The document details the tax collection business case developed by the water authority HHNK, focusing on objectives, success factors, and results that benefit residents, employees, and the organization. Key improvements in efficiency, transparency, and usability led to significant cost savings and awards for digital service maturity. HHNK's innovation strategies include integrating applications and enhancing data security through a robust IT infrastructure.

1. The win-win-win case
Water Authority HHNK
Michel Zwart MSc.
René Wiersma MSc. MBA

2. Structure
• Introduction
• Business case: Tax collection
– objectives
– success factors
– results, the 3 wins
• How HHNK continues innovating with WSO2
• Questions and answers
2

3. Introduction
3

4. Introduction
René Wiermsa MSc. MBA
• Enterprise Architect at Yenlo
• Email rene.wiersma@yenlo.com
• LinkedIn profile
https://nl.linkedin.com/in/rené-wiers
ma-71062a
Michel Zwart MSc.
• Information Architect at HHNK
• Email m.zwart@hhnk.nl
• LinkedIn profile
https://www.linkedin.com/in/mz2009
1970/
4

5. We’d like to thank
• Robert Hauwert, project leader Digital Front Office HHNK
• Evert Karregat, cluster manager Taxes HHNK
• Arno Smit, information manager HHNK
• Ruben van der Zwan, CEO Yenlo
• Tamara de Lange, marketing & training coordinator Yenlo
• Hans Bot, enterprise architect Yenlo
5

6. Introduction water authorities
6
• Excavation of peat realizing farmland
• Lowering grounds
• Building of dykes and damms
• Origination of water authorities through collaboration
(13th century)
• Flood of 1916 leading to centralized water
management
A long, long time ago

7. Introduction water authorities
7
Working on……water safety
Dyke reinforcement, maintenance
(asset management) and inspection

8. Introduction water authorities
8
Working on……sufficient water
Water storage( buffers)
Dredging
Maintenance
Maintenance inspection
Level regulation
Pumping

9. Introduction water authorities
9
Working on……clean water
Sewage purification

10. Introduction water authorities
10
Working on……road safety
Maintaining roads
Mowing berms
Maintaining signage
De-icing

11. Introduction water authorities
11
Crisis organization
Crisis management

12. Introduction water authority HHNK
12
Water management area: 488,033 acre

13. Introduction water authority HHNK
13
Clients and partners
• 1,200,000 residents
• 30,000 companies
• 33 towns/communities
Water control assets
• 31 miles of dunes
• 1,000 miles of dikes
• 17,771 miles of canals and ditches
• 3,500 infrastructural assets
Water management area: 488,033 acre

14. Tax collection
14
Tax income 2017 (budgetted)
• Water safety / sufficient water
• Water purification
• Road Safety
(amounts in 1,000,000 euros)
122,2
79,2
15,3

15. Business case tax collection
What could be improved?

16. Reengineering tax collection
16
How can we help?

17. Tax collection - objectives
17
What could be improved?
Increased
processing
efficiency
Transparency for
residents and
companies
Usability for
residents and
companies

18. Business case tax collection
How did we do it?

19. Tax collection – success factors
19
How did we realize our improvements?
• IT vision
• IT integration principles
• Scrum
• Web oriented

20. IT vision
20
Digital transformation
• Federal Policy
• Service vision
Service Oriented Architecture
• Integrated digital
services
• Flexibility
(best-of-breed)
• Performance
• Reusability

21. IT integration principles
21
Principles
• Straight through processing
• Separation of concerns
• Decoupling and reusablity
• Canonical datamodel

22. Architecture realized
Service implementation
22

23. Business case tax collection
What are the results?

24. Results
24
What are the wins?
• Wins for our residents
• Wins for our employees
• Wins for HHNK

25. Transparency:
Online
statement of
account
Usability:
Direct access
to digital
services
What are the wins?
25
RESIDENTS

26. What are the wins?
26
Award for:
• 100% digital availability of services 2016
• 100% digital maturity level 2016
• Providing the right mindset
EMPLOYEES

27. What are the wins?
27
HHNK
On the average 25%
less calls regarding taxes
€ 40,000 / yr savings

28. What are the wins?
28
HHNK
Internal resource cut by 11%
and…
€ 350,000 savings/yr on hiring

29. What are the wins?
29
HHNK
• Reduction of banking costs by € 110,000
• 50% faster remission treatment
• Raise in data quality by working 100% digital
• Total cost reduction of € 400,000 - € 600,000 / yr

30. Business case Tax Collection
30
• Total initial investments € 460,000
• Yearly costs € 60,000
• Yearly average cost reduction € 500,000
• Pay-off time 1,1 year
Financial summary

31. How HHNK continues
innovating with WS02

32. Continuing innovation
32
Examples
• Plugging in more applications
• Creation and reuse of business application services
• Introduction of API manager
• Exposing data
• Align with the federal open data initiative
• Security improvement

33. HHNK ESB Infrastructure
33
Intranet
Application Server
Internet
Enterprise Integrator
Messaging
Back-Office Applications
Data Access
Management
Monitoring Tools
CI/CD
Developer Tools
ReST APISOAP Webservice

34. HHNK ESB Infrastructure
34

35. Questions
35