Exhibit 8.1

August 20, 2018

DCP Midstream, LP

370 17th Street, Suite 2500

Denver, Colorado 80202

Ladies and Gentlemen:

We have acted as counsel to DCP Midstream, LP, a Delaware limited partnership (the “Partnership”), in connection with the preparation of and filing with the Securities and Exchange Commission (the “Commission”) of (i) a Prospectus Supplement dated August 20, 2018 (the “Prospectus Supplement”) forming part of the Registration Statement on Form S-3 (No. 333-219927) (the Prospectus Supplement and Registration Statement together, the “Filing”) under the Securities Act of 1933, as amended (the “Securities Act”), relating to the offer and sale from time to time, pursuant to Rule 415 under the Securities Act, of up to an aggregate of $750,000,000 of common units representing limited partner interests in the Partnership (the “Common Units”) to be sold through the Managers (as defined below), pursuant to the Equity Distribution Agreement, dated August 20, 2018, among the Partnership, DCP Midstream GP, LP, a Delaware limited partnership (the “General Partner”), DCP Midstream GP, LLC, a Delaware limited liability company, and Citigroup Global Markets Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, Barclays Capital Inc., BB&T Capital Markets, a division of BB&T Securities, LLC, BTIG, LLC, Jefferies LLC, J.P. Morgan Securities LLC, Mizuho Securities USA LLC, MUFG Securities Americas Inc., RBC Capital Markets, LLC, SMBC Nikko Securities America, Inc., SunTrust Robinson Humphrey, Inc., TD Securities (USA) LLC and Wells Fargo Securities, LLC (together, the “Managers”); and (ii) the current report on Form 8-K to be filed with the Commission on August 20, 2018 (the “Commencement Form 8-K”), pertaining to the Common Units and which will include this opinion letter as an exhibit and result in it being filed by the Partnership with the Commission as Exhibit 8.1 to the Registration Statement through incorporation by reference. In connection therewith, we have participated in the preparation of the discussion (the “Discussion”) set forth under the captions “Material U.S. Federal Income Tax Consequences” in the Filing.

In rendering the Opinions (as defined below), we have examined, and relied upon, the following records, certificates, representations, and other documents (the “Documents”):

Holland & Hart LLP  Attorneys at Law

Phone (303) 295-8000  Fax (303) 295-8261  www.hollandhart.com

555 17th Street Suite 3200 Denver, CO 80202-3979  Mailing Address Post Office Box 8749 Denver, CO 80201-8749

Aspen Billings Boise Boulder Carson City Cheyenne Colorado Springs Denver Denver Tech Center Jackson Hole Las Vegas Reno Salt Lake City Santa Fe Washington, D.C.

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For purposes of rendering the Opinions, as to all factual representations and assumptions, we have relied solely on the Documents and have not made any independent investigation or audit of the facts set forth therein. We also have relied upon certain representations made to us by the Partnership, such as that the factual information presented in the Documents and the Discussion or otherwise furnished to us is accurate and complete. In connection with the Opinions, we have examined originals or copies, certified or otherwise identified to our satisfaction, of the Documents and such records, certificates, instruments, and other documents as we have deemed relevant and necessary as a basis for the Opinion. We have assumed that the information presented in the Documents or otherwise furnished to us is accurate and complete in all material respects. We are not aware of any material facts or circumstances contrary to, or inconsistent with, the representations upon which we have relied as described herein or the assumptions set forth herein. The opinions expressed in this letter are strictly limited to the Opinions and no other opinions may be inferred. No inference should be drawn on any matter for which we have not specifically given an opinion. The Opinions are provided as legal opinions only, effective as of the date of this letter, and not as a guaranty or warranty of the matters discussed or referenced herein or as representations of fact.

In connection with the Opinions, we have assumed, with your consent:

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In connection with the preparation of the Discussion, we hereby express the following opinions (the “Opinions”):

The Opinions are based on relevant provisions of the Internal Revenue Code of 1986, as amended, Treasury regulations thereunder (including proposed and temporary Treasury regulations), and interpretations of the foregoing as expressed in court decisions, legislative history, and administrative determinations by the Internal Revenue Service (the “IRS”) (including its practices and policies in issuing private letter rulings which are not binding on the IRS, except with respect to the taxpayer that receives such a ruling), all as in effect on the date hereof (collectively, the “Federal Tax Law”). The Federal Tax Law is subject to change. Any such changes could apply retroactively. A change in Federal Tax Law could result in our inability to give the Opinions under the changed Federal Tax Law.

The Opinions do not foreclose the possibility of a contrary determination by the IRS or a court of competent jurisdiction, or of a contrary position by the IRS or the U.S. Department of the Treasury in regulations or rulings issued in the future. In this regard, although we believe that the Opinions will be sustained if challenged, an opinion of counsel with respect to an issue is not binding on the IRS or the courts, and is not a guarantee that the IRS will not assert a contrary position with respect to such issue or that a court will not sustain such a position asserted by the IRS.

We assume no obligation to advise you of any changes in the Opinions or of any new developments in the application or interpretation of the Federal Tax Law subsequent to the date of this letter. The Partnership’s qualification and taxation as a publicly traded partnership that is not taxable as a corporation depends on the Partnership’s ability to meet, on a continuing basis, the various requirements under the Federal Tax Law with regard to, among other things, the sources of its income. We will not review the Partnership’s compliance with these requirements on a continuing basis. Accordingly, no assurance can be given that the actual results of the operations of the Partnership or the sources of its income, for any given taxable year, will satisfy the requirements under the Federal Tax Law for qualification and taxation as a publicly traded partnership that is not taxable as a corporation.

We hereby consent to the filing of this opinion of counsel as an exhibit to the Commencement Form 8-K, to the reference to our firm in the Prospectus Supplement, and to the incorporation by reference of this opinion letter into the Registration Statement. In giving this consent, we do not admit that we are included in the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the Securities and Exchange Commission issued thereunder.

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References in this letter to “we” or “us” and in the Filing to “tax counsel” shall mean only the attorneys of Holland & Hart LLP who have materially participated in the preparation of the Discussion and this letter. If any statement in the Filing or this letter states, or implies, that we have, or have not, taken any particular action, such statement shall be interpreted as referring only to the actions of such attorneys.

Sincerely yours,

Holland & Hart LLP