Hutto WWTP
1300' E Of Fm 1660 And 1500' S Sh 79, Hutto, TX 78634 · Williamson County · Publicly Owned Treatment Works
- Average flow
- 1.26 MGD
- Design flow
- 3.25 MGD
- NPDES permit
- TX0025577
- Administratively continued
- Permit expires
- January 2024
- Population served
- 21,993
- CWNS 2022
Hutto WWTP is a publicly owned wastewater treatment works in Hutto, Williamson County, Texas treating an average of 1.26 million gallons per day against a permitted design capacity of 3.25 MGD, serving about 21,993 residents. It discharges under NPDES permit TX0025577 (administratively continued), which expires in January 2024, with 20 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in August 2024.
Treatment technology
One treatment structure or unit process identified at Hutto WWTP.
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See the full treatment train at Hutto WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 20
- Effluent violations
- 20
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Hutto WWTP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $6,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Aug 2024
City of Hutto-TX0025577
Administrative order · CWA, NPDES Permit Violations · Final Order Issued · Compliance actions $6,000
EPA's description of the case:
“The Administrative Order 06-2024-1784 issued to the City of Hutto,Texas for effluent violations of the TPDES permit. The order was issued on August 20, 2024. The city is required to submit a…”
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Source: EPA ECHO, civil enforcement case 06-2024-1784.
Full case history with a free Klarifi account
Every action against Hutto WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Hutto WWTP.
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Nearby wastewater treatment plants in Texas
Hutto · 3 mi away
2.38 MGD
Round Rock · 5 mi away
28.7 MGD
Round Rock · 8 mi away
1.22 MGD
Pflugerville · 9 mi away
6 MGD
Taylor · 9 mi away
5.69 MGD
Georgetown · 10 mi away
3.14 MGD
Georgetown · 10 mi away
3.58 MGD
Austin · 11 mi away
0.45 MGD
Hutto WWTP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated May 26, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms