Harlan City Of STP
910 Maple Road, Harlan, IA 51537 · Shelby County · Publicly Owned Treatment Works
- Average flow
- 0.62 MGD
- Design flow
- 1.99 MGD
- NPDES permit
- IA0021342
- Effective
- Permit expires
- June 2029
- Population served
- 5,337
- CWNS 2022
Harlan City Of STP is a publicly owned wastewater treatment works in Harlan, Shelby County, Iowa treating an average of 0.62 million gallons per day against a permitted design capacity of 1.99 MGD, serving about 5,337 residents. It discharges under NPDES permit IA0021342 (effective), which expires in June 2029, with 4 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Harlan City Of STP.
Available with a free Klarifi account
See the full treatment train at Harlan City Of STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
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 Harlan City Of STP, from the plant's pretreatment programme records.
- Industrial users
- 1
- on record
On record: Monogram Prepared Meats (Harlan). 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 Harlan City Of STP. Free with a Klarifi account.
Key contacts
Decision-makers at Harlan City Of STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Iowa
Shelby · 10 mi away
—
Portsmouth · 11 mi away
—
Irwin · 11 mi away
—
Earling · 11 mi away
0.04 MGD
Kimballton · 12 mi away
0.04 MGD
Walnut · 12 mi away
0.17 MGD
Avoca · 12 mi away
0.13 MGD
Elk Horn · 13 mi away
0.04 MGD
Harlan 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 May 17, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms