Warren Waste Water Treatment Plant
32360 Warkop Avenue, Warren, MI 48093 · Macomb County · Publicly Owned Treatment Works
- Average flow
- 16.05 MGD
- Design flow
- —
- NPDES permit
- MI0024295
- Administratively continued
- Permit expires
- October 2025
- Population served
- 136,810
- CWNS 2022
Warren Waste Water Treatment Plant is a publicly owned wastewater treatment works in Warren, Macomb County, Michigan treating an average of 16.05 million gallons per day, serving about 136,810 residents. It discharges under NPDES permit MI0024295 (administratively continued), which expires in October 2025, with 9 recorded violations in the last three years. EPA has recorded 3 formal enforcement actions naming the plant, the latest in June 2007.
Treatment technology
One treatment structure or unit process identified at Warren Waste Water Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Warren Waste Water Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 9
- Effluent violations
- 9
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 Warren Waste Water Treatment Plant in EPA's ICIS system.
- Formal actions
- 3
- 0 since FY2020
- Penalties assessed
- $17,241
- all cases
- EPA inspections
- 3
- latest Sep 2004
Latest case · Jun 2007
City of Warren Michigan
Administrative order · CERCLA, EPCRA, Emergency Release Notification Section 313 Program · Final Order With Penalty · Penalty $8,766
EPA's description of the case:
“On June 25, 2003, at 7:15 p.m., the facility had a 336-pound release of chlorine into the environment. Chlorine is a hazardous substance under CERCLA and an extremely hazardous substance under EPCRA…”
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Source: EPA ECHO, civil enforcement case 05-2005-0021.
Full case history with a free Klarifi account
Every action against Warren Waste Water Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Industrial users and pretreatment
Industries that discharge process wastewater to Warren Waste Water Treatment Plant, from the plant's pretreatment programme records.
- Industrial users
- 14
- 4 categorical
- Sampled for PFAS
- 6
- 2023
- Above 12 ng/L PFOS
- 6
- highest 11,000 ng/L
The highest PFOS samples came from Modern Hard Chrome Service Co (Warren), 11,000 ng/L; B&L Plating (Warren), 401 ng/L; General Motors Technical Center (Warren), 300 ng/L. Most users are in metal finishing and plating and automotive, metal and equipment manufacturing.
Industrial users of Warren Waste Water Treatment Plant →PFAS sources at all Michigan plants →
Unlock all 14 industrial users of this plant
Discharge flow, federal category, full PFAS sampling history, source documents and contacts for every industrial user of Warren Waste Water Treatment Plant. Free with a Klarifi account.
Key contacts
7 verified contacts for Warren Waste Water Treatment Plant, with validated emails and direct phone numbers.
Unlock 7 verified contacts (4 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Warren Waste Water Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Michigan
Madison Heights · 5 mi away
11.52 MGD
Saint Clair Shores · 7 mi away
10.63 MGD
Grosse Pointe Woods · 9 mi away
26.28 MGD
Mount Clemens · 9 mi away
3.7 MGD
Beverly Hills · 12 mi away
0.87 MGD
Pontiac · 14 mi away
14.29 MGD
New Baltimore · 17 mi away
1.05 MGD
Detroit · 18 mi away
416.18 MGD
Warren Waste Water Treatment Plant: 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 May 19, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Filter press · FOG · all terms