April 16 (SeeNews) - Montenegro has so far completed some 20% of the works on a 76.6 million euro ($90.3 million) wastewater treatment plant project in the southern Zeta municipality, which is crucial for improving public health and environment protection in the broader area of the capital Podgorica and beyond, the head of public utility company Vodovod i Kanalizacija Podgorica, Aleksandar Misevic, said.