City of Highland Park, Mich. v. EPA ( 2020 )


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  •                          NOT RECOMMENDED FOR PUBLICATION
    File Name: 20a0279n.06
    Nos. 19-1979/1981
    UNITED STATES COURT OF APPEALS
    FOR THE SIXTH CIRCUIT
    CITY OF HIGHLAND PARK, MICHIGAN,                         )                           FILED
    )                     May 18, 2020
    Plaintiff-Appellant,
    )
    DEBORAH S. HUNT, Clerk
    )
    v.
    )
    ENVIRONMENTAL PROTECTION AGENCY,                         )
    )
    Defendant,                                               ON APPEAL FROM THE
    )
    UNITED STATES DISTRICT
    )
    GREAT LAKES WATER AUTHORITY and                                  COURT FOR THE EASTERN
    )
    SUSAN MCCORMICK (19-1979); CITY OF                               DISTRICT OF MICHIGAN
    )
    DETROIT, MICHIGAN, DETROIT WATER AND                     )
    SEWERAGE DEPARTMENT, and GREAT                           )
    LAKES WATER AUTHORITY (19-1981),                         )
    Defendants - Appellees.                          )
    Before: BOGGS, GRIFFIN, and LARSEN, Circuit Judges.
    LARSEN, Circuit Judge. Like many small municipalities, the City of Highland Park relies
    on others to treat its wastewater. For many years Highland Park contracted with the City of Detroit
    and Detroit Water and Sewerage Department (DWSD) for wastewater treatment; now it relies on
    the Great Lakes Water Authority (GLWA).             These relationships have produced extensive
    litigation; the present suits are the latest rounds. In both lawsuits, Highland Park complains that it
    was charged too much for water and wastewater treatment. In the first case (Docket No. 19-1979),
    Highland Park sued GLWA, GLWA’s CEO Sue McCormick, the EPA, and other entities and
    individuals, raising twelve claims in total. The district court dismissed them all. Highland Park
    now hopes to resurrect only one—a claim against GLWA and McCormick for violation of a
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    National Pollutant Discharge Elimination System (NPDES) permit. In the second case (Docket
    No. 19-1981), Highland Park sued Detroit, DWSD, and GLWA, raising claims for breach of
    contract and declaratory relief. The district court dismissed those claims too. Highland Park
    appeals only the dismissal of the breach-of-contract claim. We conclude that the district court
    correctly dismissed Highland Park’s claim based on the NPDES permit in Docket No. 19-1979
    and the breach-of-contract claim in Docket No. 19-1981. Accordingly, we AFFIRM.
    I.
    Although Highland Park owns and operates a system to collect sanitary sewage and
    stormwater (wastewater) within its city limits, it does not operate a treatment facility. In the past,
    Detroit and DWSD provided treatment services to Highland Park, pursuant to a contract formed
    in 1983 (1983 Contract). In 2015, however, Detroit leased its treatment system to GLWA and, in
    the process, assigned any contracts with Highland Park to GLWA. Highland Park’s sewage and
    stormwater system is connected to GLWA’s treatment system, and all wastewater generated in
    Highland Park now goes through GLWA’s treatment facility.
    Not surprisingly, the operation of a treatment facility is highly regulated. To provide
    stormwater treatment services, DWSD was required to obtain an NPDES permit from the State of
    Michigan Department of Environment Quality.1 It did so, and its Permit took effect on May 1,
    2013. GLWA became a co-permittee when it leased Detroit’s treatment facility. The Permit
    governs GLWA’s operation of its treatment facilities and sets forth numerous requirements, many
    1
    Although “[t]he United States Environmental Protection Agency (EPA) is principally responsible
    for administering the NPDES permit system, . . . it may lawfully delegate permit issuing authority
    to state government.” Nat’l Wildlife Fed’n v. Consumers Power Co., 
    862 F.2d 580
    , 582 (6th Cir.
    1988). The EPA delegated its authority to the State of Michigan in 1974. See Approval of State
    Programs, 39 Fed. Reg. 26,061 (July 16, 1974).
