Harrisburg, IL: 2 Health Violations — 73/100 (2026)
1 ZIP code · 6 water systems · Updated 2026-06-03
Across Harrisburg, EPA monitoring data shows low violation rates and healthy safety margins — a pattern that places the city well above IL's average for drinking water compliance across recent reporting cycles.
How Harrisburg Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Harrisburg Residents
- Your city's water systems recorded 10 violations in the past 5 years.
- Average lead level: 0.0034 mg/L.
- Homes built before 1986: 70% — older plumbing may contain lead solder.
- Estimated remediation: $3,000 per household.
- CDC health risk index: 15.01 — above typical levels.
Harrisburg's Water Providers
Residential water service in Harrisburg, IL is divided among 3 separate utilities, drawn from 6 systems on file with federal regulators.
Overview
We track water quality and home safety data for 1 ZIP code in Harrisburg, Illinois, covering 6 community water systems serving approximately 11,465 people.
1 of 1 ZIP code (100%) have recorded EPA violations. 2 health-based violations documented.
Home Safety Score
Average Home Safety Score for Harrisburg: B (73/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Harrisburg water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0034 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 6 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 4 | 1 |
| Barium | Inorganic | 2 | 1 |
| Stage 1 DBP Rule | Treatment Technique | 2 | 1 |
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 62946 | B | 10 | 2 | Harrisburg |
All ZIP Codes in Harrisburg
- 62946 [B] — 10 violations ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Harrisburg Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Harrisburg's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Harrisburg Infrastructure Age
With 70% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Federal plumbing rules changed in two stages — lead pipes were phased out before 1970, and lead solder was banned in 1986 — but in Harrisburg, where the median build year is 1960, most of the housing was already in place before those rules took effect. The materials installed under older standards remain embedded in a substantial portion of the residential inventory today.
Over half of homes in Harrisburg were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Harrisburg
What should Harrisburg property owners understand before approaching remediation at this cost-to-value tier? That the equity share is elevated enough to treat this as a formal financial decision — one where knowing the full scope and prioritizing documented issues by urgency shape the outcome more than any single variable, given where this market falls on the remediation-share scale.
At 3.1% of home value, remediation costs in Harrisburg represent a significant financial burden. For homes valued near the median, fixing water and safety issues could cost $1,650–$4,700. Home values here are 47% below the Illinois average.
Harrisburg: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Reading the local data together points toward a structural gap that matters more here than in low-exposure communities. 70% of Harrisburg stock comes from the pre-rule era, and citywide monitoring either approaches or sits beyond the federal benchmark under Lead and Copper Rule sampling. A baseline kit fits the routine-diligence category, with certified filtration available via retailer networks where confirmed faucet results warrant additional measures.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Harrisburg: Flood History & Water Damage Risk
Although Harrisburg's flood history doesn't reach high-severity thresholds, NFIP data documents 16 claims and FEMA maps place 100% of ZIP codes in designated flood zones — a combined profile that makes flood-related water quality considerations a reasonable planning baseline.
Harrisburg has a moderate flood history with 16 FEMA claims averaging $21,553 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$3,000</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Harrisburg, IL