What is the address of Fairfield WWTP?

The address on the plant’s EPA facility record is 28119 S Wa-27, Fairfield, WA 99012, in Spokane County. Its coordinates are 47.3988, -117.1732. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Fairfield WWTP treat?

Fairfield WWTP treats an average of 0.06 MGD and is permitted for a design flow of 1.16 MGD.

What treatment technology does Fairfield WWTP use?

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

What is the NPDES permit for Fairfield WWTP?

The facility discharges under NPDES permit WA0045489, currently administratively continued, expiring April 2014.

Is Fairfield WWTP in compliance?

Discharge monitoring reports show 1 violation at Fairfield WWTP in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Fairfield WWTP and how do I contact them?

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

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Fairfield WWTP

28119 S Wa-27, Fairfield, WA 99012 · Spokane County · Publicly Owned Treatment Works

Average flow: 0.06 MGD

Design flow: 1.16 MGD

NPDES permit: WA0045489; Administratively continued

Permit expires: April 2014

Population served: 681; CWNS 2022

Fairfield WWTP is a publicly owned wastewater treatment works in Fairfield, Spokane County, Washington treating an average of 0.06 million gallons per day against a permitted design capacity of 1.16 MGD, serving about 681 residents. It discharges under NPDES permit WA0045489 (administratively continued), which expires in April 2014, with 1 recorded violation in the last three years.

Treatment technology

One treatment structure or unit process identified at Fairfield WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 1

Effluent violations: 1

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

Key contacts

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

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

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Nearby wastewater treatment plants in Washington

Rockford WWTP

Rockford · 4 mi away

0.07 MGD

Spangle STP

Spangle · 10 mi away

0.02 MGD

Tekoa STP

Tekoa · 13 mi away

0.12 MGD

Rosalia STP

Rosalia · 14 mi away

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Oakesdale STP

Oakesdale · 19 mi away

0.09 MGD

Medical Lake WWTP

Medical Lake · 27 mi away

0.38 MGD

St John WWTP

Saint John · 29 mi away

0.07 MGD

Palouse Wastewater Treatment Plant

Palouse · 34 mi away

0.07 MGD

Fairfield 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 12, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms

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