COUNTY WATER-SYSTEM LEDGER
Williamson, Texas
EPA’s September 2026 export lists 21 active community water systems serving Williamson, Texas, with 3 current-violation flags and 1 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Williamson, Texas
EPA associates 21 covered systems with Williamson, Texas; their reported population-served values total 687,373 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| City Of GeorgetownTX2460001 | 191,639 | Surface water | Current health-based flag |
| City Of Round RockTX2460003 | 130,662 | Surface water | No current violation flagged |
| City Of LeanderTX2460012 | 98,330 | Surface water | Current monitoring/reporting flag |
| City Of Cedar ParkTX2460009 | 86,939 | Surface water | No current violation flagged |
| Jonah Water SudTX2460022 | 29,861 | Surface water purchased | No current violation flagged |
| City Of HuttoTX2460007 | 29,580 | Surface water purchased | No current violation flagged |
| City Of TaylorTX2460004 | 20,622 | Surface water purchased | No current violation flagged |
| Brushy Creek MudTX2460061 | 18,314 | Surface water | No current violation flagged |
| Sonterra MudTX2460157 | 16,614 | Surface water purchased | No current violation flagged |
| Jarrell Schwertner WscTX2460011 | 9,681 | Surface water purchased | No current violation flagged |
| City Of Liberty HillTX2460013 | 8,777 | Surface water purchased | No current violation flagged |
| Williamson County Wsid 3TX2460152 | 8,265 | Ground water purchased | No current violation flagged |
| Block House MudTX2460110 | 6,618 | Surface water purchased | No current violation flagged |
| Williamson Travis County Mud 1TX2460120 | 5,793 | Surface water purchased | No current violation flagged |
| Fern Bluff MudTX2460128 | 5,682 | Surface water purchased | No current violation flagged |
| Williamson County Mud 11TX2460159 | 4,248 | Surface water purchased | No current violation flagged |
| Williamson County Mud 10TX2460145 | 3,513 | Surface water purchased | No current violation flagged |
| City Of JarrellTX2460169 | 3,450 | Surface water purchased | No current violation flagged |
| Paloma Lake Mud 1TX2460164 | 3,111 | Surface water purchased | No current violation flagged |
| City Of BartlettTX2460006 | 2,950 | Ground water | Current serious-violator flag |
| Vista Oaks MudTX2460139 | 2,724 | Surface water purchased | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Williamson, Texas
EPA classifies 21 systems serving Williamson, Texas across 4 primary-source categories; Surface water is the largest category with 5 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.