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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000276720-10-000007.txt : 20100930
<SEC-HEADER>0000276720-10-000007.hdr.sgml : 20100930
<ACCEPTANCE-DATETIME>20100930153013
ACCESSION NUMBER:		0000276720-10-000007
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100928
FILED AS OF DATE:		20100930
DATE AS OF CHANGE:		20100930

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Epker Arthur G III
		CENTRAL INDEX KEY:			0001409045

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-08814
		FILM NUMBER:		101099157

	MAIL ADDRESS:	
		STREET 1:		C/O PURE CYCLE CORPORATION
		STREET 2:		8451 DELAWARE ST.
		CITY:			THORNTON
		STATE:			CO
		ZIP:			80260

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>2010-09-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001409045</rptOwnerCik>
            <rptOwnerName>Epker Arthur G III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PURE CYCLE CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>500 E. 8TH AVE, SUITE 201</rptOwnerStreet2>
            <rptOwnerCity>DENVER</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80203</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>930633</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4000871</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>footnote 1</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Convertible Negotiable Promissory Note (common stock)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.7</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-09-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionTotalValue>
                    <value>5200000</value>
                </transactionTotalValue>
                <transactionPricePerShare>
                    <value>2.7</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2012-01-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1925925</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1925925</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Footnote 1</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">All the shares noted in this Form 4 are held directly by PAR Investment Partners L.P. (&quot;PIP&quot;).  PAR Capital Management, Inc. (&quot;PCM&quot;), as the general partner of PAR Group, L.P., which is the general partner of PIP, has investment discretion and voting control over shares held by PIP.  No shareholder, director, officer or employee of PCM has beneficial ownership (within the meaning of Rule 13d-3 promulgated under the Exchange Act) of any shares held by PIP.  The shares held by PIP are part of a portfolio managed by Mr. Epker.  As an employee of PCM, Mr. Epker has the authority to trade the securities held by PIP.</footnote>
        <footnote id="F2">The Issuer issued PIP a $5.2 million Convertible Negotiable Promissory Note (the &quot;Note&quot;) on September 28, 2010.  The terms of the Note are described in a Form 8-K filed with the Commission on September 29, 2010.  Upon approval by the Issuer's shareholders, which the Issuer plans to seek at its January 2011 annual meeting of shareholders, the Note, plus interest, will convert to unregistered common stock of the Issuer at a conversion price of $2.70 per share.  The 1,925,925 noted in this Form 4 does not include the conversion of the interest which will be determined at the date of conversion, if so approved by the Issuer's shareholders.  If the Issuer's shareholders do not approve the conversion to common stock, the Note will mature on January 15, 2012.</footnote>
    </footnotes>

    <remarks>Pursuant to a Power of Attorney filed as Exhibit 24 to a Form 4 filed with the Commission on August 8, 2007.</remarks>

    <ownerSignature>
        <signatureName>/s/ Arthur G. Epker, III, by Mark W. Harding as Attorney in Fact (see Remarks)</signatureName>
        <signatureDate>2010-09-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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