Exhibit 8.2

[•], 2025

Aris Water Solutions, Inc.

9651 Katy Freeway, Suite 400

Houston, Texas 77024

Ladies and Gentlemen:

We have acted as counsel to Aris Water Solutions, Inc., a Delaware corporation (“Aris”), in connection with the transactions contemplated by the Agreement and Plan of Merger, dated as of August 6, 2025 (as may be amended or modified from time to time in accordance with its terms, the “Merger Agreement”), by and among Aris, Western Midstream Partners, LP, a Delaware limited partnership (“WES”), Arrakis OpCo Merger Sub LLC, a Delaware limited liability company and direct subsidiary of WES (“OpCo Merger Sub”), Arrakis Holdings Inc., a Delaware corporation and direct subsidiary of WES (“Arrakis Holdings”), Arrakis Unit Merger Sub LLC, a Delaware limited liability company and direct subsidiary of WES (“Unit Merger Sub”), Arrakis Cash Merger Sub LLC, a Delaware limited liability company and direct subsidiary of Arrakis Holdings (“Cash Merger Sub”) and Aris Water Holdings, LLC, a Delaware limited liability company (“Aris OpCo”), including the merger of OpCo Merger Sub with and into Aris OpCo, with Aris OpCo continuing as the surviving company (the “OpCo Merger”), the merger of Cash Merger Sub with and into Aris, with Aris continuing as the surviving corporation (the “Surviving Corporation”) (together with the OpCo Merger, the “Initial Mergers”) and the merger of Unit Merger Sub with and into the Surviving Corporation, with the Surviving Corporation continuing as the surviving corporation (together with the Initial Mergers, the “Mergers”). As a result of the Mergers, among other things, (i) each share of Class A common stock, par value $0.01 per share, of Aris and (ii) each Aris OpCo Stapled Unit (comprising one unit of Aris OpCo and one corresponding share of Class B common stock, par value $0.01 per share, of Aris), held as of immediately prior to the Mergers, will receive for each such share or unit (1) a combination of 0.450 common units representing limited partner interests in WES (“WES Common Units”) and $7.00 in cash (without interest), (2) $25.00 in cash (without interest), subject to proration to ensure that the aggregate amount of cash paid in the Mergers does not exceed $415,000,000, or (3) 0.625 WES Common Units. Unless otherwise indicated, each capitalized term used herein has the meaning ascribed to it in the Registration Statement (as defined below).

This opinion is being delivered in connection with the Registration Statement (File No. 333-[•]) of WES on Form S-4, filed with the Securities and Exchange Commission, as amended and supplemented through the date hereof (the “Registration Statement”).

In preparing the opinion set forth below, we have examined and reviewed originals or copies, certified or otherwise identified to our satisfaction, of the Registration Statement, the Merger Agreement, and such other documents, certificates, and records as we have deemed necessary or appropriate as a basis for our opinion. In such examination, we have assumed the genuineness of all signatures, the legal capacity of natural persons, the authenticity of all documents submitted to us as originals, the conformity to original documents of all documents submitted to us as duplicates or certified or conformed copies, and the authenticity of the originals of such latter documents.

Gibson, Dunn & Crutcher LLP

811 Main Street Suite 3000 | Houston, TX 77002-6117 | T: 346.718.6600 | F: 346.718.6620 | gibsondunn.com

Aris Water Solutions, Inc.

[•], 2025

Page 2

In rendering our opinion, we have assumed, without any independent investigation or examination thereof, that (i) the Mergers will be consummated in the manner described in the Registration Statement and the Merger Agreement and will be effective under applicable law, (ii) none of the terms or conditions contained in either the Registration Statement or the Merger Agreement will be waived or modified, and (iii) the facts relating to the Mergers are accurately and completely reflected in the Registration Statement and the Merger Agreement. Our opinion assumes and is expressly conditioned on, among other things, the initial and continuing accuracy of the facts, information, covenants, representations, and warranties set forth in the documents referred to above.

Our opinion is based on the Internal Revenue Code of 1986, as amended (the “Code”), Treasury regulations promulgated thereunder, judicial decisions, and published rulings and administrative pronouncements of the Internal Revenue Service (the “IRS”), in each case in effect as of the date hereof. These authorities may change or be subject to differing interpretations. Any such change or differing interpretation may be applied retroactively in a manner that could affect the conclusion expressed herein. There can be no assurance that the IRS or a court will not take a position contrary to our opinion.

Based upon the foregoing, and subject to the qualifications, assumptions, and limitations stated herein and in the Registration Statement, we hereby confirm that the statements of legal conclusion set forth in the section of the Registration Statement entitled “Material U.S. Federal Income Tax Considerations—Material U.S. Federal Income Tax Consequences of the Mergers” constitute the opinion of Gibson, Dunn & Crutcher LLP as to the material U.S. federal income tax consequences to holders of Aris Class A Common Stock and holders of Aris OpCo Stapled Units, as applicable, of the Mergers to be consummated in connection with the stockholder vote regarding the transactions contemplated by the Merger Agreement.

This opinion is being delivered prior to the consummation of the Mergers and therefore is prospective and dependent on future events. This opinion is expressed as of the date hereof, and we are under no obligation to supplement or revise our opinion to reflect any legal developments, any factual matters arising subsequent to the date hereof, or the impact of any information, document, certificate, record, statement, representation, covenant, or assumption relied upon herein that becomes incorrect or untrue.

Our opinion is limited to the U.S. federal income tax issues specifically addressed herein, and no opinion is expressed or should be inferred as to any other U.S. federal income tax issues or the tax consequences under any state, local, or foreign laws or with respect to other areas of U.S. federal taxation. This opinion has been prepared solely in connection with the Registration Statement and may not be relied upon for any other purpose without our prior written consent. We hereby consent to the filing of this opinion as Exhibit 8.2 to the Registration Statement. In giving this consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act of 1933, as amended, or the rules and regulations of the Securities and Exchange Commission thereunder.

Respectfully,