    <SEC-DOCUMENT>0000911177-18-000031-index.html : 20180515
    <SEC-HEADER>0000911177-18-000031.hdr.sgml : 20180515
    <ACCEPTANCE-DATETIME>20180515151807
    ACCESSION NUMBER:		0000911177-18-000031
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		4
    CONFORMED PERIOD OF REPORT:	20180515
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Termination of a Material Definitive Agreement
    ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
    ITEM INFORMATION:		Other Events
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20180515
    DATE AS OF CHANGE:		20180515

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CASELLA WASTE SYSTEMS INC
    		CENTRAL INDEX KEY:			0000911177
    		STANDARD INDUSTRIAL CLASSIFICATION:	REFUSE SYSTEMS [4953]
    		IRS NUMBER:				030338873
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-23211
    		FILM NUMBER:		18835797

    	BUSINESS ADDRESS:
    		STREET 1:		25 GREENS HILL ROAD
    		CITY:			RUTLAND
    		STATE:			VT
    		ZIP:			05701
    		BUSINESS PHONE:		8027750325

    	MAIL ADDRESS:
    		STREET 1:		25 GREENS HILL ROAD
    		CITY:			RUTLAND
    		STATE:			VT
    		ZIP:			05701
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>cwst-051418x8kcreditagreem.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: cwst-051418x8kcreditagreem.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>2
    <FILENAME>cwst-qxex101.htm
    <DESCRIPTION>EXHIBIT 10.1
    <TEXT>
    Document 2 - file: cwst-qxex101.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>cwst-qxex101_image1a01.jpg
    <TEXT>
    Document 3 - file: cwst-qxex101_image1a01.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g69336g35d03.jpg
    <TEXT>
    Document 4 - file: g69336g35d03.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>