Exhibit 99.3

ADVANCED DRAINAGE SYSTEMS ANNOUNCES SPECIAL CASH DIVIDEND OF $1.00 PER SHARE AND QUARTERLY CASH DIVIDEND INCREASE

HILLIARD, Ohio – (May 23, 2019) – Advanced Drainage Systems, Inc. (NYSE: WMS) (“ADS” or the “Company”), a leading global manufacturer of water management products and solutions for commercial, residential, infrastructure and agricultural applications, today announced its Board of Directors has approved a special cash dividend of $1.00 per share as well as a quarterly cash dividend on ADS common stock of $0.09 per share.

Scott Barbour, President and Chief Executive Officer, commented, “Today’s special dividend declaration is the latest step in our commitment to return capital to shareholders. Given our strong balance sheet and favorable financial position, we are able to do this while preserving the financial and operational flexibility to pursue acquisitions and other capital investments as part of our three-year growth plan."

The special dividend of $1.00 per share will be paid on June 14, 2019 to shareholders of record at the close of business on June 3, 2019. The aggregate payment will be approximately $75 million, funded through existing cash and additional borrowings. In accordance with the terms of the ESOP, the special dividend on loan encumbered ESOP preferred shares will be used by the ESOP to repay a portion of the outstanding ESOP loan balance owed to the Company. Approximately 11.6 million ESOP preferred shares will be released from the ESOP loan encumbrance and allocated to ESOP participants’ plan accounts on June 30, 2019, triggering a one-time non-cash, non-tax-deductible ESOP compensation charge that the Company expects to realize in the first quarter of fiscal year 2020.

The increased quarterly cash dividend of $0.09 per share will also be paid on June 14, 2019 to shareholders of record at the close of business on June 3, 2019.

About the Company

Advanced Drainage Systems is the leading manufacturer of high performance thermoplastic corrugated pipe, providing a comprehensive suite of water management products and superior drainage solutions for use in the construction and infrastructure marketplace. Its innovative products are used across a broad range of end markets and applications, including non-residential, residential, agriculture and infrastructure applications. The Company has established a leading position in many of these end markets by leveraging its national sales and distribution platform, overall product breadth and scale and manufacturing excellence. Founded in 1966, the Company operates a global network of approximately 55 manufacturing plants and over 30 distribution centers. To learn more about ADS, please visit the Company’s website at www.ads-pipe.com.

Forward Looking Statements

Certain statements in this press release may be deemed to be forward-looking statements. These statements are not historical facts but rather are based on the Company’s current expectations, estimates and projections regarding the Company’s business, operations and other factors relating thereto. Words such as “may,” “will,” “could,” “would,” “should,” “anticipate,” “predict,” “potential,” “continue,” “expects,” “intends,” “plans,” “projects,” “believes,” “estimates,” “confident” and similar expressions are used to identify these forward-looking statements. Factors that could cause actual results to differ from those reflected in forward-looking statements relating to our operations and business include: fluctuations in the price and availability of resins and other raw materials and our ability to pass any increased costs of raw materials on to our customers in a timely manner; volatility in general business and economic conditions in the markets in which we operate, including, without limitation, factors relating to availability of credit, interest rates, fluctuations in capital and business and consumer confidence; cyclicality and seasonality of the non-residential and residential construction markets and infrastructure spending; the risks of increasing competition in our existing and future markets, including competition from both manufacturers of high performance thermoplastic corrugated pipe and manufacturers of products using alternative materials; our ability to continue to convert current demand for concrete, steel and PVC pipe products into demand for our high performance thermoplastic corrugated pipe and Allied Products; the effect of weather or seasonality; the loss of any of our significant customers; the risks of doing business internationally; the risks of conducting a portion of our operations through joint ventures; our ability to expand into new geographic or product markets; our ability to achieve the acquisition component of our growth strategy; the risk associated with manufacturing processes; our ability to manage our assets; the risks associated with our product warranties; our ability to manage our supply purchasing and customer credit policies; the risks associated with our self-insured programs; our ability to control labor costs and to attract, train and retain highly-qualified employees and key personnel; our ability to protect our intellectual property rights; changes in laws and regulations, including environmental laws and regulations; our ability to project product mix; the risks associated with our current levels of indebtedness; fluctuations in our effective tax rate, including from the recently enacted Tax Cuts and Jobs Act; changes to our operating results, cash flows and financial condition attributable to the recently enacted Tax Cuts and Jobs Act; our ability to meet future capital requirements and fund our liquidity needs; the risk that additional information may arise that would require the Company to make additional adjustments or revisions or to restate the financial statements and other financial data for certain prior periods and any future periods, any delay in the filing of any filings with the Securities and Exchange Commission (“SEC”); the review of potential weaknesses or deficiencies in the Company’s disclosure controls and procedures, and discovering weaknesses of which we are not currently aware or which have not been detected and the other risks and uncertainties described in the Company’s filings with the SEC. New risks and uncertainties emerge from time to time and it is not possible for the Company to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this press release. In light of the significant uncertainties inherent in the forward-looking information included herein, the inclusion of such information should not be regarded as a representation by the Company or any other person that the Company’s expectations, objectives or plans will be achieved in the timeframe anticipated or at all. Investors are

cautioned not to place undue reliance on the Company’s forward-looking statements and 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.

Investor / Media Contact

Advanced Drainage Systems

Michael Higgins, 614-658-0050

Mike.Higgins@ads-pipe.com