This is an action on an insurance policy in which plaintiff alleges that defendant, its insurer, breached its obligation to provide coverage for plaintiffs pollution cleanup costs. The trial court granted judgment for plaintiff, and defendant appeals. We affirm.
In 1952, plaintiff purchased and occupied a parcel of land in Eugene. Thereafter, it installed two underground storage tanks, one of which was used to store gasoline. Plaintiff sold the property to another party in 1986 but continued to occupy it as a lessee until 1988. In 1988, it removed the tanks from the property and discovered a leak in the gasoline tank. An inspection by an engineer revealed that fuel had entered the ground water.1 Plaintiff incurred cleanup costs because of the contamination and sought coverage under its policy with defendant for those expenses. In a trial to the court, the court made findings of fact and conclusion of law and entered judgment in plaintiffs favor.
The policy provides, in part:
“[Defendant] will pay on behalf of the policyholder all sums, * * * which the policyholder shall become legally obligated to pay as damages because of * * * property damage, to which this insurance applies, caused by an occurrence. * * *
“D. EXCLUSIONS
“This insurance does not apply:
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“4. To damage to property owned, used or otherwise in the physical control of an insured * * *.
“DEFINITIONS APPLYING TO THIS POLICY
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*159“Occurrence - An accident occurring within the policy period, including continuous or repeated exposure to conditions, which results in Personal Injury or Property Damage neither expected or [sic] intended from the standpoint of the insured.
tt%i # jf: if:
“Property damage - Physical injury to or destruction of tangible property including loss of use thereof* * *.”2 (Boldface in original.)
Defendant makes three assignments of error. First, it argues that an “occurrence” under the policy did not happen. It asserts that the trial court erred in finding that the leek was accidental and neither expected nor intended by plaintiff. Because those findings are equivalent to a jury verdict, we are not at liberty to overturn them if they are supported by any evidence. ORCP 62F; ORS 19.125; Aetna Casualty and Surety Co. v. Brathwaite, 90 Or App 109, 117, 751 P2d 237, rev den 305 Or 672 (1988).
The policy defines an “occurrence” as an “accident” that results in either personal injury or property damage that is “neither expected nor intended from the standpoint of the insured.” (Emphasis supplied.) Defendant asserts that whether plaintiff “expected” the damage requires a determination of whether it knew or should have known that damage was likely to occur. See Albertson’s Inc. v. Great Southwest Fire Ins. Co., 83 Or App 527, 531, 732 P2d 916, rev den 303 Or 332 (1987). The parties stipulated that plaintiff had no actual knowledge of the leak. Defendant argues that plaintiff should have known of the damage, because the tank had been in the ground more than 30 years when the leak was discovered and because underground fuel tanks generally have a life expectancy of approximately 15 years.
Plaintiff refers us to this testimony:
“Q. Can you estimate the life expectancy of a metal [tank] in general, holding gasoline?
<<* * * * *
“A. Gross estimate, 15 years, but it can range significantly from that.
*160“Q. Higher and lower?
“A. Uh-huh.
“Q. What are the factors that are involved in that range?
‘ ‘A. Whether the groundwater intercepts the tank, rainfall, soil materials the tank is in contact with, stray electrical currents. There’s a number of things that can affect the life • expectancy of metal.”
The witness also testified that nothing at the site led him to believe that plaintiff could have detected the leak before the tank was removed. Further, a Department of Environmental Quality official testified that he had observed properly-installed tanks in perfect condition after 20 to 30 years of in-ground service. In the light of that testimony, there is evidence to support the trial court’s finding that the damage caused by the leak was not expected by plaintiff.
Defendant next assigns error to the trial court’s conclusion that plaintiff’s clean-up costs were “property damages.” It argues that the contamination of the ground water surrounding the tank was not physical injury to tangible property within the meaning of the policy.3 Interpretation of unambiguous language in an insurance policy is a question of law. Timberline Equip. v. St. Paul Fire and Mar. Ins., 281 Or 639, 643, 576 P2d 1244 (1978). A policy is to be construed according to its character, its purpose and the meaning that the insured would suppose it to have. Shadbolt v. Farmers Insur. Exch., 275 Or 407, 551 P2d 478 (1976). Its language is to be given a plain and ordinary meaning. Mortgage Bancorp v. New Hampshire Ins. Co., 67 Or App 261, 677 P2d 726, rev den 297 Or 339 (1984). Ground water is tangible property. When it is contaminated, its quality is injured *161physically and is “damaged.” We hold that, under the plain meaning of defendant’s policy, the contamination of ground water was “property damage.”
Finally, defendant assigns error to the trial court’s finding that the ground water was not in plaintiffs control. The policy excludes damage to property “owned, used or otherwise in the physical control of the insured.” All water within this state, which necessarily includes ground water, belongs to the public. See ORS 537.110; Green v. Wheeler, 254 Or 424, 458 P2d 938 (1969), cert den 397 US 990 (1970). Additionally, the right to control ground water belongs to the public. ORS 537.525(1). Although ground water is subject to appropriation,4 there is no evidence that plaintiff or anyone else made any attempt, lawful or otherwise, to appropriate the ground water. Therefore, there is evidence to support the trial court’s finding that plaintiff did not own, use or otherwise control the contaminated ground water.
Affirmed.