We granted the defendant’s application for further appellate review in this case to decide whether the plaintiffs are entitled to coverage under their homeowner’s insurance policy issued by the defendant for damages incurred when home heating oil migrated onto the plaintiffs’ property after the oil was negligently spilled at a neighbor’s house. 2 We conclude that the policy covered the event.
The case arose through the plaintiffs’ action in the Superior Court seeking a declaration that they were entitled to coverage under the defendant’s policy for their damages. In connection with the action, the plaintiffs and the defendant stipulated to the material facts. Those facts are set forth in the Appeals Court opinion,
“One or more of the following events then took place: (1) the previous owners of 26 Cedar Drive either (a) negligently failed properly to remove or seal the disconnected fuel oil delivery line that led into the basement, or (b) negligently removed or altered the seal on the disconnected fuel delivery line; or (2) the current owners of 26 Cedar Drive negligently failed to direct delivery of heating oil into the correct fuel delivery line; or (3) an oil delivery company, making a delivery for the current owners, negligently failed to determine whether the fuel delivery line into which it delivered oil was properly attached to a fuel storage tank at 26 Cedar Drive.
*26 “As a result of one or more of the above negligent acts, approximately 500 gallons of fuel oil was pumped through the disconnected fuel delivery line into the basement of the home at 26 Cedar Drive through the disconnected fuel delivery line. The oil then seeped out of the basement and migrated underground to the plaintiffs’ property. It contaminated the plaintiffs’ well and caused other damage to the plaintiffs’ property.”
Based on these facts, the parties filed cross motions for summary judgment. The plaintiffs contended that their damages were caused by the negligence of others for which the defendant’s policy provides coverage. The defendant maintained that the damages were subject to a provision in the policy which excluded from coverage “loss . . . caused by . . . release, discharge or dispersal of contaminants or pollutants.” A judge in the Superior Court granted the plaintiffs’ motion for summary judgment, and an amended judgment entered which declared that the plaintiffs were entitled to coverage and payment under the policy.
The Superior Court judge relied on the decision in
Standard Elec. Supply Co.
v.
Norfolk & Dedham Mut. Fire Ins. Co.,
The principle quoted above is based on a test which has long been used by this court to resolve coverage controversies in chain causation cases. That test seeks to determine the efficient proximate cause of the loss. If that cause is an insured risk, there will be coverage even though the final form of the property damage, produced by a series of related events, appears to take the loss outside of the terms of the policy. The decision in
Lynn Gas & Elec. Co.
v.
Meriden Fire Ins. Co.,
Three decisions furnish examples of our application of the train of events test to coverage disputes in first-person insurance cases. In Lynn Gas & Elec. Co., supra, coverage was found for damaged machinery under a fire insurance policy, where a minor fire caused a short circuit in electrical wiring, which affected an electric dynamo. This, in turn, resulted in damage to machinery connected by belts and pulleys to the dynamo, some of which disintegrated. Damage then resulted to yet other pieces of equipment, none of which had been touched by the fire itself. This court held the fire to be the proximate cause of the loss in accordance with the causation test stated therein, and permitted recovery. Id. at 577.
*28
In
Jiannetti
v.
National Fire Ins. Co.,
In
Barnett
v.
John Hancock Mut. Life Ins. Co.,
The law in other jurisdictions generally is in accord with the
Standard Elec. Supply Co.
case and our case law. See
Sabella
v.
Wisler,
The defendant’s contention that the proximate cause of the plaintiffs’ loss was the release of oil which is an excluded event cannot be accepted in view of the stipulation which establishes that the pumping of oil into the wrong line occurred “as a result of’ one or more negligent acts, thereby setting off a stipulated chain of events which concluded with damage to the plaintiffs’ property. The stipulation clearly separates the acts of negligence from the release of the oil.
The other arguments of the defendant seeking exclusion of the loss under the “acts and decisions” and “faulty design” provisions of the policy were considered and rejected by the Appeals Court.
We also reject the claim that the public interest will not be served by a decision for the plaintiffs, which will enable insureds to recover despite pollution exclusions in policies, because some negligence almost always can be found in a chain of events leading to loss caused by pollution or contamination to property. It is suggested that, if the plaintiffs’ position is accepted, insurers will be unable to exclude liability in circumstances similar to those presented in this case. The plaintiffs’ policy’s exclusion section has a preamble providing: “We do not insure for loss caused directly or indirectly by any of the following. Such loss is excluded regardless of any *31 other cause or event contributing concurrently or in any sequence to the loss.” If the pollution exclusion had been listed in the general exclusion section, following this preamble, an insured plainly would be foreclosed from invoking the train of events rule of the Standard Elec. Supply Co. case. Additionally, if the defendant intended to exclude liability for physical loss to property from pollution or contamination, however caused, the pollution exclusion clause should have been listed in the general exclusion section. Under the policy as drafted, pollution or contamination caused by an antecedent negligent act is a covered risk. If an insurer desires to eliminate coverage for pollution or contamination caused by a fortuitous negligent act, language accomplishing that purpose, and the means to do so, are readily available.
The amended judgment is affirmed.
So ordered.
Notes
“The opinion of the Appeals Court is reported at
Bettigole
v.
American Employers Ins. Co.,
The defendant also directs our attention to four recent cases interpreting “absolute” or “total” pollution exclusion clauses in commercial liability insurance policies. See
Western World Ins. Co.
v.
Stack Oil, Inc.,
