Summary of quantitative results
Guidelines for exceedances are based on:
United Kingdom
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Chemistry tests
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The Ching in Waltham Forest
Hatch Roundabout - Downstream has data for phosphates, ammonia, water_level, water_flow, on_the_water_s_surface, pollution_sources, odour, algae, colour, clarity, current_weather, previous_weather, current_weather_description, and previous_weather_description from 21 March 2025 to 8 July 2026.
This data is part of a bigger dataset, Lea Guardians.