Evoqua Water Technologies : 2022 Proxy Statement

2022 NOTICE OF ANNUAL MEETING AND

PROXY STATEMENT

January 5, 2022

To the Stockholders of Evoqua Water Technologies Corp.:

You are cordially invited to attend the Annual Meeting of Stockholders of Evoqua Water Technologies Corp. (the "Company") for the fiscal year ended September 30, 2021 (the "Annual Meeting") to be held virtually via live webcast on Wednesday, February 16, 2022, at 1:00 p.m. (Eastern Time). You can attend and participate in the Annual Meeting online, vote your shares electronically, and submit your questions during the Annual Meeting by visiting www.virtualshareholdermeeting.com/AQUA2022.

We have decided to hold the Annual Meeting virtually again this year due to the ongoing COVID-19 pandemic in order to protect the health and well-being of our stockholders and employees, and because hosting a virtual Annual Meeting (i) enables stockholders to attend and participate from any location around the world,

1. provides for cost savings to the Company and our stockholders, and (iii) reduces the environmental impact of our Annual Meeting.

At the Annual Meeting you will be asked to (i) elect three Class I director nominees for three-year terms,

1. approve, on an advisory basis, the compensation of our named executive officers, (iii) ratify the appointment of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending September 30, 2022, and (iv) transact any other business that may properly come before the Annual Meeting or any adjournment or postponement thereof.

Your vote is important to us. Whether or not you plan to participate in the Annual Meeting, it is important that your shares be represented and voted. We encourage you to vote promptly and submit your proxy via the internet, by telephone, or by completing and mailing a proxy card. Instructions on how to vote are found in the section entitled "Q&A-InformationAbout the Annual Meeting" in the Proxy Statement.

Lastly, I would like to acknowledge and thank Judd Gregg, Brian Hoesterey, and Vinay Kumar for their service and contributions to the Company as members of our Board of Directors (the "Board"). Judd is retiring as a director at the end of his current term at the Annual Meeting, in accordance with the retirement policy in our Corporate Governance Guidelines. Brian and Vinay, both principals of the Company's former private equity sponsor, AEA Investors LP ("AEA"), stepped down from our Board following AEA's full divestiture of its ownership position in the Company in 2021. Judd, Brian, and Vinay all have served as members of our Board since Evoqua's inception in 2014. The Company has benefited greatly from their counsel and guidance, and we express our sincere appreciation for their dedication and leadership during their years with us.

On behalf of the Company and the Board, we thank you for your continued support and interest in Evoqua Water Technologies Corp.

Sincerely,

Ron C. Keating

President,

Chief Executive Officer and

Director

								Pittsburgh, Pennsylvania
								January 5, 2022
NOTICE OF ANNUAL MEETING OF STOCKHOLDERS
Date	Time	Place
Wednesday	1:00 p.m.	Virtual meeting at
February 16, 2022	(Eastern Time)	www.virtualshareholdermeeting.com/
								AQUA2022

You can attend and participate in the 2022 Annual Meeting of Stockholders (the "Annual Meeting") online, vote your shares electronically, and submit your questions during the Annual Meeting by visiting www.virtualshareholdermeeting.com/AQUA2022. You will need the 16-digit control number included on your Notice of Internet Availability of Proxy Materials (the "Notice") or proxy card to access the Annual Meeting platform.

Meeting Agenda:

1. Election of Three Class I Director Nominees for Three-Year Terms;
2. Approval, on an Advisory Basis, of the Compensation of Our Named Executive Officers;
3. Ratification of the Appointment of Ernst & Young LLP as Our Independent Registered Public Accounting Firm for the Fiscal Year Ending September 30, 2022; and
4. Transaction of any other business as may properly come before the Annual Meeting or any adjournment or postponement thereof.

Record Date:

Stockholders of record at the close of business on December 20, 2021, are entitled to receive notice of and to vote at the Annual Meeting and any adjournment or postponement thereof.

Materials for Review:

We encourage you to review the proxy materials for our Annual Meeting, which include our Proxy Statement and 2021 Annual Report. Beginning January 5, 2022, we made the proxy materials available via the internet at www.proxyvote.com and began mailing the Notice to our stockholders. The Notice contains important information about how to access the proxy materials and vote online.

How to Vote:

At the Annual Meeting	Internet	Telephone		Mail
Follow the instructions at	Visit www.proxyvote.com	Call the number listed on your	If you received printed copies
www.virtualshareholdermeeting.				proxy card or voting instruction	of the proxy materials,
com/AQUA2022				form.	complete, sign, date, and
									return your proxy card or
									voting instruction form.

Important Information Regarding the Availability of Proxy Materials

The Notice, Proxy Statement, Proxy Card and our 2021 Annual Report, which includes our Annual Report on Form 10-K for the fiscal year ended September 30, 2021, are available at www.proxyvote.com.

Your vote is very important. Please carefully read the attached Proxy Statement. Whether or not you plan to attend the Annual Meeting, we encourage you to vote and submit your proxy in advance of the Annual Meeting, over the internet, by telephone or mail. Stockholders who attend the Annual Meeting may also vote electronically during the Annual Meeting, which will revoke any previous votes.

By Order of the Board of Directors,

Vincent Grieco

Executive Vice President,

General Counsel and Secretary