Grinder Pumps and LPS Systems for Challenging Terrain Across Upstate NY and New England
Environment One Corporation (E/One) has led the industry in low pressure sewer (LPS) technology for over 50 years. Headquartered in Niskayuna, New York, E/One’s grinder pump systems are deployed globally in communities that require efficient, cost-effective sewage handling—especially where gravity sewering is impractical. These solutions help reduce capital costs, minimize disruption to landscapes, and enable wastewater system design flexibility.
Siewert Equipment is the Authorized Distributor of Environment One in Upstate NY, and F.R. Mahony proudly serves as the Exclusive E/One Distributor across New England. Both teams are factory-trained and authorized to support you with design, sales, supply, service, installation assistance, startup support, warranty, and certified repairs.
For more information, view our E/One customer testimonials and case studies here. We have E/One Authorized Service Centers in Rochester & Albany NY, and Oxford, MA.
Environment One products are used in residential and municipal sewage systems. Communities around the world have used E/One products – whether they are replacing septic tanks, upgrading existing pressure sewer systems, or as an alternative to gravity sewer systems. E/One products offer a cost-effective and reliable solution.
E/One Sewer Systems Distributors for Upstate New York and New England.
Residential low pressure sewer system in the Finger Lakes.
E/One sewage grinder pump install.
E/One sewer systems waiting for install and startup.
E/One inventory in Siewert Equipment Albany warehouse.
Siewert Equipment service technician performing E/One startup at residential location.
Residential low pressure sewer system in Port Bay NY.
E/One Sentry Protect alarm control panel testing.
We have E/One Authorized Service Centers in Rochester & Albany NY.
Environment One grinder pump station install in Portland, ME by FR Mahony.
Environment One install in Portsmouth, NH by FR Mahony.
Technical Product Overview
Environment One (E/One) designs and manufactures advanced semi-positive displacement grinder pumps engineered specifically for Low Pressure Sewer (LPS) applications. These pumps are purpose-built to deliver high performance in both residential and commercial wastewater systems, especially where traditional gravity infrastructure is infeasible or cost-prohibitive.
Semi-Positive Displacement Pump Design
At the core of E/One’s technology is the semi-positive displacement principle. Unlike centrifugal pumps, which lose efficiency as head conditions change, semi-positive displacement pumps maintain consistent flow rates across a wide range of pressures—making them ideal for the variable terrain and long pipe runs common in LPS systems.
Each E/One grinder pump station includes:
- Precision-Machined Cutter Assembly – A hardened stainless steel radial cutter wheel and stationary ring shred incoming solids into fine slurry (typically ≤ 3/16″), preventing clogs and enabling smooth flow through small-diameter force mains.
- High-Torque, High-RPM Motor – The pump motor delivers consistent torque even under load, ensuring reliable grinding and pumping in high head and peak demand conditions. Typical motors are 1 to 1.5 HP, 240V single-phase.
- Stator & Rotor Assembly – Constructed from corrosion-resistant materials, the rotor/stator combination delivers consistent volumetric flow (approx. 11 gpm at 0 psig, 9 gpm at 80 psig), unaffected by changes in elevation or pressure.
- Pressure-Sensitive Operation – Pumps are automatically activated by wastewater level and pressure sensors within the station. A built-in pressure switch ensures the system only runs when needed, reducing wear and energy usage.
- Control Panels & Monitoring – Systems are available with Simplex, Duplex, and Quadrex panel options, incorporating alarms, pump sequencing, overload protection, and dry-run prevention. Optional E/One Sentry Advisor™ remote monitoring enables continuous pump station visibility, asset tracking, and fault detection.
- Fiberglass or HDPE Wetwell Tanks – Rugged, watertight basins available in multiple sizes and configurations (single dwelling, duplex, large commercial) with integral check valves, anti-siphon devices, and quick-disconnect cores for fast servicing.
Built for Challenging Environments
E/One grinder pump systems are engineered to withstand harsh site conditions and intermittent usage common to:
- Remote or seasonal residences
- Lakefront and coastal developments
- Mountain or bedrock terrain
- Areas with high groundwater or flood risk
- Septic-to-sewer conversions
- Urban infill or replacement sewer projects
Their compact footprint, sealed design, and quiet operation make them especially well-suited to residential neighborhoods and environmentally sensitive areas.
