Appeal from Circuit Court of St. Louis County. The plaintiffs (appellants) are School District No. 24 (a common school district), and the three directors of that district who sue in their capacity as directors and also as taxpayers. The defendants named in the petition are the following officers of said county: Neaf, the Assessor, Benson, the Collector, and Dwyer, the Treasurer. By leave Of court others were permitted to intervene as defendants, to-wit: City of Clayton, Town School District of Clayton, and City of Brent-wood. The petition, so far as pertinent here, states: that the St. Louis County Water Company 'is a privately owned corporation, - selling water to various municipalities, industries and persons in sáid county; that its pumping and distributing plant and reservoirs are located in *704 the plaintiff- school district;- .that its .-maims, pipes, conduits.-and hydrants, used-in transporting water to various parts of the. county, are attached to and a part of the company’s plant, appurtenant to the' land upon which the plant is situate, and a part of the realty;.that the defendant county officers have treated and will continue to treat such pipes, conduits, etc., as personalty for taxation purposes by virtue of an Act of the General Assembly found- in Session Acts of 1937, pages 545-547, -the same being an amendment to Section 9977, Revised Statutes 1929 (Mo. Stat. Ann., sec. 9977, p. 8015) ; that said Act of 1937 is unconstitutional for certain stated reasons; that if such property is treated as personalty for taxation purposes, the plaintiff district will be deprived of a large sum in taxes and -the same will be distributed among the- districts and municipalities where such pipes, conduits, etc., are located; the petition prays that the Act of 1937 be declared unconstitutional and defendants be restrained froiti treating such property as personalty for taxation purposes.

The Act of 1937 reads as follows:

“All mains, pipes, - meters and other equipment, constituting -parts of a single, common or- unified distributing system for supplying water or gas to two or more incorporated municipalities, belonging to any water company or gas company,, firm, corporation, association or persons shall be treated, for tax purposes,, as personal property and shall-be taxable as such where situated.” - •

The defendants, in their returns to the order to show cause why an injunction should‘not issue and in their answers, among other defenses, alleged a defect in the party defendants.- - After trial .on the merits, the chancellor entered a decree for defendants, refused to issue an injunction, and ordered the petition of plaintiffs dismissed. Plaintiffs have appealed. .

- In this court the defendant county officers have'-raised the additional objection that there.is a fatal defect of parties plaintiff; that is, that on the face of the petition the plaintiffs have no right -to maintain this action. This point, as well as the alleged defect in the parties defendant, has been ably briefed by both sides; and, in our view, these are the only questions necessary for us to consider, . ¡ ,

As to -the right of plaintiffs to maintain, the action, respondents state their position as follows: “It appears from the record herein that plaintiffs (appellants) do not own the property affected by the tax in question. A bill for an injunction to restrain the enforcement of an alleged illegal tax can be maintained only by one whose, own property is affected by the tax, no one being- permitted to enjoin the collection of taxes assessed against another.”

Respondents cite the. case of Robins v. Latham, 134 Mo. 466, 36 S. W. 33, and cases from the courts of other states. In Robins.v. Latham, the plaintiff alleged that- a levee district had been illegally organized; that it had illegally, collected a tax from plaintiff and *705 other taxpayers and prayed that the treasurer be enjoined from making disbursement. This court , said that the petition, did-not allege, the amount of tax paid by plaintiff and thus .failed to show that he would sustain a substantial injury; also that.the petition Tailed to show that plaintiff had. paid the tax under- duress. ; For these reasons .this court refused injunctive relief to plaintiff. , We fail to see how that case, supports respondents’ contention in the instant ease. Here the. plaintiff is not trying to restrain the assessment of taxes against; and'the payment of taxes by, the- St. Louis County Water Company. The. real purpose of.,the instant action is to . prevent ■ disbursement of .taxes paid by the water, company to .municipalities and school'districts-other than School District.No, 24. Our statutes confer upon school districts the. power to sue and.be sued. The -plaintiff district, has a substantial' interest- in preventing taxes which rightfully belong to it from being paid /to other.districts..- It has just,.as.much interest in that question .as it would in preventing property belonging to it from-being taken-and-used by other districts. Also, individual, taxpayers in District No. 24,- if they allege and prove substantial injury, are -proper,., but not necessary,, parties, to restrain the disbursement outside the district of taxes which, should be paid, to the district. We..hold that, the record does not show a defect of parties plaintiff. .- - - - - .... - - ■

Is there a -defect, in. the parties defendant? It .seems-to, us that the same reasons, which, give the right To plaintiff .school-district to bring this suit, give, the right, to defend it to-all other, school districts and municipalities into which the mains, pipes, etc.,..of the water company run. If this property is taxed as realty, the.,taxes .go to the plaintiff school district; if it -is taxed as personalty, the taxes go to the districts and municipalities where the property is located. .... ■ . ...

