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Annual report
Drinking Water 2025

Dŵr yfed 2025: Cyflenwadau dŵr preifat yng Nghymru

Published 01:00:00 BST 7 July 2026

Table of contents

Dŵr yfed 2025: Cyflenwadau dŵr preifat yng Nghymru
Introduction
Ymholiadau
Canfyddiadau ffurflenni data
Astudiaethau achos

Next : Introduction

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