What is the address of Delmar, City Of STP?

The address on the plant’s EPA facility record is Main & 130th St, Delmar, IA 52037, in Clinton County. Its coordinates are 41.9922, -90.5993. For some plants the record holds the utility’s mailing address rather than the plant gate.

What treatment technology does Delmar, City Of STP use?

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

What is the NPDES permit for Delmar, City Of STP?

The facility discharges under NPDES permit IA0061913, currently effective, expiring January 2028.

Is Delmar, City Of STP in compliance?

Discharge monitoring reports show 14 violations at Delmar, City Of STP in the last three years, 4 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Delmar, City Of STP

Main & 130th St, Delmar, IA 52037 · Clinton County · Publicly Owned Treatment Works

Average flow: —

Design flow: —

NPDES permit: IA0061913; Effective

Permit expires: January 2028

Population served: 542; CWNS 2022

Delmar, City Of STP is a publicly owned wastewater treatment works in Delmar, Clinton County, Iowa, serving about 542 residents. It discharges under NPDES permit IA0061913 (effective), which expires in January 2028, with 14 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Delmar, City Of STP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 14

Effluent violations: 4

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

Key contacts

1 verified contact for Delmar, 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 Delmar, City Of STP, plus the full compliance history and discharge data.

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Delmar, 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 August 4, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms

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