Page 21 - BENTLEY SYSTEMS PR REPORT - APRIL 2025

surveys on the system. “It allowed us to create smaller boil water advisory areas and bring the
number of affected customers down from 20,000 to only 2,076,” Loughnane said.

Utilising the hydraulic model, AQUA was also able to determine how long it would take to get the
tanks back to their normal operating levels. They used that information to communicate a timeline
to regulators and the public, positively impacting those relationships and advancing the recovery
schedule.

“We estimate the model approach accelerated the recovery schedule by a few days and reduced
downtime, consequently,” Loughnane said.
The project has become an example of what emergency response can look like for AQUA’s other
1,700 systems, mitigating the costs of traditional response efforts. Moreover, hydraulic modeling
can be used to detect asset conditions and ensure the network can handle an asset failure. While
AQUA has always reaped benefits through hydraulic modeling, these typically have been related to
capital planning, growth, and building business.
This project proved that hydraulic modeling provides vital operational and asset insights to
specifically address emergencies and asset health. “One of the biggest takeaways from this project
is the consideration of resiliency in the system,” Loughnane said.

https://www.utilities-me.com/utilities/case-study-aqua-relies-on-hydraulic-modeling-to-assist-
during-illinois-emergency-outage