What is the address of Mason STP?

The address on the plant’s EPA facility record is 187 Main Stree, Mason, TN 38049, in Tipton County. Its coordinates are 35.4065, -89.5367. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Mason STP treat?

Mason STP is permitted for a design flow of 0.11 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Mason STP use?

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

What is the NPDES permit for Mason STP?

The facility discharges under NPDES permit TN0026620, currently effective, expiring October 2027.

Is Mason STP in compliance?

Discharge monitoring reports show 17 violations at Mason STP in the last three years, 13 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Mason STP and how do I contact them?

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

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Mason STP

187 Main Stree, Mason, TN 38049 · Tipton County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.11 MGD

NPDES permit: TN0026620; Effective

Permit expires: October 2027

Population served: 1,120; CWNS 2022

Mason STP is a publicly owned wastewater treatment works in Mason, Tipton County, Tennessee, serving about 1,120 residents. It discharges under NPDES permit TN0026620 (effective), which expires in October 2027, with 17 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Mason STP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 17

Effluent violations: 13

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

Key contacts

Decision-makers at Mason STP.

No verified contacts on file yet

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Nearby wastewater treatment plants in Tennessee

Memphis Regional Megasite

Stanton · 7 mi away

0.17 MGD

Stanton Lagoon

Stanton · 9 mi away

0.07 MGD

Fayette County D/b/a Arlington Mobile Park Lagoon

Arlington · 10 mi away

—

Somerville Lagoon

Somerville · 11 mi away

0.48 MGD

Shelby County Government- Chapel Hill S.D. STP

Memphis · 12 mi away

0.03 MGD

Arlington STP

Arlington · 12 mi away

1.42 MGD

Oakland - Mechanical WWTP

Oakland · 13 mi away

8.18 MGD

Covington Wastewater Treatment Plant

Covington · 15 mi away

1.63 MGD

Mason 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 18, 2026.

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

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