VERT / GREEN
Known yield/recovery and compatible demand: monitor trends and maintain pump/tank.
Well yield, recovery and storage
Diagnose insufficient water quantity by separating well yield, pump performance, drawdown, recovery and peak demand—independently from water quality.
JAUNE / YELLOW
Low pressure or intermittent shortage: distinguish pump/pressure-tank problems from true low yield.
ROUGE / RED
Well running dry, declining yield or major new demand: test yield/recovery before upsizing the pump.
Project triage
What the professional checks
- Measure flow, static level, drawdown and recovery
- Size pump/storage to sustainable yield and demand
Official sources
Sources checked: 2026-08-22. Always confirm local rules and the applicable edition.
Tools related to this issue
V16
Advanced diagnostics to cross-check
V16 connects water, soil, climate, safety, materials and seasonal use to existing projects.