The most detailed economic analysis was undertaken for ten Hot Spots with the highest weighted score for the total score by categories “Water Quality and Human Health”, “Pollution Control” and “Environmental Biodiversity”. These are the following Hot Spots: - Public Utility Association “Kyivvodokanal”, City of Kyiv; - Dnipropetrovsk production water supply and sewage system management (Vodokanal); - Public Utility Company (PUC) “Vodokanal”, City of Zaporizzhya; - PUC “Chernigivvodokanal”, City of Chernigiv; - Industrial complex “Kryvorizhstal”, City of Kryvyj Rig; - Public Corporation “Metallurgical Industrial Complex Zaporizhstal”, City of Zaporizzhya; - PUC Vodokanal, City of Zhytomyr; - PUC Vodokanal, City of Kherson; - PUC “Loutskvodokanal”, City of Loutsk; - Metallurgical Industrial Complex “Dzerzhynsky Plant”, Dniprodzerzhynsk. The remaining 12 Hot Spots are provided with professional judgment, including those by analogy with the same type enterprises (mainly, water supply and sewage system management).