Dewitt WWTP
6th St, Dewitt, IA 52742 · Clinton County · Publicly Owned Treatment Works
- Average flow
- 0.82 MGD
- Design flow
- 3.03 MGD
- NPDES permit
- IA0035271
- Effective
- Permit expires
- September 2029
- Population served
- 5,563
- CWNS 2022
Dewitt WWTP is a publicly owned wastewater treatment works in Dewitt, Clinton County, Iowa treating an average of 0.82 million gallons per day against a permitted design capacity of 3.03 MGD, serving about 5,563 residents. It discharges under NPDES permit IA0035271 (effective), which expires in September 2029, with 6 recorded violations in the last three years.
Treatment technology
5 treatment structures and unit processes identified at Dewitt WWTP.
Available with a free Klarifi account
See the full treatment train at Dewitt WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 6
- 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 Dewitt WWTP, from the plant's pretreatment programme records.
- Industrial users
- 1
- on record
On record: Guardian Industries (Dewitt). Most users are in other industries.
Unlock the details behind these industrial users
Discharge flow, federal category, source documents and contacts for every industrial user of Dewitt WWTP. Free with a Klarifi account.
Key contacts
Decision-makers at Dewitt WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Iowa
Mccausland · 7 mi away
—
Welton · 7 mi away
0.01 MGD
Eldridge · 7 mi away
0.21 MGD
Long Grove · 8 mi away
0.08 MGD
Donahue · 11 mi away
—
Calamus · 12 mi away
—
Charlotte · 12 mi away
—
Dixon · 13 mi away
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Dewitt 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 March 28, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms