Creston City Of STP
Creston, IA 50801 · Union County · Publicly Owned Treatment Works
- Average flow
- 1.25 MGD
- Design flow
- 7.5 MGD
- NPDES permit
- IA0035238
- Administratively continued
- Permit expires
- December 2025
- Population served
- 8,188
- CWNS 2022
Creston City Of STP is a publicly owned wastewater treatment works in Creston, Union County, Iowa treating an average of 1.25 million gallons per day against a permitted design capacity of 7.5 MGD, serving about 8,188 residents. It discharges under NPDES permit IA0035238 (administratively continued), which expires in December 2025, with 3 recorded violations in the last three years.
Treatment technology
4 treatment structures and unit processes identified at Creston City Of STP.
Available with a free Klarifi account
See the full treatment train at Creston City Of STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 3
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Industrial users and pretreatment
Industries that discharge process wastewater to Creston City Of STP, from the plant's pretreatment programme records.
- Industrial users
- 1
- on record
On record: Zfs - Creston (Creston). Most users are in food and beverage.
Unlock the details behind these industrial users
Discharge flow, federal category, source documents and contacts for every industrial user of Creston City Of STP. Free with a Klarifi account.
Key contacts
1 verified contact for Creston City Of STP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Creston City Of STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Creston · 4 mi away
—
Afton · 10 mi away
0.1 MGD
Orient · 11 mi away
—
Arispe · 12 mi away
—
Prescott · 12 mi away
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Lenox · 15 mi away
0.2 MGD
Macksburg · 16 mi away
—
Thayer · 17 mi away
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Creston 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 August 18, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms