Carroll WWTP
1400 E Anthony St, Carroll, IA 51401 · Carroll County · Publicly Owned Treatment Works
- Average flow
- 1.04 MGD
- Design flow
- 6.3 MGD
- NPDES permit
- IA0021377
- Effective
- Permit expires
- August 2027
- Population served
- 10,554
- CWNS 2022
Carroll WWTP is a publicly owned wastewater treatment works in Carroll, Carroll County, Iowa treating an average of 1.04 million gallons per day against a permitted design capacity of 6.3 MGD, serving about 10,554 residents. It discharges under NPDES permit IA0021377 (effective), which expires in August 2027, with 1 recorded violation in the last three years.
Treatment technology
4 treatment structures and unit processes identified at Carroll WWTP.
Available with a free Klarifi account
See the full treatment train at Carroll WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
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 Carroll WWTP, from the plant's pretreatment programme records.
- Industrial users
- 2
- on record
On record: Carroll County Solid Waste Management Commission (Carroll); Farmland Foods Incorporated (Carroll). Most users are in food and beverage and landfills and waste management.
Unlock the details behind these industrial users
Discharge flow, federal category, source documents and contacts for every industrial user of Carroll WWTP. Free with a Klarifi account.
Key contacts
6 verified contacts for Carroll WWTP, with validated emails and direct phone numbers.
Unlock 6 verified contacts (3 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Carroll WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Iowa
Carroll · 6 mi away
0.0071 MGD
Lidderdale · 6 mi away
—
Glidden · 7 mi away
0.15 MGD
Halbur · 8 mi away
—
Dedham · 10 mi away
—
Arcadia · 11 mi away
—
Lanesboro · 11 mi away
—
Templeton · 12 mi away
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Carroll WWTP: 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 February 9, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms