Sources and methods

• District list and 2025 rates: Texas Comptroller 2025 Special District Rates and Levies (2023 and 2024 files for history).
• 2025 and 2026 rates cross-checked against the Collin County Tax Office rate history and Denton County Tax Office Truth-in-Taxation list.
• Type, status, creation date and ZIP overlap: TCEQ Water Districts map service.
• PID installments: MuniCap 2026-27 information packets and P3Works Service and Assessment Plans; Collin County Tax Office 2026 rate summary for which PIDs it collects.
• PIDs: each city's PID page or Service and Assessment Plan, linked on each PID page.

Anything not confirmed from an official source is shown as “Not yet verified”. Last verified Oct 31, 2026.