A year of water, folded into one sheet.

Annual report 202612 folds

The Corran Valley Water Co-op's report to the 4,812 households that own it. Scroll to pull the thread: each fold opens one number, and before the last one you draw the chart yourself.

Corran Valley, filed 30 September 2026

Scroll to pull the thread

4,812 households own the pipes.

Fold 03, members+214 this year

Every house on the network holds one share and one vote. This year 214 more joined, mostly from the new terraces above the mill, and the AGM in March reached quorum before the tea ran out.

4,812member households
214joined this year
1vote each

312 leaks, found by listening.

Fold 07, leaks46 loggers

Acoustic loggers clipped to the valves hear a burst main as a steady hiss at night, when nobody is running a tap. A crew is on site within 9 days on average, down from 23 in 2023.

312leaks fixed
9 dto repair, average
46loggers on valves

Some of what we pump never reaches a tap.

Fold 10, water lost2019 to 2026

In 2019 it was 31 litres in every 100. You have the first 3 years. Before the report shows the rest, draw where you think the line went.

Draw your guess

Draw the line before we do.

Fold 11, your turn

Drag across the shaded years to draw how much water you think the network lost from 2022 to 2026, or set each year with the sliders. Then reveal the real line and see how far off you were.

Water lost to leaks, % of what was pumped0 of 5 drawn
40%20%0%
Draw all 5 years to reveal.

Fold 12. The sheet lies flat.Every figure on it was read from a meter, a logger or an invoice. How each was counted is below.

How the numbers were counted.

Methodology

Water lost is what left the treatment works minus what member meters recorded, over the same 12 months. Nothing is estimated where a reading exists.

Meters
4,812 household meters and 38 district meters, read every month. Missed reads are filled from the same month last year and marked in the appendix.
Leaks
A leak counts once it is dug up and repaired. Logger alerts that found nothing are listed separately: 41 this year.
Audit
Accounts and the water balance were checked by Harl & Mercer, Corran Bridge. Their letter is page 2 of the printed copy.

One sheet, posted to every member.

The printed copyA2, folded

The report goes out on a single A2 sheet, folded 12 times, with a red thread to open it. Not a member yet? Ask for one anyway.

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