Aberkenfig Water Hardness & Quality Report (2026)

Welsh Water supplies Aberkenfig, the Bridgend Borough village in the Llynfi and Garw valley corridor — a former coal and ironworks community between Tondu and Bridgend at the foot of the Llynfi and Ogmore valleys, with a tight-knit community character shaped by its valley mining and industrial heritage and a setting at the gateway to the south Wales valley communities of Maesteg and the Garw — from the Ogmore Valley upland reservoir catchment treated at Llantrisant Water Treatment Works. At 78 mg/L (5.5°Clark), Aberkenfig's water is soft — consistent with the impermeable Carboniferous Coal Measures (Westphalian) and Millstone Grit of the upper Llynfi and Ogmore upland that contributes very little calcium to the reservoir supply.

Aberkenfig lies in the lower Llynfi–Ogmore valley corridor where Welsh Water delivers upland reservoir supply from the Carboniferous Coal Measures and Millstone Grit catchment above the Bridgend coalfield. The impermeable Coal Measures moorland yields very little calcium, producing 78 mg/L with TDS 142 mg/L — soft water with a very low TDS/hardness ratio (1.82) characteristic of the Welsh Water Bridgend and Ogmore valley distribution zone at Maesteg (76 mg/L) and Tondu in the same upland reservoir supply corridor.

At 78 mg/L, limescale is a moderate and manageable domestic concern in Aberkenfig. Descaling the kettle every two to three months is typically adequate. The combi-boiler has low scaling risk. Washing-up liquid lathers readily with modest quantities. Taps and shower heads develop light deposits; a quarterly wipe with white vinegar keeps fixtures clean. Aberkenfig's soft supply is characteristic of the Bridgend valley coalfield — the same impermeable Coal Measures shales that once produced coal from the valley floor delivering clean, soft, low-mineralisation water from the upland reservoir to households throughout the lower Llynfi valley.