Clarks Hill, SC Water Safety: 73/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Within Clarks Hill, safety indicators for tap water remain above the SC median — documented violations are infrequent and the city's compliance record sits in the upper tier.
How Clarks Hill Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Clarks Hill Water
- Homes built before 1986: 26% — older plumbing may contain lead solder.
- Estimated remediation: $3,100 per household.
- CDC health risk index: 17.14 — above typical levels.
Who Supplies Your Water in Clarks Hill
While 1 water system appear in federal records for Clarks Hill, SC, one provider supplies the majority of residential connections — making it the central point of infrastructure and compliance accountability for most households.
Overview
We track water quality and home safety data for 1 ZIP code in Clarks Hill, South Carolina (population ~1,245), covering 1 community water system serving approximately 33,185 people region-wide.
No EPA violations recorded across any ZIP codes in Clarks Hill — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Clarks Hill: 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
Clarks Hill water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Clarks Hill
- 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 |
|---|---|---|---|
| 29821 | B | NORTH AUGUSTA CITY OF (SC0210003) | 33,185 |
All ZIP Codes in Clarks Hill
- 29821 [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.
Health Outcomes in Clarks Hill
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
Housing & Infrastructure in Clarks Hill
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
Copper plumbing joined with lead solder was standard practice through the mid-1980s — a design choice that federal regulators prohibited in 1986. Clarks Hill's residential inventory, centered around a median build year of 1995, is weighted toward the post-prohibition era. That context is relevant because the primary plumbing risk in older homes comes not from the municipal water supply but from what happens as water moves through lead-jointed pipes inside the structure — an exposure pathway that newer homes mostly avoid.
Most homes in Clarks Hill 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.
Cost Context: What Remediation Means for Clarks Hill Homeowners
The equity impact of remediation in Clarks Hill sits at a moderate level — real enough to plan for, within reach for most.
Remediation costs are moderate relative to home values in Clarks Hill. The estimated $2,200–$4,800 range is manageable for most homeowners but still worth budgeting for. Home values are 22% above the South Carolina average.
Lead Exposure Risk for Children in Clarks Hill
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.
26% of housing in Clarks Hill predates the federal action against lead solder — a contained share — and aggregate readings stay beneath the regulatory benchmark. Lead therefore sits in a quiet position on the local water-quality picture, with single-home draws as the standard tool for confirming any one address.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Clarks Hill
How does Clarks Hill's flood record connect to local water quality? The NFIP documents 1 claim — enough to signal recurring events — and 100% of ZIP codes carry FEMA flood zone status. That combination places flooding in the category of factors that can periodically affect water infrastructure, even if the area isn't among the highest-exposure communities in the NFIP dataset.
Clarks Hill has a moderate flood history with 1 FEMA claims averaging $76,125 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>$3,100</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 Clarks Hill, SC