I’d lay that it is odds on that it is the lavatory flush. The valve fails to seal allowing water to drain,often imperceptibly, into the bowl
The modern dual flush was introduced to save water but has been a disaster, wasting more water than it saves. Mine have nothing but trouble since we ditched the old siphon flush
www.theguardian.com/environment/2020/sep/29/dual-flush-toilets-wasting-more-water-than-they-save
Last edited by: CGNorwich on Sat 19 Mar 22 at 19:39
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