During the first quarter of 2023, we entered into an agreement with an unaffiliated water disposal company to dispose of a minimum volume of produced water over a term of seven years, for a total financial commitment of approximately $28.0 million, undiscounted. We began delivering produced water under this agreement in June 2023. As of September 30, 2023, we had short-term purchase obligations for products and services of approximately $31.5 million due in the next twelve months. See Item 1. Financial Statements ─ Note 10. Commitments and Contingencies.
Dividends and Distributions
On March 3, 2023, May 8, 2023 and August 2, 2023, we announced that our Board of Directors had declared quarterly dividends of $0.09 per share for the first, second and third quarters of 2023, respectively, on our Class A common stock. In conjunction with the dividend payments, a distribution of $0.09 per unit was paid to unit holders of Solaris LLC for each of the first, second and third quarters of 2023, subject to the same payment and record dates.
On October 31, 2023, our Board of Directors declared a quarterly dividend of $0.09 per share for the fourth quarter of 2023 on our Class A common stock. The dividend will be paid on December 21, 2023, to holders of record of our Class A common stock as of the close of business on December 7, 2023. In conjunction with the dividend payment, a distribution of $0.09 per unit will be paid to unit holders of Solaris LLC, subject to the same payment and record dates.
Cash Flows from Operating Activities
For the nine months ended September 30, 2023, net cash provided by operating activities totaled $152.5 million as compared with $77.2 million for the nine months ended September 30, 2022. The net increase is primarily due to the $49.9 million increase in total revenues offset by increases in direct operating costs and general and administrative expenses. Net cash provided by operating activities also included a net increase (decrease) of $51.4 million and ($13.6) million for the nine months ended September 30, 2023 and 2022, respectively, associated with changes in working capital items. Changes in working capital items adjust for the timing of receipts and payment of actual cash. The increase in cash provided from changes in working capital in 2023 was primarily due to lower receivable balances associated with improved collections timing.
Cash Flows from Investing Activities
For the nine months ended September 30, 2023, net cash used in investing activities totaled $111.8 million as compared with $92.9 million for the nine months ended September 30, 2022. Expenditures for property, plant and equipment were $131.9 million for the nine months ended September 30, 2023, as compared with $97.0 million for the nine months ended September 30, 2022 primarily due to increased capital activity to support our growing operations, including our long-term full-cycle water management agreement we entered into in May 2022 with Chevron U.S.A. Net cash provided by investing activities for the nine months ended September 30, 2023 included $20.1 million in cash proceeds related to an asset sale, as compared with $7.4 million in cash proceeds from the sale of property, plant and equipment during the nine months ended September 30, 2022. The nine months ended September 30, 2022 also included $3.4 million cash paid for the assets acquired from ConocoPhillips.
Cash Flows from Financing Activities
For the nine months ended September 30, 2023, net cash used in financing activities consisted of $1.0 million net Credit Facility repayments, $16.1 million dividends and distributions paid and $0.6 million treasury stock repurchases related to tax withholding on stock awards that vested. For the nine months ended September 30, 2022, net cash used in financing activities totaled $19.2 million which consisted of dividends and distributions paid.