Hafren Dyfrdwy supplies Mid Wales & Shropshire. Water is typically soft (~60 mg/L CaCO₃) — minimal limescale risk and generally gentle on appliances. Enter your postcode for your exact zone's report.
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Hafren Dyfrdwy supplies Mid Wales & Shropshire with drinking water drawn from upland Welsh reservoirs and River Severn abstractions in Mid Wales and the Welsh Borders.
Hafren Dyfrdwy (formerly Dee Valley Water, now a subsidiary of Severn Trent) is the smallest water company operating in England and Wales. It serves a rural area spanning parts of Shropshire and Mid Wales, including Oswestry, Welshpool, and Wrexham. The supply draws from upland Welsh sources — the River Dee and associated reservoir storage — producing soft, low-mineral water. Hardness is typically 40–80 mg/L CaCO₃. The sparse rural population means distribution networks are long in some areas, which is managed through chlorination. The company's small size and predominantly upland source water contributes to a clean water quality record with no active PFAS enforcement notices.
With typical hardness of approximately 60 mg/L CaCO₃, water in the Hafren Dyfrdwy supply area is classified as soft. This means minimal limescale risk and good appliance longevity across the supply area.
Notable: Soft upland water (40–80 mg/L). Very rural coverage. Clean compliance record. No active PFAS notices.
Yes. All treated water supplied by Hafren Dyfrdwy meets the UK Drinking Water Regulations. The Drinking Water Inspectorate (DWI) audits every water company annually — Hafren Dyfrdwy serves 0.1 million customers across 13 supply zones. Each zone is tested thousands of times per year and results are published in the annual compliance report.
However, water quality varies significantly between zones within the Hafren Dyfrdwy supply area. Your specific zone may have different hardness, nitrate, or THM levels from your neighbour in a different zone. That's why it's worth checking your exact postcode above.
Enter your postcode in the box above to see zone-specific data for your address — including hardness, nitrates, lead, chlorine, fluoride, and THMs — drawn directly from Hafren Dyfrdwy's most recent annual compliance report.
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