MacOS – is the .bash_profile showing duplicated entries

So I've been trying to do a cleanup of sorts on my mac OS .bash_profile (had a few issues with it), and now when I do echo $PATH on my Terminal I get the following:

/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home
:/usr/local/sbin
:/usr/local/sbin
:/usr/local/sbin
:/usr/local/bin
:/usr/bin
:/bin
:/usr/sbin
:/sbin
:/Users/herrmartell/bin
:/usr/local/bin/mysql/bin
:/Users/herrmartell/bin
:/usr/local/bin/mysql/bin
:/Users/herrmartell/bin
:/usr/local/bin/mysql/bin

As you can see that's quite the number of duplicated entries. Which is odd, because this is what my .bash_profile looks like:

export PATH=$PATH:$HOME/bin
export PATH="/usr/local/sbin:$PATH"
export MYSQL_PATH="/usr/local/bin/mysql"
export PATH=$PATH:$MYSQL_PATH/bin
export JAVA_HOME="/path/is/too/long/sorry"
export PATH=${JAVA_HOME}:$PATH

I've tried looking for another .bash_profile/.bash*/.profile file which might be overriding mine, but found none, also the changes I make on this one file are reflected on my echo $PATH results.

Found something related, but it's on Ubuntu and to be honest I got lost: Why do I get duplicated entries in my $PATH?, and then something on Unix (lost me too, sorry): Duplicate entries in $PATH a problem?

So far, it's not giving me problems, but I'd like to avoid actually getting them in the future.

What is wrong on my file then? Thanks.