Hamilton County, Tennessee
35 ZIP codes · Avg score 69/100 · Grade C · Updated 2026-06-03
Water safety in Hamilton County is uneven — some of its 35 ZIP codes meet standards cleanly while others carry documented violations.
How Hamilton County Compares
How Hamilton County Compares
Hamilton County scores 0 points above the Tennessee state average (69/100) and 1 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Hamilton County, Tennessee
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.7 (asthma 11%, diabetes 12.9%)
Estimated additional annual cost per homeowner: $1,257, driven primarily by flood
Infrastructure: 0.289% avg pipe failure probability, 15% of ZIPs at high risk
60.5% of homes built before 1978 (lead paint era)
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across Hamilton County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 7 violations. Past 5 years: 8 total (8 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,257
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
166,731 housing units in Hamilton County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Hamilton County
Remediation costs are relatively manageable for most homeowners in Hamilton County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Hamilton County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Hamilton County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | TENNESSEE AMERICAN WATER | 211,499 | 63 |
| 2 | Eastside Utility District | 57,939 | 60 |
| 3 | Tn American - Sequatchie Valley | 7,842 | 60 |
| 4 | Jasper Highlands Water System | 1,280 | 60 |
| 5 | Suck Creek Water System | 606 | 60 |
16 total water systems serve Hamilton County.
All ZIP Codes in Hamilton County
35 ZIP codes tracked in Hamilton County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 37304 | Bakewell | 81 | B | 1 | — |
| 2 | 37377 | Signal Mountain | 80 | B | 3 | $484K |
| 3 | 37401 | Chattanooga | 79 | B | 3 | — |
| 4 | 37402 | Chattanooga | 79 | B | 3 | $460K |
| 5 | 37409 | Chattanooga | 79 | B | 3 | $246K |
| 6 | 37414 | Chattanooga | 79 | B | 3 | — |
| 7 | 37422 | Chattanooga | 79 | B | 3 | — |
| 8 | 37424 | Chattanooga | 79 | B | 3 | — |
| 9 | 37450 | Chattanooga | 79 | B | 3 | — |
| 10 | 37384 | Soddy Daisy | 78 | B | 2 (1 health) | — |
| 11 | 37403 | Chattanooga | 74 | B | 3 | $444K |
| 12 | 37406 | Chattanooga | 74 | B | 3 | $150K |
| 13 | 37407 | Chattanooga | 74 | B | 3 | $85K |
| 14 | 37408 | Chattanooga | 74 | B | 3 | $460K |
| 15 | 37410 | Chattanooga | 74 | B | 3 | $134K |
| 16 | 37416 | Chattanooga | 74 | B | 3 | $230K |
| 17 | 37343 | Hixson | 73 | B | 0 | $275K |
| 18 | 37379 | Soddy Daisy | 69 | C | 2 (1 health) | $278K |
| 19 | 37404 | Chattanooga | 69 | C | 3 | $235K |
| 20 | 37405 | Chattanooga | 69 | C | 3 | $417K |
| 21 | 37411 | Chattanooga | 69 | C | 3 | $217K |
| 22 | 37415 | Chattanooga | 69 | C | 3 | $262K |
| 23 | 37419 | Chattanooga | 69 | C | 3 | $303K |
| 24 | 37412 | Chattanooga | 64 | C | 3 | $183K |
| 25 | 37421 | Chattanooga | 64 | C | 3 | $300K |
| 26 | 37302 | Apison | 63 | C | 0 | $372K |
| 27 | 37315 | Collegedale | 63 | C | 0 | — |
| 28 | 37341 | Harrison | 63 | C | 0 | $264K |
| 29 | 37363 | Ooltewah | 63 | C | 0 | $350K |
| 30 | 37373 | Sale Creek | 63 | C | 0 | $296K |
| 31 | 37308 | Birchwood | 53 | D | 0 | $238K |
| 32 | 37350 | Lookout Mountain | 53 | D | 0 | $762K |
| 33 | 37351 | Lupton City | 53 | D | 0 | $170K |
| 34 | 37362 | Old Fort | 53 | D | 0 | $117K |
| 35 | 37396 | Whiteside | 53 | D | 0 | — |
Recommended Buyer Guides for Hamilton County
Below: editorial picks, no sponsored placements.
- Best Lead Paint Test Kits — 60.5% of homes built before 1978
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Hamilton County, Tennessee
Overview
Hamilton County in Tennessee covers 35 ZIP codes with an average Home Safety Score of C (69/100).
24 of 35 ZIP codes have recorded EPA violations. 2 health-based violations have been documented.
← Back to Tennessee water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.