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It's a mezzanine floor, the internal patio drain doesn't clear and the downpipe is poorly constructed; we believe the entire installation needs replacing. It floods every time it rains. This is a communal works issue, we need a quote for the community president. It's an old backpack cistern; the flat is from the 1960s. Two years ago, I replaced the flush valve with a new one (the blue and white plastic type). Now it leaks into the bowl and the tank seems to never stop filling. The stopcock is next to the tank. The float mechanism works perfectly. The water outlet never stops; it constantly keeps running, and we had to close the stopcock to avoid wasting water.
