Compared to statewide averages in SC, Fort Mill scores well - health violations are below the norm and systems generally operate within federal standards.

Data: EPA SDWIS

Overview

We track home safety data for 4 ZIP codes in Fort Mill, South Carolina, covering 8 community water systems serving approximately 122,010 people. The EPA snapshots used for this build directly map water systems to 3 of 4 ZIP codes.

2 of 3 ZIP codes with a reported violation count in the available EPA record (67%) have recorded EPA violations. 3 health-based violations appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for Fort Mill: B (77/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor	What It Measures
Water Quality	EPA violations and compliance history
PFAS MCL Screen	UCMR 5 testing against the covered federal MCLs
Radon Risk	EPA radon zone classification
Annual AQI	EPA AirData county-year median with at least 90 observed days

Water Sources

Fort Mill water systems draw from: Groundwater, Surface water.

Lead & Copper

• Average lead level (90th percentile): 0.0027 mg/L (EPA action level: 0.015 mg/L)
• 0 of 3 ZIP codes with known status exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 2 (Moderate Risk)

• Zone 1 (High): 0 ZIP codes
• Zone 2 (Moderate): 3 ZIP codes
• Zone 3 (Low): 1 ZIP code

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Top Contaminants

Areas with Most Violations

Areas with No Violations

All ZIP Codes in Fort Mill

• 29707
• 29708 [B] - 12 violations ⚠
• 29715 [B] - 13 violations ⚠
• 29716

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

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Housing Age Profile

Post-1986 construction is where the lower lead-solder risk lives, because that's when the federal ban on lead solder in plumbing took effect. In Fort Mill, where the median build year is 2003, the housing stock falls broadly on the newer side of that threshold - a distribution that moderates aggregate plumbing-era risk compared to older housing markets.

2003

Median Year Built

14%

Pre-1986 (Lead Paint Risk)

3%

Pre-1970 (Lead Pipes Risk)

Pre-1970 (3%) 1970–1986 (11%) Post-1986 (86%)

Most homes in Fort Mill 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 Fort Mill Homeowners

Because property values in Fort Mill comfortably exceed estimated remediation costs, the equity impact here is proportionally small.

Median Home Value

$439,400

Est. Remediation

$2,300

Remediation as % of home value 0.5%

Remediation costs in Fort Mill are relatively low compared to home values. The $1,200–$3,700 estimated range is a small fraction of median property value. Home values are 113% above the South Carolina average.

Lead Exposure Risk for Children in Fort Mill

14%

Homes Built Before 1986

0.0027

mg/L Avg Lead (Limit: 0.015)

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.

Confirming what flows from a specific faucet still requires a one-home draw, even where Fort Mill averages stay clean and the pre-rule housing share holds at 14%.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Historical NFIP Claim Context in Fort Mill

22

Total FEMA Flood Claims

$23,047

Avg Reported Sum With Payment Data

33%

A/V Share of Claim-Record ZIPs

Historical NFIP data for Fort Mill contains 22 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $23,047. Among ZIP codes with claim records, 33% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

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. The <strong>$2,300</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.