The undersigned, Geri-michelle McShane, does hereby nominate, constitute and
appoint each of Claudia Toussaint, Kelly O'Shea, Juliene Patton and Kimberly
Rehm as her true and lawful attorney and agent to do any and all acts and things
and execute and file any and all instruments which said attorneys and agents may
deem necessary or advisable to enable the undersigned (in her individual
capacity or in any other capacity) to comply with the Securities Exchange Act of
1934 (the "34 Act") and the Securities Act of 1933 (the "33 Act") and any
requirements of the Securities and Exchange Commission (the "SEC") in respect
thereof, in connection with the preparation, execution and/or filing of (i) any
report or statement of beneficial ownership or changes in beneficial ownership
of securities of Xylem Inc., an Indiana corporation (the "Company"), that the
undersigned (in her individual capacity or in any other capacity) may be
required to file pursuant to Section 16(a) of the 34 Act, including any report
or statement on Form 3, Form 4 or Form 5, or to any amendment thereto, (ii) any
report or notice required under Rule 144 of the 33 Act, including Form 144, or
any amendment thereto relating to the undersigned's role with, or beneficial
ownership of, the Company's securities, and (iii) any and all other documents or
instruments that may be necessary or desirable in connection with or in
furtherance of any of the foregoing, including Form ID, or any amendments
thereto, and any other documents necessary or appropriate to obtain codes and
passwords enabling the undersigned to make electronic filings with the SEC of
reports required pursuant to Section 16(a) of the 34 Act or any rule or
regulation of the SEC, such power and authority to extend to any form or forms
adopted by the SEC in lieu of or in addition to any of the foregoing and to
include full power and authority to sign the undersigned's name in her
individual capacity or otherwise, hereby ratifying and confirming all that said
attorneys and agents, or any of them, shall do or cause to be done by virtue
thereof.

This authorization shall supersede all prior authorizations to act for the
undersigned with respect to securities of the Company in such matters, which
prior authorizations are hereby revoked, and shall remain in effect until the
undersigned is no longer required to file Form 3, 4 or 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company
unless earlier revoked, by the undersigned in a signed writing delivered to the
foregoing attorneys in fact.

IN WITNESS WHEREOF, I have hereunto set my hand this 30th day of January 2019.