Start with the system requirement
Water and sanitation equipment is highly dependent on the system around it. Before shopping, identify the problem the equipment is expected to solve and where it fits in the complete system.
For water, that may mean supplying, storing, pumping, filtering, treating, or distributing water. For sanitation, it may mean handling toilet waste, wastewater, or both. The existing Water systems research and Sanitation systems research provide a starting point for understanding those broader decisions.
Research water equipment
Water equipment can include tanks, pumps, pressure controls, filters, treatment equipment, and related plumbing components. The right product depends on the source, water quality, expected demand, pressure and flow requirements, and intended use.
Tanks and storage
Compare usable capacity, dimensions, connections, access, installation requirements, environmental limits, and maintenance needs. Consider how the storage volume fits the expected supply and demand rather than choosing a tank solely by its advertised capacity.
Pumps and pressure equipment
Research flow, pressure, head, electrical requirements, controls, cycling behavior, noise, and operating conditions. A pump's maximum flow number does not describe how it will perform in the actual system.
Filters and treatment
Choose treatment equipment around the actual water-quality problem and intended use. Compare rated flow, pressure loss, treatment claims, replacement intervals, consumables, maintenance, and any testing or certification information that is relevant to the application.
The Water Storage Planner and Rainwater Collection Planner can support early planning, but their outputs are not product specifications or final engineering requirements.
Research sanitation equipment
Sanitation products should be evaluated as part of the complete waste and wastewater pathway. A toilet, treatment device, tank, pump, or other component may address only one part of that pathway.
Toilets
Depending on the system, compare water use, electrical or fuel requirements, capacity, ventilation, waste handling, cleaning, maintenance, and disposal or treatment requirements. Product availability does not establish that a particular toilet approach is permitted at a specific property.
Septic and wastewater components
Where septic or other wastewater systems are under consideration, equipment choices depend on site conditions, system design, capacity, treatment approach, and applicable requirements. Compare components only after the overall system has been evaluated through the appropriate site and design process.
Alternative sanitation systems
Waterless, composting, incinerating, and other specialized systems can have very different operating requirements. Research the complete handling process, including liquids, solids, ventilation, energy or fuel, consumables, servicing, and final disposal.
Compare capacity and performance
Capacity and performance specifications need to be interpreted in the context of the system. For a tank, capacity may be the key constraint; for a pump, performance changes with system pressure and head; for a filter, rated flow and pressure loss can matter; for a sanitation product, user capacity and waste-handling limits may be more important.
Look for the test conditions and assumptions behind manufacturer specifications. Compare the values that correspond to your expected operating conditions instead of relying on a single headline number.
Check system compatibility
Water and sanitation equipment often depends on the components around it. Check physical connections, pipe sizes, pressure ranges, electrical requirements, controls, approved accessories, and any limits on system configuration.
- Does the equipment match the source pressure, flow, or storage conditions?
- Are electrical requirements compatible with the available service or power system?
- Are filters, pumps, controls, tanks, or treatment components approved for the intended combination?
- Does the equipment require specific plumbing, ventilation, drainage, or waste connections?
- Are there installation orientations, clearances, or configuration limits?
Do not assume compatibility because two products use the same basic connection size or appear to serve the same purpose.
Check installation and site requirements
Site conditions can determine whether a product is practical or permitted. Research the physical, environmental, and regulatory requirements before purchasing equipment that may be difficult or expensive to return or replace.
- Available space, access, weight, and installation path
- Temperature, freezing, moisture, sunlight, flooding, drainage, and other environmental conditions
- Electrical service for pumps, treatment equipment, controls, or specialized toilets
- Water pressure, flow, piping, drainage, ventilation, and connection requirements
- Wastewater, septic, health, plumbing, environmental, zoning, permitting, and inspection requirements
- Access for pumping, cleaning, filter changes, servicing, or replacement
- Which work requires licensed installation, testing, design, or professional review
Compare ownership factors
Water and sanitation systems can create recurring costs and maintenance obligations. Compare those factors alongside purchase price.
- Warranty term, coverage, exclusions, and service requirements
- Replacement filters, membranes, cartridges, parts, consumables, or other supplies
- Pumping, cleaning, inspection, testing, or routine service requirements
- Energy or fuel consumption where applicable
- Availability of qualified service and replacement components
- Expected equipment life and major replacement costs
- Seasonal operation, winterization, vacancy, and outage considerations
- Total cost of ownership over the expected service period
Water & sanitation comparison checklist
- Define the water or sanitation problem the product needs to solve.
- Identify the source, demand, wastewater pathway, treatment goal, and intended use.
- Establish the relevant capacity, flow, pressure, energy, or waste-handling requirements.
- Compare manufacturer specifications under conditions relevant to the project.
- Verify compatibility with connected plumbing, electrical, treatment, storage, or wastewater components.
- Check installation space, environmental conditions, access, maintenance, and service requirements.
- Confirm applicable water-quality, health, plumbing, septic, wastewater, zoning, permitting, and inspection requirements.
- Compare warranty, consumables, service, replacement parts, operating costs, and expected life.
- Verify current manufacturer documentation and obtain appropriate professional review before installation.