    -2-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    related to combined sewer overflows (CSOs).2 The EPA also regulates treatment facilities through
    various other policies and guidance documents. Three are relevant here: the CSO Control Policy,
    Guidance for Financial Capability Assessment and Schedule Development (Financial Capability
    Guidance), and Guidance for Funding Options (Funding Options Guidance).
    Beyond the various regulations, policies, and guidance documents, a host of contracts and
    judgments govern the parties’ relationship. Long before Detroit leased its system to GLWA,
    Detroit twice sued Highland Park over Highland Park’s failure to pay Detroit for sewer services;
    Highland Park’s failure to adequately charge its residents for sewer services contributed to its
    shortfall on its payments to Detroit. Detroit received money judgments against Highland Park in
    both cases, but the parties settled the cases while Highland Park’s appeals were pending. The
    resulting settlement agreement (the 1996 Settlement Agreement) set terms to ensure Highland Park
    would charge and collect from its customers, so that, in turn, Highland Park would pay for Detroit’s
    services. At the same time, the parties entered into an Amended Consent Judgment, which
    encapsulated many of the terms from the 1996 Settlement Agreement and explained how Highland
    Park would pay the arrearages it owed Detroit.
    In 2013, Detroit again sued Highland Park in federal district court, once again alleging that
    Highland Park had failed to fully and timely pay for Detroit’s treatment services. After the district
    court dismissed various claims, only a claim that Highland Park had breached the Amended
    Consent Judgment remained. The district court later dismissed that claim too, concluding that it
    lacked subject-matter jurisdiction. The court acknowledged that the parties had entered into
    various oral and written agreements since the Amended Consent Judgment. And the Amended
    2
    The defendants explain, “A CSO occurs when a combination of stormwater and wastewater is
    discharged directly into a body of navigable water without treatment.” Docket No. 19-1978,
    Appellees Br. at 7.
    -3-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    Consent Judgment did not provide “for federal court jurisdiction over any future billing disputes
    that may arise between the parties.” According to the court, construing the Amended Consent
    Judgment in that manner “would be to provide, in perpetuity, a federal-court forum for garden-
    variety, state-law breach of contract claims.”
    Detroit then took its grievance to Michigan circuit court and obtained a judgment against
    Highland Park for nearly $20 million in unpaid wastewater-treatment charges and water-supply
    services. The circuit court concluded that Highland Park had breached various agreements.
    Highland Park’s appeals from the judgment failed in both the Michigan Court of Appeals and the
    Michigan Supreme Court. Nonetheless, on return to the state circuit court, the court allowed
    Highland Park to proceed on a counterclaim as a potential setoff to the judgment.              The
    counterclaim, which remains pending, alleged that the 1996 Settlement Agreement and Amended
    Consent Judgment remain in effect and prescribe the rates Detroit may charge for its services. The
    counterclaim also sought a declaration that Detroit had overcharged for its services.3
    Docket No. 19-1979 – Clean Water Act Claim
    Litigation in state court was not enough. Highland Park also sued GLWA, McCormick,4
    and other individuals and entities, including the EPA, in federal court for violations of the Clean
    Water Act (Docket No. 19-1979). Highland Park raised twelve claims, all of which the district
    court dismissed. Only one matters for this appeal, however, as Highland Park challenges only the
    district court’s decision to dismiss Count Nine of its First Amended Complaint, in which Highland
    Park brought a citizen suit under the Clean Water Act against GLWA for allegedly violating the
    3
    According to the defendants, “[t]he counterclaim has since been amended, but these basic claims
    remain, although now primarily against GLWA rather than [Detroit].” Docket No. 19-1981,
    Appellees Br. at 15 n.8.
    4
    The parties treat GLWA and McCormick as one for the purposes of this appeal. We do the same,
    using “GLWA” to refer to both GLWA and McCormick when discussing Docket No. 19-1979.
    -4-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    Permit. See 33 U.S.C. § 1365(a). Highland Park alleged that a variety of GLWA actions had
    violated the Permit by failing to comply with the CSO Control Policy, the Financial Capability
    Guidance, or the Funding Options Guidance.
