The District is in the process of improving out filtering process.  This will be going on for the next couple of weeks or so.  You may experience a greenish tint or light orange or brown.  It is iron and manganeese in the water that is currently not being filtered out.  Both are nusinances but not health issues.  The process of cleaning out filters will also require more periods of back washing, which cause a drop in pressure out in the system.  If you are using water and experience a pressure loss, turn off the water for about 10 minutes and pressure will probably come back up.  This too will stop on the frequent basis once this project is complete.  We have several projects associated with the improvement of the water going on for the next month or so.