New York City is literally flushing millions down the toilet.

The city has spent at least $8.8 million on cheap toilet paper since June 2013 – and the costs are piling up under Mayor de Blasio.

Around $1.58 million was wasted on toilet paper last fiscal year, a 12% bump since 2014, according to records obtained by The Daily News. Last month alone, the city bought $126,000 worth of toilet paper rolls.

The city uses about four million rolls every year, buying only cheap, single-ply toilet paper, according to the Citywide Administrative Services. An average of $1.45 million was spent on potty paper annually over the last few years.