Florence, SC Water Safety: 91/100 (2026)
6 ZIP codes · 3 water systems · Updated 2026-06-04
Within Florence, 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 Florence Compares
Data: EPA SDWIS Last verified: 2026-06-04
Water Quality Map: Florence, SC
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
How ZIP codes in Florence score across all safety grades.
What You Should Know About Florence Water
- Average lead level: 0.0011 mg/L.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 14.6 — above typical levels.
Who Supplies Your Water in Florence
Residential addresses in Florence, SC are served by 3 primary water providers out of 3 systems in federal records. Each system maintains separate infrastructure and files its own EPA compliance reports, so service conditions are not uniform across the city.
Overview
We track water quality and home safety data for 6 ZIP codes in Florence, South Carolina, covering 3 community water systems serving approximately 91,535 people.
No EPA violations recorded across any ZIP codes in Florence — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Florence: A (91/100)
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
Florence water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0011 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)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 6 ZIP codes
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 29501 | A | Florence City of (sc2110001) | 79,745 |
| 29502 | A | Florence City of (sc2110001) | 79,745 |
| 29503 | A | Florence City of (sc2110001) | 79,745 |
| 29504 | A | Florence City of (sc2110001) | 79,745 |
| 29505 | A | Florence City of (sc2110001) | 79,745 |
| 29506 | A | Florence City of (sc2110001) | 79,745 |
All ZIP Codes in Florence
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 Florence
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
Cost Context: What Remediation Means for Florence Homeowners
At current valuations, Florence falls in the moderate remediation-share tier — a level where treating this as a budgeted line item rather than an ad-hoc expense is the practical approach.
Remediation costs are moderate relative to home values in Florence. The estimated $1,200–$2,560 range is manageable for most homeowners but still worth budgeting for. Home values are 16% below the South Carolina average.
Lead Exposure Risk for Children in Florence
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.
Lead risk in Florence appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Florence
Multiple flood events have been recorded for Florence through the NFIP — 290 claims in total, with 83% of ZIP codes in FEMA-designated zones — pointing to a flood exposure profile that merits inclusion in a water quality assessment without reaching high-severity planning territory.
Florence has a moderate flood history with 290 FEMA claims averaging $13,271 per payout. 83% 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 Florence, SC