Hillsborough Water Quality Report
3 cities ranked · Average grade: B · Illinois
Avg Score
78.8
Cities Ranked
3
Health Violations
2
PFAS Detected
0
78.8
County avg score
3
Cities ranked
67%
A or B grade
0%
D or F grade
2
Health violations
0
PFAS detected
Grade Distribution
How Hillsborough cities scored
A
1
33%
Excellent
B
1
33%
Good
C
1
33%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Illinois average
▼ 0.9 pts below state average
City Map
Water quality across Hillsborough
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Hillsborough
Best cities
Worst cities
County context
13
Superfund sites in Hillsborough
94.5%
of residents on fluoridated water (CDC, 2020)
18,203
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Hillsborough
Industrial polluters nearby
Facilities reporting the most surface-water releases in Hillsborough, 2023.
Total reported releases to surface water: 18,203 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
TAMPA ELECTRIC CO BIG BEND POWER STATION APOLLO BEACH, FL33572 | Ammonia | 17,972 |
UFP TAMPA LLC TAMPA, FL33612 | Copper And Copper Compounds | 101 |
MOSAIC FERTILIZER LLC-RIVERVIEW RIVERVIEW, FL33578 | Zinc compounds | 85 |
TAMPA STEEL ERECTING CO TAMPA, FL33619 | Aluminum oxide (fibrous forms) | 26 |
INTERNATIONAL SHIP REPAIR & MARINE SERVICES INC. TAMPA, FL33605 | Aluminum oxide (fibrous forms) | 16 |
+ 5 more facilities
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites
Superfund sites in Hillsborough
Superfund sites nearby
Federally tracked hazardous-waste sites within Hillsborough on the EPA National Priorities List.
- ALARIC AREA GW PLUME
- ARKLA TERRA PROPERTY
- HELENA CHEMICAL CO TAMPA PLANT
- JJ SEIFERT MACHINE
- MRI CORP TAMPA
+ 8 more sites
Source: EPA Superfund National Priorities List
Full Rankings