The Warren, Hay On Wye
Caution
This spot is classified Sufficient — it meets the minimum bathing-water standard, but it's the lowest passing grade.
Checked against Natural Resources Wales · data last changed 2 months ago.
This spot’s record
The Warren, Hay On Wye is in Powys, about 54 km from Ystradgynlais. The Warren, Hay On Wye was rated Sufficient in 2025 by Natural Resources Wales. Across the 12 most recent samples published by Natural Resources Wales, E. coli counts ranged from 10 to 1,182 per 100 ml. The highest was taken on 3 September 2025. A classification is calculated from percentiles across four seasons, so no single reading decides how this water is rated.
Recent sample results
The last 12 bacterial samples published by Natural Resources Wales, most recent on the right. Counts are per 100 ml of water.
Dashed line: 500 E. coli per 100 ml, the Bathing Water Directive guide value for coastal / transitional waters.
| Date | E. coli | Enterococci | Assessment |
|---|---|---|---|
| 7 Sept | 490 | 290 | — |
| 26 Aug | 99 | 340 | — |
| 13 Aug | 220 | 146 | — |
| 31 Jul | 117 | 97 | — |
| 6 Jul | 54 | 10 | — |
| 16 Jun | 45 | 18 | — |
A bathing water's official classification is calculated from percentiles across four bathing seasons, not from any single sample — so one high reading doesn't mean a spot is unsafe, and one low reading doesn't mean it's clean today.
Facilities & access
- Parking
- YesCar park about 250 m away (OpenStreetMap)
Official water quality
Classified Sufficient in 2025.
Official bathing-water profileCommon questions
- Can you swim at The Warren, Hay On Wye right now?
- The Warren, Hay On Wye is currently marked "Caution". This spot is classified Sufficient — it meets the minimum bathing-water standard, but it's the lowest passing grade. This reflects the latest data published by Natural Resources Wales. Conditions change quickly — always assess the water yourself before entering.
- What is the water quality like at The Warren, Hay On Wye?
- Natural Resources Wales classified The Warren, Hay On Wye as Sufficient in 2025. Classifications are a rolling assessment of bacterial samples taken over four bathing seasons, measured against E. coli and intestinal enterococci limits set by the EU Bathing Water Directive.
- Is there a swimming ban or warning at The Warren, Hay On Wye?
- There are no active bathing restrictions published by Natural Resources Wales for The Warren, Hay On Wye. That is not a guarantee of safety — assess conditions yourself.
- What facilities are there at The Warren, Hay On Wye?
- The Warren, Hay On Wye has parking. Facility information comes from OpenStreetMap contributors.
Get told when this changes
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