Irmo, SC: 2 Violations — 84/100 (2026)
1 ZIP code · 6 water systems · Updated 2026-06-03
Irmo's tap water quality puts it in SC's upper tier — health-based violations are rare and the compliance record is consistently above average.
How Irmo Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Irmo Residents
- Your city's water systems recorded 2 violations in the past 5 years.
- Average lead level: 0.0048 mg/L.
- Homes built before 1986: 30% — older plumbing may contain lead solder.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 12.16 — above typical levels.
Irmo's Water Providers
At present, 3 utilities serve the bulk of Irmo, SC's residential water connections out of 6 systems active in the area, spread across independent providers with separate infrastructure and compliance obligations.
Overview
We track water quality and home safety data for 1 ZIP code in Irmo, South Carolina (population ~38,475), covering 6 community water systems serving approximately 323,273 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Irmo: B (84/100)
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
Irmo water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0048 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 2 | 1 |
| Revised Total Coliform Rule | Microbiological | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 29063 | B | 2 | 0 | Bgwc Raintree Acres (sc4050015) |
All ZIP Codes in Irmo
- 29063 [B] — 2 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.
Irmo 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 Irmo's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Irmo Infrastructure Age
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Plumbing risk in residential housing tracks directly to construction era: pre-1986 homes may have lead-soldered copper joints; pre-1970 homes may have lead pipes outright. Irmo's median build year of 1994 places the city in a moderate risk zone where neither era dominates the housing inventory. Understanding which side of the 1986 threshold a specific property falls on — and whether it predates 1970 — is the most actionable starting point for a homeowner trying to assess their own tap water exposure.
Most homes in Irmo were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Irmo
Across Irmo, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Irmo are relatively low compared to home values. The $1,200–$2,600 estimated range is a small fraction of median property value. Home values are 16% above the South Carolina average.
Irmo: 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.
Whenever aggregate samples pass the federal action benchmark and pre-rule housing — 30% in Irmo — represents a smaller fraction, lead occupies a lower priority on the local picture.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Irmo: Flood History & Water Damage Risk
Within the NFIP's national dataset, Irmo falls in moderate-exposure territory — 79 documented incidents spanning multiple decades, with 100% of local ZIP codes sitting inside FEMA flood boundaries. That combination warrants inclusion in any thorough local water quality review.
Irmo has a moderate flood history with 79 FEMA claims averaging $8,616 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>$1,800</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 Irmo, SC