OPINION
for the Court.
Thеse cases came before the Supreme Court on May 3, 2012, as a consolidated appeal, pursuant to an order directing the parties to appear and show cause why the issues raised should not be summarily decided. After hearing the arguments of counsel and reviеwing the memoranda submitted on behalf of the parties, we are satisfied that cause has not been shown. Accordingly, we shall decide the appeal at this time without further briefing or argument. For the reasons set forth in this opinion, we affirm the judgments of the Superior Court.
I
Facts and Travel
The month of October 2005 saw more rain than any single month in Rhode Island’s recorded history up to that time, totaling in excess of fifteen inches. In particular, the state recorded nearly nine inches of precipitation between the 13th and 15th of that month. At the time, Joseph and Josephine Iozzi (Iozzis or plаintiffs) owned a home located at 91 Amanda Street, Cranston, Rhode Island. On October 15, 2005, this excessive rainfall overwhelmed the sewer system servicing the Iozzis’s home, causing water and sewage to back up and enter their basement, resulting in extensive damage to their home and personal property.
On November 14, 2006, plaintiffs filed suit in Providence County Superior Court, seeking declaratory relief and compensatory damages from Triton Ocean State, LLC (Triton); U.S. Filter Operating Services, Inc. (Veolia);
A
Peerless’s Motion for Summary Judgment
On March 21, 2008, Peerless filed a motion for summary judgment pursuant to Rule 56 of the Superior Court Rules of Civil Procedure, arguing that the language in the homeowner’s policy was clear and unambiguous and excluded coverage for the claims plaintiffs made. In resрonse, plaintiffs filed an objection to Peerless’s motion on April 2, 2008, and a memoran
B
Triton & Veolia’s Motion for Summary Judgment
On June 11, 2009, Triton and Veolia filed a joint motion for summary judgment,
On October 27, 2009, Triton and Veolia filed a motion to dismiss plaintiffs’ notice of appeаl, asserting that it was untimely because it was filed two days after the twenty-day time period pursuant to Rule 4 of the Supreme Court Rules of Appellate Procedure,
With their notice of appeal dismissed, plaintiffs attempted a different approach by questioning the validity of the September 8, 2009 judgment in favor of Triton and Veolia. On November 27, 2009, plaintiffs filed a motion to vacatе the September 8, 2009 judgment, arguing that the prior judgment failed to comport with Rule 54(b) because it did not contain an explicit determination by the justice that there was no just reason for delay. See Teasier v. Ann & Hope Factory Outlet Inc.,
After Triton and Veolia objected, a hearing on the matter was held on December 10, 2009, in which the same Superior Court justice granted plaintiffs’ motion and vacated the September 8, 2009 judgment.
II
Standard of Review
“We review a [Superior Court] justice’s grant of summary judgment in a de novo manner.” Nunes v. Meadowbrook Development Co.,
III
Discussion
A
Triton & Veolia’s Revised Judgment
We will first address plaintiffs’ appeal from the December 15, 2009 judgment in favor of Triton and Veolia. However, before we can address the merits of this appeal, we must first determine whether plaintiffs’ appeal was timely. As briefly mentioned supra, in accordance with Rule 4(a), a notice of appeal must be filed “within twenty (20) days of the date of the entry of the judgment.” It is well settled that “the time specified in Rule 4(a) is mandatory, and that once the prescribed time has passed there can be no review by way of appeal.” Wachovia Bank v. Hershberger,
Here, after the Superior Court justiсe vacated the September 8, 2009 judgment, a new and valid final judgment was entered on December 15, 2009. However, plaintiffs did not file their notice of appeal until January 20, 2010. Because plaintiffs did not file a notice of appeal within twenty days from the date judgment was entered, the аppeal is untimely and is not properly before this Court. “Our appellate jurisdiction may not properly be invoked when an appeal is filed more than twenty days subsequent to the entry of the judgment of which review is being sought.” Wachovia Bank,
Peerless’s Judgment
Moving now to plaintiffs’ appeal of the judgment in favor of Peerless, the issue before us is one of contract interpretation. “This Court reviews a motion justice’s interрretation of an insurance policy de novo.” Metro Properties, Inc. v. National Union Fire Insurance Co. of Pittsburgh, Pa.,
In the case at bar, after the basement of their home was flooded, plaintiffs filed a claim under their homeowner’s policy with Peerless. In a letter dated November 8, 2005, Peerless denied their claim, based in large part on an exclusion in the homeowner’s policy that precluded coverage for losses caused directly or indirectly by water. This provision reads in pertinent part:
“SECTION I — EXCLUSIONS
“1. We do not insure for loss caused directly or indirectly by any of the following. Such loss is excluded regardless of any other cause or event contributing concurrently or in any sequence to the loss.
