A08.609.2026 – Cleaning and inspection of gravity sewerage in Leiden

Summary

The tender covers regular cyclical cleaning and inspection of gravity sewer pipelines in Leiden, disposal of removed RKG sludge, temporary traffic-management measures and other ancillary works. Project-based sewer cleaning and inspection and the cleaning of wastewater pumping stations are outside the scope. A framework agreement will be concluded with one bidder for an initial period of two years, with two possible one-year extensions; the maximum term is four years and the planned start date is 1 January 2027. The estimated value is EUR 250,000–350,000 per year, EUR 1,000,000–1,400,000 over four years, with a maximum contract value of EUR 1,400,000. Price is the only award criterion. The tender deadline is 3 November 2026 at 10:00. Bidders must provide the required technical, quality, safety, environmental and financial-capacity evidence and comply with the ESPD and tender-document requirements.