England · City of Westminster
The Serpentine - Hyde Park
No. Sewage discharged 3.3km away 9 hours ago.
Water quality only This says nothing about tides, rip currents, cold water shock or lifeguard cover. Cold water and currents are dangerous even when the water is clean. Read the local signs before you go in. What we cannot tell you.
Checked UK time
Why this verdict
- Bathing season
- Closed until 15 May (neutral factor)
- Recent sewage discharge
- 3.3km away, 9 hours ago (negative factor)
- Annual classification
- Good (positive factor)
- Pollution risk forecast
- Normal (positive factor)
- Rainfall (24h)
- 0mm (positive factor)
- Latest E. coli
- 560 cfu/100ml (positive factor)
- Latest intestinal enterococci
- 150 cfu/100ml (positive factor)
Out of season
Weekly sampling and the daily pollution-risk forecast pause on 30 September and resume on 15 May. This verdict rests on the annual classification, live storm-overflow data and rainfall in the last 24 hours.
Storm overflows are driven by rain, so they spill more in autumn and winter than in summer. See every spill happening now across the UK.
Recent sewage discharges nearby
Storm overflows operated by Thames Water within ten kilometres in the last 48 hours.
- Ended 9 hours agoGrosvenor Ditch CSO · into River Thames3.3km from the bathing water
See Thames Water's own storm-overflow map(opens in a new tab) →
Latest bacteria reading
Latest sample · 15 September 2026 · 2 weeks ago
- E. coli
- 560cfu/100ml
- Intestinal enterococci
- 150cfu/100ml
This is the most recent reading. Sampling resumes on 15 May. E. coli and intestinal enterococci are the indicator organisms used in the official classification.
Classification record, 2015 to 2025
Rated Sufficient in 2015 and Good in 2025.
The regulator republishes this every November as a percentile over readings from up to four bathing seasons, so it describes the water's record rather than today. No classification was made for 2020, when the pandemic cut the bathing season short.
Storm overflows nearby
The Environment Agency does not link any storm overflow directly to The Serpentine - Hyde Park, so there is no spill record for it. There were 98 monitored overflows within ten kilometres in 2025, whether or not they drain here.
Common questions
- Can you swim at The Serpentine - Hyde Park?
- No. Sewage discharged 3.3km away 9 hours ago. The Serpentine - Hyde Park is a designated bathing water, so it is sampled and rated every season. This answer covers water quality only, not tides, currents or lifeguard cover.
- What is the water quality like at The Serpentine - Hyde Park?
- The Serpentine - Hyde Park is rated Good in the regulator's 2025 annual classification, a percentile taken over readings from up to four bathing seasons. That is up from Sufficient the season before. The most recent sample, taken 15 September 2026, showed 560 cfu/100ml of E. coli and 150 cfu/100ml of intestinal enterococci.
- Has there been sewage at The Serpentine - Hyde Park recently?
- Yes. 1 storm overflow within ten kilometres of The Serpentine - Hyde Park: 1 in the last 48 hours.
Where this data comes from
- Contains Environment Agency information © Environment Agency and database right
- Contains Thames Water storm overflow data © Thames Water Utilities Limited
- Spill counts from the Environment Agency EDM Storm Overflow Annual Returns, 2021 to 2025, published annually.
- View the regulator's full profile
Other beaches nearby
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Gareth Clubb