The Commonwealth Utilities Corporation says the cash-strapped utilities firm has about 19.4 million US dollars in outstanding receivables from its active customers.
It says the amount will negatively impact the utilities' operation if it remains uncollected.
As of November 2012, the Commonwealth Healthcare Corporation has the highest debt of 5.3 million dollars.
Coming in second is the Public School System, whose unpaid obligation total 3.5 million as of November 2012.
The central government incurred the next biggest debt of 2 million US dollars.
The government's receivables is expected to rise to 3.7 million US dollars once data from the December 2012 consumption is finalized.
The central government will incur a billing of approximately 1.7 million for December alone.
CUC records show the agency, which is in state of emergency, also has 3.6 million in receivables from residential customers while commercial customers owe 3.3 million.