How much wastewater does Grantsville WWTP treat?

Grantsville WWTP treats an average of 0.05 MGD and is permitted for a design flow of 0.1 MGD.

What treatment technology does Grantsville WWTP use?

Klarifi has identified 3 treatment structures and unit processes at the Grantsville facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Grantsville WWTP?

The facility discharges under NPDES permit WV0041181, currently administratively continued, expiring May 2014.

Is Grantsville WWTP in compliance?

Discharge monitoring reports show 523 violations at Grantsville WWTP in the last three years, 91 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Grantsville WWTP and how do I contact them?

Grantsville WWTP is a publicly owned treatment works in Grantsville, West Virginia. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Grantsville WWTP

Grantsville, WV 26147 · Calhoun County · Publicly Owned Treatment Works

Average flow: 0.05 MGD

Design flow: 0.1 MGD

NPDES permit: WV0041181; Administratively continued

Permit expires: May 2014

Population served: 786; CWNS 2022

Grantsville WWTP is a publicly owned wastewater treatment works in Grantsville, Calhoun County, West Virginia treating an average of 0.05 million gallons per day against a permitted design capacity of 0.1 MGD, serving about 786 residents. It discharges under NPDES permit WV0041181 (administratively continued), which expires in May 2014, with 523 recorded violations in the last three years.

Treatment technology

3 treatment structures and unit processes identified at Grantsville WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 523

Effluent violations: 91

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

Key contacts

Decision-makers at Grantsville WWTP.

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Nearby wastewater treatment plants in West Virginia

Mt. Zion Psd

Grantsville · 10 mi away

0.0061 MGD

City Of Glenville

Glenville · 13 mi away

0.62 MGD

Glenville Utility Water Treatment Plant

Glenville · 14 mi away

0.62 MGD

City Of Spencer

Spencer · 16 mi away

0.47 MGD

Town Of Reedy

Reedy · 18 mi away

0.01 MGD

Town Of Sand Fork

Sand Fork · 18 mi away

0.0066 MGD

Town Of Elizabeth

Elizabeth · 19 mi away

0.11 MGD

Harrisville Town Of

Harrisville · 19 mi away

0.24 MGD

Grantsville 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 August 5, 2026.

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

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