Don't try to pay your Lake Worth utility bill on line today - the system is down or maybe not?

It turns out that after I hit submit once my credit card information was in, I got the above message. Then I tried it again and got the same message. So, I went down to Utilities Customer Service to pay in person and was told that the on-line payment had registered twice. They backed one of the payments out.

Beware of this problem - wasn't the system down over the weekend for maintenance? Did they forget to turn off the message alerting people to that fact? Does anything surprise us anymore?