Watts Water Technologies Investor Presentation — November 2021

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November 3, 2021 © 2021 Watts Water Technologies, Inc. 1

© 2021 Watts Water Technologies, Inc.Watts Water Technologies

3Q 2021 Earnings Conference Call

November 4, 2021November 3, 2021 © 2021 Watts Water Technologies, Inc. 2

Forward Looking Statements

Certain statements inthispresentation constitute forward -looking statements within themeaning ofthePrivate Securities

Litigation Reform Actof1995 .

These statements arerelated toforecasts ofsales, margins, earnings, earnings pershare, capital expenditures, water

market growth, acquisition strategy, theimpact oftheCOVID -19pandemic, supply chain disruptions andmanagement goals

Watts cautions investors thatanysuch forward -looking statements made byWatts arenotguarantees offuture performance .

Allforward -looking statements aresubject toknown and unknown risks, uncertainties, and contingencies, many that are

beyond thecontrol ofWatts, which may cause actual results, performance orachievements todiffer materially from

anticipated future results, performance orachievements expressed orimplied bytheforward -looking statements .

Factors thatmight affect forward -looking statements include overall economic andbusiness conditions, competitive factors,

changes inlaws affecting Watts, future acquisitions ofmaterial assets orbusinesses byWatts, thedemand forWatts’

products andservices andother factors identified in“Item 1A.Risk Factors” inourQuarterly Report onForm 10-Qforthe

quarter ended June 27,2021 ,inourmost recent Annual Report onForm 10-Kandinsubsequent reports filed withtheSEC.November 3, 2021 © 2021 Watts Water Technologies, Inc. 3

Solid 3Q Performance; R&R Market Remains Resilient 3Q Performance

•Record results; maintained customer focus

•Revenue growth in all regions driven by economic recovery

•Expanded adjusted operating margin; YTD free cash flow ahead of prior year

•Purchased Sentinel Hydrosolutions LLC in 4Q; annual sales ~$6M; broadening leak

•Supply chain / logistics remain challenging; prioritizing customer order fulfillment

•North American residential / commercial R&R strong and single -family residential

new construction solid

•Europe and APMEA markets resilient

•Raising full year sales outlook

See Appendix for reconciliation of non -GAAP measures to their corresponding GAAP measures November 3, 2021 © 2021 Watts Water Technologies, Inc. 4

3Q 2021 Financial Summary

Recovery Continues to Drive Demand* See Appendix for reconciliation of non -GAAP measures to their corresponding GAAP measures Sales ($M) Adj. Operating Margin %* Adj. EPS* YTD FCF* ($M)