Identification of Surface Water Treatment Plan (WTP) Effluent and Distribution Water Quality in Wonogiri Regency, Central Java

This study analyzed the water treatment system into drinking water, and the quality of raw water and distribution results at Perumda Air Minum Giri Tirta Sari, Wonogiri Regency. The water treatment plant's (WTP) for surface water consists of intake, pre-sedimentation, coagulation, flocculation, sedimentation, filtration, reservoir storage, and distribution. The sludge resulting from the deposition process is still not managed. Further planning is needed to control environmental pollution that may occur due to dumping sludge into streams. The quality of river raw water that has not met the quality standard is total coliform and color. Measurement of water on the customer's tap shows that all the quality standards of drinking water have met the criteria to be safe for use by residents