    GLWA moved to dismiss for lack of jurisdiction under Federal Rule of Civil Procedure
    12(b)(1) and for failure to state a claim under Rule 12(b)(6). The district court determined that it
    lacked subject-matter jurisdiction over Highland Park’s claim because it had “fail[ed] to allege any
    facts that GLWA Defendants violated a condition of a permit issued pursuant to 33 U.S.C. § 1342.”
    The district court denied Highland Park’s motion for reconsideration. Highland Park appealed.
    Docket No. 19-1981 – Breach‑of‑Contract Claim
    One federal suit also was not enough. So Highland Park sued Detroit, DWSD, and GLWA.
    Highland Park sought a declaratory judgment that (1) it had complied with the terms of the
    Amended Consent Judgment while (2) defendants had violated the Amended Consent Judgment
    (and were thus in contempt of court) because they had secured a state-court judgment against
    Highland Park based on rates higher than those set forth in the Amended Consent Judgment
    (Docket No. 19-1981). Highland Park also claimed breach of contract, alleging that the defendants
    had “breached one or more terms of the Settlement Agreement and Sewage Agreements by, among
    other things, billing Highland Park over $17.4 million from 2006 to 2014 in excess of amounts to
    be deposited under the [Amended Consent Judgment].”
    The defendants moved to dismiss for lack of subject-matter jurisdiction. The district court
    granted the motion, calling Highland Park’s claim an “ordinary breach-of-contract claim, which
    c[ould] effectively be resolved in state court” and concluding that it did “not retain perpetual
    jurisdiction over breach-of-contract claims arising out of the Consent Judgment.” The court also
    declined to exercise jurisdiction over Highland Park’s declaratory-judgment claims, viewing those
    -5-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    as Highland Park’s attempt to have a federal court decide the “parties’ state court breach-of-
    contract claims, simply clothed as a different cause of action.”         Highland Park appealed,
    challenging only the district court’s determination that it lacked subject-matter jurisdiction over
    the breach-of-contract claim.5
    II. Docket No. 19-1979 – Clean Water Act Claim
    The Clean Water Act’s citizen-suit provision states that “any citizen may commence a civil
    action on his own behalf . . . against any person . . . who is alleged to be in violation of . . . an
    effluent standard or limitation under this chapter.” 33 U.S.C. § 1365(a)(1). An “effluent standard
    or limitation” includes an NPDES permit or condition of an NPDES permit. See
    id. § 1365(f)(7).
    This includes state-issued NPDES permits. See Parker v. Scrap Metal Processors, Inc., 
    386 F.3d 993
    , 1005–08 (11th Cir. 2004).
    Citizen suits under the Clean Water Act are limited in nature. Askins v. Ohio Dep’t of
    Agric., 
    809 F.3d 868
    , 875 (6th Cir. 2016). “If Congress intended the citizen suit to be all
    encompassing, it would have permitted suit for all violations of the Clean Water Act, rather than
    specifying limited circumstances.”
    Id. The EPA
    and the states remain “the primary enforcers of
    the Clean Water Act.”
    Id. The citizen
    suit “serves only as a backup, ‘permitting citizens to abate
    pollution when the government cannot or will not command compliance.’”
    Id. (quoting Gwaltney
    of Smithfield v. Chesapeake Bay Found., 
    484 U.S. 49
    , 62 (1987)).
    Highland Park’s citizen suit is premised on GLWA’s alleged violation of three EPA
    documents—the Financial Capability Guidance, the CSO Control Policy, and the Funding Options
    Guidance—all of which Highland Park tries to tie to the Permit. We discuss each in turn.
    5
    To the extent Highland Park sought to appeal the dismissal of its declaratory-judgment claims, it
    has forfeited any appeals of them by offering incomprehensible arguments at best. See United
    States v. Johnson, 
    440 F.3d 832
    , 846 (6th Cir. 2006).
