River polluted in Rhondda after sewer damage
A collapsed wall has damaged a foul sewer in Rhondda Cynon Taf causing sewage to discharge into a river, say Environment Agency Wales.
A 1.5km (0.93m) stretch of the Rhondda Fawr is affected and is discoloured with sewage.
A spokesperson for Dwr Cymru Welsh Water said they will be carefully monitoring the pipe over the weekend before starting repairs on Monday.
They say services to customers are not affected.
A spokesperson from Environment Agency Wales said: "Approximately 1.5km stretch of the river is currently affected by the discharge and is appearing discoloured with sewage.
"We're keeping a close eye on the water quality but so far we haven't seen any signs of fish struggling.
"We'll continue to have a presence at the site and will monitor the river until we are sure that the repairs have been made and the discharge has stopped.
Dwr Cymru Welsh Water said in a statement: "We are currently dealing with a situation at Llwynypia where a wall belonging to a third party has collapsed and caused damage to our wastewater network.
"We will be carefully monitoring the pipe over the weekend before commencing the necessary repair work on Monday.
"No services to customers are affected by the situation."
Environment Agency officers last week began emergency work to reduce flood risk to about 200 properties caused by a recent landslip in the area.
The collapse of the wall will not pose a further flood risk to nearby properties, said the agency.