of recyclable commodities expenses and increased travel, meetings, training and community activity expenses, partially offset by benefits from price-led increases in revenue.
Depreciation, depletion and amortization expense increased $6.2 million, to $37.6 million for the three months ended June 30, 2022, from $31.4 million for the three months ended June 30, 2021. Depreciation, depletion and amortization expense increased $12.7 million, to $74.2 million for the six months ended June 30, 2022, from $61.5 million for the six months ended June 30, 2021. The increase for the three and six months ended June 30, 2022 was due to assets acquired in acquisitions and additions to our fleet and equipment.
Central
Revenue increased $43.1 million to $309.9 million for the three months ended June 30, 2022, from $266.8 million for the three months ended June 30, 2021. Revenue increased $83.9 million to $586.1 million for the six months ended June 30, 2022, from $502.2 million for the six months ended June 30, 2021. The increase for the three and six months ended June 30, 2022 was due to price increases, contributions from acquisitions closed subsequent to June 30, 2021, higher roll off collection volumes and higher prices for recyclable commodities.
EBITDA increased $14.1 million to $109.0 million for the three months ended June 30, 2022, from $94.9 million for the three months ended June 30, 2021. EBITDA margin was 35.2% and 35.6% for the three months ended June 30, 2022 and 2021, respectively. EBITDA increased $27.2 million to $201.1 million for the six months ended June 30, 2022, from $173.9 million for the six months ended June 30, 2021. EBITDA margin was 34.3% and 34.6% for the six months ended June 30, 2022 and 2021, respectively. The decrease in our EBITDA margin for the three and six months ended June 30, 2022 was due to acquisitions closed subsequent to June 30, 2021 having operating margins lower than our segment average, increased diesel and natural gas fuel expenses, increased labor expenses attributable to pay rate increases, increased vehicle and equipment maintenance and repair expenses and increased travel, meetings, training and community activity expenses, partially offset by benefits from price-led increases in revenue.
Depreciation, depletion and amortization expense increased $5.0 million, to $38.0 million for the three months ended June 30, 2022, from $33.0 million for the three months ended June 30, 2021. Depreciation, depletion and amortization expense increased $8.4 million, to $73.0 million for the six months ended June 30, 2022, from $64.6 million for the six months ended June 30, 2021. The increase for the three and six months ended June 30, 2022 was 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.
Canada
Revenue increased $30.1 million to $250.4 million for the three months ended June 30, 2022, from $220.3 million for the three months ended June 30, 2021, due to price increases, contributions from acquisitions closed subsequent to June 30, 2021, higher commercial and roll off collection volumes, higher prices for renewable energy credits associated with the generation of landfill gas, higher prices for recyclable commodities and higher volumes collected from commercial recycling customers, partially offset by lower residential collection volumes due to the loss of a collection contract subsequent to June 30, 2021, lower landfill special waste volumes and the divestiture of a non-strategic operating location.
Revenue increased $55.8 million to $465.1 million for the six months ended June 30, 2022, from $409.3 million for the six months ended June 30, 2021, due to price increases, contributions from acquisitions closed subsequent to June 30, 2021, higher commercial and roll off collection volumes, higher landfill special waste volumes, higher prices for renewable energy credits associated with the generation of landfill gas, higher prices for recyclable commodities and higher volumes collected from commercial recycling customers, partially offset by lower residential collection volumes due to the loss of a collection contract subsequent to June 30, 2021 and the divestiture of a non-strategic operating location.
EBITDA increased $4.0 million to $92.6 million for the three months ended June 30, 2022, from $88.6 million for the three months ended June 30, 2021. EBITDA margin was 37.0% and 40.2% for the three months ended June 30, 2022 and 2021, respectively. EBITDA increased $14.9 million to $177.5 million for the six months ended June 30, 2022, from $162.6 million for the six months ended June 30, 2021. EBITDA margin was 38.2% and 39.7% for the six months ended