Mauchline WwTW-Treated 1.5dwf Ssso

Storm overflow run by Scottish Water, discharging into River Ayr.

SSSO
Right now
Not discharging
Last discharge ended 20:45 on 29 Sep 2026 (17 hours ago).
Times are UK time · company feed updated 10 min ago

"Not discharging" means the company's monitor reports no discharge right now — not that the water is clean. The feed publishes status only; no discharge volume is measured.

2026 so far
7overflow events
56 h discharging on 7 days · live feed since 28 Feb, not yet official
2025 official
617overflow events
2,787 h · +31% on 2024
Rank in Scottish Water
—
No ranking for this overflow.
Monitor in 2025
100% working
Share of the year the monitor reported

Year by year

Scottish Water's overflow data reported to SEPA (number of overflow events; Scottish Water does not use the 12/24-hour count). 2026 is our own running count, the same way, from the live feed since 28 February (when we began keeping every discharge it reports) — so it can only be lower than the full year. The official figure is published next spring.

2021
306 events · 2,716 h
2022
315 events · 2,711 h
2023
385 events · 4,288 hmonitor 100%
2024
472 events · 3,112 hmonitor 100%
2025
617 events · 2,787 hmonitor 100%
2026since 28 Feb
7 events · 56 h

"No data" means the monitor was not working or not required to report that year — not zero. Scottish Water counts each overflow event; England and Wales count 12/24-hour "spills", so these numbers are not directly comparable with English or Welsh overflows.

Other outlets here

Scottish Water runs 2 other overflows within 300 m that also discharge into River Ayr. They share the sewer and the storm, so one outlet's figures are only part of what reaches the water.

0m Mauchline WwTW-Old Storm Tanks 3dwf SssodischargingCSO007489 —no 2025 figure
73m Mauchline WwTW-New Storm Tanks 6dwf SssoCSO007488 —no 2025 figure

This overflow: 617 spills in 2025. Distances are between the published outlet points.

Discharges we have recorded

1,115 discharge periods since 1 Jan 2024. 1,087 of them come from Scottish Water's own event-duration-monitoring records (published by the company, Jan 2024 – Dec 2025); the live feed adds anything after that. The official annual count is the figure to quote.

Show 30 earlier (of 1,115)
Started (UK time)EndedDischarge time
26 Sep 2026, 11:1511:4530 min
26 Sep 2026, 10:1510:3015 min
26 Sep 2026, 06:3006:4515 min
26 Sep 2026, 05:2005:4525 min
25 Sep 2026, 09:1523:3020 h 6 min
25 Sep 2026, 07:3007:4515 min
25 Sep 2026, 02:0006:104 h 16 min
24 Sep 2026, 23:1201:302 h 18 min
24 Sep 2026, 21:3021:4515 min
24 Sep 2026, 10:4511:0015 min
24 Sep 2026, 07:2007:3010 min
24 Sep 2026, 04:3005:0030 min
24 Sep 2026, 02:1502:4530 min
23 Sep 2026, 22:3022:4212 min
23 Sep 2026, 19:1519:3015 min
23 Sep 2026, 18:0018:056 min
23 Sep 2026, 17:0017:1011 min
23 Sep 2026, 16:0216:2119 min
31 Dec 2025, 19:1522:303 h 15 min
31 Dec 2025, 18:3018:5526 min
31 Dec 2025, 16:5517:4549 min
31 Dec 2025, 15:4516:1530 min
31 Dec 2025, 11:1511:4530 min
31 Dec 2025, 00:5501:1823 min
30 Dec 2025, 11:2812:2759 min
29 Dec 2025, 12:5413:4551 min
29 Dec 2025, 12:0012:3030 min
29 Dec 2025, 09:4510:1530 min
28 Dec 2025, 23:0023:4545 min
28 Dec 2025, 19:3020:0030 min

The year figures above use the EA's 12/24-hour counting method, so they are comparable with the official figures; the monitor log's 1,129 raw blocks were merged into 1,115 continuous discharge periods (gaps under 15 min joined).

Rain nearby last 30 days

Nearest live rain gauge: Blackdyke Farm, 5.2 km away. Brown shading = when this overflow was discharging; ▼ = a discharge start.

Overflow shading is a timing match, not proof of cause — heavy rain and spills share a trigger. Times come from the water company’s event-duration monitor (site status only; no discharge volume is published).

Where it is

Nearest river gauge
Catrine (Ayr) · 3.4 km
Nearest rain gauge
Blackdyke Farm · 5.2 km
Site reference
CSO007490
Coordinates
55.49885, -4.38948

Concerned about this overflow?

Report pollution you can see or smell to the regulator straight away; the company handles complaints about the overflow itself.

Live status: © Scottish Water, near-real-time Overflow Map data, open licence for reuse. EDM monitors indicate overflows; they do not confirm them, and this is not advice on water quality. Spill-event history and annual figures: Scottish Water overflow event data, Open Government Licence. Times are shown in UK local time. FloodRadar republishes the monitor's status; it does not measure discharges itself.