What treatment technology does Mystic City Of STP use?

Klarifi has identified 2 treatment structures and unit processes at the Mystic facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Mystic City Of STP?

The facility discharges under NPDES permit IA0071064, currently effective, expiring June 2031.

Is Mystic City Of STP in compliance?

Discharge monitoring reports show 5 violations at Mystic City Of STP in the last three years, 5 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Mystic City Of STP and how do I contact them?

Mystic City Of STP is a publicly owned treatment works in Mystic, Iowa. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Mystic City Of STP

Mystic, IA 52574 · Appanoose County · Publicly Owned Treatment Works

Average flow: —

Design flow: —

NPDES permit: IA0071064; Effective

Permit expires: June 2031

Population served: 412; CWNS 2022

Mystic City Of STP is a publicly owned wastewater treatment works in Mystic, Appanoose County, Iowa, serving about 412 residents. It discharges under NPDES permit IA0071064 (effective), which expires in June 2031, with 5 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Mystic City Of STP.

Available with a free Klarifi account

See the full treatment train at Mystic City Of STP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 5

Effluent violations: 5

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

1 verified contact for Mystic City Of STP, with validated emails and direct phone numbers.

Unlock 1 verified contact

Names, validated emails and direct phone numbers for decision-makers at Mystic City Of STP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Iowa

Centerville City Of STP (west)

Centerville · 4 mi away

0.25 MGD

Williamson City Of (rathbun Regional Water Assn)

Williamson · 4 mi away

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Douds/leando,city Of(rathbun Regional Water Assoc)

Douds · 4 mi away

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Centerville City Of STP (east)

Centerville · 4 mi away

0.52 MGD

Plano Iowa-Adlm-Fms

Plano · 6 mi away

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Cincinnati City Of STP

Cincinnati · 9 mi away

0.2 MGD

Moravia City Of STP

Moravia · 10 mi away

0.06 MGD

Exline, City Of, STP

Exline · 10 mi away

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Mystic 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 February 1, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms

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