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These shares were sold in multiple transactions at prices ranging from $23.650 to $23.700, inclusive. The reporting person undertakes to provide to Mueller Water Products, Inc. (the \"Company\"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 9.849 shares acquired under the Employee Stock Purchase Plan (\"ESPP\")."}],"balance_after":54479.9413,"source":{"system":"sec-edgar","filing":"0001225208-26-007666","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1729377/000122520826007666/doc4.xml","form_type":"4"}},{"id":670955,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":17889,"kind":"person","name":"Ortiz Christine","position":1,"cik":"0001764692","reported_name":"Ortiz Christine","relationship":{"director":true}}],"security":"Common Stock","published_at":"2026-09-01T21:31:04.000Z","date":"2026-09-01","kind":"sale","planned":true,"acquired":false,"shares":550,"price":23.93,"value":13161.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 1, 2026."}],"balance_after":30274,"source":{"system":"sec-edgar","filing":"0001225208-26-007496","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1350593/000122520826007496/doc4.xml","form_type":"4"}},{"id":671896,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":17889,"kind":"person","name":"Ortiz Christine","position":1,"cik":"0001764692","reported_name":"Ortiz Christine","relationship":{"director":true}}],"security":"Common Stock","published_at":"2026-08-31T20:57:19.000Z","date":"2026-08-31","kind":"sale","planned":true,"acquired":false,"shares":12048,"price":24.2253,"value":291866.4144,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 1, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $24.140 to $24.260, inclusive. The reporting person undertakes to provide to Mueller Water Products, Inc. (the \"Company\"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote."}],"balance_after":30824,"source":{"system":"sec-edgar","filing":"0001225208-26-007405","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1350593/000122520826007405/doc4.xml","form_type":"4"}},{"id":675284,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":19601,"kind":"person","name":"Feyerherm Richelle R.","position":1,"cik":"0002083713","reported_name":"Feyerherm Richelle R.","relationship":{"officer":true,"officer_title":"VP, CAO and Corp. 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These shares were sold in multiple transactions at prices ranging from $26.300 to $26.480, inclusive. The reporting person undertakes to provide to Mueller Water Products, Inc. (the \"Company\"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote."}],"balance_after":42556,"source":{"system":"sec-edgar","filing":"0001225208-26-007049","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1956000/000122520826007049/doc4.xml","form_type":"4"}},{"id":712843,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":31462,"kind":"person","name":"Healy Brian C.","position":1,"cik":"0002012616","reported_name":"Healy Brian C.","relationship":{"director":true}}],"security":"Common Stock","published_at":"2026-07-08T21:35:47.000Z","date":"2026-07-07","kind":"purchase","planned":true,"acquired":true,"shares":1183,"price":25.33,"value":29965.39,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The purchase reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 11, 2026."}],"balance_after":24946,"source":{"system":"sec-edgar","filing":"0001225208-26-006544","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2012616/000122520826006544/doc4.xml","form_type":"4"}},{"id":743259,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":39694,"kind":"person","name":"Floyd Scott P.","position":1,"cik":"0001813939","reported_name":"Floyd Scott P.","relationship":{"officer":true,"officer_title":"EVP & Chief Commercial Officer"}}],"security":"Common Stock","published_at":"2026-06-11T00:36:24.000Z","date":"2026-06-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":5907,"price":25.37,"value":149860.59,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares were withheld to cover the tax liability on the lapse of the restrictions on restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 12,086.04 shares acquired under the Mueller Water Products, Inc. Employee Stock Purchase Plan."}],"balance_after":107678.7287,"source":{"system":"sec-edgar","filing":"0001225208-26-005912","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1813939/000122520826005912/doc4.xml","form_type":"4"}},{"id":758576,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":43142,"kind":"person","name":"ZAKAS MARIETTA EDMUNDS","position":1,"cik":"0001191471","reported_name":"ZAKAS MARIETTA EDMUNDS","relationship":{"director":true,"officer":true,"officer_title":"Former Officer and Director"}}],"security":"Common Stock","published_at":"2026-05-29T21:32:41.000Z","date":"2026-05-28","kind":"sale","planned":true,"acquired":false,"shares":54254,"price":25.2624,"value":1370586.2496,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $25.080 to $25.725, inclusive. The reporting person undertakes to provide to Mueller Water Products, Inc. (the \"Company\"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 1,890.16 shares acquired under the Mueller Water Products, Inc. Employee Stock Purchase Plan."}],"balance_after":479867.9554,"source":{"system":"sec-edgar","filing":"0001225208-26-005653","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1191471/000122520826005653/doc4.xml","form_type":"4"}},{"id":775388,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":31462,"kind":"person","name":"Healy Brian C.","position":1,"cik":"0002012616","reported_name":"Healy Brian C.","relationship":{"director":true}}],"security":"Common Stock","published_at":"2026-05-18T21:49:46.000Z","date":"2026-05-15","kind":"purchase","planned":true,"acquired":true,"shares":1166,"price":25.7451,"value":30018.7866,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The purchase reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 11, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is an average price. These shares were purchased in multiple transactions at prices ranging from $25.740 to $25.830, inclusive. The reporting person undertakes to provide to Mueller Water Products, Inc. (the \"Company\"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote."