-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001140361-07-024313.txt : 20071214
<SEC-HEADER>0001140361-07-024313.hdr.sgml : 20071214
<ACCEPTANCE-DATETIME>20071214162654
ACCESSION NUMBER:		0001140361-07-024313
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20071212
FILED AS OF DATE:		20071214
DATE AS OF CHANGE:		20071214

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Cuskley Stephanie A
		CENTRAL INDEX KEY:			0001333583

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-10786
		FILM NUMBER:		071307679

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		(636) 530-8000

	MAIL ADDRESS:	
		STREET 1:		C/O INSITUFORM TECHNOLOGIES, INC.
		STREET 2:		17988 EDISON AVENUE
		CITY:			CHESTERFIELD
		STATE:			MO
		ZIP:			63005

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INSITUFORM TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0000353020
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER, SEWER, PIPELINE, COMM AND POWER LINE CONSTRUCTION [1623]
		IRS NUMBER:				133032158
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0101

	BUSINESS ADDRESS:	
		STREET 1:		17988 EDISON AVENUE
		CITY:			CHESTERFIELD
		STATE:			MO
		ZIP:			63005
		BUSINESS PHONE:		6365308000

	MAIL ADDRESS:	
		STREET 1:		17988 EDISON AVENUE
		CITY:			CHESTERFIELD
		STATE:			MO
		ZIP:			63005

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INSITUFORM OF NORTH AMERICA INC/TN/
		DATE OF NAME CHANGE:	19930617

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INSITUFORM OF NORTH AMERICA INC
		DATE OF NAME CHANGE:	19921217
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

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    <periodOfReport>2007-12-12</periodOfReport>

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        <issuerName>INSITUFORM TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>INSU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001333583</rptOwnerCik>
            <rptOwnerName>Cuskley Stephanie A</rptOwnerName>
        </reportingOwnerId>
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            <rptOwnerStreet1>C/O INSITUFORM TECHNOLOGIES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>17988 EDISON AVENUE</rptOwnerStreet2>
            <rptOwnerCity>CHESTERFIELD</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>63005-3700</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
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            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
                <value>2007-12-12</value>
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            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
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                <transactionPricePerShare>
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            <transactionTimeliness>
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                <transactionShares>
                    <value>1556</value>
                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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        <nonDerivativeTransaction>
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                <transactionPricePerShare>
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                    <value>12.9695</value>
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    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Elizabeth A. Kovaly, as attorney-in-fact for Stephanie A. Cuskley</signatureName>
        <signatureDate>2007-12-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----