Swap the filter cartridge on a household water system every month.

Households in Iztapalapa that already run a basic water filter often keep using it long after the cartridge is spent, because a clogged filter still looks fine from the outside. A missed swap quietly lets sediment and microbes from trucked or tank-stored water back into drinking water. A simple monthly cartridge check and swap keeps the filter actually doing its job.

Where

Invited home kitchen, Barrio San Lucas, Iztapalapa, CDMX 09090 · Open the map

Pay

$140 proposed

This packet is not funded yet, so this figure is a proposed price and not money waiting in escrow. If a buyer funds it, approved proof settles that price onchain. If nobody funds it, approved proof earns provable credit toward the work instead of cash — recorded, and readable any time at vealth.net/labor/credit/(your wallet). You see which before you claim, never after.

Proof

Photo of the new cartridge installed plus swap date

This is exactly what gets it approved. Nothing settles without it.

Level

entry

Open until

2026-09-19

Posted by

0x034F…6c89

The creator wallet. Its signature is what approves proof and settles the wage.

How this work is done

A documented method, so this packet comes out the same whoever does it.

Steps

1. Confirm the host invites the visit and locate the household filter unit.
2. Check the cartridge age or condition against the manufacturer's replacement window.
3. Remove the spent cartridge and install a new one, following the unit's seal instructions.
4. Run water through the new cartridge for the recommended flush time before use.
5. Photograph the new cartridge in place and record the swap date for the next visit.

What counts as done

• Photo of the new cartridge seated in the housing
• Photo of the spent cartridge for confirmation
• Host-confirmed swap date

Proof is measured against these, not judged by taste.

The standard this serves

Drinking Water Safety. Drinking water safety rests on hard numbers: the EPA and the World Health Organization publish exact limits for lead, bacteria, nitrates, and the rest, the line between water that is safe and water that only looks safe. Clear water can fail the test; slightly cloudy water can pass it. Only the test knows. Mastery means clean sampling habits, honest custody of every sample, and readings a stranger can trust. This packet is one correct sample or one careful reading, taken by the book. Every safe glass of water stands on somebody having done this properly.