}],"balance_after":23763,"source":{"system":"sec-edgar","filing":"0001225208-26-005467","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2012616/000122520826005467/doc4.xml","form_type":"4"}},{"id":837238,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":2327,"kind":"person","name":"Helms Todd P","position":1,"cik":"0001729377","reported_name":"Helms Todd P","relationship":{"officer":true,"officer_title":"SVP and CHRO"}}],"security":"Common Stock","published_at":"2026-03-17T22:28:49.000Z","date":"2026-03-17","kind":"sale","planned":true,"acquired":false,"shares":10720,"price":27.6075,"value":295952.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $27.340 to $27.885, inclusive. The reporting person undertakes to provide to Mueller Water Products, Inc. (the \"Company\"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 9.79 shares acquired under the Employee Stock Purchase Plan (\"ESPP\")."}],"balance_after":64476.8869,"source":{"system":"sec-edgar","filing":"0001225208-26-003750","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1350593/000122520826003750/doc4.xml","form_type":"4"}},{"id":860975,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":62781,"kind":"person","name":"Rasmussen Melissa","position":1,"cik":"0001782487","reported_name":"Rasmussen Melissa","relationship":{"officer":true,"officer_title":"SVP and CFO"}}],"security":"Common Stock","published_at":"2026-03-04T22:35:41.000Z","date":"2026-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":3341,"price":29.36,"value":98091.76,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares were withheld to cover the tax liability on the lapse of the restrictions on restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 1,322.33 shares acquired under the Mueller Water Products, Inc. Employee Stock Purchase Plan."}],"balance_after":9114.3257,"source":{"system":"sec-edgar","filing":"0001225208-26-003142","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1350593/000122520826003142/doc4.xml","form_type":"4"}},{"id":879392,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":239,"kind":"person","name":"SENGSTACK GREGG C","position":1,"cik":"0001189242","reported_name":"SENGSTACK GREGG C","relationship":{"director":true}}],"security":"Common Stock","published_at":"2026-02-26T23:40:35.000Z","date":"2026-02-25","kind":"purchase","planned":false,"acquired":true,"shares":25000,"price":29.5766,"value":739415.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is an average price. These shares were purchased in multiple transactions at prices ranging from $29.410 to $29.863, inclusive. The reporting person undertakes to provide to Mueller Water Products, Inc. (the \"Company\"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote."}],"balance_after":25000,"source":{"system":"sec-edgar","filing":"0001225208-26-002707","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1189242/000122520826002707/doc4.xml","form_type":"4"}},{"id":885141,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":39694,"kind":"person","name":"Floyd Scott P.","position":1,"cik":"0001813939","reported_name":"Floyd Scott P.","relationship":{"officer":true,"officer_title":"EVP & Chief Commercial Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-02-24T22:05:12.000Z","date":"2026-02-23","kind":"grant","planned":false,"acquired":true,"shares":2979,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The stock options will vest in three (3) equal, annual installments on the anniversary of the grant date."}],"balance_after":2979,"derivative":{"exercise_price":29.59,"expiration_date":"2036-02-23","underlying":"Common Stock","underlying_shares":2979},"source":{"system":"sec-edgar","filing":"0001225208-26-002518","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1813939/000122520826002518/doc4.xml","form_type":"4"}},{"id":885140,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":39694,"kind":"person","name":"Floyd Scott P.","position":1,"cik":"0001813939","reported_name":"Floyd Scott P.","relationship":{"officer":true,"officer_title":"EVP & Chief Commercial Officer"}}],"security":"Restricted Stock Unit","published_at":"2026-02-24T22:05:12.000Z","date":"2026-02-23","kind":"grant","planned":false,"acquired":true,"shares":1056,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Acquisition is pursuant to grant of restricted stock units under the Mueller Water Products, Inc. Third Amended and Restated 2006 Stock Incentive Plan. Each restricted stock unit represents a contingent right to receive one (1) share of Mueller Water Products, Inc. Common Stock when the restrictions lapse. The lapse occurs in three (3) equal, annual installments beginning on the first anniversary of the grant date."}],"balance_after":36607,"source":{"system":"sec-edgar","filing":"0001225208-26-002518","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1813939/000122520826002518/doc4.xml","form_type":"4"}},{"id":890358,"issuer":{"id":2326,"kind":"organization","name":"Mueller Water Products, Inc.","symbol":"MWA"},"owners":[{"id":2327,"kind":"person","name":"Helms Todd P","position":1,"cik":"0001729377","reported_name":"Helms Todd P","relationship":{"officer":true,"officer_title":"SVP and CHRO"}}],"security":"Common Stock","published_at":"2026-02-20T22:02:38.000Z","date":"2026-02-19","kind":"sale","planned":true,"acquired":false,"shares":10720,"price":29.7153,"value":318548.016,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $29.560 to $30.025, inclusive. The reporting person undertakes to provide to Mueller Water Products, Inc. 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Third Amended and Restated 2006 Stock Incentive Plan. Each restricted stock unit represents a contingent right to receive one (1) share of Mueller Water Products, Inc. Common Stock when the restrictions lapse. 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