Recently the USGS released the last part of the SRTM i second data set. I updated the elevation data search tool to include that – you can now find all 1 arc second tiles available there, just check Global SRTM 1″ in global sources, mark your area of interest and hit search – you will get a link list with all files you can download via USGS Earthexplorer after logging in there.

If you need custom processings of this data like for example with waterbody flattening or seamless merging with other data sources – i provide such services, just drop me a note.