Id-14, Elk City, ID 83525 · Idaho County · Publicly Owned Treatment Works
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.
2 treatment structures and unit processes identified at Elk City WWTP.
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See the full treatment train at Elk City WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for Elk City WWTP in EPA's ICIS system.
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.
Decision-makers at Elk City WWTP.
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Grangeville · 33 mi away
0.42 MGD
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Kamiah · 40 mi away
0.16 MGD
White Bird · 42 mi away
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Cottonwood · 45 mi away
0.22 MGD
Weippe · 45 mi away
0.27 MGD
Nezperce · 48 mi away
0.008 MGD
Pierce · 49 mi away
0.17 MGD
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