I would suggest digging down a few 'miles' under the city, not just a few feet, and learn what is going on. Most, if not all, major cities now have under-ground cities-bunkers-tunnels that are DEEP underground for survival purposes.

I would anticipate that ongoing construction in solid rock would occasionally cause disturbances or vibrations radiating to the surface that would impact weakened pipes and such. This has been reported in the past.

Good idea, Larry. I remember that and we didn't hear about breaking water mains when the odd/even watering day was instituted. At least it's worth a try. The DWP doesn't seem to be doing anything except analyzing and responding to breaks thus far. Meanwhile we keep losing gallons of precious water. Come on. Let's do something.
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Jozie,

that's a very good idea, but I would like know just how many people obey the watering rule. I know a number of my neighbors don't. A better idea would be the old odd and even rule. If the last two digits of your house number is even you can water on an even day, if it's odd, you water on an odd day.

And you have two water days a week. Monday and Thursday are even, and Tuesday and Friday are odd. This should even up the pressure on the mains during the week.

In new year of 2000, I read in the Daily News about the San Fernando Valler history and how a smart engineer brought for the first time water not only for the valley but for all Los Angeles county. So I think is old enough for to start making changes and making a priority because we can afford loosing more water than we already did. I think the DPW must start fixing where the olds are, they must have all the old the maps, aren't they?

Why don't they temporarily suspend the water usage restriction and see if the pipes stop breaking?