Wales · Natural Resources Wales
Coppet Hall
Avoid swimming
Active sewage discharge from Langdon WwTW Storm Overflow (5 active events within 5km, Welsh Water).
High confidence — an active discharge is being reported right now — the event itself is fresh evidence.
Status computed 2 Nov 2026, 21:13 UTC; statuses refresh every 15 minutes.
What we know
- Regulator classification
- Excellent
- Pollution risk forecast
- Not published for this spot
- Active discharges
- 5 within 5km right now
- Recent discharges (last 48 hours)
- 7 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 14 September 2026 · 8 weeks ago. Source: Natural Resources Wales.
Risk forecasts are published for 14% of Welsh spots only.
Langdon WwTW Storm Overflow (Welsh Water) — started 1 Nov 2026, 06:15 UTC.
Most recent at Langdon WwTW Storm Overflow (Welsh Water) — ended 2 Nov 2026, 03:30 UTC.
Sewage-map data as of 2 Nov 2026, 21:00 UTC — discharges traced through the river network.
What this verdict means
Avoid swimming is driven by the strongest negative signals this map tracks: an active sewage discharge affecting this water, or a regulator classification of Poor or a closure. After a discharge ends, waiting at least 48 hours before swimming is the standard advice.
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.