WATER CATCHMENT AREAS 237 
Vyrnwy catchment area, 22,742 acres, supplying Liver- 
pool, and with a good scheme of afforestation, is fully 
described on pp. 88-94. 
Machynlleth Urban District Council obtains its water 
supply from Esgeireira reservoir, Llanwrin, with a gathering 
ground of 271 acres, reported in Journ. Board of Agriculture, 
xi. 471 (1904), to be owned by the Council, and to com- 
prise 204 acres of hill pasture and 67 acres of woodland. 
The Clerk states in a letter that only 34 acres are owned 
by the Council. 
Lianidloes obtains its water supply from a gathering 
ground of 260 acres at Llangurig, all hill pasture and 
moorland. None of it is owned by the Town Council. 
The water is filtered, but no other precautions are taken 
against contamination. 
Newtown and Llanllwehaiarn Urban District Council obtain 
their water supply from Mochdre reservoir, with a gathering 
ground of 1821 acres, between 662 and 1391 feet elevation, 
in Mochdre and Kerry. The total area, of which only 10 
acres are owned by the Council, comprises 334 acres of 
arable land, 1377 acres of hill pasture and moor, and 110 
acres of plantations. There are 17 farm-steadings on the 
gathering ground, and a careful inspection is made monthly 
of each farm. Cesspools are provided to prevent the sewage 
getting into the intake stream ; and no flood water is taken 
into the reservoir. This area would seem to be suitable for 
an afforestation scheme, which would do away with the 
arable land and farm-steadings, and prevent possible 
contamination. 
Aberystwyth obtains its water supply from Llyn Llygad 
Rheidol, a small lake or tarn just below the summit of 
Plynlimmon, with a gathering ground of 133 acres, between 
1665 and 2468 feet elevation, all moorland without any 
habitations, and not owned by the Town Council. There is 
no filtration. 
