What is the address of Garrison WWTP?

The address on the plant’s EPA facility record is 61st St & 18th Ave Dr, Garrison, IA 52229, in Benton County. Its coordinates are 42.1369, -92.1368. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Garrison WWTP treat?

Garrison WWTP is permitted for a design flow of 0.27 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Garrison WWTP use?

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

What is the NPDES permit for Garrison WWTP?

The facility discharges under NPDES permit IA0056804, currently effective, expiring May 2028.

Is Garrison WWTP in compliance?

Discharge monitoring reports show 2 violations at Garrison WWTP in the last three years, 2 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Garrison WWTP and how do I contact them?

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

Try for free Log in

Garrison WWTP

61st St & 18th Ave Dr, Garrison, IA 52229 · Benton County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.27 MGD

NPDES permit: IA0056804; Effective

Permit expires: May 2028

Population served: 344; CWNS 2022

Garrison WWTP is a publicly owned wastewater treatment works in Garrison, Benton County, Iowa, serving about 344 residents. It discharges under NPDES permit IA0056804 (effective), which expires in May 2028, with 2 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Garrison WWTP.

Available with a free Klarifi account

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

Create a free account

Compliance snapshot (last 3 years)

Total violations: 2

Effluent violations: 2

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

Key contacts

1 verified contact for Garrison WWTP, with validated emails and direct phone numbers.

Unlock 1 verified contact

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

Try Klarifi free

Nearby wastewater treatment plants in Iowa

Vinton WWTP

Vinton · 8 mi away

1.11 MGD

Mt Auburn WWTP

Mount Auburn · 8 mi away

—

Van Horne WWTP

Van Horne · 9 mi away

0.09 MGD

Dysart City Of STP

Dysart · 10 mi away

0.28 MGD

Newhall WWTP

Newhall · 13 mi away

0.28 MGD

La Porte City WWTP

La Porte City · 13 mi away

0.27 MGD

Elberon City Of STP

Elberon · 13 mi away

—

Brandon WWTP

Brandon · 14 mi away

0.03 MGD

Garrison 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 February 28, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms

Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free