Helensburgh WwTW - Post-Pst Ssso
Storm overflow run by Scottish Water, discharging into Clyde Estuary.
"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.
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.
"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.
Discharges we have recorded
3,447 discharge periods since 1 Jan 2024, 1 still open. 3,413 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.
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Wed 30 Sep 2026, 02:21ongoing
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Wed 30 Sep 2026, 01:2832 min
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Wed 30 Sep 2026, 00:4423 min
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Tue 29 Sep 2026, 23:5929 min
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Tue 29 Sep 2026, 18:404 h 47 min
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Tue 29 Sep 2026, 17:4715 min
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Tue 29 Sep 2026, 15:171 h 58 min
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Tue 29 Sep 2026, 10:234 h 16 min
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Tue 29 Sep 2026, 08:2638 min
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Tue 29 Sep 2026, 07:325 min
Show 30 earlier (of 3,447)
| Started (UK time) | Ended | Discharge time |
|---|---|---|
| 29 Sep 2026, 02:03 | 05:42 | 4 h 12 min |
| 29 Sep 2026, 00:25 | 01:27 | 51 min |
| 28 Sep 2026, 23:24 | 00:02 | 38 min |
| 28 Sep 2026, 22:30 | 23:06 | 36 min |
| 28 Sep 2026, 18:31 | 21:59 | 3 h 8 min |
| 28 Sep 2026, 17:53 | 18:14 | 21 min |
| 28 Sep 2026, 13:43 | 17:30 | 3 h 43 min |
| 27 Sep 2026, 09:16 | 12:47 | 1 d 6 h |
| 27 Sep 2026, 07:31 | 08:39 | 1 h 2 min |
| 27 Sep 2026, 06:58 | 07:12 | 5 min |
| 27 Sep 2026, 06:06 | 06:27 | 22 min |
| 27 Sep 2026, 05:21 | 05:46 | 25 min |
| 26 Sep 2026, 14:52 | 05:00 | 14 h 31 min |
| 26 Sep 2026, 14:12 | 14:28 | 16 min |
| 26 Sep 2026, 12:15 | 13:56 | 2 h 23 min |
| 24 Sep 2026, 19:23 | 11:57 | 1 d 19 h |
| 24 Sep 2026, 16:56 | 17:45 | 46 min |
| 24 Sep 2026, 14:24 | 16:30 | 2 h 36 min |
| 24 Sep 2026, 13:48 | 14:08 | 20 min |
| 24 Sep 2026, 09:23 | 13:30 | 4 h 24 min |
| 24 Sep 2026, 05:17 | 09:07 | 3 h 27 min |
| 24 Sep 2026, 04:24 | 04:44 | 14 min |
| 23 Sep 2026, 19:33 | 03:15 | 9 h 7 min |
| 23 Sep 2026, 19:01 | 19:05 | 4 min |
| 31 Dec 2025, 07:50 | 23:59 | 16 h 9 min |
| 30 Dec 2025, 07:21 | 07:29 | 1 d 0 h |
| 30 Dec 2025, 04:08 | 07:00 | 2 h 52 min |
| 30 Dec 2025, 03:05 | 03:45 | 40 min |
| 29 Dec 2025, 20:47 | 02:45 | 5 h 57 min |
| 29 Dec 2025, 18:57 | 20:30 | 1 h 32 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 3,572 raw blocks were merged into 3,447 continuous discharge periods (gaps under 15 min joined).
Rain nearby last 30 days
Nearest live rain gauge: Ross Priory, 12.7 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
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.