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Columbia City Water Department

112 S Chauncey St, Columbia City, IN 46725 · Whitley County · Publicly Owned Treatment Works

Average flow
2.48 MGD
Design flow
3.5 MGD
NPDES permit
IN0022624
Effective
Permit expires
December 2027
Population served
9,892
CWNS 2022

Columbia City Water Department is a publicly owned wastewater treatment plant in Columbia City, Whitley County, Indiana treating an average of 2.48 million gallons per day against a permitted design capacity of 3.5 MGD, serving about 9,892 residents. It discharges under NPDES permit IN0022624 (effective), which expires in December 2027, with 47 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in December 1997.

Treatment technology

2 treatment structures and unit processes identified at Columbia City Water Department.

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See the full treatment train at Columbia City Water Department: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations
47
Effluent violations
37

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

EPA enforcement history

Federal civil enforcement cases, compliance inspections and informal actions recorded for Columbia City Water Department in EPA's ICIS system.

Formal actions
1
0 since FY2020
Penalties assessed
$1,000
all cases
EPA inspections
0
none on record

Latest case · Dec 1997

COLUMBIA, CITY OF

Administrative order · CWA, Sewage Sludge Disposal · Final Order With Penalty · Penalty $1,000

Source: EPA ECHO, civil enforcement case 05-1997-0393.

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Every action against Columbia City Water Department with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.

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Key contacts

5 verified contacts for Columbia City Water Department, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Columbia City Water Department, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Indiana

Tri-Lakes Regional Sewer District

Columbia City · 7 mi away

0.35 MGD

South Whitley WWTP

South Whitley · 9 mi away

0.16 MGD

Churubusco Municipal STP

Churubusco · 11 mi away

0.23 MGD

Pierceton WWTP

Pierceton · 12 mi away

0.22 MGD

Dawn Lakes Regional Sewer District

Huntington · 13 mi away

0.0063 MGD

Roanoke WWTP

Roanoke · 14 mi away

0.17 MGD

Bippus Regional Sewer District

Bippus · 15 mi away

0.0078 MGD

0.13 MGD

Columbia City Water Department: 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 October 9, 2026.

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


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