Install a rooftop rainwater catchment cistern at a Hilo home

With gutters clear, this Hilo home can now put its heavy rainfall to use instead of losing it all to the storm drain. A rooftop catchment cistern stores that water for garden and household use, the intermediate rung in Hilo's rain-catchment chain. Standard: SDG 6, Clean Water and Sanitation, rooftop rainwater catchment Proof: Photo shows installed cistern catching flow with a working overflow Method (SDG 6, Clean Water and Sanitation, rooftop rainwater catchment): 1. Confirm the roof catchment area and downspout routing 2. Set the cistern on a level, stable base 3. Connect the downspout to the cistern inlet with a first-flush diverter 4. Fit an overflow outlet directed away from the foundation 5. Test the system by running water through the downspout into the cistern Done when: Photo shows installed cistern catching flow with a working overflow

Where

Kamehameha Ave, Hilo, HI

Pay

$500 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 shows installed cistern catching flow with a working overflow

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

Level

intermediate

Open until

2026-09-03

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.