Exhibit 99.1

Xylem Inc.

1 International Drive, Rye Brook N.Y. 10573

Tel +1.914.323.5700 Fax +1.914.696.2960

Xylem Inc. reports solid first quarter earnings

RYE BROOK, N.Y., April 30, 2015 – Xylem Inc. (NYSE: XYL), a leading global water technology company dedicated to solving the world’s most challenging water issues, today reported first quarter 2015 net income of $64 million, or $0.35 per share. Excluding the gain from the sale of businesses, restructuring and realignment charges and other special items, adjusted net income was $60 million or $0.33 per share, a decrease of one cent or three percent from the comparable period in 2014. First quarter revenue was $837 million, up one percent organically, reflecting strength in emerging markets and the U.S. First quarter adjusted operating margin improved 40 basis points, driven by increased operating efficiencies and lower expenses.

“We are off to a solid start in 2015 as we continue to advance our strategy,” said Patrick Decker, President and Chief Executive Officer of Xylem. “We saw continued strength in emerging markets and growing momentum in the U.S. Our Water Infrastructure segment generated solid growth in orders during the quarter, including double-digit growth in treatment orders. A great example is the $16 million order we secured to upgrade the drinking water treatment plants and distribution systems of a Canadian municipality.”

Decker continued, “Despite the ongoing negative impact of foreign exchange translation, the fundamentals of our core business continue to improve. This was evident in our ability to drive a nine-percent increase in year-over-year adjusted earnings per share in the first quarter, excluding these foreign exchange headwinds. Looking ahead, we will focus on accelerating operational improvements as we continue to strengthen key capabilities in the organization.”

During the first quarter 2015, Xylem repurchased 1.4 million shares of common stock under its stock repurchase program for an aggregate purchase price of $50 million. As of March 31, 2015, Xylem had approximately $50 million remaining under its current stock repurchase authorizations.

Full-year 2015 Outlook

Xylem is maintaining its operational outlook for its full-year guidance. The Company, however, is adjusting its 2015 guidance to reflect the significant foreign exchange fluctuations that have occurred since the Company’s previous forecast was announced in February. As a result of the projected unfavorable impact of foreign exchange translation, Xylem now expects full-year 2015 revenue of approximately $3.7 billion, a decrease of seven to eight percent from the full-year 2014 results. On an organic basis, Xylem continues to anticipate revenue growth in the range of one to three percent.

Full-year 2015 adjusted operating income is now expected to be in the range of $469 to $494 million, resulting in adjusted earnings per share of $1.80 to $1.90. Excluding the projected unfavorable impact of foreign exchange translation, Xylem’s adjusted earnings per share growth expectations remain unchanged in the range of five to 10 percent over the comparable full-year 2014 results. The Company’s outlook for projected restructuring and realignment costs of $20 million for the year also remains unchanged.

First Quarter Segment Results

Water Infrastructure

Xylem’s Water Infrastructure segment consists of its businesses serving clean water delivery, wastewater transport and treatment, dewatering and analytical instrumentation.

Applied Water

Xylem’s Applied Water segment consists of its portfolio of businesses in residential and commercial building services, and industrial and agricultural applications.

Supplemental information on Xylem’s first quarter earnings and reconciliations for non-GAAP items are posted at http://investors.xyleminc.com.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The Company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, New York, with 2014 revenues of $3.9 billion and approximately 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability Index for the last three years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all – that which occurs in nature. For more information, please visit us at www.xylem.com.

Forward-Looking Statements

This press release contains information that may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Act of 1995. Forward-looking statements by their nature address matters that are, to different degrees, uncertain. Generally, the words “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “forecast,” “believe,” “target,” “will,” “could,” “would,” “should” and similar expressions identify forward-looking statements, which generally are not historical in nature. However, the absence of these words or similar expressions does not mean that a statement is not forward-looking. These forward-looking statements include statements about the capitalization of the Company, the Company’s restructuring and realignment, future strategic plans and other statements that describe the Company’s business strategy, outlook, objectives, plans, intentions or goals. All statements that address operating or financial performance, events or developments that we expect or anticipate will occur in the future – including statements relating to orders, revenue, operating margins and earnings per share growth, and statements expressing general views about future operating results – are forward-looking statements. Forward-looking statements involve known and unknown risks, uncertainties and other important factors that could cause actual results to differ materially from those expressed or implied in, or reasonably inferred from, such forward-looking statements.

