Exhibit 99.1

WATTS WATER TECHNOLOGIES REPORTS SECOND QUARTER RESULTS FOR 2015, ANNOUNCES SALE OF CERTAIN NON-CORE PRODUCT LINES AND ANNOUNCES $100 MILLION SHARE REPURCHASE PROGRAM

·                  Reported sales of $386.9M

·                  Adjusted operating margin improvement of 60 basis points to 10.9%; GAAP  operating margin was 9.0%

·                  Adjusted EPS of $0.69; GAAP EPS of $0.55

·                  Foreign currency exchange rates negatively affected revenue growth by 7.1% and EPS by $0.07

·                  Year-to-date free cash flow increased by 269%

·                  Signed definitive agreement to sell certain Americas non-core product lines for approximately $35.5M

·                  Announced $100 million share repurchase program

North Andover, MA….July 29, 2015.  Watts Water Technologies, Inc. (NYSE: WTS) today announced second quarter sales of $386.9 million, a decrease of 2.3%, as compared to the same period last year. Second quarter net income per diluted share (EPS) was $0.55 as compared to $0.60 for the second quarter of 2014.  Adjusted for special items, second quarter adjusted EPS was $0.69, flat with the same period last year. A summary of second quarter financial results is as follows:

Second Quarter Highlights:

·                  Reported sales decreased by 2.3%, organic sales decreased by 3.4% and excluding the effect of the Company’s previously announced Americas product rationalization initiative, sales declined 1.4%.

·                  Organic sales declines of 3.8% in the Americas and 4.1% in Europe, the Middle East and Africa (EMEA) were partially offset by organic sales growth in Asia-Pacific of 14.6%.

·                  Excluding the effect of the Company’s previously announced product rationalization initiative, Americas’ organic sales were flat, negatively impacted by south-central US flooding issues. AERCO sales were $32.4 million in the quarter.

·                  Adjusted operating margin increased by 0.6 percentage points to 10.9% as compared to the second quarter of 2014.  Favorable product mix, strong productivity and other cost savings initiatives more than offset lower sales volume, plant under absorption and anticipated higher G&A expenses; operating margins on a GAAP basis decreased 0.2 percentage points to 9.0% in the second quarter of 2015 as compared to the same period last year.

·                  Adjusted 2015 second quarter EPS was $0.69, flat as compared to the prior year. Stronger operating profits were offset by higher interest charges and a higher effective tax rate.  Foreign currency negatively impacted quarterly earnings by $0.07.  AERCO contributed $0.09 of adjusted EPS in the second quarter of 2015.

·                  Free cash flow for the six months ended June 2015 was $29.5 million, a 269% increase compared to the same period last year, primarily driven by reduced inventory levels.

·                  Announced the signing of a definitive agreement with Sioux Chief Mfg. Co. (“Sioux Chief”) to sell certain assets related to Watts’ brass fittings, brass & tubular and vinyl tubing product lines.  The selling price approximates $35.5 million and the transaction is expected to close by the end of the third quarter.  The consummation of the sale with Sioux Chief is subject to customary closing conditions.

·                  The Company is announcing that its Board of Directors has authorized the repurchase of up to $100 million of the Company’s Class A Common Stock from time to time on the open market or in privately negotiated transactions.  The timing and number of any shares repurchased will be determined by the Company’s management based on its evaluation of market conditions.

·                  The Company repurchased approximately 185 thousand shares of Company stock during the second quarter, at a cost of $10.1 million, as part of the previously announced share repurchase program.

Note: Organic sales growth excludes the impacts of acquisitions, divestitures and foreign exchange from year-to-year comparisons

Robert J. Pagano Jr., Chief Executive Officer, commented, “We are pleased with the progress we made in the second quarter.  Despite known sales headwinds, we expanded adjusted operating margins in the quarter by 60 basis points through favorable product mix, stronger productivity and continued benefits from cost savings initiatives.  As expected, our top line growth remained challenged by weak EMEA activity and slower than anticipated growth in the Americas.  We continue to drive our transformation initiatives and today we announced an agreement to sell certain product lines to Sioux Chief.  This transaction corresponds to Phase 1 of the Americas transformation effort.  We expect next quarter to announce our roadmap for Phase 2 of the Americas transformation. Overall, we are pleased with transformation progress to date, which we believe should drive margin expansion in 2016 and beyond.”

Commenting on the stock repurchase program, Mr. Pagano said, “This action reflects our ongoing commitment to enhance shareholder value and to execute our balanced cash allocation strategy. We expect to use available cash to fund this program.  We remain committed to our long-term growth strategy of growing the business organically and through acquisitions and we are comfortable that we will continue to have sufficient capital available to us to fund future acquisitions.”

For a reconciliation of GAAP to non-GAAP items and a statement regarding the usefulness of these measures to investors and management in evaluating our operating performance, please see the tables attached to this press release.

Watts Water Technologies, Inc. will hold a live web cast of its conference call to discuss second quarter results for 2015 on Thursday, July 30, 2015, at 9:00 a.m. Eastern Time. This press release and the live web cast can be accessed by visiting the Investor Relations section of the Company’s website at www.wattswater.com. Following the web cast, an archived version of the call will be available at the same address until July 30, 2016.

