Thomastown, MS Water Safety: 73/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Residents of Thomastown generally live with tap water that beats the MS safety average on key EPA compliance metrics.
How Thomastown Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Thomastown Residents
- Estimated remediation: $1,200 per household.
- CDC health risk index: 16.26 — above typical levels.
Thomastown's Water Providers
Across most of Thomastown, MS, residential water comes from a single utility. That provider sets rates, manages infrastructure maintenance, and files compliance reports with the EPA on behalf of the households it serves. Federal tracking data shows 1 system on record, but one carries the bulk of the service load.
Overview
We track water quality and home safety data for 1 ZIP code in Thomastown, Mississippi, covering 1 community water system serving approximately 4,901 people.
No EPA violations recorded across any ZIP codes in Thomastown — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Thomastown: 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
Thomastown water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Thomastown
- 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 |
|---|---|---|---|
| 39171 | B | CITY OF CARTHAGE | 4,901 |
All ZIP Codes in Thomastown
- 39171 [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.
Thomastown 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
Thomastown: Flood History & Water Damage Risk
FEMA data shows 100% of Thomastown's ZIP codes mapped into designated flood zones, paired with an NFIP record of 4 claims. That footprint places local flood exposure in the range where it warrants attention without rising to high-severity planning territory.
Thomastown has a moderate flood history with 4 FEMA claims averaging $2,205 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 Thomastown, MS