  A total of 81 DA white dwarfs have been observed with the Cosmic Origins
Spectrograph on the Hubble Space Telescope in a snapshot program. The targets
were selected to be in the $T_{\rm eff}$ range from 17000 - 25000 K, where
optical metal lines become weak and difficult to detect. Because of the strong
Si, C, and O resonance lines in the UV, this survey has a sensitivity that is
comparable to that of the Keck/VLT searches for CaII K in cooler white dwarfs.
These objects also have no convection zone and thus very short diffusion
timescales, assuring that accretion is currently ongoing. The spectra have high
resolution and in most cases fairly good S/N. About 60% of them show
photospheric metal pollution, predominantly of Si, but in some cases additional
metals are present. We report the results of a preliminary analysis and discuss
the sources of the accreted matter and the possible r\^ole of radiative
levitation.
