Swap the filter cartridge at a Gonzales home on a quarterly round (2026-07-19)

A nitrate-rated filter cartridge loses its capacity over time, and a household that can't afford to guess wrong needs a scheduled swap to keep drinking water genuinely safe. A quarterly round keeps the filter doing its job. Standard: NSF/ANSI 58 nitrate-reduction filter-maintenance standard; California SAFER program — SDG 6. Proof: Photo of the new cartridge installed with the swap date Method (NSF/ANSI 58 nitrate-reduction filter-maintenance standard; California SAFER program — SDG 6.): 1. Check the cartridge change indicator or install date. 2. Shut off supply and remove the old cartridge. 3. Install the new certified cartridge and restore supply. 4. Run water through and check for leaks. 5. Photograph the new cartridge and date it in the record. Done when: Photo of the new cartridge installed with the swap date

Where

Invited home near 4th St & Alta St, Gonzales, CA 93926

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. You see which before you claim, never after.

Proof

Photo of the new cartridge installed with the swap date

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

Level

entry

Open until

2026-10-19

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.