Laredo City Of Sewer Plant
Marcella Avenue & Springfield Avenue, Laredo, TX 78041 · Webb County · Publicly Owned Treatment Works
- Average flow
- 10.77 MGD
- Design flow
- 14 MGD
- NPDES permit
- TX0025461
- Effective
- Permit expires
- October 2027
- Population served
- 130,000
- CWNS 2022
Laredo City Of Sewer Plant is a publicly owned wastewater treatment works in Laredo, Webb County, Texas treating an average of 10.77 million gallons per day against a permitted design capacity of 14 MGD, serving about 130,000 residents. It discharges under NPDES permit TX0025461 (effective), which expires in October 2027, with 82 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in October 2020.
Treatment technology
2 treatment structures and unit processes identified at Laredo City Of Sewer Plant.
Available with a free Klarifi account
See the full treatment train at Laredo City Of Sewer Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 82
- Effluent violations
- 79
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 Laredo City Of Sewer Plant in EPA's ICIS system.
- Formal actions
- 2
- 1 since FY2020
- Compliance actions
- $20,000
- required by EPA orders
- EPA inspections
- 1
- latest Mar 2026
Latest case · Oct 2020
Zacate Creek Wastewater Treatment Facility
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $20,000
EPA's description of the case:
“Zacate Creek Wastewater Treatment Facility order was issued for permit violations. A corrective action plan is required.”
Source: EPA ECHO, civil enforcement case 06-2020-1709.
Full case history with a free Klarifi account
Every action against Laredo City Of Sewer Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Laredo
Laredo's capital improvement plan lists 74 water, sewer and wastewater line items worth $846M starting 2025–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Laredo →
| Project | Budget | Years |
|---|---|---|
| South Laredo WWTP exp to 24 mgd | $138,000,000 | 2027–2028 |
| NLWWTP 3 MGD Expansion-District 6 | $74,750,000 | 2027–2029 |
| Zacate Creek WWTP Reconstruction | $44,300,000 | 2027–2029 |
| Expansion of North Laredo WWTP | $44,300,000 | 2027–2029 |
| Manadas Expansion to 9.5 MGD | $43,500,000 | 2027–2028 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
2 verified contacts for Laredo City Of Sewer Plant, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Laredo City Of Sewer Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Texas
Laredo · 2 mi away
0.05 MGD
Laredo · 4 mi away
10.86 MGD
Laredo · 7 mi away
2.09 MGD
Laredo · 9 mi away
0.38 MGD
Laredo · 14 mi away
0.23 MGD
Laredo · 21 mi away
0.01 MGD
Zapata · 44 mi away
0.56 MGD
Hebbronville · 53 mi away
0.68 MGD
Laredo City Of Sewer Plant: 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 March 1, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms