Question 1

How accurate is RainCatchNomad's water calculator?

Accepted Answer

RainCatchNomad uses standard rainwater harvesting formulas and average per-capita water consumption data. Results are accurate within 15–25% for most situations.

Question 2

How much water does a person use per day off-grid?

Accepted Answer

Standard: 100–150 L/day. With off-grid optimizations (eco shower, composting toilet, greywater reuse): 30–60 L/day.

Question 3

What is roof collection efficiency?

Accepted Answer

Typical collection efficiency is 80–92%. Losses come from evaporation, splashing and first-flush diverters. RainCatchNomad defaults to 85%.

Question 4

What is an atmospheric water generator?

Accepted Answer

An AWG extracts moisture from air using cooling coils. At 80% humidity and 30°C, a mid-range AWG produces 20–30 L/day using 0.3–0.5 kWh per litre.

Question 5

How long should a water tank last for drought resilience?

Accepted Answer

Central Europe: 30–60 days. Mediterranean/islands: 90–120 days. Arid regions: 150–300 days. RainCatchNomad covers 30–300 days.

Question 6

How do I calculate rainwater harvesting potential?

Accepted Answer

Formula: Roof Area (m²) × Annual Rainfall (m) × Collection Efficiency (%). Example: 150 m² × 0.8 m × 0.85 = 102 m³ = 102,000 litres per year.

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