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River Summit and Festival comes to Henley-on-Thames September 2026

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River Summit and Festival comes to Henley-on-Thames this September with a free community day, film festival and major water summit The River Summit and Festival brings together scientists, policymakers, artists and communities for two days of honest conversation about the future of our waterways Henley-on-Thames will host The River Summit and Festival on 4th and 5th September 2026, a two-day independent gathering that brings together citizen scientists, water company leaders, regulators, lawyers, artists and members of the public to address the most pressing issues facing our waterways. Friday 4th September - The River Summit, Henley Town Hall, 9am-6pm The River Summit takes place at Henley Town Hall, with a full day of panels, workshops, talks and creative expression. Confirmed speakers include Monica Feria-Tinta, international human rights barrister and author of Barrister for the Earth, Ash Smith, whose decade-long investigation inspired Channel 4's Dirty Business, and Helen...
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First reading near Wargrave & Shiplake Regatta start

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Wednesday 8/July, and Irene and I took our first reading near Wargrave & Shiplake Regatta general start. Results were 738 cfu/100ml which, if it were a lab measured reading, the E.A. might classify as Sufficient. The precise location of sampling was at   W&S Regatta general start  where there is a small “No Mooring” sign. No regatta pontoons in place yet. We hope to take a reading here each week leading up to the regatta. I hope the results won’t be too scary. I plan to be at the regatta, and possibly get wet.
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The Loddon near Wargrave Sewage Treatment Works 19/June/2026

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On the 19th June we did a boat trip up the Loddon to near where Wargrave Sewage Treatment Works discharges “treated” sewage. There had been little recent rain, so it is probable that the sewage works were working normally.  The first sample was taken just upstream of the sewage discharge point. This sample would include water from the Loddon and St Patrick’s stream. ⬇️ Small amount of E.coli detected. The next sample was taken a few metres downstream, at the discharge point. ⬇️  E.coli reading = TNTC = too numerous to count. The final sample was taken just before the Loddon joins the Thames. ⬇️ At 6266 cfu/100ml E.coli reading still very high. (Environment Agency advise against swimming if reading is greater than 900 cfu/100ml) An additional sample was also taken on the Thames, just upstream of Shiplake Lock.⬇️ We generally find little or no E.coli here. I swim here.
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SWIM at Shiplake Parish AGM 21/05/2026

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  I did a presentation on SWIM to Shiplake Parish AGM, and asked if the parish would consider contributing. The floor was then asked whether the Parish should provide funding, and they responded “yes”.  The Parish Council will now consider this at their next meeting.🙂 🥁 The results are in….. We got funding from the Shiplake Parish 😁
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Shiplake Lock upstream - 20/05/2026 - 52

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Very low readings again this week 52 cfu/100ml, and last week it was 11 cfu/100ml. The water above Shiplake lock is upstream of Wargrave Sewage Treatment Works 
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Basmore Lane, Shiplake - 23/04/2026 - 472

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Marsh lock - 21/April/2026 - 2159 cfu/100ml

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  Today’s reading jumped to 2159 (Poor) HoTWater’s Fluidion Alert 1 reading from the same sample was 1847 (Poor). 
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