-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 CaEWgUvgAvbmdvAF5Pw9iym68OyqaLOJRgAOXvFKicqosbb1I7A9iWjq5md6meQq
 K1lbPrr88ZX9YMazGXQrwQ==

<SEC-DOCUMENT>0000276720-10-000008.txt : 20101006
<SEC-HEADER>0000276720-10-000008.hdr.sgml : 20101006
<ACCEPTANCE-DATETIME>20101006172637
ACCESSION NUMBER:		0000276720-10-000008
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100930
FILED AS OF DATE:		20101006
DATE AS OF CHANGE:		20101006

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			AUGUR HARRISON E
		CENTRAL INDEX KEY:			0001269338

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-08814
		FILM NUMBER:		101112422

	MAIL ADDRESS:	
		STREET 1:		PO BOX 4389
		CITY:			ASPEN
		STATE:			CO
		ZIP:			81611

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PURE CYCLE CORP
		CENTRAL INDEX KEY:			0000276720
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER SUPPLY [4941]
		IRS NUMBER:				840705083
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			0831

	BUSINESS ADDRESS:	
		STREET 1:		500 E 8TH AVE
		CITY:			DENVER
		STATE:			CO
		ZIP:			80203
		BUSINESS PHONE:		3032923456

	MAIL ADDRESS:	
		STREET 1:		500 E 8TH AVE
		CITY:			DENVER
		STATE:			CO
		ZIP:			80203
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-09-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000276720</issuerCik>
        <issuerName>PURE CYCLE CORP</issuerName>
        <issuerTradingSymbol>pcyo</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001269338</rptOwnerCik>
            <rptOwnerName>AUGUR HARRISON E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PO BOX 4389</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>ASPEN</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>81611</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-09-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>13333</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>102384</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This includes 10,000 shares of common stock held by Patience Partners, L.P., a limited partnership in which a foundation controlled by Mr. Augur is a 60% limited partner and Patience Partners, LLC is a 40% general partner.  Patience Partners, LLC is a limited liability company in which Mr. Augur owns a 50% membership interest.</footnote>
    </footnotes>

    <remarks>Pursuant to a Power of Attorney filed as Exhibit 24 to a Form 4 filed with the Commission on December 14, 2005.</remarks>

    <ownerSignature>
        <signatureName>Harrison H. Augur by Mark W. Harding as Attorney in fact (see Remarks)</signatureName>
        <signatureDate>2010-10-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----