Wales · Natural Resources Wales
Watch House Bay
Avoid swimming
Regulator classification: Poor.
High confidence — the regulator's own classification speaks for itself.
Status computed 7 Nov 2026, 00:58 UTC; statuses refresh every 15 minutes.
What we know
- Regulator classification
- Poor
- Pollution risk forecast
- Not published for this spot
- Active discharges
- None within 5km
- Recent discharges (last 48 hours)
- 27 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.
Most recent at Barry Docks Pumped Storm Overflow (Welsh Water) — ended 6 Nov 2026, 23:23 UTC.
Sewage-map data as of 7 Nov 2026, 00:00 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.