MUELLER WATER PRODUCTS, INC. VIA EMAIL Steven Heinrichs SHeinrichs@muellerwp.com Dear Steven: Reference is made to the Employment Agreement, dated as of July 18, 2018 between you and Mueller Water Products, Inc. (the “Company”, and such agreement, the “Employment Agreement”) and the Executive Change-in-Control Severance Agreement, dated as of September 30, 2019, between you and the Company (the “CIC Agreement”). Unless otherwise defined herein, all capitalized terms shall have the meanings ascribed to them in the Employment Agreement. This letter memorializes our discussions regarding your continued employment with the Company on and following August 21, 2023 (the “Effective Date”). As discussed, on the Effective Date, you will assume the role of Chief Financial Officer and Chief Legal Officer of the Company, reporting directly to the Chief Executive Officer of the Company. In consideration of your new role, you will be entitled to the following payments and benefits: 1. An annual base salary equal to $550,000, target annual bonus equal to 70% of annual base salary and target annual long-term incentive opportunity equal to 170% of annual base salary, to be effective as of the Effective Date with respect to the base salary and target annual bonus (provided, that your annual bonus for fiscal year 2023 will be determined based on (x) your target annual bonus in effect prior to the Effective Date with respect to the portion of the fiscal year occurring prior to the Effective Date, and (y) your target annual bonus as set forth herein with respect to the portion of the fiscal year occurring on and following the Effective Date), and to be effective for the 2024 fiscal year with respect to the target long-term incentive opportunity. 2. A retention award consisting of 50% restricted cash and 50% Restricted Stock Units (the “Transition Grant”) granted pursuant to the Company’s Second Amended and Restated 2006 Stock Incentive Plan and an award agreement (the “Transition Grant Award Agreement”), with an approximate grant date fair value equal to $2 million. The Transition Grant Award Agreement will be consistent with the Company’s applicable form agreement(s), except as otherwise specified herein. The Transition Grant will vest in five substantially equal installments of 20% during the two-year period following the Effective Date, with the first tranche to vest on the grant date and the remaining four tranches to vest in equal installments on the first four six-month anniversaries of the Effective Date thereafter. If your employment with the Company is terminated without Cause or you resign for Good Reason prior to the Transition Grant becoming fully-vested, then the Transition Grant will accelerate and become fully-vested and payable upon such termination of employment. The Transition Grant will be approved by the Compensation Committee of the Board of Directors of the Company (the “Board”) and granted effective as of August 24, 2023. 3. A cash bonus equal to at least 10% of your then-current base salary but no more than 50% of

your then-current base salary (the “Transition Success Bonus”), to be paid within 10 days following the date on which an incoming Chief Executive Officer of the Company commences employment, including the Board’s designation of Marietta Zakas to continue in the role of Chief Executive Officer following completion of the applicable search process (the “Permanent CEO Transition Date”), subject to your continued employment through such date. The actual amount of the Transition Success Bonus will be determined by the Board or the Compensation Committee in its discretion in connection with the Permanent CEO Transition Date. 4. If your employment with the Company is terminated without Cause or you resign for Good Reason within two years following the Permanent CEO Transition Date, your termination will be considered a Qualifying Termination pursuant to Section 2.2 of the CIC Agreement. In addition, Section 2.3(c) of the CIC Agreement is hereby amended to replace “two (2)” with “three (3)” where it appears therein. The Company shall withhold all applicable federal, state and local taxes, social security and workers’ compensation contributions and other amounts as may be required by law with respect to compensation payable pursuant to this letter. The Company also agrees to reimburse your reasonable legal fees incurred in connection with reviewing this letter and related compensation arrangements. Except as expressly amended by this letter, all terms and conditions of the Employment Agreement and CIC Agreement shall remain in full force and effect. This letter shall be construed in accordance with the internal laws of the State of Georgia, without regard to the conflict of law provisions of any state. This letter may be executed in two or more counterparts, each of which shall be deemed to be an original, but all of which together shall constitute one and the same instrument. [Signature Page Follows]

MUELLER WATER PRODUCTS, INC. __________________________________ Name: ____________________________ Title:_____________________________ ACCEPTED AND AGREED: _______________________________________ Steven Heinrichs