Whiteside County, Illinois
13 ZIP codes · Avg score 54/100 · Grade D · Updated 2026-06-03
While Whiteside County's situation varies by ZIP, its 13 ZIP codes collectively fall below the state average — addressing specific concerns starts with checking the system that serves a given address.
How Whiteside County Compares
How Whiteside County Compares
Whiteside County scores 7 points below the Illinois state average (61/100) and 14 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Whiteside County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.8 (asthma 10.2%, diabetes 12.9%)
Estimated additional annual cost per homeowner: $1,635, driven primarily by flood
Infrastructure: 0.477% avg pipe failure probability, 85% of ZIPs at high risk
79% of homes built before 1978 (lead paint era)
Violation History (2023–2024)
→ Stable trendEPA violation counts by year across Whiteside County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 11 violations. Past 5 years: 13 total (13 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: $1,635
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
27,718 housing units in Whiteside 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 Whiteside County
Remediation costs are relatively manageable for most homeowners in Whiteside 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 Whiteside 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 Whiteside County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Albany | 846 | 32 |
| 2 | COUNTRY ACRES MHP (WHITESIDE COUNTY) | 232 | 10 |
| 3 | Rock Falls | 8,620 | 10 |
| 4 | Riverside Estates Mhp | 120 | 10 |
| 5 | PROPHETSTOWN | 2,100 | 10 |
13 total water systems serve Whiteside County.
All ZIP Codes in Whiteside County
13 ZIP codes tracked in Whiteside County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 62353 | Mount Sterling | 63 | C | 1 | $144K |
| 2 | 61250 | Erie | 61 | C | 7 (1 health) | $169K |
| 3 | 61277 | Prophetstown | 61 | C | 3 (1 health) | $134K |
| 4 | 61283 | Tampico | 61 | C | 3 (1 health) | $126K |
| 5 | 61071 | Rock Falls | 59 | C | 10 | $105K |
| 6 | 61270 | Morrison | 59 | C | 7 | $165K |
| 7 | 61081 | Sterling | 57 | C | 0 | $121K |
| 8 | 61230 | Albany | 56 | C | 22 (1 health) | $151K |
| 9 | 61252 | Fulton | 56 | C | 3 (1 health) | $143K |
| 10 | 61243 | Deer Grove | 53 | D | 0 | $220K |
| 11 | 61037 | Galt | 40 | D | 0 | $116K |
| 12 | 61251 | Fenton | 40 | D | 0 | $187K |
| 13 | 61258 | Hooppole | 40 | D | 0 | $75K |
Recommended Buyer Guides for Whiteside County
Retailer arrangements don't shape what appears here — the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Lead Paint Test Kits — 79% 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
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Whiteside County, Illinois
Overview
Whiteside County in Illinois covers 13 ZIP codes with an average Home Safety Score of D (54/100).
8 of 13 ZIP codes have recorded EPA violations. 5 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.
What You Can Do
Whiteside County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
79% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.