Chemicals constituted 55.0%, 18.0% and 27.1% of our total revenue, respectively, compared to 53.8%, 16.0% and 30.2%, respectively, for the Prior Quarter. The revenue changes by reportable segment are as follows:
Water Services. Revenue increased $58.0 million, or 106.3%, to $112.5 million for the Current Quarter compared to $54.5 million for the Prior Quarter. The increase was primarily attributable to higher demand for our services in comparison to the Prior Quarter, which was impacted by a significant reduction in drilling and completions activity following the onset of the COVID-19 pandemic. The increase was also impacted by incremental revenue contributed by Complete.
Water Infrastructure. Revenue increased by $20.6 million, or 127.6%, to $36.8 million for the Current Quarter compared to $16.2 million for the Prior Quarter. The increase was primarily attributable to higher demand for our services in comparison to the Prior Quarter, which was impacted by a significant reduction in drilling and completions activity following the onset of the COVID-19 pandemic. The increase was also modestly impacted by incremental revenue contributed by Complete.
Oilfield Chemicals. Revenue increased $24.8 million, or 81.2%, to $55.4 million for the Current Quarter compared to $30.6 million for the Prior Quarter. The increase was primarily attributable to higher demand for our services in comparison to the Prior Quarter, which was impacted by a significant reduction in drilling and completions activity following the onset of the COVID-19 pandemic.
Costs of Revenue
Costs of revenue increased $77.5 million, or 65.6%, to $195.6 million for the Current Quarter compared to $118.1 million for the Prior Quarter. The increase was primarily composed of a $41.8 million increase in Water Services costs, a $15.7 million increase in Water Infrastructure costs, and a $21.0 million increase in Oilfield Chemicals costs due to supporting higher revenue producing activity discussed above.
Water Services. Costs of revenue increased $41.8 million, or 79.1%, to $94.7 million for the Current Quarter compared to $52.9 million for the Prior Quarter. Cost of revenue as a percent of revenue decreased from 97.0% to 84.2% due to a gradual increase in demand for our services after June 30, 2020, which spread fixed costs over a larger revenue base. The Prior Quarter was negatively impacted by a significant reduction in demand for our services following the onset of the COVID-19 pandemic.
Water Infrastructure. Costs of revenue increased $15.7 million, or 122.3%, to $28.5 million for the Current Quarter compared to $12.8 million for the Prior Quarter. Cost of revenue as a percent of revenue decreased from 79.3% to 77.5% primarily due to a higher relative contribution from high-margin pipeline revenue.
Oilfield Chemicals. Costs of revenue increased $21.0 million, or 73.6%, to $49.6 million for the Current Quarter compared to $28.6 million for the Prior Quarter. Cost of revenue as a percent of revenue decreased from 93.4% to 89.5% primarily due to a gradual increase in demand for our services after June 30, 2020, which spread fixed costs over a larger revenue base. The Prior Quarter was negatively impacted by a significant reduction in demand for our services following the onset of the COVID-19 pandemic.
Depreciation and Amortization. Depreciation and amortization expense decreased $1.0 million, or 4.1%, to $22.9 million for the Current Quarter compared to $23.9 million for the Prior Quarter, primarily due to a lower fixed asset base.
Gross Profit (Loss)
Gross profit was $9.0 million for the Current Quarter compared to a gross loss of $16.9 million for the Prior Quarter primarily due to higher revenue in all three segments resulting from increased activity levels. Gross profit increased by $16.2 million, $4.9 million and $3.8 million in our Water Services, Water Infrastructure and Oilfield Chemicals segments, respectively. Also impacting the increase in gross profit was a $1.0 million decrease in depreciation and amortization expense. Gross margin as a percent of revenue was 4.4% and (16.7%) in the Current Quarter and Prior Quarter, respectively.