    -6-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    Financial Capability Guidance. The EPA promulgated the Financial Capability Guidance
    in 1997. Docket No. 19-1979, R. 87-21, PageID 3671.6 The Guidance serves two purposes: “to
    provide a planning tool for evaluating the financial resources a permittee has available to
    implement CSO controls” and “to assist the permittee, EPA and state NPDES authorities in
    cooperatively developing CSO control implementation schedules.”
    Id. at PageID
    3679–80. The
    Guidance cautions that it “does not recommend specific schedules for implementation of the CSO
    controls based on financial capability or other considerations identified in the CSO Policy. It does,
    however, provide general boundaries to aid all parties in negotiating reasonable and effective
    schedules for implementation of the CSO controls.”
    Id. at PageID
    3680. The parties agree that
    the Permit specifically references the Financial Capability Guidance only once. The Permit states:
    The permittee shall prepare an evaluation of Financial Capability, consistent with
    state and federal guidance, and shall submit the evaluation with the applications for
    reissuance of this permit . . . . The Financial Capability Report shall be in the form
    of previous reports utilizing the [Financial Capability Guidance], and updated with
    information as may be available in order to assess the permittee’s ability to
    undertake future capital improvement projects related to the Long-Term CSO
    Control Program.
    Docket No. 19-1979, R. 87-19, PageID 3639.
    The district court was right to dismiss Highland Park’s claim based on the Financial
    Capability Guidance, though we conclude that the dismissal is properly grounded in Federal Rule
    of Civil Procedure 12(b)(6), rather than Rule 12(b)(1). Rule 12(b)(1) authorizes district courts to
    dismiss complaints for lack of subject-matter jurisdiction. The CWA provides district courts with
    jurisdiction over citizen suits that allege a violation of a permit or a condition of a permit. 33
    U.S.C. § 1365(a), (f). Highland Park’s claim falls within the district court’s jurisdiction because
    6
    Combined Sewer Overflows—Guidance for Financial Capability Assessment and Schedule
    Development      (Final)    (EPA      832-B-97-004) (Feb.    1997),   available   at
    https://www3.epa.gov/npdes/pubs/csofc.pdf.
    -7-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    it alleges that GLWA violated the Permit or a condition of it by not complying with the Financial
    Capability Guidance, which is an express requirement of the Permit.
    Nonetheless, the district court’s judgment dismissing Highland Park’s complaint was
    correct. GLWA also moved to dismiss under Rule 12(b)(6) for failure to state a claim, and we
    may affirm the judgment on this ground. See Morrison v. Nat’l Australia Bank Ltd., 
    561 U.S. 247
    ,
    254 (2010) (resolving the case on Rule 12(b)(6) grounds after determining that the courts below
    erroneously dismissed under Rule 12(b)(1) because “nothing in the analysis of the courts below
    turned on the mistake” and “a remand would only require a new Rule 12(b)(6) label for the same
    Rule 12(b)(1) conclusion”), superseded by statute on other grounds, Dodd–Frank Wall Street
    Reform and Consumer Protection Act, Pub. L. No. 111-203, 124 Stat. 1376 (2010); Loftis v. United
    Parcel Serv., Inc., 
    342 F.3d 509
    , 514 (6th Cir. 2003) (“In reviewing a lower court decision, we
    may affirm for any reason presented in the record, even if the reason was not raised below.”).
    Despite the Rule 12(b)(1) label, the district court’s reasoning supports dismissal under Rule
    12(b)(6). “To survive a motion to dismiss, the plaintiff must allege facts that, if accepted as true,
    are sufficient to state a claim to relief that is plausible on its face.” Cooper Butt ex rel Q.T.R. v.
    Barr, 
    954 F.3d 901
    , 904 (6th Cir. 2020). In dismissing Highland Park’s claim based on the
    Financial Capability Guidance, the district court explained that the Permit “requires GLWA to
    utilize the Guidance Document only when preparing its evaluation of financial capability. Plaintiff
    fails to allege facts that GLWA Defendants submitted evaluations that did not conform to the
    Guidance Document.” Docket No. 19-1979, R. 109, PageID 4974. In its denial of plaintiff’s
    motion for reconsideration, the district court elaborated on its reasoning:
    The allegations included in Plaintiff’s ninth cause of action are a combination of
    conclusory assertions that “[p]ermittee GLWA continues to violate its permit in
    failing to evaluate Financial Capability consistent with state and federal guidance”
    and factual allegations unrelated to the evaluation-preparation process. Plaintiff’s
    -8-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    factual allegations were insufficient because they related to how GLWA
    Defendants charge their clients—particularly Plaintiff—not to the process GLWA
    Defendants went through in preparing their financial evaluations or the text of the
    evaluations that GLWA Defendants submitted.
