Warrenville, SC Water Safety: 73/100 (2026)
1 ZIP code · 8 water systems · Updated 2026-06-03
Although water quality varies across any metro, Warrenville's systems collectively post above-average compliance scores for SC — and documented violations are few.
How Warrenville Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Warrenville Residents
- Homes built before 1986: 51% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 13.54 — above typical levels.
Warrenville's Water Providers
3 independent water providers serve Warrenville, SC — 8 systems appear in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Warrenville, South Carolina (population ~9,081), covering 8 community water systems serving approximately 86,560 people region-wide.
No EPA violations recorded across any ZIP codes in Warrenville — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Warrenville: 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
Warrenville water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Warrenville
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 29851 | B | VALLEY PSA (SC0220012) | 7,752 |
All ZIP Codes in Warrenville
- 29851 [B]
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.
Warrenville 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
Warrenville Infrastructure Age
With 51% 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
When a city's housing median build year is 1984, as in Warrenville, the implication for water quality research is straightforward: municipal-level data captures what leaves the treatment plant, but household plumbing from before 1986 determines what actually arrives at the tap. In cities where older housing predominates, that gap between system-level and household-level data is widest.
Over half of homes in Warrenville 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 Warrenville
In Warrenville, property wealth outpaces what documented remediation typically demands — the equity burden lands well within the low tier.
Remediation costs in Warrenville are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 26% below the South Carolina average.
Warrenville: 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.
Older stock in Warrenville represents 51% of the inventory, and citywide monitoring runs at or above the federal action level — making an in-home read a standard household-level step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Warrenville: Flood History & Water Damage Risk
Within the NFIP's national dataset, Warrenville falls in moderate-exposure territory — 2 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.
Warrenville has a moderate flood history with 2 FEMA claims averaging $6,217 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>$1,200</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 Warrenville, SC