Summary of quantitative results
Guidelines for exceedances are based on:
United Kingdom
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Chemistry tests
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Old River Lea in Waltham Forest
Point 2 has data for clarity, water_flow, water_level, ammonia, conductivity, water_temperature, phosphates, current_weather, previous_weather, odour, pollution_sources, algae, water_use, colour, on_the_water_s_surface, turbidity, previous_weather_description, and current_weather_description from 6 April 2024 to 5 October 2025.