tender for dharuhera town :- annual maintenance estimate for sewerage scheme dharuhera town for the financial year 2025-26.operation and maintenance of dharuhera sewerage scheme including sw, rcc, hdpe pipes, pumping machinery including all required items. repairing of trasformer, dg sets, cameras,cables etc. providing safety kits, chlorine, m. oil, compressor oil, mustard oil etc. testing stp parameters, desilting of sewer lines etc. hiring of tractor trolly for disposal. repairing of electric installation, street light, chlorination system, and all other installation for 2 months (october and november) from the date of commencement excluding repair of civil structures.