4726 Lagoon Lane, Laona, Wisconsin, Laona, WI 54541 · Forest County · Publicly Owned Treatment Works
Laona Sanitary Dist is a publicly owned wastewater treatment plant in Laona, Forest County, Wisconsin treating an average of 0.1 million gallons per day against a permitted design capacity of 0.11 MGD, serving about 1,243 residents. It discharges under NPDES permit WI0028592 (expired), which expires in March 2023, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in March 2026.
2 treatment structures and unit processes identified at Laona Sanitary Dist.
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See the full treatment train at Laona Sanitary Dist: 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 Laona Sanitary Dist in EPA's ICIS system.
Latest case · Mar 2026
Laona Sanitary District | UAO
Administrative order · SDWA, National Drinking Water Regulations · Final Order No Penalty · Compliance actions $4,303
EPA's description of the case:
“The EPA is issuing Administrative Orders (AO or Order) to public water systems for failure to comply with the Lead and Copper Rule Revisions requirements under the Safe Drinking Water Act. EPA Region…”
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Source: EPA ECHO, civil enforcement case 05-2025-1069.
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Every action against Laona Sanitary Dist with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Decision-makers at Laona Sanitary Dist.
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0.03 MGD
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0.03 MGD
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0.03 MGD
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Rhinelander · 37 mi away
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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 November 7, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms