Tazewell County, Illinois
20 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-06-03
Tazewell County's water quality grade reflects a middle-ground assessment — its 20 ZIP codes range from fully compliant to violation-flagged.
How Tazewell County Compares
How Tazewell County Compares
Tazewell County scores 1 points below the Illinois state average (61/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Tazewell County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.1 (asthma 10.3%, diabetes 11.2%)
Estimated additional annual cost per homeowner: $1,124, driven primarily by flood
Infrastructure: 0.423% avg pipe failure probability, 60% of ZIPs at high risk
76.9% of homes built before 1978 (lead paint era)
Violation History (2022–2024)
→ Stable trendEPA violation counts by year across Tazewell County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 8 violations. Past 5 years: 12 total (12 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,124
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
57,448 housing units in Tazewell County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Tazewell County
Remediation costs are relatively manageable for most homeowners in Tazewell County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Tazewell County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Tazewell County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Il American-pekin | 31,731 | 56 |
| 2 | Pekin Fed Correctional Inst and Prsncmp | 1,635 | 42 |
| 3 | Uaw Senior Citizens Center | 240 | 42 |
| 4 | East Peoria | 22,284 | 41 |
| 5 | Morton | 17,111 | 30 |
33 total water systems serve Tazewell County.
All ZIP Codes in Tazewell County
20 ZIP codes tracked in Tazewell County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 61568 | Tremont | 70 | B | 0 | $243K |
| 2 | 61610 | Creve Coeur | 70 | B | 0 | $87K |
| 3 | 61747 | Hopedale | 68 | C | 2 | $195K |
| 4 | 61721 | Armington | 66 | C | 0 | $132K |
| 5 | 61733 | Deer Creek | 66 | C | 0 | $191K |
| 6 | 61535 | Groveland | 65 | C | 0 | $222K |
| 7 | 61564 | South Pekin | 65 | C | 4 | $113K |
| 8 | 61546 | Manito | 63 | C | 1 | $134K |
| 9 | 61635 | East Peoria | 63 | C | 11 (1 health) | — |
| 10 | 61759 | Minier | 62 | C | 0 | $150K |
| 11 | 61534 | Green Valley | 61 | C | 5 (1 health) | $153K |
| 12 | 61550 | Morton | 61 | C | 5 | $247K |
| 13 | 61555 | Pekin | 61 | C | 14 (1 health) | — |
| 14 | 61558 | Pekin | 61 | C | 14 (1 health) | — |
| 15 | 61571 | Washington | 60 | C | 11 (2 health) | $200K |
| 16 | 61755 | Mackinaw | 58 | C | 0 | $208K |
| 17 | 61554 | Pekin | 56 | C | 14 (1 health) | $124K |
| 18 | 61734 | Delavan | 44 | D | 3 | $140K |
| 19 | 61601 | Peoria | 37 | F | 8 (2 health) | — |
| 20 | 61605 | Peoria | 37 | F | 8 (2 health) | $44K ⚠ |
Recommended Buyer Guides for Tazewell County
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- Best Water Filters for Lead — Lead above EPA action level in 3 ZIP codes
- Best Lead Paint Test Kits — 76.9% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best Sump Pumps — Flood is the top compound risk factor
Deep Dive Reports
Detailed analysis for Tazewell County, Illinois
Overview
Tazewell County in Illinois covers 20 ZIP codes with an average Home Safety Score of C (60/100).
13 of 20 ZIP codes have recorded EPA violations. 11 health-based violations have been documented.
← Back to Illinois water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.