Factors that could cause results to differ materially from those anticipated include: economic, political and other risks associated with our international operations, including military actions, economic sanctions or trade embargoes that could affect customer markets, and non-compliance with laws, including foreign corrupt practice laws, export and import laws and competition laws; potential for unexpected cancellations or delays of customer orders in our reported backlog; our exposure to fluctuations in foreign currency exchange rates; competition and pricing pressures in the markets we serve; the strength of housing and related markets; weather conditions; ability to retain and attract key members of management; our relationship with and the performance of our channel partners; our ability to borrow or to refinance our existing indebtedness and availability of liquidity sufficient to meet our needs; changes in the value of goodwill or intangible assets; risks relating to product defects, product liability and recalls; governmental investigations; security breaches or other disruptions of our information technology systems; litigation and contingent liabilities; and other factors set forth under “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2014 and with subsequent filings we make with the Securities and Exchange Commission.

All forward-looking statements made herein are based on information available to the Company as of the date of this press release. The Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

XYLEM INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED INCOME STATEMENTS (Unaudited)

(in millions, except per share data)

XYLEM INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)

(in millions, except per share amounts)

XYLEM INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

(in millions)

Xylem Inc. Non-GAAP Measures

Management views key performance indicators including revenue, gross margins, segment operating income and margins, orders growth, free cash flow, working capital, and backlog, among others. In addition, we consider certain measures to be useful to management and investors evaluating our operating performance for the periods presented, and provide a tool for evaluating our ongoing operations, liquidity and management of assets. This information can assist investors in assessing our financial performance and measures our ability to generate capital for deployment among competing strategic alternatives and initiatives. These metrics, however, are not measures of financial performance under GAAP and should not be considered a substitute for revenue, operating income, net income, earnings per share (basic and diluted) or net cash from operations as determined in accordance with GAAP. We consider the following non-GAAP measures, which may not be comparable to similarly titled measures reported by other companies, to be key performance indicators:

“Organic revenue” and “Organic orders” defined as revenue and orders, respectively, excluding the impact of foreign currency fluctuations and contributions from acquisitions and divestitures. Divestitures include sales of portions of our business that did not meet the criteria for classification as a discontinued operation or insignificant portions of our business that we did not classify as a discontinued operation. The period-over-period change resulting from foreign currency fluctuations assumes no change in exchange rates from the prior period.

“Constant currency” defined as financial results adjusted for currency translation impacts by translating current period and prior period activity using the same currency conversion rate. This approach is used for countries whose functional currency is not the U.S. dollar.

“EBITDA” defined as earnings before interest, taxes, depreciation, amortization expense, and share-based compensation. “Adjusted EBITDA” reflects the adjustment to EBITDA to exclude restructuring and realignment costs, gain on sale of business and special charges.

“Adjusted Operating Income”, “Adjusted Segment Operating Income”, and “Adjusted EPS” defined as operating income, segment operating income and earnings per share, adjusted to exclude restructuring and realignment costs, gain on sale of businesses, special charges and tax-related special items, as applicable.

“Free Cash Flow” defined as net cash from operating activities, as reported in the Statement of Cash Flow, less capital expenditures as well as adjustments for other significant items that impact current results which management believes are not related to our ongoing operations and performance. Our definition of free cash flows does not consider non-discretionary cash payments, such as debt.

“Realignment costs” defined as costs not included in restructuring costs that are incurred as part of actions taken to reposition our business, including items such as professional fees, severance, relocation, travel, facility set-up and other costs.

“Special charges” defined as costs incurred by the Company, such as legal and professional fees, associated with the Korea matters, as well as costs incurred for the contractual indemnification of tax obligations to ITT.

Xylem Inc. Non-GAAP Reconciliation

Reported vs. Organic & Constant Currency Order Growth

($ Millions)

Xylem Inc. Non-GAAP Reconciliation

Reported vs. Organic & Constant Currency Revenue

($ Millions)

Xylem Inc. Non-GAAP Reconciliation

Adjusted Operating Income

($ Millions)

Xylem Inc. Non-GAAP Reconciliation

Adjusted Diluted EPS

($ Millions, except per share amounts)

Xylem Inc. Non-GAAP Reconciliation

Net Cash – Operating Activities vs. Free Cash Flow

($ Millions)