Run a monthly filter-maintenance round across five invited Flint homes (2026-07-18)

One-off filter help fades; what Flint's north side needs is a steady maintainer who keeps a small roster of households on a working cartridge schedule month after month. This packet turns single swaps into a dependable route. Standard: NSF/ANSI-53 cartridge replacement schedule per manufacturer; SDG 6 Clean Water and Sanitation. Proof: Route log plus a dated cartridge photo at every stop Method (NSF/ANSI-53 cartridge replacement schedule per manufacturer; SDG 6 Clean Water and Sanitation.): 1. Build a route of five host-invited homes that have asked for standing filter maintenance. 2. At each home, check the cartridge date, swap any cartridge at or past its interval, and run the flush. 3. Write the new date on every cartridge you install. 4. Keep a simple route log with each stop's block, filter model, and swap decision. 5. Photograph each dated cartridge in place and record the route log with GPS and date on. Done when: Route log plus a dated cartridge photo at every stop

Where

Five host-invited homes, Martin Luther King Avenue corridor, north side, Flint, MI 48505

Pay

$75 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. You see which before you claim, never after.

Proof

Route log plus a dated cartridge photo at every stop

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

Level

intermediate

Open until

2026-08-17

How this work is done

A documented method, so this packet comes out the same whoever does it. Typically 30–60 minutes. Method of record: EPA drinking-water sampling (3Ts / LCR first-draw where lead is in scope)

Bring

• GPS-capable phone
• test kit for each named analyte (nitrate/coliform/arsenic/lead as specified)
• clean sample bottle + label
• nitrile gloves
• camera

Steps

1. 1. Navigate to the sampling point; confirm GPS is inside the posting radius; record the waypoint.
2. 2. Photograph the tap or wellhead with a legible timestamp.
3. 3. If first-draw is required, sample after >=6h stagnation; if flushed, run the tap 2-3 minutes first, then sample.
4. 4. Fill the bottle without touching the inside; cap immediately.
5. 5. Run each test per kit instructions; wait the exact develop/incubation time; read and record every value with units.
6. 6. Record coliform as present/absent after the stated incubation window.
7. 7. Enter all readings, units, GPS, time, and photos into the proof record; sign it.

If it does not match the plan

• Nitrate > 10 mg/L -> tag 'exceeds EPA MCL'; advise no infant consumption pending certified-lab confirmation.
• Total coliform present -> advise disinfection + retest; recommend lab confirmation.
• Arsenic > 10 ppb or Lead > 15 ppb -> tag exceedance; recommend certified-lab confirmation before any consumption guidance.

What counts as done

• GPS waypoint recorded inside the posting radius
• Timestamped photo of the exact sampling point
• Each required analyte recorded with a numeric value + units (or present/absent)
• Sampling type (first-draw vs flushed) explicitly noted

Proof is measured against these, not judged by taste.