Catchment area
RHELGAN Water Systems
RHELGAN · RAINWATER
Rainwater Harvesting Systems
Roof-catchment water systems combining debris control, first flush, storage, treatment and distribution for housing, schools, clinics and community facilities.
01ROOF CATCHMENT
02SCREENING
03FIRST FLUSH
04STORAGE
05TREATMENT
06DISTRIBUTION
Where it fits
Applications that benefit from this pathway.
Remote housingSchools and campusesClinics and health facilitiesCommunity buildingsIsland developmentsSupplementary water supply
Selection factors
Define these before equipment is fixed.
Roof material
Rainfall pattern
Dry-season length
Daily demand
Intended water use
Overflow route
Top-up source
Tank footprint
Specification controls
Keep the public pathway useful without turning planning data into guarantees.
Storage is sized from catchment, rainfall and demand rather than tank preference.
Potable use requires appropriate source control, treatment and project water-quality management.
Overflow and stormwater interfaces are part of the design.
Cross-connection with other water supplies must be controlled.
Working resources
Carry this section through design, procurement and handover.
Source-Water Review
Structure source, testing, seasonal reliability and treatment questions before equipment is selected.
Open reviewDemand & Storage Planner
Turn demand and storage autonomy into a transparent planning range.
Open plannerSpecification Template
Use one controlled schedule for storage, treatment, pumping, controls and project interfaces.
Open templateResponsibility Matrix
Separate supplied equipment from civil works, pipework, power, approvals and operations.
Open matrixInstallation & Commissioning
Plan site readiness, assembly, cleaning, testing and water-quality verification.
Open commissioningOperations & Maintenance
Define routine checks, consumables, spares, alarms and operator ownership.
Open O&MProject note
A larger tank does not automatically produce more usable water. Rainfall distribution, roof area, demand and acceptable shortage risk determine the useful storage volume.
Final equipment, material, capacity, certification, drawings, performance and commercial scope are confirmed against the exact project configuration.
RHELGAN · WATER STORAGE & SUPPLY SYSTEMS