Replacing lead pipes – Important information for property owners

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Today we're talking about drinking water regulations and the replacement of lead pipes in private and commercial properties.

Lead pipes are an often underestimated risk in older buildings. Many houses in Kiel, especially those built before 1973, still contain lead pipes. These pipes must be completely replaced or decommissioned by January 12, 2026, at the latest, in accordance with the Drinking Water Ordinance.

Why the replacement of lead pipes is necessary

1. Health risk

Lead can leach out of old pipes and enter the drinking water. Long-term exposure to lead can lead to gradual poisoning, which is particularly dangerous for children, pregnant women, and women of childbearing age.

2. Legal requirement

The Drinking Water Ordinance requires all owners to take measures to ensure the quality of drinking water. Anyone who fails to meet these deadlines is acting illegally and risks fines or liability issues.

3. High lead concentration

Lead pipes generally do not comply with the limit value of 10 µg/l (micrograms per liter). From January 12, 2028, the limit value will be tightened to 5 µg/l, which further increases the urgency of replacement.

Who is affected?

• All property owners: The obligation applies to the entire drinking water system, including branch pipes, mixing installations, or individual sections made of lead.
• Landlords: They are legally responsible for replacing the pipes. In this case, tenants must contact their landlord.
• Property managers and real estate companies: They are also responsible, as they act on behalf of the owners.

How to proceed

1. Check: Determine whether your building contains lead pipes. These are often houses built before 1973.
2. Contact a specialist company: Hire a certified plumber to assess the situation, provide advice, and prepare a quote.
3. Replacement or decommissioning: Depending on the structural situation, the pipes will be replaced with copper, stainless steel, or plastic, or decommissioned.
4. Notification: After replacement, the process must be reported to the responsible health department.

Deadlines at a glance

• January 12, 2026: Deadline for the complete replacement or decommissioning of lead pipes.
• January 12, 2028: Tightening of the limit value to 5 µg/l, therefore early replacement is advisable.

Support and funding opportunities

• Kiel Health Authority: Advice on risks, exceptions, and deadline extensions.
• Regional funding programs: Many cities and municipalities offer financial support for the replacement of lead pipes.
• Water suppliers: Local water suppliers provide information on water quality and recommendations for replacement.

Tips for property owners in Kiel

• Act early: Plan the replacement in good time to avoid bottlenecks at specialist companies.
• Check subsidies: Many programs cover up to 30–50% of the costs.
• Compare specialist companies: Obtain several quotes to optimize costs, materials, and schedules.
• Documentation: Keep all invoices, test reports, and notifications to the health department in a safe place.

FAQ – Frequently asked questions about lead pipes

Q: Are all lead pipes affected?
A: Yes, both main pipes and branch pipes, mixed installations, or individual sections made of lead must be replaced.

Q: Who bears the costs?
A: In principle, the owner. Landlords are responsible for their properties, tenants are not.

Q: Are there any exceptions to the deadline?
A: An extension of the deadline is only possible in exceptional cases and must be approved by the health department, especially for households with minors or pregnant women.

Q: What materials are permitted?
A: Copper, stainless steel, or special plastics for drinking water pipes are common.

Note: Replace lead pipes – for health and value retention

Replacing lead pipes is not only a legal obligation, but also protects the health of residents and the value of your property in Kiel. Plan ahead, find out about subsidies, and hire qualified specialists.

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