Boil-water advice in the event of drinking water contamination: providing information quickly and clearly
In the event of drinking water contamination, everyone needs to know straight away that the water must be boiled. CrisisRadar helps water companies, local authorities and the National Institute for Public Health and the Environment (GGD) to communicate a boil-water advisory clearly and widely.
What happens
An inspection has revealed that the drinking water in part of the network area is contaminated with bacteria. Residents must not drink the water straight away. It must be boiled first. Many people are not yet aware of this and are simply using the water as normal.
The water company must issue a boil-water notice as soon as possible and explain exactly what residents need to do. Particular care must be taken to reach vulnerable groups, care homes and the hospitality sector. The local council and the ‘GGD’ (Water Safety Network) want to convey the same message, so that there is no confusion about what is safe.
From alert to clear communication
At-a-glance overview
Track the affected area, reports and measurement results in a single crisis overview.
Quick cooking tips
Send clear cooking advice to residents via all channels in a matter of seconds.
Reach out to vulnerable groups
Provide targeted and timely information to the healthcare sector, the hospitality industry and vulnerable residents.
See it in practice
A brief walkthrough of a boil-water advisory crisis in CrisisRadar: from the situational picture and the facts to the response plan and the public status page.
How this scenario looks in CrisisRadar
Real screens from a boil-water advisory crisis in CrisisRadar: from situational assessment to public communication, all based on the same information.
One situational picture for the entire team
Title, status, phase and the key message in a single overview. Everyone works with the same information, no scattered chat messages and emails.
Recording and weighing the facts
Confirmed and uncertain facts with their source and sensitivity, so that decisions rest on accurate information.
Roles, permissions and external parties
Your own emergency response team plus external guests such as the GGD and the ILT, with secure, temporary access to only what you share.
Response plan by phase
The boil-water advisory response plan with steps for each crisis phase: from detection and sampling to lifting the advisory after two clean samples.
One message to all audiences
A key message, a targeted message to care institutions and a Q&A, ready to share through all your channels.
Public status page
Residents follow the current status and the recommended actions on your own, recognisable page with a unique link.
Ready for your sector's reporting obligations
Drinking water companies are an essential entity under the Cybersecurity Act (NIS2) and the Critical Entities Resilience Act. CrisisRadar helps you make the right report on time and record everything.
Cybersecurity Act (NIS2)
Report a cyber incident to the NCSC: early warning within 24 hours, notification within 72 hours, final report within 1 month. Supervised by the ILT.
Critical Entities Resilience Act (CER)
Since 15 August 2026: alongside cyber, also the physical and all-hazards resilience of critical entities (sabotage, natural disasters, outages). Carry out a risk assessment, take resilience measures and report a significant disruption of the drinking water supply within 24 hours to the competent authority.
Drinking Water Act
Report an exceedance of quality standards to the ILT; for legionella at priority locations, within 48 hours.
Reporting-deadline timers
CrisisRadar starts the clock and tracks which report is due when and to whom, so that you never miss a deadline.
Who collaborates in this scenario
CrisisRadar brings all the parties involved into line, with a single shared situational picture.
- Residents are kept informed quickly and clearly about the cooking advice
- Targeted support for vulnerable groups
- Less confusion thanks to a single, clear message
- Water company, local authority and GGD all use the same information
Well prepared for this scenario?
In a short demo we show you how CrisisRadar helps, from preparation to the first minute of the crisis.