Multi-stage filtration + UV disinfection

Sediment/carbon filtration followed by UV to make raw or rain water safe to drink.

Cost

Medium

Upkeep

Seasonal

Skill to build

Intermediate

Lifespan

Filtration housing/media: 10-15 years; UV lamp itself needs replacement roughly annually (8,000-12,000 hours rated life)

Embodied carbon

Medium

Space / material use

Low

Output timing

On-demand/controllable

Skill to repair

Intermediate

Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.

Inputs

• Unheated Water
• AC Electricity

Outputs

• Potable Water

Sources

• Water filtration component lifespan industry sources (CleanWaterStore; SimplePure RO guide; ESP Water Products UV guide)

What this page does not tell you

No sizing or quantities: how much a technique yields, and how much a household needs, both depend on the build and the people, so the catalogue compares options rather than dimensioning them. It carries no bill of materials and no build sequence, and it is written for an oceanic, clay-soil climate (Normandy, France). Regulatory notes are indicative and need confirming locally.