# Oil tank liability insurance in Germany: liability without a ceiling > If you run a heating oil tank in Germany, section 89 of the Federal Water Act (WHG) makes you liable for any water pollution it causes, without fault and without an upper limit. Personal liability insurance often leaves larger tanks out. Oil tank liability insurance, called Gewässerschadenhaftpflicht, closes that gap, for a tank in the basement as well as one buried in the garden. Quelle/Source: https://www.nammert.com/en/insurance-broker-oil-tank-liability.php Updated: 2026-10-31 ## Do I need separate insurance for my oil tank? Usually yes. It is not compulsory, but under section 89 WHG the operator of a tank is liable for pollution of groundwater and surface water regardless of fault and without limit. Many personal liability policies cover only small containers; some include above ground tanks up to roughly 3,000 to 5,000 litres. Underground tanks and larger systems nearly always need a policy of their own. Check the wording of your personal liability policy first. ## At a glance - **Compulsory:** no, but liability is unlimited - **Legal basis:** section 89 WHG, inspection duties under the AwSV ordinance - **Guide price:** 3,000 l above ground from about 20 € a year, Finanztest 8/2024 - **Cover amount:** 2 to 50 million € on the market, good policies well above 5 million € - **Underground tank checks:** every 5 years, more often in water protection zones ## Section 89 WHG: why your own conduct hardly matters The German Federal Water Act distinguishes two cases. Whoever puts substances into water is liable for that act. Whoever operates an installation from which substances escape into water is liable as its operator, even without any fault. A heating oil tank is such an installation. If it corrodes unnoticed or a pipe bursts during delivery, you answer for the consequences. Groundwater counts as water under the Act. A few litres of oil in the soil can trigger a clean up, and if the local water supplier has to close a well, the bill comes to you. There is no legal ceiling on these costs, and remediation easily reaches six figures. ## Above ground or buried: what the difference means Tanks in a basement usually sit in a bunded room or have double walls, so a leak shows early. Buried tanks are harder to watch, and a leak often reaches the soil before anyone notices. That is why they cost more to insure and why the AwSV ordinance requires them to be inspected by an expert, as a rule every five years and more often in water protection zones. For above ground tanks the inspection duty depends on size and location; the lower water authority of your district (untere Wasserbehörde) can tell you which intervals apply. Flood zones carry extra requirements because a tank can float and leak in high water. Keep the inspection reports with your policy documents, since missed inspections can lead to disputes with the insurer. ## What matters in the small print The consumer magazine Finanztest compared policies without a general deductible in issue 8/2024. Cover amounts ranged from 2 to 50 million euros, and premiums for the same tank differed several times over. Price says little about quality. Three points matter most: damage to your own property, meaning soil and walls, even before groundwater is at risk; emergency costs paid to prevent an imminent loss; and no cuts for minor lapses. No liability policy replaces the tank itself. ## What is covered - Compensation to third parties when heating oil pollutes groundwater, wells or watercourses - Clean up of soil and groundwater ordered by the authorities - Emergency costs to prevent an imminent loss - Damage to your own land, such as soil and walls, depending on the policy - Defence against unjustified claims, including in court - Spills during delivery, where you are liable as the operator - Oil damage after a flood, depending on the policy ## What is not covered - The tank itself, its pipes and the repair of the system - Deliberate breaches of inspection and maintenance duties - Gradual damage, where the policy excludes it - Commercial installations that have not been declared - Tanks larger than stated in the policy - Fines and penalties ## Who needs it - Every owner of a buried tank, whatever its size - Owners of an above ground tank that personal liability does not include - Landlords who run oil heating for their tenants - Owners' associations with a shared tank - Owners of a decommissioned tank that still holds residual oil ## Who does not need it - People who only store small containers, such as a can for the lawnmower: personal liability usually covers that - Owners whose tank has been cleaned and properly decommissioned ## What it costs Oil tank liability insurance is inexpensive, but prices vary widely between insurers. Buried tanks cost more than above ground ones, large tanks more than small ones. | Example | Typical range | | --- | --- | | Above ground tank, 3,000 litres | about 20 to over 90 € a year | | Tank holding 10,000 litres | about 29 to 191 € a year | **What drives the premium:** - Capacity in litres - Location: inside the building, outdoors or underground - Construction, such as double walls or a drip tray - Cover amount and deductible - Extras such as damage to your own land _Ranges from the Finanztest comparison, issue 8/2024, for policies without a general deductible. Your premium is fixed only in the quote._ ## The policy levels on the market - **Basic:** Cover in the low millions, damage to your own land only when groundwater is at risk. A floor for small above ground tanks. - **Standard:** Several million euros, emergency costs and damage to soil and walls included. Suits most oil heating systems. - **Premium:** High cover, flood included, no cuts for minor lapses, several tanks in one policy. For buried tanks and large systems. ## How to recognise a good policy | Criterion | Minimum standard | Strong policy | Why it matters | | --- | --- | --- | --- | | Cover amount | 2 million € | 10 million € or more | Liability under section 89 WHG has no limit, and wells and soil clean up quickly cost six figures. | | Damage to your own land | only if groundwater is at risk | soil and walls always included | The most common loss hits your own basement and garden first. | | Emergency costs | after the loss has occurred | also to prevent an imminent loss | Pumping out early prevents the big loss, and you should not pay for that yourself. | | Deductible | 250 € or more | none | Even a small spill in the basement means disposal and an expert's fee. | | Flood | excluded | included | Floating tanks are a typical cause of loss in floods. | | Inspection duties | benefit