Thanks to Troy for the tip. If you are having any water trouble in Gatewood, could be related to a problem in the vicinity of 39th SW/SW Rose, where that crew has been working. Nothing is showing on the Seattle Public Utilities water-outage map, so we have an inquiry out and will update with whatever we hear back.
ADDED WEDNESDAY NIGHT: We have yet to get a response from SPU. But as noted in comments, Arbor Heights had an outage today too, near 37th and 106th. That one did turn up on the map.