Afon Llynfi river pollution: not enough evidence, says Natural Resources Wales

Afon Llynfi river pollution: not enough evidence, says Natural Resources Wales

Afon Llynfi water tests after pollution kills fish

Afon Llynfi water tests after pollution kills fish

Hundreds of fish killed in Afon Llynfi pollution spill

Hundreds of fish killed in Afon Llynfi pollution spill