Wales · Natural Resources Wales
Aberystwyth South
Use caution
Sewage discharge in the last 48h from Bow Street Storm Overflow (1 recent event within 5km, Welsh Water).
High confidence — a discharge in the last 48 hours is the driving signal.
Status computed 26 Aug 2026, 05:58 UTC; statuses refresh every 15 minutes.
What we know
- Regulator classification
- Good
- Pollution risk forecast
- Normal
- Active discharges
- None within 5km
- Recent discharges (last 48 hours)
- 1 within 5km
- Upstream river network
- Downstream of a Welsh Water discharge in the last 48 hours
- Surrounding overflow coverage
- Within an ingested water company network
- Monitoring season
- Currently in regulator monitoring season
Last sampled 3 August 2026 · 7 weeks ago. Source: Natural Resources Wales.
Forecast expired 26 Aug 2026, 08:29 UTC. Source: Natural Resources Wales.
Most recent at Bow Street Storm Overflow (Welsh Water) — ended 25 Aug 2026, 13:15 UTC.
Sewage-map data as of 26 Aug 2026, 05:30 UTC — discharges traced through the river network.
What this verdict means
Use caution means at least one signal argues against swimming right now — a discharge in the last 48 hours nearby or upstream, an elevated pollution risk forecast, or a weak classification. The evidence above shows which signal is driving it.
Every verdict here is computed from regulator classifications, sample dates, pollution-risk forecasts, and water-company discharge reports — it is not a water test. Absence of a negative signal is not positive confirmation of safety, and conditions on the day (rainfall, currents, cold) matter as much as water quality. Read how statuses are decided.