Blocked Drains in Pontypridd

Pontypridd's terraces are stepped up the valley sides, and that geometry drives most of the drainage work we do here. Drain runs are long, often external, and drop steeply between the property and the connection. Steep falls are not automatically good: water can run away faster than the solids it is meant to be carrying, leaving deposits part-way down the run that build until something catches on them.

Long external runs also mean more of the pipework is exposed to the weather and to ground movement on sloping sites. Joints open slightly, roots and silt get in, and rainfall running off the hillside adds loading the original system was never sized for. When we survey a drain in Pontypridd we are usually looking for a specific settled section rather than a single obstruction near the house.

Older valley terraces frequently retain an interceptor trap near the boundary, which is a reliable place for wipes and debris to gather and a common cause of the same blockage recurring. As elsewhere in Welsh Water's area, shared drains and runs beyond your boundary generally became theirs in October 2011 — on a stepped terrace where several houses share one run downhill, that covers a good deal of the pipework. Highway drainage is Rhondda Cynon Taf's.