increase in auto and workers’ compensation claim costs driven by higher average claim expense, a decrease in the value of recyclable commodities as compared to the prior year periods and an increase in allocated corporate overhead.
Depreciation, depletion and amortization expense increased $3.1 million, to $43.2 million for the three months ended September 30, 2023, from $40.1 million for the three months ended September 30, 2022. Depreciation, depletion and amortization expense increased $11.9 million, to $127.3 million for the nine months ended September 30, 2023, from $115.4 million for the nine months ended September 30, 2022. The increases for the three and nine months ended September 30, 2023 were due to assets acquired in acquisitions, additions to our fleet and equipment and higher depletion expense due to higher landfill development costs increasing our per ton landfill depletion rates and increased volumes.
Eastern
Revenue increased $23.8 million to $353.1 million for the three months ended September 30, 2023, from $329.3 million for the three months ended September 30, 2022. Revenue increased $115.8 million to $1.026 billion for the nine months ended September 30, 2023, from $909.9 million for the nine months ended September 30, 2022. The increases for the three and nine months ended September 30, 2023 were due to price increases and contributions from acquisitions, partially offset by decreased post-collection volumes, decreased residential and commercial service revenues, lower roll off volumes and a decrease in the value of recyclable commodities compared to the prior year periods.
EBITDA increased $23.4 million to $100.8 million, or a 28.5% EBITDA margin for the three months ended September 30, 2023, from $77.4 million, or a 23.5% EBITDA margin for the three months ended September 30, 2022. EBITDA increased $46.3 million to $260.6 million, or a 25.4% EBITDA margin for the nine months ended September 30, 2023, from $214.3 million, or a 23.6% EBITDA margin for the nine months ended September 30, 2022. The increases in our EBITDA margin for the three and nine months ended September 30, 2023 were due primarily to price-led increases in revenue, a decrease in trucking costs, lower disposal expense, decreases in leachate costs, lower benefits costs and a decrease in professional fees related to lower legal spend, partially offset by higher labor costs primarily driven by wage increases, the impact of acquisitions having lower EBITDA margins than our segment average, an increase in the average auto and workers’ compensation claim cost and lower recycle commodity revenues, net of lower rebates, driven by lower average commodity pricing.
Depreciation, depletion and amortization expense increased $3.8 million, to $53.1 million for the three months ended September 30, 2023, from $49.3 million for the three months ended September 30, 2022. Depreciation, depletion and amortization expense increased $13.7 million, to $153.4 million for the nine months ended September 30, 2023, from $139.7 million for the nine months ended September 30, 2022. The increases for the three and nine months ended September 30, 2023 were due to assets acquired in acquisitions, additions to our fleet and equipment and higher depletion expense due to higher landfill development costs increasing our per ton landfill depletion rates, net of lower landfill volumes, partially offset by a reduction in amortization expense associated with the loss of certain residential service contracts.
Canada
Revenue increased $20.8 million to $263.1 million for the three months ended September 30, 2023, from $242.3 million for the three months ended September 30, 2022. Revenue increased $31.6 million to $739.0 million for the nine months ended September 30, 2023, from $707.4 million for the nine months ended September 30, 2022. The increases for the three and nine months ended September 30, 2023 were due to price increases, contributions from acquisitions, and an increase in landfill volumes, partially offset by a decrease in the average foreign currency exchange rate in effect during the comparable reporting periods, a decrease in residential collection volumes, and lower prices for recyclable commodities as compared to the prior year period. For the three months ended September 30, 2023, revenue benefited from higher prices for renewable energy credits associated with the generation of landfill gas. For the nine months ended September 30, 2023, renewable energy credits associated with the generation of landfill gas decreased as compared to the prior year period.
EBITDA increased $20.6 million to $108.5 million, or a 41.2% EBITDA margin for the three months ended September 30, 2023, from $87.9 million, or a 36.3% EBITDA margin for the three months ended September 30, 2022.