Sangamon County, Illinois
57 ZIP codes · Avg score 63/100 · Grade C · Updated
ZipCheckup grade for Sangamon County: C.
A mixed picture - some signals here are worth your attention.
Across Sangamon County's 57 ZIP codes, water safety results are uneven - a portion of systems carry active or recent violations, while others meet standards without issues.
How Sangamon County Compares
How Sangamon County Compares
Sangamon County scores 5 points below the Illinois state average (68/100) and 10 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Sangamon County, Illinois
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.5 (asthma 10.5%, diabetes 11.9%)
Estimated additional annual cost per homeowner: $770, driven primarily by flood
Violation History (2021–2024)
↑ Worsening trendEPA violation counts by year across Sangamon County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 6 violations. Past 5 years: 13 total (13 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.
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
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $770
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Sangamon County
Remediation costs are relatively manageable for most homeowners in Sangamon 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 Sangamon County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Sangamon County
8 community water systems serving Sangamon County.
- D
- C
- C
- C
- C
- C
20 total water systems serve Sangamon County.
Systems with the most violations in Sangamon County
5 water systems with recorded EPA violations.
- D
- C
- C
- D
- C
All ZIP Codes in Sangamon County
57 ZIP codes tracked in Sangamon County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 62536 | Glenarm | 67 | C | 0 | $246K |
| 2 | 62661 | Loami | 67 | C | 0 | $161K |
| 3 | 62625 | Cantrall | 66 | C | 2 | $278K |
| 4 | 62629 | Chatham | 66 | C | 3 | $232K |
| 5 | 62670 | New Berlin | 66 | C | 3 | $188K |
| 6 | 62677 | Pleasant Plains | 66 | C | 3 | $211K |
| 7 | 62693 | Williamsville | 66 | C | 2 | $194K |
| 8 | 62701 | Springfield | 66 | C | 3 | — |
| 9 | 62561 | Riverton | 65 | C | 5 | $156K |
| 10 | 62615 | Auburn | 65 | C | 5 | $154K |
| 11 | 62684 | Sherman | 65 | C | 5 | $292K |
| 12 | 62703 | Springfield | 65 | C | 5 | $93K |
| 13 | 62704 | Springfield | 62 | C | 15 | $167K |
| 14 | 62711 | Springfield | 62 | C | 15 | $299K |
| 15 | 62707 | Springfield | 58 | C | 20 (1 health) | $164K |
| 16 | 62563 | Rochester | 53 | D | 72 | $256K |
| 17 | 62712 | Springfield | 50 | D | 80 (4 health) | $244K |
| 18 | 62515 | Buffalo | — | — | $154K | |
| 19 | 62520 | Dawson | — | — | 4 | $225K |
| 20 | 62530 | Divernon | — | — | 4 | $145K |
| 21 | 62539 | Illiopolis | — | — | 1 | $108K |
| 22 | 62545 | Mechanicsburg | — | — | $160K | |
| 23 | 62558 | Pawnee | — | — | 4 | $176K |
| 24 | 62662 | Lowder | — | — | — | |
| 25 | 62689 | Thayer | — | — | $86K | |
| 26 | 62702 | Springfield | — | — | 25 (1 health) | $102K |
| 27 | 62705 | Springfield | — | — | — | |
| 28 | 62706 | Springfield | — | — | 3 | — |
| 29 | 62708 | Springfield | — | — | — | |
| 30 | 62713 | Springfield | — | — | — | |
| 31 | 62715 | Springfield | — | — | — | |
| 32 | 62716 | Springfield | — | — | — | |
| 33 | 62719 | Springfield | — | — | — | |
| 34 | 62721 | Springfield | — | — | — | |
| 35 | 62722 | Springfield | — | — | — | |
| 36 | 62723 | Springfield | — | — | — | |
| 37 | 62726 | Springfield | — | — | — | |
| 38 | 62736 | Springfield | — | — | — | |
| 39 | 62739 | Springfield | — | — | — | |
| 40 | 62746 | Springfield | — | — | — | |
| 41 | 62756 | Springfield | — | — | — | |
| 42 | 62757 | Springfield | — | — | — | |
| 43 | 62761 | Springfield | — | — | — | |
| 44 | 62762 | Springfield | — | — | — | |
| 45 | 62763 | Springfield | — | — | — | |
| 46 | 62764 | Springfield | — | — | — | |
| 47 | 62765 | Springfield | — | — | — | |
| 48 | 62766 | Springfield | — | — | — | |
| 49 | 62767 | Springfield | — | — | — | |
| 50 | 62769 | Springfield | — | — | — | |
| 51 | 62776 | Springfield | — | — | — | |
| 52 | 62777 | Springfield | — | — | — | |
| 53 | 62781 | Springfield | — | — | — | |
| 54 | 62786 | Springfield | — | — | — | |
| 55 | 62791 | Springfield | — | — | — | |
| 56 | 62794 | Springfield | — | — | — | |
| 57 | 62796 | Springfield | — | — | — |
Recommended Buyer Guides for Sangamon County
Four sources - EPA, NSF, FEMA, CDC - drive the match.
- 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 Sangamon County, Illinois
Overview
Sangamon County in Illinois covers 57 tracked ZIP records with an average Home Safety Score of C (63/100) across 17 scored records.
21 of 23 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 5 health-based violations appear in the available health breakdown.
← Back to Illinois Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.