What is the address of Monticello WWTP?

The address on the plant’s EPA facility record is 1401 Hart Boulevard, Monticello, MN 55362, in Wright County. Its coordinates are 45.2985, -93.7750. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Monticello WWTP treat?

Monticello WWTP treats an average of 1.04 MGD and is permitted for a design flow of 2.36 MGD.

What treatment technology does Monticello WWTP use?

Klarifi has identified 2 treatment structures and unit processes at the Monticello facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Monticello WWTP?

The facility discharges under NPDES permit MN0020567, currently effective, expiring July 2031.

Is Monticello WWTP in compliance?

Discharge monitoring reports show 106 violations at Monticello WWTP in the last three years, 8 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Monticello WWTP and how do I contact them?

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

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Monticello WWTP

1401 Hart Boulevard, Monticello, MN 55362 · Wright County · Publicly Owned Treatment Works

Average flow: 1.04 MGD

Design flow: 2.36 MGD

NPDES permit: MN0020567; Effective

Permit expires: July 2031

Population served: 14,455; CWNS 2022

Monticello WWTP is a publicly owned wastewater treatment works in Monticello, Wright County, Minnesota treating an average of 1.04 million gallons per day against a permitted design capacity of 2.36 MGD, serving about 14,455 residents. It discharges under NPDES permit MN0020567 (effective), which expires in July 2031, with 106 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Monticello WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 106

Effluent violations: 8

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

Key contacts

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

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

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Nearby wastewater treatment plants in Minnesota

Big Lake WWTP

Big Lake · 1 mi away

0.73 MGD

Otsego WWTP West

Otsego · 6 mi away

0.49 MGD

Albertville WWTP

Albertville · 7 mi away

0.56 MGD

Becker WWTP

Becker · 8 mi away

0.9 MGD

Saint Michael WWTP

Saint Michael · 9 mi away

1.03 MGD

Elk River WWTP

Elk River · 11 mi away

1.31 MGD

Annandale/maple Lake WWTF

Maple Lake · 11 mi away

0.67 MGD

Rogers WWTP

Rogers · 12 mi away

1.16 MGD

Monticello 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 · WWTP · Biosolids · all terms

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