ISLAMABAD - Capital Development Authority (CDA) will inaugurate Rs 2.727 billion sewerage treatment plant (STP) in Sector I-9 on Tuesday amid reservations whether the existent sewerage network could carry the required effluents to the site. The PSDP funded project will cater to the needs of 25 sectors with a sewerage treatment capacity of 17 million gallon per day. However, critics within the Engineering Wing of the Authority opined the construction of multi-billion facility was all but useless, as the existent sewerage pipeline network in the city couldn't carry sufficient effluents to the plant. "CDA should have first focused on rehabilitation of the sewerage network, which has been laid down half a century ago," a senior official of CDA told TheNation. "The existent network is ruptured at several points allowing the sewerage to mix up with the drinking water as well as come out in streets instead of heading to its destination," the official said. He further said that due to unavailability of sewerage lines in a number of areas, people were directly discharging sewer into natural streams. However, when contacted, Project Director STP Shahid Sohail said that the Authority was carrying out maintenance of the broken sewerage lines and that currently the plant was receiving about 10 million gallons sewer per day. "The quantity will increase further once the entire network is repaired," Shahid hoped. He said presently storm water was directed towards the natural streams while very little sewer discharged in the streams. He also said that the plant could treat a diverse quantity of influx and there was no restriction of quantity of sewerage to be treated. In response to a query, the project director said that proposed plan of establishing minor plants catering to the need of one or two sectors aimed at newly developing sectors like G-13, 14, I-15, 16 and D-12 etc while the I-9 STP had been established for the old sectors. The plant has been established in four phases with a French soft loan amounting to 19.8 million euros while the remaining expenditures have been incurred by the federal government. The plant has been established by a joint venture of French construction company OTV-VEOLIA and Habib Rafiq (pvt) Ltd in 36 months. The water component of the sewer, after treatment, would be discharged in Nullah Leh while the solid component would be further treated to make the organic fertilizer, another official of the Authority informed.