Reservoirs & lochs · South Wales
Llwyn-on Reservoir
Llwyn-on Reservoir — reservoir in Wales, UK.

Wikimedia Commons contributors — see linked file page for photographer and licence licence
Plan your visit
- Typical visit
- 1 h–2.5 h
- Nearest railway station
- Pontsticill · 5.5 km
- Free entry
- Dog-friendly
About
Llwyn-on Reservoir is a reservoir in the United Kingdom. Managed by Dŵr Cymru Welsh Water. Wikidata describes it as: "reservoir in Wales, UK". Coordinates: 51.7972°, -3.4408°.
Photo gallery
From the Wikipedia article
Llwyn-onn Reservoir is the largest and southernmost of the three reservoirs in the Taf Fawr valley in South Wales. Cardiff Corporation Waterworks obtained an act of Parliament in 1884 to authorise construction of the reservoirs, to increase the water supply for Cardiff, but construction of Llwyn-onn Reservoir did not start until 1911 and was completed in the 1920s. The reservoir, which has been owned and managed by Welsh Water and its predecessor organisation, the Welsh Water Authority, since 1973, is located within the Brecon Beacons National Park with its eastern half in the Merthyr Tydfil unitary authority area and the western half in Rhondda Cynon Taf. The village of Llwyn-Onn is nearby and the A470 trunk road runs along its eastern shoreline.
Excerpt from Wikipedia under CC BY-SA 4.0. See the source article linked in Sources below.
Background
History
Cardiff Corporation had bought out the Cardiff Waterworks Company in 1879, and in March 1881 asked their Borough Engineer, John Avery Brandon Williams, to produce a report on all possible sources of water for Cardiff, so that they could plan for the future. Williams presented his reports in May and August 1881, suggesting that the best scheme was to impound the waters of the upper Taff Fawr. After consulting the water engineer John Frederick Bateman, who also recommended the Taff Fawr scheme in June 1882 as the one most likely to meet the needs for water at the lowest cost, the Corporation presented a bill to Parliament in November 1883, which was considered by a House of Commons Committee…
Sourced from Wikipedia under CC BY-SA 4.0.
- Coordinates
- 51.7972, -3.4408
- District
- Merthyr Tydfil
- Parish
- Vaynor
- Postcode
- CF48 2HT
- Parliamentary constituency
- Merthyr Tydfil and Aberdare
- Nearest railway station
- Pontsticill — 5.5 km
Sources
- wikidata: Q6662908 (CC0)
- wikipedia: Llwyn-onn Reservoir (CC BY-SA 4.0)
- commons: Llwyn-on reservoir.jpg (CC BY-SA 4.0)
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Frequently asked questions
- Where is Llwyn-on Reservoir?
- Llwyn-on Reservoir is in South Wales, United Kingdom (postcode CF48 2HT), in the parish of Vaynor.
- Who runs Llwyn-on Reservoir?
- Llwyn-on Reservoir is operated by Dŵr Cymru Welsh Water.
- How do I get to Llwyn-on Reservoir?
- The nearest railway station is Pontsticill, about 5.5 km away. Drivers can navigate to postcode CF48 2HT.