How much wastewater does Ralston treat?

Ralston is permitted for a design flow of 0.05 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Ralston use?

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

What is the NPDES permit for Ralston?

The facility discharges under NPDES permit OK0020761, currently expired, expiring July 2025.

Is Ralston in compliance?

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

Who operates Ralston and how do I contact them?

Ralston is a publicly owned treatment works in Ralston, Oklahoma. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Ralston

Ralston, OK 74650 · Pawnee County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.05 MGD

NPDES permit: OK0020761; Expired

Permit expires: July 2025

Population served: 374; CWNS 2022

Ralston is a publicly owned wastewater treatment plant in Ralston, Pawnee County, Oklahoma, serving about 374 residents. It discharges under NPDES permit OK0020761 (expired), which expires in July 2025, with 0 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Ralston.

Available with a free Klarifi account

See the full treatment train at Ralston: 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

Decision-makers at Ralston.

No verified contacts on file yet

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Nearby wastewater treatment plants in Oklahoma

Fairfax Public Works Auth

Fairfax · 5 mi away

0.16 MGD

Pawnee

Pawnee · 13 mi away

0.12 MGD

Shidler, City Of

Shidler · 19 mi away

0.13 MGD

Kaw City WWTF

Kaw City · 20 mi away

0.03 MGD

Cleveland South WWTP

Cleveland · 21 mi away

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Ponca City, City Of

Ponca City · 22 mi away

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Pawhuska, City Of

Pawhuska · 26 mi away

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Yale City Of / Yale City Of

Yale · 27 mi away

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Ralston: 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 June 18, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms

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