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Access to the WIWIB API is limited to the regional water authorities in the Netherlands and can be requested from the Waterschapshuis Water (HWH) by sending an e-mail to Arnaud MensenWouter Bakker. Please list the following items in your e-mail

• Organisation name
• Contact person and contact details (e-mail and telephone number).
• List with IP addresses that require access to the API.  
• Short explanation of intended use:
  • Systems to be connected to the API
  • Required data sources
  • Expected data request per time interval.

HWH will forward the required information to the WIWB back-office operated by HydroLogic. Your account will be configured within 5 days after the request was received by the WIWB back office.

More info about WIWB at HWH can be found here.

Technical instructions about the WIWB API can be found in the attached document (V5.0)