Fairfield City Of STP
2275 Marigold Blvd, Fairfield, IA 52556 · Jefferson County · Publicly Owned Treatment Works
- Average flow
- 0.93 MGD
- Design flow
- 16.1 MGD
- NPDES permit
- IA0035076
- Administratively continued
- Permit expires
- May 2026
- Population served
- 10,210
- CWNS 2022
Fairfield City Of STP is a publicly owned wastewater treatment works in Fairfield, Jefferson County, Iowa treating an average of 0.93 million gallons per day against a permitted design capacity of 16.1 MGD, serving about 10,210 residents. It discharges under NPDES permit IA0035076 (administratively continued), which expires in May 2026, with 31 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in August 2017.
Treatment technology
3 treatment structures and unit processes identified at Fairfield City Of STP.
Available with a free Klarifi account
See the full treatment train at Fairfield City Of STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 31
- Effluent violations
- 27
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 Fairfield City Of STP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $40M
- required by EPA orders
- EPA inspections
- 1
- latest Oct 2002
Latest case · Aug 2017
CITY OF FAIRFIELD, IOWA
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $40M
Source: EPA ECHO, civil enforcement case 07-2017-0139.
Full case history with a free Klarifi account
Every action against Fairfield City Of STP 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 Fairfield City Of STP, from the plant's pretreatment programme records.
- Industrial users
- 1
- on record
On record: Paint- Line INC (Fairfield). Most users are in automotive, metal and equipment manufacturing.
Unlock the details behind these industrial users
Discharge flow, federal category, source documents and contacts for every industrial user of Fairfield City Of STP. Free with a Klarifi account.
Capital improvement projects in Fairfield
Fairfield's capital improvement plan lists 22 water, sewer and wastewater line items worth $17M starting 2025–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Fairfield →
| Project | Budget | Years |
|---|---|---|
| STEP 4b | $6,400,000 | 2025–2027 |
| EDR Replacement | $4,000,000 | 2025–2026 |
| EDR Loan Payment | $1,300,000 | 2025–2030 |
| Collection system repairs/lining/rehabilitation | $1,260,000 | 2025–2030 |
| STEP 4a | $700,000 | 2025–2026 |
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
3 verified contacts for Fairfield City Of STP, with validated emails and direct phone numbers.
Unlock 3 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Fairfield City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Fairfield · 5 mi away
0.01 MGD
Libertyville · 5 mi away
—
Birmingham · 7 mi away
0.21 MGD
Stockport · 10 mi away
—
Lockridge · 11 mi away
—
Batavia · 11 mi away
—
Packwood · 13 mi away
—
Brighton · 13 mi away
—
Fairfield City Of STP: 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 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms