Water authority/Midden (rivieren)· Houten

Hoogheemraadschap De Stichtse Rijnlanden

HDSR

Utrecht-stad + rondom. Oude Hollandse waterlinie (UNESCO), Kromme Rijn, diepe polders bij Lopik.

hdsr.nl ↗Residents of Utrecht (zuid) + kleine delen Zuid-Holland + Gelderland

/ 02 — Key figures

Residents

850.000

Area

900km²

Annual budget

€ 155,0 mln

FTE

330

15 treatment plants

Budget per resident

€ 182

incl. water-system levy

Budget per km²

€ 172 dzd

management density

Budget per FTE

€ 470 dzd

labour intensity

/ 03 — Tasks & funding

Water safety

Primary flood defences (dykes along the sea, rivers, IJsselmeer) plus regional defences. Tested every 12 years under the Water Act. High Water Protection Programme co-financing via the Delta Fund.

Water quality + treatment

15 sewage treatment plants — domestic and industrial wastewater is treated. EU Water Framework Directive.

Own taxes

Water-system levy (residents + landowners/nature) + treatment levy (households) + pollution levy (companies). Own board (general + executive) via direct elections — held alongside Provincial Council elections.

/ Other water authorities in Midden (rivieren)

Apeldoorn

Waterschap Vallei en Veluwe

Veluwe + Gelderse Vallei + Eemvallei. Unieke mix van hoge zandgrond + diepe polders aan de Randmeren.

1100k

residents

Tiel

Waterschap Rivierenland

Rivierenland — Betuwe, Bommelerwaard, Alblasserwaard. ~600 km dijken langs Waal, Rijn, Maas, Lek.

1000k

residents

Lelystad

Waterschap Zuiderzeeland

Enige waterschap dat één provincie (Flevoland) dekt — polders uit IJsselmeer (1957-1968).

440k

residents

/ Sources

Water authority: hdsr.nl ↗— annual report + budget.

Umbrella body: Union of Water Authorities (Unie van Waterschappen)— interest representation + HWBP co-financing.