    Docket No. 19-1979, R. 117, PageID 5146–47 (alteration in original) (citations omitted).
    We agree with the district court. The Permit imposes two requirements on GLWA in
    relation to the Financial Capability Guidance. GLWA must (1) prepare and submit an evaluation
    that conforms with the Financial Capability Guidance “with the applications for reissuance of this
    permit,” and (2) update the evaluation “with information as may be available in order to assess the
    permittee’s ability to undertake future capital improvement projects related to the Long-Term CSO
    Control Program.” Docket No. 19-1979, R. 87-19, PageID 3639. Thus, GLWA can violate this
    provision of the Permit only by failing to properly prepare or submit an evaluation along with a
    resubmission application or failing to update the evaluation with the required information.
    The allegations in Highland Park’s complaint do not relate to the preparation or submission
    of future resubmission applications. Indeed, Highland Park makes no mention of a resubmission
    application. So that leaves only the requirement that GLWA update an evaluation, but that
    requirement is limited. GLWA must update an evaluation only “with information as may be
    available in order to assess the permittee’s ability to undertake future capital improvement projects
    related to the Long-Term CSO Control Program.”
    Id. Highland Park
    does not allege that GLWA
    has failed to update an evaluation, nor does it explain what information GLWA is withholding that
    would allow the Michigan Department of Environmental Quality to assess GLWA’s ability to
    undertake future improvement projects.
    Highland Park instead alleges various ways in which GLWA has reduced its financial
    capability and overcharged Highland Park for sewer services. Elsewhere, it alleges that GLWA
    failed to properly calculate various charges and costs, but it does not say when these alleged
    -9-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    miscalculations occurred. Given that there is no mention of a resubmission application in the
    Amended Complaint (or by the parties at any time for that matter), we can only assume that this
    miscalculation occurred when Detroit and/or GLWA first obtained the Permit. So nothing in
    Highland Park’s complaint refers to any GLWA failure in preparing or submitting a financial
    evaluation with a resubmission application, or any failure to update the Permit with the necessary
    information. As a result, Highland Park has failed to state a claim for violation of the Permit by
    way of a violation of the Financial Capability Guidance.
    CSO Control Policy. The EPA published the CSO Control Policy in 1994, with the goal
    of “establish[ing] a consistent national approach for controlling discharges from CSOs to the
    Nation’s waters through the [NPDES] permit program.” 59 Fed. Reg. 18,688, 18,688 (Apr. 19,
    1994). Under the Policy, “NPDES authorities . . . are responsible for implementing this Policy. It
    is their responsibility to assure that CSO permittees develop long-term CSO control plans and that
    NPDES permits meet the requirements of the [Clean Water Act].”
    Id. at 18,690.
    The Clean Water Act requires that “[e]ach permit . . . issued pursuant to this chapter . . .
    for a discharge from a municipal combined storm and sanitary sewer shall conform to the [CSO]
    Control Policy . . . .” 33 U.S.C. § 1342(q)(1). The parties dispute whether this provision makes
    conformance with the CSO Control Policy a condition of the Permit. The district court said it did
    not. We need not decide because Highland Park has failed to state a claim in any event.
