Extreme events can significantly disrupt the operation
and maintenance
(O&M) of drinking water utilities (DWUs), compromising community
access to water in critical times. However, we posit that utility
size can influence DWUs’ resilience, as large DWUs may have
a greater capacity to handle extreme and sudden changes characteristic
of emergencies. Here, we explore the resilience of small DWUs by understanding
how a global crisis (i.e., the COVID-19 pandemic) affected small DWUs
and how these impacts statistically differ from those of large DWUs
using statistical inferencing. We used two data sets that reflect
the perspectives of 28 large and 26 small DWUs from 14 states. We
found that small DWUs experienced issues involving supply chain, finances,
and personnel management that pre-existing issues may have magnified.
Additionally, small and large DWUs experienced statistically significant
differences in personnel management, revenue change, increase in delinquent
accounts, and emergency response plan activation. For example, large
DWUs experienced more revenue loss than small DWUs due to economies
of scale and larger changes from status quo operations. This study
reveals areas of concern (and opportunities) regarding the resiliency
of small DWUs in the face of emergencies that can allow policymakers
to assist small DWUs.