As of 9 August 2026, HOFOR had 5 of the 8 new waterworks in its waterworks programme in operation, all supplying softer water: Brøndby, Marbjerg, Søndersø stage 1, Thorsbro and Gevninge. The Greater Copenhagen utility still expects the programme to finish in 2032.
The three still to come
Regnemark, the sixth plant, is under construction with completion scheduled for 2028, while contractors' claims for extra costs from the hard winter of 2026 are being negotiated. Islev was out to tender in August 2026, and Gørløse is in design. At Thorsbro, HOFOR is also preparing a tender for an add-on PFAS treatment project.
A reservoir decision still open
The Tinghøj reservoir is in design. HOFOR's 9 August 2026 status note says early estimates show it is substantially more expensive than assumed, and the investment decision depends on a criticality analysis due in Q4 2026. The project's section 25 environmental permit is expected at the end of 2026.
Why the rebuild matters
HOFOR supplied 54.1 million m3 of water in 2025 through 2,119 km of pipes, and reported a supply buffer of 11% against the 20–30% it describes as desired. By the end of 2025, HOFOR said, it was halfway through modernizing its 8 waterworks, work it says will raise supply security.
The cost on the bill
New waterworks are among the drivers HOFOR gives for Copenhagen's 2026 price rise. Copenhagen Municipality's tariff annex of 2 February 2026 reports a 41% rise in the drinking water price and names water softening at 2 plants, established in 2024, as a major cost.
Why the 2026 Copenhagen price is given as DKK 49.57 by HOFOR and DKK 54.93 by the municipality, which bodies decide tariffs and revenue caps, and which cloudburst and wastewater projects have slipped are examined in the full report. The full report, Water Systems Overview: HOFOR, is available for USD 499. For a free overview, read the HOFOR Utility Snapshot.