The DOE conducts a national water quality monitoring programme for the whole country. The monitoring programme covers air, river water, ground water, coastal and marine waters. The purpose is to detect water quality changes and identify pollution sources. Each year the results of the monitoring is summarised in an Environmental Quality Report. Monitoring of industrial effluents is also carried out, normally by requiring industries to submit effluent quality reports. Monitoring is, in most cases, now conducted by a designated private contractor, Alam Sekitar Malaysia Sdn. Bhd.