What is the address of Ryan WWTP?

The address on the plant’s EPA facility record is S Side 300th Street At Illinois Central Rr, Ryan, IA 52330, in Delaware County. Its coordinates are 42.3526, -91.4738. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Ryan WWTP treat?

Ryan WWTP is permitted for a design flow of 0.66 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Ryan WWTP use?

Klarifi has identified one treatment structure or unit process at the Ryan facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Ryan WWTP?

The facility discharges under NPDES permit IA0041785, currently effective, expiring August 2030.

Is Ryan WWTP in compliance?

Discharge monitoring reports show no violations at Ryan WWTP in the last three years.

Who operates Ryan WWTP and how do I contact them?

Ryan WWTP is a publicly owned treatment works in Ryan, Iowa. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

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Ryan WWTP

S Side 300th Street At Illinois Central Rr, Ryan, IA 52330 · Delaware County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.66 MGD

NPDES permit: IA0041785; Effective

Permit expires: August 2030

Population served: 350; CWNS 2022

Ryan WWTP is a publicly owned wastewater treatment works in Ryan, Delaware County, Iowa, serving about 350 residents. It discharges under NPDES permit IA0041785 (effective), which expires in August 2030, with 0 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Ryan WWTP.

Available with a free Klarifi account

See the full treatment train at Ryan WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 0

Effluent violations: 0

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

Key contacts

2 verified contacts for Ryan WWTP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Ryan WWTP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Iowa

Coggon WWTP

Coggon · 6 mi away

0.13 MGD

Prairieburg City Of STP

Prairieburg · 8 mi away

—

Manchester WWTP

Manchester · 8 mi away

0.64 MGD

Delhi City Of STP

Delhi · 9 mi away

—

Masonville, City Of-STP

Masonville · 10 mi away

—

Troy Mills Sanitary District

Walker · 11 mi away

—

Delaware City Of STP

Delaware · 11 mi away

—

Central City City Of STP

Central City · 11 mi away

0.12 MGD

Ryan 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 11, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms

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