238 FORESTS, WOODS, AND TREES 
Elan and Claerwen area, 45,562 acres, supplying Bir- 
mingham, and with a good afforestation scheme, is fully 
described on pp. 101-104. 
Milford Haven Urban District Council obtains its water 
supply from three reservoirs at Fordway, with a gathering 
ground of about 200 acres, between 92 and 190 feet eleva- 
tion. This area is leased by the Council, and comprises 
40 acres of arable land, 155 acres of hill pasture and moor, 
and 5 acres of plantations. There are some habitations and 
farm-steadings on the gathering ground; and to deal with 
the contamination from these, a system of drainage with 
cesspits and small filters was adopted, which is reported 
to be satisfactory. 
Lianelly obtains its water supply from two gathering 
erounds with a total extent of 4398 acres: 
1. Lliedi Valley, with two reservoirs, 4048 acres, be- 
tween 200 and 950 feet elevation, comprising 400 acres of 
arable land, 3000 acres of hill pasture and moor, and 648 
acres of plantations. 
2. Cwm Trebeddrod, with one reservoir, 350 acres, 
between 200 and 550 feet elevation, comprising 50 acres 
of arable land, 250 acres of hill pasture, and 50 acres of 
plantations. 
On the Lliedi area, there are 509 inhabitants and 102 
dwelling-houses and farmsteads; and the Corporation own 
only 100 acres in all. On the Cwm Trebeddrod area there 
are 50 inhabitants and 10 dwelling-houses and farmsteads, 
and the Council own only 15 acres. 
The risk of contamination would appear to be great, but 
stringent bye-laws for the prevention of pollution have been 
made under section 25 of the Llanelly Waterworks Act, 
1909. “The gathering ground is inspected, and all sanitary 
arrangements in the houses on the area are kept under 
supervision. The farmyards are drained on to adjoining 
lands and the watercourses are kept clear.” The bye-laws 
provide that sanitary arrangements shall be made by owners 
and occupiers of lands on the drainage area. No pigs may 
