Noorderzijlvest

Waterschap Noorderzijlvest (WNZV) is a Dutch regional water authority covering the provinces of Groningen, Friesland, and Drenthe. It has its seat in the city of Groningen. It is responsible for water management, water quality and sewage water treatment in its catchment area.

Waterschap Noorderzijlvest
Flag Coat of arms
Map of the Dutch water boards (2019). Noorderzijlvest is indicated with a 1.
Country	Netherlands
Province	Groningen, Friesland, Drenthe
Seat (waterschapshuis)	Groningen
Government
• Dijkgraaf	Bert Middel[1]
Area [2]
• Total	1,440 km2 (560 sq mi)
Time zone	UTC+1
• Summer (DST)	UTC+2
Website	www.noorderzijlvest.nl

Like many of the present water boards in the Netherlands, WNZV was created through a series of mergers of smaller regional boards over centuries. The documented history of these smaller boards and the dike rights that preceded them goes as far back as 1408.^[3]

The present WNZV was created in the year 2000 from the merger of Water Board Noorderzijlvest, Zuiveringschap Drenthe and the Service Purification Management of Groningen province.^[4][3]