Watts Water Technologies, Inc., through its subsidiaries, is a world leader in the manufacture of innovative products to control the efficiency, safety, and quality of water within residential, commercial, and institutional applications. Its expertise in a wide variety of water technologies enables it to be a comprehensive supplier to the water industry.

This Press Release includes “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995, including statements relating to the expected closing of the sale to Sioux Chief, the announcement of our Phase 2 roadmap for the Americas, our expectations for margin growth, our capital requirements and our long-term growth strategy.  These forward-looking statements reflect our current views about future events.  You should not rely on forward-looking statements because our actual results may differ materially from those predicted as a result of a number of potential risks and uncertainties.  These potential risks and uncertainties include, but are not limited to: failure to meet customary closing conditions, including the receipt of necessary consents, in connection with the sale to Sioux Chief; the

effectiveness, the timing and the expected costs and savings associated with our ongoing restructuring and transformation programs and initiatives; the current economic and financial condition, which can affect the housing and construction markets where our products are sold, manufactured and marketed; shortages in and pricing of raw materials and supplies; our ability to compete effectively; changes in variable interest rates on our borrowings; failure to expand our markets through acquisitions; failure to successfully develop and introduce new product offerings or enhancements to existing products; failure to manufacture products that meet required performance and safety standards; foreign exchange rate fluctuations; cyclicality of industries where we market our products, such as plumbing and heating wholesalers and home improvement retailers; environmental compliance costs; product liability risks; changes in the status of current litigation; and other risks and uncertainties discussed under the heading “Item 1A. Risk Factors” and in Note 14 of the Notes to the Consolidated Financial Statements in our Annual Report on Form 10-K for the year ended December 31, 2014 filed with the SEC and our subsequent filings with the SEC.  We undertake no duty to update the information contained in this Press Release, except as required by law.

WATTS WATER TECHNOLOGIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(Amounts in millions, except per share information)

(Unaudited)

WATTS WATER TECHNOLOGIES, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Amounts in millions, except share information)

(Unaudited)

WATTS WATER TECHNOLOGIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in millions)

(Unaudited)

WATTS WATER TECHNOLOGIES, INC. AND SUBSIDIARIES

SEGMENT INFORMATION

(Amounts in millions)

(Unaudited)

Net Sales

Operating Income (Loss)

Intersegment Sales

*Americas second quarter and first six months 2015 results include the AERCO acquisition

Key Performance Indicators and Non-GAAP Measures

In this press release we refer to non-GAAP financial measures (including adjusted operating income, adjusted operating income excluding the AERCO acquisition, adjusted operating margins, adjusted operating margins excluding the AERCO acquisition, adjusted net income, adjusted earnings per share, adjusted earnings per share excluding the AERCO acquisition, free cash flow, net debt to capitalization ratio and the cash conversion rate of free cash flow to net income) and provide a reconciliation of those non-GAAP financial measures to the corresponding financial measures contained in our consolidated financial statements prepared in accordance with GAAP. We believe that these financial measures are appropriate to enhance an overall understanding of our historical financial performance and future prospects. Adjusted operating income, adjusted operating margins, adjusted net income and adjusted earnings per share eliminate certain expenses incurred in the periods presented that relate primarily to our global restructuring programs, deployment costs, acquisition costs, purchase accounting adjustments and related tax benefits. Adjusted operating income, operating margins and earnings per share excluding the AERCO acquisition eliminate the acquisition results from our consolidated results since the date of acquisition. Management then utilizes these adjusted financial measures to assess the run-rate of the Company’s continuing operations against those of comparable periods without the distortion of those factors.  Free cash flow and the net debt to capitalization ratio, which are adjusted to exclude certain cash inflows and outlays, and include only certain balance sheet accounts from the comparable GAAP measures, are an indication of our performance in cash flow generation and also provide an indication of the Company’s relative balance sheet leverage to other industrial manufacturing companies. The cash conversion rate of free cash flow to net income is also a measure of our performance in cash flow generation. These non-GAAP financial measures are among the primary indicators management uses as a basis for evaluating our cash flow generation and our capitalization structure. In addition, free cash flow is used as a criterion to measure and pay certain compensation-based incentives. For these reasons, management believes these non-GAAP financial measures can be useful to investors, potential investors and others. The Company’s non-GAAP financial measures may not be comparable to similarly titled measures reported by other companies. The presentation of this additional information is not meant to be considered in isolation or as a substitute for financial measures prepared in accordance with GAAP.

TABLE 1

RECONCILIATION OF GAAP “AS REPORTED” TO THE “ADJUSTED” NON-GAAP

EXCLUDING THE EFFECT OF ADJUSTMENTS FOR SPECIAL ITEMS

(Amounts in millions, except per share information)

(Unaudited)

CONSOLIDATED RESULTS

TABLE 2

RECONCILIATION OF ADJUSTED OPERATING INCOME, MARGINS AND EARNINGS PER SHARE TO ADJUSTED OPERATING INCOME, MARGINS AND EARNINGS PER SHARE EXCLUDING THE AERCO ACQUISITION

(Amounts in millions)

(Unaudited)

TABLE 3

SEGMENT INFORMATION - RECONCILIATION OF GAAP “AS REPORTED” TO THE “ADJUSTED” NON-GAAP

EXCLUDING THE EFFECT OF ADJUSTMENTS FOR SPECIAL ITEMS

(Amounts in millions)

(Unaudited)