Emergency & Disaster Water Supply
Rapid water supply deployment for disaster response, humanitarian operations, and emergency situations.
Water Needs in Emergencies
After a disaster, safe water is the first life-saving priority. Contaminated water causes cholera, typhoid, and dysentery — leading causes of post-disaster mortality.
| Phase | Timeline | Water Need | Priority |
|---|---|---|---|
| Immediate (0-72 hrs) | 0-3 days | 7.5 L/person/day minimum | Survival hydration |
| Short-term (3-30 days) | 1-4 weeks | 15-20 L/person/day | Sanitation + cooking |
| Recovery (1-6 months) | 1-6 months | 20-50 L/person/day | Return to normal |
| Reconstruction (6+ months) | 6+ months | 50+ L/person/day | Permanent systems |
Rapid Water Supply Options
Water Trucking
- Capacity: 5,000-20,000 liters per truck — serves 500-2,000 people/day
- Cost: $0.02-0.10 per liter delivered — highest per-unit cost
- Setup time: 24-48 hours from contract to delivery
- Limitations: Road access required, fuel dependency, ongoing cost
- Best for: Immediate response (first 1-2 weeks), remote areas
Bottled Water Distribution
- Supply chain: Requires regional bottling plant within 200-500 km
- Distribution: Palletized delivery to distribution points
- Cost: $0.10-0.50 per liter — expensive but universally accepted
- Limitations: Plastic waste, storage requirements, logistics intensive
- Best for: First 48 hours, areas with contaminated source water
Emergency Drilling
- Rapid drilling rigs: Truck-mounted, 5-10 m/hour in soft formations
- Timeline: 1-3 days for well completion (shallow wells)
- Depth: Typically 10-50 m — targeting shallow aquifers
- Cost: $3,000-15,000 per well — cheapest long-term option
- Best for: Short-term to permanent supply where aquifer exists
Drive-Point / Sand-Point Wells
- Method: Drive steel point with screen into shallow aquifer — manual or jackhammer
- Depth: Up to 10-15 m — limited by driving resistance
- Yield: 0.5-5 L/s — sufficient for 100-500 people
- Setup time: 2-8 hours — fastest drilling option
- Cost: $200-1,000 — extremely low cost
| Method | Setup Time | Cost | Capacity | Lifespan |
|---|---|---|---|---|
| Water trucking | 24-48 hrs | High ongoing | 500-2000/day | Weeks |
| Bottled water | 48-72 hrs | Very high | Variable | Days |
| Emergency well | 1-3 days | $3,000-15,000 | 500-5,000/day | Permanent |
| Drive-point | 2-8 hrs | $200-1,000 | 100-500/day | 1-5 years |
| Bladder tank | 1-4 hrs | $500-3,000 | 1,000-10,000L | Days-weeks |
Emergency Water Treatment
Point-of-Use Treatment
- Boiling: Most reliable — 1 minute rolling boil kills all pathogens
- Chlorination: 2 drops household bleach (5%) per liter — 30 min contact time
- Chlorine tablets: Aquatabs, Katadyn Micropur — pre-dosed, easy to use
- Ceramic filters: Biosand, ceramic pot — remove 90-99% bacteria
- Solar disinfection (SODIS): Clear PET bottles, 6+ hours sun exposure — 99% bacteria kill
Mobile Treatment Units
- Containerized RO: Pre-assembled in 20ft container — 100-1,000 m³/day
- UF membrane units: Ultrafiltration removes bacteria and protozoa — 50-500 m³/day
- Electrochlorination: Salt + electricity → chlorine on-site — no chemical transport
- Rapid sand filtration: Temporary treatment plant — removes turbidity + pathogens
NGO Water Response Protocols
UNICEF WASH Standards
- Minimum standard: 15 L/person/day for domestic use
- Distance to water point: Maximum 500 m from shelter
- Queue time: Maximum 30 minutes per collection
- Water quality: Zero E. coli per 100 mL at point of distribution
- Monitoring: Daily chlorination testing at distribution points
MSF (Doctors Without Borders)
- Priority: Water for medical facilities first, then general population
- Quality: Higher standard for medical use (sterile water for procedures)
- Volume: 20-50 L/person/day in camps with medical facilities
Red Cross/Red Crescent
- First 72 hours: Bottled water + water purification tablets
- Week 1-2: Water trucking + emergency drilling
- Month 1+: Permanent well construction + treatment
Key Emergency Water Statistics
After the 2010 Haiti earthquake, cholera killed 10,000+ people due to contaminated water. After the 2015 Nepal earthquake, rapid well drilling provided permanent water to 50,000 people within 2 weeks. Every $1 invested in emergency water supply saves $4-7 in healthcare costs.
Emergency Supply Chain
- Pre-positioning: Store water kits in strategic locations before disasters occur
- Procurement: Framework agreements with suppliers for rapid delivery
- Logistics: Air freight for immediate needs, sea/road for bulk supply
- Distribution: Community water points with queue management
- Monitoring: Daily water quality testing, usage tracking, feedback collection
- Transition: Handover to local authorities when emergency phase ends