Design, construction and author’s supervision for a wastewater treatment plant and sewerage and water supply networks in Nikolovo village – Stage I

Summary

The tender covers the design, construction and author’s supervision for Stage I of a wastewater treatment plant and the sewerage and water supply networks in Nikolovo village. The design must cover the entire planned facility, while the construction works concern Stage I only: construction of the wastewater treatment plant, approximately 4,355 metres of main sewer branch, and replacement of approximately 4,000 metres of existing water pipeline. The estimated contract value is EUR 11,280,151.14. The design period is up to 100 calendar days and the construction period is up to 800 calendar days; the total period is up to 900 calendar days. The tender submission deadline is 19 October 2026. Participation requires evidence of the relevant construction registration, professional liability insurance, minimum total turnover of EUR 7,669,378 over three years, comparable design and construction experience, and the required designers and construction specialists.