cut for any lapse | cut only for gross negligence | A missed deadline should not cost you all of your cover. | | Several tanks | one tank per policy | all tanks on the property up to the stated total | Battery tanks and extra containers otherwise slip through. | ## Insurers on the German market Many German property insurers offer oil tank liability as a policy of its own or as an add-on to personal or property owner's liability. We include direct insurers that do not work with brokers so you know the market. - **Haftpflichtkasse**: mutual insurer specialised in liability, sells through brokers - **VHV**: broker-focused insurer with a wide liability range - **Allianz**: agents and brokers - **ERGO**: agents and brokers - **R+V**: cooperative group, sells through cooperative banks - **Zurich**: agents and brokers - **Gothaer**: agents and brokers - **InterRisk**: broker insurer, part of Vienna Insurance Group - **SV SparkassenVersicherung**: public insurer in south west Germany, sells through savings banks - **HUK-COBURG**: sells through its own network, does not work with brokers 127 insurers supervised by BaFin, the German regulator, are licensed for this class of insurance. (Allgemeine Haftpflicht). Source: BaFin company database, 2026-09-18; EU insurers without a German office excluded. ## Typical claims and who pays - **Tank corrodes, oil in groundwater** (five to six figures for clean up and experts): The classic case under section 89 WHG. Every oil tank liability policy pays up to its limit. - **Pipe leaks into your own basement** (four to five figures for disposal and repair): If groundwater is not yet at risk, weak policies often refuse. Good ones always include damage to soil and walls. - **Tank overfilled during delivery** (four to five figures): You are liable to third parties as the operator. Your insurer pays and recovers from the supplier if the supplier was at fault. - **Flood lifts the tank** (five to six figures, next door too): Some basic policies exclude flood. Strong ones include it, but the duties in a flood zone still apply. - **Pumping out before the loss** (about three to four figures): Good policies expressly pay emergency costs incurred before the actual loss. Acting early prevents the big clean up. - **New tank after the leak** (four to five figures): No liability policy replaces the installation itself. The tank, pipes and repair are your cost. ## Myth or truth - „If I did nothing wrong, I am not liable for leaked heating oil." ✘ False: under section 89 WHG the operator of an installation is liable without fault. It is enough that the oil came from your tank. - „Personal liability insurance is enough for a buried tank." ✘ Almost never: personal liability policies include, if anything, above ground tanks up to a set capacity. Buried tanks need their own policy. - „The groundwater under my land counts as water under the law." ✔ True: the Federal Water Act also protects groundwater. That is why a leak into the soil is already water damage in the legal sense. - „Oil tank insurance is expensive." ✘ Not necessarily: Finanztest found policies from about 20 euros a year for an above ground 3,000 litre tank. Buried tanks and large systems cost more. - „An empty, cleaned and decommissioned tank no longer needs insurance." ✔ True: no oil, no water damage. What counts is proof of proper decommissioning; residual oil in the tank is still a risk. ## Common mistakes - Assuming personal liability covers the tank without checking capacity and type - Not reporting a new tank size after replacing the tank - Letting AwSV inspection deadlines pass - Leaving a decommissioned tank with residual oil uninsured - Forgetting the oil tank when buying a house - Looking only at price and leaving damage to your own land excluded ## FAQ ### Is oil tank liability insurance compulsory in Germany? No, there is no legal duty to insure. Because the operator is liable under section 89 WHG without fault and without limit, it is still regarded as essential for any tank that personal liability does not include. ### What does oil tank insurance cost? Finanztest (issue 8/2024) found premiums from about 20 euros a year for an above ground 3,000 litre tank, with expensive policies above 90 euros. For 10,000 litres the range was 29 to 191 euros. Buried tanks cost more. ### Does my personal liability policy cover the tank? It depends on the policy. Many cover only small containers, some include above ground tanks up to roughly 3,000 to 5,000 litres. Buried tanks are almost never included. The policy wording decides. ### Who pays if oil spills during delivery? The supplier is liable if it made a mistake. Towards third parties, however, you remain liable as the operator under section 89 WHG. Your insurer settles and then recovers the money from the supplier. ### Will the insurer pay for a new tank? No. Liability insurance pays for damage to soil, water and other people's property, not for the installation itself. Replacing the tank is your cost. ### How often must my tank be inspected? Under the AwSV ordinance buried tanks generally need an expert inspection every five years, more often in water protection zones. For above ground tanks it depends on size and location. The lower water authority of your district gives binding answers. ### Do I need to insure a decommissioned tank? As long as it still holds oil, yes. Only a tank that has been cleaned and properly decommissioned no longer poses a risk. Keep the proof of decommissioning. ### What changes if I switch to a heat pump? The risk remains until the old tank is empty, cleaned and decommissioned. Cancel the policy only then and send the insurer the proof. ### Why use a broker? Policies differ a lot in cover amount, damage to your own land and emergency costs, while prices are close. We also check whether your personal liability already includes the tank. The insurer pays our fee. ## Legal basis and sources - [Insurance Contract Act (VVG, German)](https://www.gesetze-im-internet.de/vvg_2008/) - [BaFin company database (licensed insurers)](https://portal.mvp.bafin.de/database/InstInfo/) ## Request quotes We obtain quotes and come back with a comparison, free of charge. You can write in English. https://www.nammert.com/en/insurance-broker-oil-tank-liability.php#anfrage --- Your broker: Norman Nammert, trading as NAMMERT. Insurance broker licensed under section 34d(1) of the German Trade Regulation Act. Broker register no. D-C08Q-TOSD4-37. NAMMERT Assekuradeur GmbH is a separate company. It does not arrange your contract. NAMMERT Assekuradeur GmbH, Karl-Marx-Straße 4, 15711 Königs Wusterhausen, +49 3375 29 12 77, info@nammert.com. Wikidata: Q141141479.