-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 V0ER998clB0Uc5P0W7WuC8ILNdNgnJcGK08LGMOdPnYfW68aG3zc2tqRQiuCDCTm
 yz8XtAXyDKPUFQnTKAjC2w==

<SEC-DOCUMENT>0000935836-04-000228.txt : 20040929
<SEC-HEADER>0000935836-04-000228.hdr.sgml : 20040929
<ACCEPTANCE-DATETIME>20040929183656
ACCESSION NUMBER:		0000935836-04-000228
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040928
FILED AS OF DATE:		20040929
DATE AS OF CHANGE:		20040929

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WASTE CONNECTIONS INC/DE
		CENTRAL INDEX KEY:			0001057058
		STANDARD INDUSTRIAL CLASSIFICATION:	REFUSE SYSTEMS [4953]
		IRS NUMBER:				943283464
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		35 IRON POINT CIRCLE
		STREET 2:		SUITE 200
		CITY:			FOLSOM
		STATE:			CA
		ZIP:			95630
		BUSINESS PHONE:		9166088200

	MAIL ADDRESS:	
		STREET 1:		35 IRON POINT CIRCLE
		STREET 2:		SUITE 200
		CITY:			FOLSOM
		STATE:			CA
		ZIP:			95630-3155

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DUPREAU EUGENE V
		CENTRAL INDEX KEY:			0001064310

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31507
		FILM NUMBER:		041053764

	BUSINESS ADDRESS:	
		STREET 1:		C/O WASTE CONNECTIONS INC
		STREET 2:		2260 DOUGLAS BLVD SUITE 280
		CITY:			ROSEVILLE
		STATE:			CA
		ZIP:			95661
		BUSINESS PHONE:		9167722221

	MAIL ADDRESS:	
		STREET 1:		C/O WASTE CONNECTIONS INC
		STREET 2:		2260 DOUGLAS BLVD SUITE 280
		CITY:			ROSEVILLE
		STATE:			CA
		ZIP:			95661
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-09-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001057058</issuerCik>
        <issuerName>WASTE CONNECTIONS INC/DE</issuerName>
        <issuerTradingSymbol>WCN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001064310</rptOwnerCik>
            <rptOwnerName>DUPREAU EUGENE V</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WASTE CONNECTIONS INC</rptOwnerStreet1>
            <rptOwnerStreet2>35 IRON POINT CIRCLE, SUITE 200</rptOwnerStreet2>
            <rptOwnerCity>FOLSOM</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95630</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Regional VP-Western Region</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-09-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>100000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.67</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>140342</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Common Stock Warrants (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.67</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-09-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>100000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>1998-02-23</value>
            </exerciseDate>
            <expirationDate>
                <value>2008-02-22</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>100000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The zero in item 8 is a placeholder only that is required by the EDGAR software and should be disregarded.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Eugene V. Dupreau</signatureName>
        <signatureDate>2004-09-29</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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