Performance & Longevity
- Motor Duty Cycle:
Intermittent (up to 30 minutes continuous), thermally protected - Expected Service Life:
20–30 years with minimal preventive maintenance - UL- and CSA-listed
Panels and pump assemblies are third-party tested and certified - Typical Operating Range:
- Flow: 8–12 gpm
- Head: Up to 185 feet TDH
- Solids Handling: Up to 3″ solids via shredding
*Have technical questions about your grinder pump or LPS design?*
Call (800) 333-0598 – NY or (508) 765-0051 – New England to speak directly with an E/One-certified engineer at Siewert Equipment or F.R. Mahony. We’re here to help you specify the right system for your site.
Builders Brochure – Siewert and EOne
Applications & Industries Served
- Residential sewer systems
- Commercial developments
- Small municipalities and rural communities
- Septic-to-sewer conversions
- Gravity sewer system retrofits
- Grinder pump replacements
- High water table and rocky terrain installations
- Mountain, lakefront, or coastal sites
Why Buy Environment One Through Siewert Equipment or F.R. Mahony?
- Authorized and exclusive E/One distributor in Upstate NY and New England
- Local inventory of pumps and replacement parts
- Certified service technicians available in Upstate NY and New England
- Authorized repair centers in Rochester & Albany, NY and Oxford, MA
- Factory and authorized training and support
- Decades of experience in low pressure sewer system design
- Fast response times and in-depth system knowledge
- Proven track record with thousands of installations across the region
Environment One Grinder Pump & LPS System Offerings
Grinder Pumps
Residential and commercial semi-positive displacement models for low pressure sewer systems
- Designed for long service life and minimal maintenance
- Available in a variety of tank sizes, inlet depths, and discharge heights
- Capable of handling high heads and challenging elevations
- Proven performance in both single-home and community-wide applications
Low Pressure Sewer (LPS) Systems
Complete engineered solutions to replace or supplement gravity sewer systems
- Ideal for areas with high water tables, rock, or poor soil conditions
- Uses small-diameter piping and fewer lift stations for cost-effective installation
- Easily scales from single lot to full community developments
- Enables sewering of properties previously considered unserviceable
Upgrade Pumps
Direct replacements for failed centrifugal grinder pumps in existing systems
- Drop-in design fits into existing wet wells without modification
- Restores performance without costly excavation or retrofitting
- Compatible with many third-party tank designs
- Includes all necessary hardware and electrical connections for quick change-out
Alarm Panels & Remote Monitoring
Smart control and notification systems for grinder pump operation
- Simplex, duplex, and quadrex control options
- Visual and audible alarms for pump or power failure
- E/One Sentry Advisor system enables real-time monitoring and diagnostics
- Helps reduce service calls and streamline maintenance planning
OEM Replacement Parts
Factory-authorized spare parts for ongoing reliability and system longevity
- Cores, rotors, and stators built to original equipment specifications
- Impeller assemblies and cutter wheels to maintain peak grinding performance
- Pressure switches, supply cables, and electrical components
- All parts backed by manufacturer warranty and technical support
Prefabricated Grinder Pump Stations
Fully assembled and tested systems for rapid deployment
- Reduces time on site and speeds up project timelines
- Includes pumps, tanks, controls, and piping in a ready-to-install package
- Customizable for site-specific requirements
- Built for durability in extreme weather and soil conditions
System Design & Engineering Support
Assistance from specification through startup
- Customized LPS layouts and pump sizing based on site needs
- In-house CAD capabilities for drawings and submittals
- Installation training, O&M documentation, and startup assistance
- Collaborative support for engineers, municipalities, and developers
Certified Service & Repair
Expert field and in-shop support by E/One-certified technicians
Understanding Low Pressure Sewer (LPS) vs. Traditional Gravity Sewer Systems
Conventional gravity sewer systems rely on continuous downhill pipe slopes and large-diameter mains to transport wastewater. This requires extensive excavation, precise grading, and costly lift stations when the terrain doesn’t cooperate. In contrast, Low Pressure Sewer (LPS) systems use a distributed network of semi-positive displacement grinder pumps—like those from Environment One (E/One)—to move wastewater under pressure through small-diameter force mains.
