Beth, as others have posted the path of the last solar eclipse should have nothing to do with this. The M7.6 Sumatra likely triggered the M6.6 on another Sumatra fault; could be static stress changes, could be shaking. A few weeks ago there was a M6+ quake that preceded another 5 or 6000 km away by less than a minute, which is faster than the P wave would take to get there. So, either coincidence, or something unknown. The latest one is rather far for a M6.6 to trigger another by static stress; I have not calculated P and S wave times, but there could be a delay. I suppose we will see whether the seismologists look into this.

It seems likely that the water main breaks are unrelated to faulting, unless they line up on a surface fault. What other people have been posting on that seems more likely (shrinking and swelling of soils as they dry out/get wet etc). As suggested by someone else here, it might be worth someone looking at flow in the pipes also. The reporting is liable to be uneven; a few breaks may cause reporting of others that normally you would not have heard about.

Chris