dirty /ˈdɜrti/ /ˈdɜːti/
unclean /ənˈklin/ /ʌnˈkliːn/
septic /sˈɛptɪk/ /sˈɛptɪk/
infected /ɪnˈfɛktəd/ /ɪnˈfɛktɪd/