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Schedule II-Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2021
Schedule II-Valuation and Qualifying Accounts |
Schedule II-Valuation and Qualifying Accounts | Watts Water Technologies, Inc. and Subsidiaries Schedule II—Valuation and Qualifying Accounts (Amounts in millions) ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Balance At |  | Additions |  | Foreign |  | ​ |  | Balance At
​ | ​ | Beginning of | ​ | Charged To | ​ | Exchange/Acquisitions | ​ | ​ | ​ | End of
​ |  | Period |  | Expense |  | Impact |  | Deductions |  | Period
Year Ended December 31, 2019 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Accounts Receivable Reserve Allowances | ​ | $ | 15.0 | ​ | $ | 2.2 |  | — | ​ | (2.9) | ​ | $ | 14.3
Reserve for excess and obsolete inventories | ​ | $ | 24.4 | ​ | $ | 6.6 |  | (0.1) | ​ | (5.9) | ​ | $ | 25.0
Year Ended December 31, 2020 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Accounts Receivable Reserve Allowances | ​ | $ | 14.3 | ​ | $ | 1.1 |  | 0.9 | ​ | (5.2) | ​ | $ | 11.1
Reserve for excess and obsolete inventories | ​ | $ | 25.0 | ​ | $ | 13.3 |  | 1.4 | ​ | (6.3) | ​ | $ | 33.4
Year Ended December 31, 2021 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Accounts Receivable Reserve Allowances | ​ | $ | 11.1 | ​ | $ | 3.4 |  | (0.2) | ​ | (4.0) | ​ | $ | 10.3
Reserve for excess and obsolete inventories | ​ | $ | 33.4 | ​ | $ | 8.7 |  | (0.9) | ​ | (8.2) | ​ | $ | 33.0
​

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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