Rainwater Harvesting Basics
Understand the complete path from roof to storage, safe overflow and intended end use.
Understand the complete path from roof to storage, safe overflow and intended end use.
Compare small, simple storage with larger integrated systems.
Estimate how roof area, rainfall and collection losses affect usable volume.
Use local records and seasonal patterns instead of relying on a generic annual total.
Understand whether collection pipes drain after rain or remain charged with water.
Compare simple gravity flow with pumps, pressure controls and electrical requirements.
Assess roofing, coatings, flashing and nearby contamination before collecting runoff.
Plan conveyance capacity, slope, access and safe bypass paths.
Stop coarse debris before it reaches filters, pipes and storage.
Understand what first-flush devices can and cannot remove.
Match filtration to debris load, flow rate and maintenance access.
Plan support, sunlight protection, access, freezing and appearance.
Understand excavation, buoyancy, access, structure and long-term serviceability.
Compare plastic, concrete, steel and other tank options with the site conditions.
Design for the full tank condition before choosing storage capacity.
Keep storage able to breathe while excluding pests and preventing accidental entry.
Plan for frost, ice, snow load and seasonal shutdown.
Reduce light, excessive heat and long stagnation in storage.
Match pump type, pressure, flow, lift and controls to the system.
Coordinate pressure tanks, switches, pipe size, fittings and outlet identification.
Prevent harvested water from entering potable plumbing.
Make the system understandable to occupants, visitors and future workers.
Plan water demand, soil infiltration and plant suitability.
Balance roof yield, irrigation demand, nutrient management and plant-health risks.
Understand indoor non-potable plumbing, treatment and backup requirements.
Assess water quality, appliance requirements and plumbing controls.
Plan filtration, runoff control and surface compatibility.
Coordinate demand, operations, codes, insurance and maintenance responsibility.
Understand microbial, chemical and physical contamination pathways.
Recognize the higher health, treatment, testing and regulatory threshold for potable use.
Understand treatment roles without treating a device list as a complete design.
Plan sampling, laboratory testing and operational checks for the intended use.
Identify contamination from animals, trees, vents, chimneys and nearby activities.
Respond cautiously after wildfire smoke, ash fall or fire-suppression contamination.
Turn maintenance into a documented routine rather than an occasional reaction.
Test whether supply and demand align through dry periods.
Understand why water supply storage is not automatically flood storage.
Use landscape infiltration as part of a safe, approved overflow strategy.
Adapt storage and maintenance to cold, hot, humid, arid and coastal conditions.
Coordinate roof drainage, structure, plumbing and controls before walls and landscaping close.
Work around limited space, existing drainage and unknown construction.
Identify which authorities and technical rules apply before construction.
Prevent overflow, erosion and nuisance across property boundaries.
Address ownership, approvals, maintenance and liability before installing equipment.
Evaluate competence across drainage, plumbing, pumps, treatment and local approvals.
Use a structured interview before comparing proposals.
Avoid oversizing, unsafe connections and overlooked overflow.
Move from idea to documented, maintainable installation.
Build a complete budget from catchment to commissioning.
Estimate the full price of a small outdoor collection setup.
Understand why integrated systems cost more than the tank alone.
Budget labour, filters, testing, electricity and component replacement.
Use symptoms to isolate supply, storage, overflow and distribution problems safely.
Reduce water demand and material impact while protecting buildings and waterways.