Marshall St. Advanced Pollution Control Facility
1605 Harbor Dr, Clearwater, FL 33755 · Pinellas County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 10 MGD
- NPDES permit
- FL0021857
- Effective
- Permit expires
- December 2027
- Population served
- 41,155
- CWNS 2022
Marshall St. Advanced Pollution Control Facility is a publicly owned wastewater treatment plant in Clearwater, Pinellas County, Florida, serving about 41,155 residents. It discharges under NPDES permit FL0021857 (effective), which expires in December 2027, with 66 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in March 1994.
Treatment technology
8 treatment structures and unit processes identified at Marshall St. Advanced Pollution Control Facility.
Available with a free Klarifi account
See the full treatment train at Marshall St. Advanced Pollution Control Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 66
- Effluent violations
- 66
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 Marshall St. Advanced Pollution Control Facility in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Penalties assessed
- $300,000
- all cases
- EPA inspections
- 0
- none on record
Latest case · Mar 1994
CLEARWATER, FL, CITY OF & STATE OF FLORIDA
Judicial case · CWA, Clean Water Act · Final Order With Penalty · Penalty $300,000 · The case also names 1 other plant, and its amounts cover all of them
Source: EPA ECHO, civil enforcement case 04-1987-0036.
Full case history with a free Klarifi account
Every action against Marshall St. Advanced Pollution Control Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Industrial users and pretreatment
Industries that discharge process wastewater to Marshall St. Advanced Pollution Control Facility, from the plant's pretreatment programme records.
- Industrial users
- 4
- on record
Among them: Bausch& Lomb Surgical (Clearwater); Brenntag Mid-South, Inc. (Clearwater); Clearwater Marine Aquarium (Clearwater). Most users are in automotive, metal and equipment manufacturing and chemicals, plastics and petroleum.
Industrial users of Marshall St. Advanced Pollution Control Facility →
Unlock all 4 industrial users of this plant
Discharge flow, federal category, source documents and contacts for every industrial user of Marshall St. Advanced Pollution Control Facility. Free with a Klarifi account.
Key contacts
24 verified contacts for Marshall St. Advanced Pollution Control Facility, with validated emails and direct phone numbers.
Unlock 24 verified contacts (21 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Marshall St. Advanced Pollution Control Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Florida
Clearwater · 2 mi away
12 MGD
Dunedin · 3 mi away
—
Dunedin · 4 mi away
0.005 MGD
Clearwater · 5 mi away
2.2 MGD
Safety Harbor · 6 mi away
2.4 MGD
Oldsmar · 9 mi away
1.51 MGD
St Petersburg · 13 mi away
20 MGD
St Petersburg · 15 mi away
16 MGD
Marshall St. Advanced Pollution Control Facility: 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 October 22, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms