What is the address of Twelve Mile Creek WWTP?

The address on the plant’s EPA facility record is 8299 Kensington Dr, Waxhaw, NC 28173, in Union County. Its coordinates are 34.9526, -80.7642. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Twelve Mile Creek WWTP treat?

Twelve Mile Creek WWTP is permitted for a design flow of 6 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Twelve Mile Creek WWTP use?

Klarifi has identified 4 treatment structures and unit processes at the Waxhaw facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Twelve Mile Creek WWTP?

The facility discharges under NPDES permit NC0085359, currently administratively continued, expiring December 2025.

Is Twelve Mile Creek WWTP in compliance?

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

Who operates Twelve Mile Creek WWTP and how do I contact them?

Twelve Mile Creek WWTP is a publicly owned treatment works in Waxhaw, North Carolina. Klarifi lists 4 verified decision-maker contacts for this facility, available with a free trial.

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Twelve Mile Creek WWTP

8299 Kensington Dr, Waxhaw, NC 28173 · Union County · Publicly Owned Treatment Works

Average flow: —

Design flow: 6 MGD

NPDES permit: NC0085359; Administratively continued

Permit expires: December 2025

Population served: 53,220; CWNS 2022

Twelve Mile Creek WWTP is a publicly owned wastewater treatment works in Waxhaw, Union County, North Carolina, serving about 53,220 residents. It discharges under NPDES permit NC0085359 (administratively continued), which expires in December 2025, with 1 recorded violation in the last three years.

Treatment technology

4 treatment structures and unit processes identified at Twelve Mile Creek WWTP.

Available with a free Klarifi account

See the full treatment train at Twelve Mile Creek 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

4 verified contacts for Twelve Mile Creek WWTP, with validated emails and direct phone numbers.

Unlock 4 verified contacts (1 more than shown)

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

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Nearby wastewater treatment plants in North Carolina

Irwin Creek Wastewater Treatment Plant

Charlotte · 19 mi away

10.55 MGD

Grassy Branch WWTP

Monroe · 19 mi away

—

Yadkin River Water Treatment Plant

Unionville · 20 mi away

0.63 MGD

Eagle Road WWTP

Cramerton · 26 mi away

0.52 MGD

West Stanly WWTP

Oakboro · 34 mi away

0.64 MGD

Town Of Mooresville

Mooresville · 40 mi away

—

Norwood WWTP

Norwood · 41 mi away

—

Anson County Regional WWTP

Wadesboro · 43 mi away

—

Twelve Mile Creek 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 March 6, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms

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