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Elk City WWTP

Id-14, Elk City, ID 83525 · Idaho County · Publicly Owned Treatment Works

Average flow
0.16 MGD
Design flow
0.06 MGD
NPDES permit
ID0022012
Administratively continued
Permit expires
April 2020
Population served
147
CWNS 2022

Elk City WWTP is a publicly owned wastewater treatment works in Elk City, Idaho County, Idaho treating an average of 0.16 million gallons per day against a permitted design capacity of 0.06 MGD, serving about 147 residents. It discharges under NPDES permit ID0022012 (administratively continued), which expires in April 2020, with 2 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in May 2015.

Treatment technology

2 treatment structures and unit processes identified at Elk City WWTP.

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Compliance snapshot (last 3 years)

Total violations
2
Effluent violations
2

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 Elk City WWTP in EPA's ICIS system.

Formal actions
2
0 since FY2020
Penalties assessed
$3,700
all cases
Compliance actions
$24,200
required by EPA orders
EPA inspections
0
none on record

Latest case · May 2015

ELK CITY WATER AND SEWER ASSOCIATION

Administrative order · CWA, NPDES Discharge without a Permit · Final Order No Penalty · Compliance actions $14,000

EPA's description of the case:

“Clean Water Act violations.”

Source: EPA ECHO, civil enforcement case 10-2010-0116.

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

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Key contacts

Decision-makers at Elk City WWTP.

No verified contacts on file yet

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Nearby wastewater treatment plants in Idaho

Grangeville WWTP

Grangeville · 33 mi away

0.42 MGD

Kooskia WWTP

Kooskia · 33 mi away

—

Kamiah Regional STP

Kamiah · 40 mi away

0.16 MGD

White Bird Sewage Treatment System

White Bird · 42 mi away

—

Cottonwood STP

Cottonwood · 45 mi away

0.22 MGD

Weippe WWTP

Weippe · 45 mi away

0.27 MGD

Nezperce WWTP

Nezperce · 48 mi away

0.008 MGD

Pierce WWTP

Pierce · 49 mi away

0.17 MGD

Elk City 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 September 18, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms


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