Dear Sir, some questions: ...

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Dear Sir, some questions: what kind of pipes are you using? we faced that problem too in West Africa, and found a solution: better planning. Control sinks, where you have the opportunity to clean (maintain) your network permanently by flushing with citrus-acid , brushing and flushing. The acid can be forgotten if the maintenance plan is adjusted due to usage...for more information: info@wewaco.com