Waste Connections 10-Q 2015 Q2 Quarterly report

Exhibit 32.1

CERTIFICATE OF CHIEF EXECUTIVE OFFICER

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

The undersigned, Ronald J. Mittelstaedt, being the duly elected and acting Chief Executive Officer of Waste Connections, Inc., a Delaware corporation (the “Company”), hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge, the quarterly report of the Company on Form 10-Q for the three months ended June 30, 2015 (the “Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: July 28, 2015	By:	/s/ Ronald J. Mittelstaedt
		Ronald J. Mittelstaedt
		Chief Executive Officer

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. Section 1350, and is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and is not to be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.