State ex rel. School District v. Neaf, 344 Mo. 905, 130 S. W. (2d) 509, was a mandamus suit between substantially the same parties as those in the -instant; case.. There the plaintiff sought to have the same statute declared unconstitutional and. to compel, the .assessment of the same property as realty in School District No. 24..-- We said: “On-the record the Lake School District,.is the only complainant. If •relator, the. Lake School District,,is,directly interested in the taxation of. said property as a part-of the. real estate of the company, by .the same token the many, municipalities and- school districts in Qt. Louis County, are, directly interested in the .taxation of-said property where located.” : •

32 Corpus Juris, page 296, sec. 477 (2), speaking of parties in injunction suits, says: “Under -the general rule all persons .whose ■interests will necessarily be .affected by the decree, .or without whose presence a .complete settlement.of the questions involved in the action could not, be attained, are, of course, properly joined as defendants. *706 So also persons without whose joinder no effectual decree can be rendered in plaintiff’s favor are indispensable parties, since the court ought not to interfere at all except in a mode which would be effectual for the purpose of the decree. Also, under another general rule of equity practice, all persons not joined as plaintiffs who have an interest in the controversy, presented by the bill of such a nature that any decree completely adjudicating the rights of those before the court must necessarily affect the rights of the former, are indispensable • parties without whom the court cannot lawfully proceed.”

47 Corpus Juris, page 87, sec. 174(2) “. . . A person who has an interest' in the subject matter in litigation of such a direct and immediate character that it would be legally affected by a judgment rendered in the case is a necessary party defendant, as is, also, a person who has a right to litigate over again in a new proceeding the same questions involved in the case, ...”

In State ex rel. v. Sanderson, Collector, 54 Mo. 203, injunction was sought to restrain the collection of taxes levied to pay the interest on bonds issued to a railroad. This court held that the county court, who issued the bonds and levied the tax, and the railroad were necessary parties.

Appellants argue that the only necessary defendants are the officials charged with the duty of assessing and collecting taxes; that the various school districts and municipalities are not charged with any duties which could be enjoined by this action.

Appellants’ argument on this point is answered, in principle, by 'the authorities which we have already cited. It is answered directly by the opinion of the St. Louis Court of Appeals in the case of School District No. 4 v. Smith, 90 Mo. App. 215. That was a suit by a school district against a county clerk to declare illegal and void certain proceedings looking to a change of boundary between two school districts and to restrain the transfer of school taxes of certain taxpayers from the plaintiff district to another district. The trial chancellor sustained a demurrer to the petition. The Court of Appeals held that injunction was the proper remedy, but sustained the ruling on the demurrer, saying:

“The sixth and last ground of demurrer, to-wit, ‘that there is a defect of parties defendant in that school district number eight is a necessary party, ’' presents a more difficult question for solution. No' restraining order or judgment is asked against the district or its officers and no such judgment or order can be directly rendered against the district or any of its officers. The sole relief prayed for is to enjoin the defendant from performing certain official acts which can be performed by none other than defendant as clerk of the county court; but the defendant' has no interest in the subject-matter in controversy while the district has, and should the defendant be enjoined, the injunction would operate through him upon the district *707 a,s much so as if it were a party to the proceedings and the district would be effectually deprived of the benefits it would otherwise derive from the disputed territory as though the decree was in terms directed against it and its officers. [High on Injunctions (3 Ed.), sec. 1551.] In A., T. & S. F. Ry. Co. v. Wilhelm, 33 Kan. 206, it was held that, ‘Where an action is brought against the sheriff and treasurer of a county to restrain the collection of taxes levied by a school district for building and library funds upon the ground that the levies are excessive, a final injunction would not be granted until the officers of the school district directly interested in the collection of taxes are made parties defendant.’ To grant the relief prayed for would be as effectual against the school district as though it were a party to the proceedings and it would thus be deprived of its rights without the opportunity of being first heard. This is opposed to the fundamental principles of the law.. [State ex rel. Lemon v. Buchanan Co. Board of Eq., 108 Mo. l. c. 241.] We, therefore, hold there was no error in sustaining the demurrer and affirm the judgment.”

We hold that the municipalities and school districts in which are located the mains, pipes, etc., of the water company are necessary parties to a complete determination of the issues herein.

■It would seem that the reasons which make it necessary to bring .in as defendants the various school districts and municipalities would ¡also make it necessary to bring- in the St. Louis County Water Company as a defendant. This taxpayer has a direct and substantial interest in the result of this litigation. If its property is treated as realty, it will ■ pay taxes at a low rate, only in the plaintiff district where ho high school is maintained and there is ho municipality. ¡ If such property is treated as personalty, portions of it will be assessed at higher rates in some of the districts and other portions will ■be subjected to the additional burdens of municipal taxes. Appellants’ brief shows that the pipes, mains, etc., of the water company extend into some forty-two school districts and eighteen cities and towns, and. the assessed valuation thereof as personalty is more than two million dollars.

• As the parties' necessary for a complete determination of the issues herein are not before the court, we do not pass upon other points contained in the briefs.

Accordingly, the decree of the chancellor dismissing the petition is hereby reversed and the cause remanded so that plaintiffs, within a reasonable time to be fixed by the chancellor, may- amend their petition and bring in new parties defendant if they so desire.