Typically you should get this:
[root@esmith ~]# egrep 'www|apache' /etc/passwd
apache:x:102:102:Apache:/var/www:/sbin/nologin
www:x:102:102:SME Server web server:/home/e-smith:/bin/false
Or
[root@esmith ~]# grep www /etc/group
www:x:102:admin,apache
webstuff:x:5101:admin,user1,user2,www