Wampum Lake is a mesotrophic lake in Cook County, Illinois. Water quality is graded B based on 2 sampling years through 2021. Compared to the 67 other monitored lakes in Cook County, Wampum Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Illinois DNR, last sampled 2021-09-29. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 6.9 ft. Phosphorus level: 16 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.9 ft | C |
| Phosphorus | 16 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Wampum Lake
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Fishing Wampum Lake
Water Temperature
Wampum Lake averages about 78°F at the surface in summer, usually warmest in Aug (about 81°F) and coldest in Oct (about 59°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 196 field readings (2010–2022) via the EPA Water Quality Portal. See the full Wampum Lake water temperature breakdown →
Location
County Ranking
Ranked #5 of 68 lakes in Cook County
Cleaner Lakes Within 30 Miles
Wampum Lake holds Grade B. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Cook County
Explore Wampum Lake across LakeGrade
More Illinois Lake Rankings
Other Grade B Lakes in Illinois
Mesotrophic Lakes in Illinois
More records, surveys & data sources
Regulated Pollution Sources Nearby
30 EPA-permitted facilities operate within about 5 miles of Wampum Lake under Clean Water Act (NPDES) discharge permits. 4 facilities have a reported Clean Water Act violation in the past three years.
- Envirite Of Il Inc - HarveyHarvey · 2.4 mi away · NPDES IL0071285Recent violation
- Allied Tube And Conduit CorporationHarvey · 3.1 mi away · NPDES IL0063649Recent violation
- Allied Tube And Conduit Corp - SmpfHarvey · 3.1 mi away · NPDES IL0078930Recent violation
- Illinois Central RailroadHomewood · 3.6 mi away · NPDES IL0005193Recent violation
- Material Service Corp-Yard 41Thornton · 1.4 mi away · NPDES IL0001937
- Ely'S Mobile Home Park StpHomewood · 2.6 mi away · NPDES IL0056065
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-09-29
Monitoring stations: 2