Compared to previous major typhoons, the island's water system held up pretty post-Mawar. The Guam Waterworks Authority presented a storm recovery report to the Consolidated Commission on Utilities today.

94 wells were operational before the storm hit. After Day 1, GWA says it had 60 wells back online. And by Day 19 all 94 were returned to service.

Meanwhile, as the wells were filling up, the pressure needed for distribution was rising, too. GWA general manager Miguel Bordallo said, "On Day 17, June 10, we had added almost an additional 3,000 customers to being with service and our number was 77%, 23% with no service.  By Day 21, three weeks after the storm, we were at 92% of our customers with service. Just some tough pockets up north in the Santa Rosa area in Yigo, Mangilao, and portions of Barrigada still being problematic for us."

He says by Day 29, June 22, all customers were restored to service. But getting the water running again wasn't the only thing GWA had to watch out for. It also had to ensure it was safe to drink, and a precautionary boil water notice was issued immediately after Mawar.

"Because of the drop in reservoir levels and the anticipated duration of the outage, we issued this out of an abundance of caution, under those conditions when there's reduced pressure there's an increased risk of contaminants entering the system but our testing ultimately determined that did not occur and all the samples that we took during the recovery process all came  back clean," Bordallo explained.

By Day 20, GWA felt confident enough to lift the boil water notice to most locations. Bordallo also credits the public for helping the system build back up by conserving water, saying, "As I mentioned, the conservation effort was critical to us trying to increase the areas that we could provide service. The governor's emergency declaration kind of helped with that. It created a little bit of a headache for us in terms of enforcement because we would get people calling us, saying, 'My neighbor is waterblasting his roof and you know he's not supposed to be doing that!' So when we got called we would have to send out our inspectors for compliance and safety."

And the inspectors would do a spot-check and yes, a number of notices to comply were issued to overeager residents wanting to clean up. And finally, comparing system resiliency to past typhoons, the day after Omar hit in 1992 there were zero water wells operable. The day after Pongsona in 2002, 34 wells were online.

And the day after Mawar, there were 60 wells in operation.