    Highland Park asserts on appeal that “[t]he gravamen of [its] Ninth claim is a violation of
    the CSO Policy.” But a review of the Amended Complaint belies that claim. The Amended
    Complaint quotes § 1342(q)(1)–(2) and one passage from the CSO Control Policy. The Amended
    Complaint then shifts to the Financial Capability Guidance, offering numerous allegations related
    to the creation of a financial capability plan consistent with that Guidance. The CSO Control
    -10-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    Policy is again mentioned briefly, within a quote from the Financial Capability Guidance. The
    only other reference to the CSO Control Policy (through its citation of § 1342(q)) is the following
    vague allegation: “GLWA is in violation of 33 USCA § 1342(c) and (q) and § 1314(i)(2) under
    § 1342(k) by not following its permit requirement to utilize [the Financial Capability Guidance],
    and updated [sic] with information as may be available to assess the permittee’s ability to
    undertake future capital improvement projects related to the Long-Term CSO Control Program.”
    How this amounts to a violation of the CSO Control Policy the reader is not told.
    Far from being the gravamen of the complaint, as Highland Park now dubiously states, the
    CSO Control Policy is scarcely mentioned. Highland Park’s complaint does not allege that the
    CSO Control Policy is part of the Permit, or that conformance with it is a condition of the Permit
    (other than a rote recitation of § 1342(q)). Highland Park does not highlight the portions of the
    CSO Control Policy (which is lengthy and convoluted) that GLWA allegedly violated, nor does it
    offer any facts tied to a violation of the Policy. To put it simply, Highland Park never explained
    how it purported to proceed by citizen suit against GLWA for violation of the CSO Control Policy.
    The complaint shows clearly that Highland Park failed to pursue a claim based on the CSO
    Control Policy, offering at best conclusory allegations related to the Policy. The district court was
    right to dismiss any such claim. See Ashcroft v. Iqbal, 
    556 U.S. 662
    , 678–79 (2009) (recognizing
    that conclusory allegations will not survive a motion to dismiss under Rule 12(b)(6)).
    Funding Options Guidance. The final source of an alleged permit violation is the Funding
    Options Guidance, promulgated by the EPA in 1995. Highland Park’s theory appears to be that
    the Permit incorporated the CSO Control Policy, which in turn incorporated the Funding Options
    Guidance, which GLWA in turn violated by charging ad valorem taxes for sewer services. We
    need not try to make sense of this argument. In its opening brief, Highland Park makes no attempt
    -11-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    to salvage its claim related to the Funding Options Guidance and instead settles for merely copying
    the Amended Complaint’s allegations.7 Highland Park has forfeited any argument related to the
    Funding Options Guidance. See 
    Johnson, 440 F.3d at 845
    –46.
    Highland Park has not shown that the district court erred by dismissing its citizen suit
    against GLWA in Docket No. 19-1979.
    III. Docket No. 19-1981 – Breach‑of‑Contract Claim
    With respect to this lawsuit, Highland Park asserts jurisdiction under 28 U.S.C. § 1331, the
    Amended Consent Judgment, 28 U.S.C. § 1651, and prior orders of the court. The district court
    dismissed Highland Park’s claim for lack of subject-matter jurisdiction under Rule12(b)(1), calling
    the claim an “ordinary breach-of-contract claim, which c[ould] effectively be resolved in state
    court” and concluding that the court “[did] not retain perpetual jurisdiction over breach-of-contract
    claims arising out of the Consent Judgment.” We review the dismissal de novo, Memphis Biofuels,
    LLC v. Chickasaw Nation Industries, Inc., 
    585 F.3d 917
    , 919 (6th Cir. 2009), and conclude that
    the district court was right.
    Federal-question jurisdiction gives district courts jurisdiction over “all civil actions arising
    under the Constitution, laws, or treaties of the United States.” 28 U.S.C. § 1331. Highland Park’s
    complaint makes no mention of the Constitution or any federal statutes or treaties. Instead,
    7
    Highland Park’s First Amended Complaint makes only three cursory references to the Funding
    Options Guidance. First, it states, “EPA Guidance for Financial Capability required to be utilized
    as a condition of GLWA’s NPDES permit specifically refers to [the Funding Options Guidance]
    as part of the overall CSO Control Policy.” It then quotes the following passage from the Funding
    Options Guidance: “The primary restriction is that a user fee system must be in place that ensures
    that each user or user group pays its proportionate share of operating costs, based on the quantity
    and quality of wastes discharged. As a result, taxes may not be used to pay operating costs for
    these projects.” The complaint then alleges, “GLWA is in clear violation of it [sic] permit
    requirement to utilize [the Funding Options Guidance] because it has charged Highland Park
    property owners an unconstitutional ad valorem tax for sewer services charged in violation of
    GLWA duty to charge each ‘user or user group’ user fees proportionately.”