“c. Water Damage, meaning:
“(1) Flood, surface water, waves, tidal water, overflow of a body of water, or spray from any of these, whether or not driven by wind;
“(2) Water which backs up through sewers or drains or which overflows from a sump; or
“(3) Water below the surfaсe of the ground, including water which exerts pressure on or seeps or leaks through a building, sidewalk, driveway, foundation, swimming pool or other structure.”
After plaintiffs filed suit for breach of contract, Peerless filed a motion for summary judgment, arguing that language in the homeowner’s policy was clear and unambiguous and that it excluded coverage for the claims made by plaintiffs. At a hearing on the motion, a Superior Court justice found the policy language to be clear and unambiguous; and, based on that language, granted Peerless’s motion for summary judgment.
On appeаl, plaintiffs contend that summary judgment in favor of Peerless should not have been granted because the homeowner’s policy is so “technically contradictory, and ambiguous, that it leaves numerous issues of fact to be determined at trial[.]” According to plaintiffs’ rather convoluted argument on appeal, they suggest that ambiguity is present in the homeowner’s policy because there is no exclusion for water damage in a separate section entitled “PERILS INSURED AGAINST[.]” Instead, the water-damage
The plaintiffs also contend on appeal that the homeowner’s policy, while excluding dаmage done by water, does not explicitly exclude damage caused by sewage or wastewater. However, the homeowner’s policy expressly excludes water damage caused from “[wjater which backs up through sewers[,]” which would incontrovertibly include sewage. Furthеrmore, the record indicates that heavy rain overloaded the sewer system, causing water and raw sewage
Although we consider the foregoing exclusion provisions dispositive, we address the plaintiffs’ assertion that a genuine issue of material fact still exists as to whether their property was damaged as a result of an act of God or by human negligence. To support this argument, the plaintiffs invoke Shelby Insurance Co. v. Northeast Structures, Inc.,
IV
Conclusion
For the reasons stated in this opinion, we affirm the judgments of the Superior Court. The record may be remanded to the Superior Court.
Notes
. U.S. Filter is now known as Veolia Water North American Operating Services, LLC, and in this opinion it shall be referred to as "Veolia.”
. The complaint also named the City of Cran-ston as a defendant, but the city is not involved in the present appeal.
.The record indicates that, in 1997, Triton entered into a lease and service agreement (LSA) with the City of Cranston to operate and maintain its sewer disposal system. Triton later subcontracted its obligations under the LSA with Professional Services, Inc., which, in turn, entered into an assignment and assumption agreement in 2001 with Veo-lia.
.This Court has previously stated that when "an appeal has been prematurely filed, [this Court] will 'treat the appeal as if it had been timely filed after judgment was entered.’ ” Arnold Road Realty Associates, LLC v. Tiogue Fire District,
. In addition to its motion for summary judgment, Triton and Veolia also sought an entry of final judgment pursuant to Rule 54(b).
. Article I, Rule 4(a) of the Supreme Court Rules of Appellate Procedure requires appeals in civil cases to be filed "within twenty (20) days of the date of the entry of the judgment, order, or decree appealed from.”
. After a prebriefing conference before a justice of this Court on May 24, 2011, plaintiffs were ordered to file a supplemental statement within twenty days that "addressfed] the question of whether or not the appeal from the December 15, 2009 judgment was timely.” We note that not until the morning of oral argument before this Court on May 3, 2012, nearly a year later, did plaintiffs file a supplemental statement, which consisted of a single paragraph. Because this supplemental statement was not submitted to this Court in a timely manner, we will not consider it.
. Although plaintiffs' argument on appeal only mentions damage caused by "raw sewerage” entering into the basement, plaintiffs’ original complaint acknowledged that plaintiffs’ basement "was filled with sewerage and water, causing damage to their home.”
. While it has no bearing on this matter as it relates to Peerless, we note that Triton and Veolia did raise the issue of non-liability because of an act of God in their answer as an affirmative defense.
