The latest Combined Sewer Overflow data shows a slight improvement in the Trym in 2024 vs 2023. But there was still 1,328 hours of spilling of untreated waste water which is pretty awful.
Across Bristol (if we ignore the New Cut and tidal Avon) the Trym is second only to the Frome (with 1,989 hours) for hours of spilling. Feel free to raise this with your councillor and/or MP.
See the full data here where you can home in on the results you want to see using the filters.
Thanks to Peter Coleman-Smith for highlighting these figures.