100 Martin St SW PO Box 165, St John, ND 58369 · Rolette County · Publicly Owned Treatment Works
St John City Of is a publicly owned wastewater treatment plant in St John, Rolette County, North Dakota, serving about 350 residents. It discharges under NPDES permit NDG323248 (effective), which expires in September 2029, with 11 recorded violations in the last three years.
One treatment structure or unit process identified at St John City Of.
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See the full treatment train at St John City Of: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
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Names, validated emails and direct phone numbers for decision-makers at St John City Of, plus the full compliance history and discharge data.
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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 · Filter press · FOG · all terms