Dewar Sanitary District STP
Third Street And Lathrop Street, Dewar, IA 50623 · Black Hawk County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.08 MGD
- NPDES permit
- IA0063908
- Administratively continued
- Permit expires
- October 2021
- Population served
- 157
- CWNS 2022
Dewar Sanitary District STP is a publicly owned wastewater treatment works in Dewar, Black Hawk County, Iowa, serving about 157 residents. It discharges under NPDES permit IA0063908 (administratively continued), which expires in October 2021, with 2 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Dewar Sanitary District STP.
Available with a free Klarifi account
See the full treatment train at Dewar Sanitary District STP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Dewar Sanitary District STP.
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Nearby wastewater treatment plants in Iowa
Dunkerton · 5 mi away
0.16 MGD
Evansdale · 6 mi away
—
Gilbertville · 8 mi away
0.11 MGD
Jesup · 9 mi away
0.2 MGD
Cedar Falls · 11 mi away
4.83 MGD
Denver · 11 mi away
0.28 MGD
Fairbank · 12 mi away
0.15 MGD
Readlyn · 12 mi away
0.12 MGD
Dewar Sanitary District 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 · Sludge dewatering · Biological nutrient removal · all terms