NIS2 Compliance for Wastewater in Croatia
Wastewater collection, treatment and discharge operators are covered under NIS2 Annex I. Disruption of wastewater systems can cause environmental and public health emergencies.
Reporting to National Cybersecurity Authority (NSA) / SOA
Wastewater entities in Croatia report significant cybersecurity incidents to CARNET-CERT, operating under National Cybersecurity Authority (NSA) / SOA. The NIS2 Article 23 timeline applies:
- 24 h Early warning — notify CARNET-CERT
- 72 h Formal incident notification with initial assessment
- 1 month Final incident report with root cause and remediation
Key cyber risks for Wastewater in Croatia
- ▸Ransomware targeting treatment plant control systems
- ▸Manipulation of discharge-level monitoring
- ▸Unauthorised remote access to OT networks
Key NIS2 obligations for Wastewater entities
- ✓Secure remote access controls for OT
- ✓72-hour incident notification
- ✓Continuous monitoring of control system integrity
- ✓Vulnerability management for industrial software
Example in-scope organisations
- ·Municipal wastewater treatment plants
- ·Sewerage network operators
- ·Industrial wastewater treatment facilities
Is your Wastewater organisation in scope in Croatia?
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Run the free NIS2 scope check →Frequently asked questions
Is my Wastewater organisation in scope for NIS2 in Croatia?
Yes — if you are a medium or large organisation. In Croatia, Wastewater is a NIS2 Annex I sector. Large organisations are Essential Entities; medium organisations are Important Entities. NIS2 transposed via the Croatian Cybersecurity Act (2024); NSA and SOA share supervisory duties. Use our free scope checker for a personalised result.
Who do I report NIS2 incidents to in Croatia as a Wastewater entity?
Report significant incidents to CARNET-CERT (National Cybersecurity Authority (NSA) / SOA). You must submit an early warning within 24 hours, a detailed notification within 72 hours, and a final report within one month — per NIS2 Article 23.
What security measures must Wastewater organisations implement under NIS2 in Croatia?
Under NIS2 Article 21, organisations must implement risk-proportionate security measures including: Secure remote access controls for OT; 72-hour incident notification; Continuous monitoring of control system integrity. Additional requirements may apply under Croatia's national transposition.
What are the NIS2 fines for Wastewater organisations in Croatia?
Essential Entities face fines up to €10 million or 2% of global annual turnover under NIS2 Article 34. Croatia's national transposition may set specific enforcement priorities and fine scales.
Related sectors in Croatia
For decision-support purposes only. Exact scope depends on Croatia's national transposition of NIS2 — verify obligations with a qualified expert.