Key Differences and Advantages of LPS Systems:
- Smaller Diameter Pipework
LPS systems use flexible, corrosion-resistant piping typically ranging from 1¼” to 4″ in diameter, significantly reducing material and installation costs compared to 8″–24″ gravity mains. - Shallow Trench Installation
Unlike gravity systems that require deep excavation to maintain slope, LPS pipes follow the contour of the land. This minimizes trench depth, reducing excavation, dewatering, and backfill requirements. - Grinder Pumps at Each Connection
E/One’s semi-positive displacement grinder pumps macerate solids and generate enough pressure to pump wastewater long distances and over varied elevations—without the need for lift stations. - Fewer Manholes and Lift Stations
Gravity sewer systems often require frequent manholes, cleanouts, and intermediate pump stations. LPS systems eliminate or drastically reduce these components, lowering capital and long-term O&M costs. - Environmentally Friendly Design
Reduced excavation and equipment use means less disruption to landscapes, fewer emissions during construction, and better preservation of trees, roadways, and other existing infrastructure. - Scalable & Modular
Systems can be installed in phases, allowing developers or municipalities to expand service as demand grows—without overcommitting capital upfront. - All-Terrain Flexibility
LPS is ideal for:- Rocky or hilly terrain
- High water table or flood-prone areas
- Seasonal, remote, or waterfront communities
- Infill or retrofit projects where gravity sewering is impractical or cost-prohibitive
The E/One Advantage in LPS Sewer Design
Environment One pioneered LPS technology over 50 years ago, and continues to lead the market with reliable, efficient, and easy-to-maintain grinder pumps. Whether you’re upgrading a septic community, retrofitting a gravity system, or designing new infrastructure, E/One systems offer unmatched flexibility and cost control.
When paired with experienced, factory-trained support from Siewert Equipment (NY) and F.R. Mahony (New England), an LPS system becomes more than just a solution—it becomes a long-term asset.
Full-Service Support from Siewert Equipment & F.R. Mahony
- On-hand stock of pumps and parts
- OEM-certified grinder pump repair centers
- Local authorized and factory -certified technicians in NY and New England
- System design consultation and field support
- Remote alarm & monitoring integration
- On-site training and startup assistance
- Retrofit guidance for existing systems
Frequently Asked Questions (FAQ)
Q: What is a low pressure sewer (LPS) system and how does it work?
A: An LPS system uses small-diameter pipes and grinder pumps to move wastewater under pressure—unlike gravity sewers that rely on slope. Each E/One pump station grinds and pumps wastewater to treatment facilities, even across uneven terrain.
Q: Can Environment One (E/One) grinder pumps be used in rural or difficult-to-sewer locations?
A: Yes — E/One grinder pumps are ideal for rural areas, lakefront properties, rocky soil, and locations where gravity sewers are too costly or impossible to install.
Q: Can I retrofit my septic system with an E/One grinder pump?
A: Absolutely. E/One systems are a proven solution for septic-to-sewer conversions and gravity sewer retrofits, minimizing disruption to existing properties.
Q: Are E/One grinder pumps noisy during operation?
A: No — E/One grinder pumps are engineered for quiet performance. Their semi-positive displacement design operates efficiently and discreetly in residential and commercial environments.
Q: What kind of maintenance do E/One pumps require?
A: E/One systems are designed to be low-maintenance. Routine service is typically not required, but if needed, service can be performed by our certified technicians in NY and New England.
Q: How long do Environment One grinder pumps last?
A: With proper installation and usage, E/One pumps often last 20–30+ years. Their durable design includes corrosion-resistant materials and high-performance components.
Q: What happens if my E/One grinder pump alarms or fails?
A: If an alarm occurs, it typically indicates a temporary issue (e.g., power outage, blockage). Call your local E/One-certified service center—Siewert Equipment or F.R. Mahony—for prompt assistance.
Q: Do you carry replacement parts for E/One systems?
A: Yes — we stock OEM parts including cores, rotors, stators, cutter wheels, impeller assemblies, and control components for fast repair or rebuilds.
Q: Can I monitor my pump system remotely?
A: Yes — E/One’s Sentry Advisor™ allows remote monitoring of pump station performance, alarms, and diagnostics, reducing risk and improving system oversight.
Q: Who do I contact for help with LPS system design or installation?
A: Contact Siewert Equipment (Upstate NY) or F.R. Mahony (New England) for expert design, supply, startup support, and maintenance of your E/One low pressure sewer system.
Serving Your Community in NY and New England
From the Adirondacks to Cape Cod, we provide sales, service, and system support for residential developments, municipalities, and commercial sites. Whether you’re upgrading from septic or expanding infrastructure, Siewert Equipment and F.R. Mahony ensure your Environment One system is designed to last.
- New York (serving all Upstate NY) through Siewert Equipment, with offices in Rochester, and Albany.
- New England (serving all New England) through F.R. Mahony, with offices in Rockland, and Oxford.
Sewer Anywhere. Upgrade Today.
Let us help you design, supply, or service your Environment One grinder pump system.
Grinder Pump Repair
We provide unmatched service to E/One customers. With authorized service centers in Oxford, MA, and Albany and Rochester, NY, our OEM certified technicians are able to diagnose problems, repair pumps, and replace parts for all E/One grinder pumps.
Learn More About E/One
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