<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
MSDW QUALITY MUNICIPAL INVESTMENT TRUST
</LEGEND>
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> OCT-31-2000
<PERIOD-END> OCT-31-2000
<INVESTMENTS-AT-COST> 337,852,627
<INVESTMENTS-AT-VALUE> 346,490,218
<RECEIVABLES> 6,103,706
<ASSETS-OTHER> 103,648
<OTHER-ITEMS-ASSETS> 10,527,600
<TOTAL-ASSETS> 363,225,172
<PAYABLE-FOR-SECURITIES> (10,432,753)
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (403,647)
<TOTAL-LIABILITIES> (10,836,400)
<SENIOR-EQUITY> 105,000,000
<PAID-IN-CAPITAL-COMMON> 235,995,494
<SHARES-COMMON-STOCK> 16,899,913
<SHARES-COMMON-PRIOR> 17,676,713
<ACCUMULATED-NII-CURRENT> 2,517,805
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 237,882
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 8,637,591
<NET-ASSETS> 352,388,772
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 22,032,345
<OTHER-INCOME> 0
<EXPENSES-NET> (1,823,568)
<NET-INVESTMENT-INCOME> 20,208,777
<REALIZED-GAINS-CURRENT> 730,570
<APPREC-INCREASE-CURRENT> 3,145,492
<NET-CHANGE-FROM-OPS> 24,084,839
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (20,218,784)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> (776,800)
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> (6,244,630)
<ACCUMULATED-NII-PRIOR> 2,527,812
<ACCUMULATED-GAINS-PRIOR> (492,688)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (1,234,426)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (1,841,967)
<AVERAGE-NET-ASSETS> 245,765,623
<PER-SHARE-NAV-BEGIN> 14.35
<PER-SHARE-NII> 1.18
<PER-SHARE-GAIN-APPREC> 0.29
<PER-SHARE-DIVIDEND> (1.18)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.64
<EXPENSE-RATIO> 0.75
</TABLE>