    -12-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    Highland Park appears to rest its argument for federal-question jurisdiction on the principle that
    district courts retain jurisdiction to enforce their own orders, including, here, the Amended Consent
    Judgment. We do not dispute the principle, of course. See Pedreira v. Sunrise Children’s Servs.,
    Inc., 
    802 F.3d 865
    , 871 (6th Cir. 2015) (“[W]hen a court enters a consent decree, it retains
    jurisdiction to enforce the decree.”). But that principle alone does not create jurisdiction over
    Highland Park’s breach-of-contract claim.
    The district court was right that nothing in the Amended Consent Judgment purports to
    reserve in the district court “perpetual jurisdiction over billing disputes between the two parties.”
    The Consent Judgment is silent on the court’s continuing jurisdiction.            To the extent it
    contemplates future action at all, it contemplates only that “[i]n the event that Highland Park fails
    to pay Detroit for current or future services, Detroit may take any action it deems necessary or
    appropriate to obtain and ensure payment for the same and to seek any further relief as may be
    appropriate under the circumstances.” Docket No. 19-1981, R. 16-6, PageID 202. But such a
    future action, i.e., a new lawsuit, would require its own jurisdictional grounding.
    The Amended Consent Judgment, moreover, provides only some of the terms of the
    parties’ relationship. Although Highland Park’s breach-of-contract claim nominally asserts that
    defendants breached the Amended Consent Judgment, the district court rightly ascertained that the
    claim goes well beyond that one document. Many other agreements and orders govern the parties’
    relationship, including the 1983 Contract, the 1996 Settlement Agreement, other written and oral
    agreements, and opinions and judgments from the Michigan state court. All likely come into play
    when considering Highland Park’s continuing quest to show that the defendants have overcharged
    for their services. Even Highland Park acknowledges this in its complaint. See Docket No. 19-
    1981, R. 1, PageID 15 (“Highland Park has fully and substantially complied with . . . its obligations
    -13-
    Nos. 19-1979/1981, City of Highland Park v. EPA, et al.
    under the Amended Consent Judgment/Settlement Agreement, and has not breached any of the
    terms thereof or of the 1983 Agreement. GLWA has breached one or more terms of the Settlement
    Agreement and Sewage Agreements . . . .”). At bottom, then, Highland Park’s claim is a run-of-
    the-mill breach‑of‑contract claim that contains no federal question.
    The All Writs Act does not save Highland Park. Federal courts may “issue all writs
    necessary or appropriate in aid of their respective jurisdictions and agreeable to the usages and
    principles of law.” 28 U.S.C. § 1651(a). But the All Writs Act is not itself an independent source
    of jurisdiction. See United States v. N.Y. Tel. Co., 
    434 U.S. 159
    , 172 (1977); see also Baze v.
    Parker, 
    632 F.3d 338
    , 345 (6th Cir. 2011). Thus the Act cannot, by itself, pull Highland Park’s
    breach-of-contract claim within the reach of federal jurisdiction.
    Nor do prior orders of the district court save Highland Park. Highland Park offers various
    orders to show that the district court has jurisdiction over disputes between Highland Park and
    Detroit. But none of the orders actually considered and found subject-matter jurisdiction. The one
    order that did specifically address jurisdiction concluded that the court lacked jurisdiction over an
    analogous claim. And regardless of what prior district court orders say, they do not bind us, and
    we have an independent duty to assess subject-matter jurisdiction. See Arbaugh v. Y&H Corp.,
    
    546 U.S. 500
    , 506–07 (2006). We conclude that it is lacking here.
    The district court appropriately dismissed for lack of jurisdiction.
    ***
    We AFFIRM the judgments of the district court in Docket No. 19-1979 and Docket No.
    19-1981.
    -14-