What is the address of Niles WWTP?

The address on the plant’s EPA facility record is 999 Summit Street Extension, Niles, OH 44446, in Trumbull County. Its coordinates are 41.1718, -80.7373. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Niles WWTP treat?

Niles WWTP treats an average of 5.01 MGD and is permitted for a design flow of 6.2 MGD.

What treatment technology does Niles WWTP use?

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

What is the NPDES permit for Niles WWTP?

The facility discharges under NPDES permit OH0026743, currently effective, expiring September 2028.

Is Niles WWTP in compliance?

Discharge monitoring reports show 9 violations at Niles WWTP in the last three years, 9 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Niles WWTP and how do I contact them?

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

Try for free Log in

Niles WWTP

999 Summit Street Extension, Niles, OH 44446 · Trumbull County · Publicly Owned Treatment Works

Average flow: 5.01 MGD

Design flow: 6.2 MGD

NPDES permit: OH0026743; Effective

Permit expires: September 2028

Population served: 22,194; CWNS 2022

Niles WWTP is a publicly owned wastewater treatment works in Niles, Trumbull County, Ohio treating an average of 5.01 million gallons per day against a permitted design capacity of 6.2 MGD, serving about 22,194 residents. It discharges under NPDES permit OH0026743 (effective), which expires in September 2028, with 9 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Niles WWTP.

Available with a free Klarifi account

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

Create a free account

Compliance snapshot (last 3 years)

Total violations: 9

Effluent violations: 9

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

Key contacts

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

Unlock 2 verified contacts

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

Try Klarifi free

Nearby wastewater treatment plants in Ohio

Meander WPCF

Mineral Ridge · 2 mi away

3.72 MGD

Girard WWTP

Girard · 3 mi away

3.06 MGD

City Of Warren Water Pollution Control

Warren · 4 mi away

13.31 MGD

Trumbull Mosquito Creek WWTP

Warren · 6 mi away

4.55 MGD

Fox Den WWTP

Warren · 6 mi away

0.0092 MGD

Vienna WWTP No 1

Vienna · 6 mi away

0.02 MGD

Waste Water Treatment Plant

Youngstown · 8 mi away

33.2 MGD

Odot Brookfield Maintenance Outpost

Hubbard · 9 mi away

0.00013 MGD

Niles 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 September 16, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms

Try Klarifi for free

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

Try for free