It said those activities were a threat to quality water production and supply from the Jumbussie water treatment plant at the Wa West District due to the increasing turbidity level of the water from the Black Volta.
The Upper West Regional Water Quality Assurance and Production Manager at the GWCL, Mr Cletus Diekuu, expressed the concern when a joint team from the Upper West Regional Security Council (REGSEC) and the Wa West District Security Committee (DISEC) visited some galamsey sites in the Wa West District.
The visit was occasioned by a report from the GWCL to the national security on the activities of illegal miners in the area, which had been a threat to the effective operation of the company.
The team, led by Dr Hafiz Bin Salih, the Upper West Regional Minister, visited a galamsey exploration site at the GWCL Booster station at Dorimon and mining sites at Kolingu and Poyentanga in the district.
The team destroyed four chanfangs, two water pumping machines, and a mechanised borehole all at a galamsey site within the Poyentanga enclave.
Mr Diekuu noted that those activities had a direct effect on the river since the chemicals from the mining activities were washed into the river by the rains.
“During this rainy season, we are recording turbidity of 3,000, in the dry season we record 100, at most 200, and our standard is that the water we treat for consumption should be five or less in terms of turbidity.
Dr Salih, the Chairman of REGSEC, indicated that the activities of the illegal miners were unacceptable and would not be condoned in the region.
He said REGSEC would not sit aloof while those activities continued, and gave the assurance that they would intensify their monitoring to arrest the menace.
Madam Vida Diorotey, the Wa West District Chief Executive and Chairman of the DISEC, noted that the assembly was collaborating with the security services and the traditional leaders in the district in the fight against the menace.