O’Connor Tract Water Cooperative serves portions of East Palo Alto and Menlo Park, with approximately 345 hookups (compared to PAPMWC’s approximately 600 hookups). They recently completed a Manganese treatment project that brought their water into compliance with the State Water Resource Board’s secondary water standards, unlike the water in the PAPMWC district, which does NOT meet the standard. (All amounts are from public 990 tax filings.)
| Personnel Expenses (including contractors) | PAPMWC | O’Connor Tract Water Cooperative | Difference ($) | % Higher |
| 2022 | $515,688 | $130,251 | $385,437 | 396% |
| 2021 | $546,499 | $102,783 | $443,716 | 532% |
| 2020 | $512,402 | $101,936 | $410,466 | 503% |
| 2019 | $488,283 | $ 92,518 | $395,765 | 528% |
| 2018 | $428,830 | $ 77,762 | $351,068 | 551% |