Polk County, Florida
53 ZIP codes · Avg score 69/100 · Grade C · Updated 2026-06-03
Based on current EPA data, Polk County's 53 ZIP codes reflect fair but mixed water safety.
How Polk County Compares
How Polk County Compares
Polk County scores 4 points below the Florida state average (73/100) and 1 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Polk County, Florida
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14 (asthma 10%, diabetes 13.6%)
Estimated additional annual cost per homeowner: $5,014, driven primarily by sea_level
Infrastructure: 0.28% avg pipe failure probability, 6% of ZIPs at high risk
49.2% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Polk County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 42 violations. Past 5 years: 117 total (117 health-based). Health-based violations are rising versus the prior 2-year window — worth closer monitoring.
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: $5,014
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
325,917 housing units in Polk 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 Polk County
Remediation costs are relatively manageable for most homeowners in Polk 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 Polk 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 Polk County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Southwest/polk County Utility | 39,209 | 1905 |
| 2 | Northwest | 28,082 | 1850 |
| 3 | Winter Haven Water Department | 87,537 | 1523 |
| 4 | Northeast | 60,557 | 1417 |
| 5 | Central | 13,595 | 1216 |
80 total water systems serve Polk County.
All ZIP Codes in Polk County
53 ZIP codes tracked in Polk County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 33836 | Davenport | 82 | B | 37 (1 health) | — |
| 2 | 33896 | Davenport | 82 | B | 37 (1 health) | $307K |
| 3 | 33897 | Davenport | 82 | B | 37 (1 health) | $279K |
| 4 | 33827 | Babson Park | 79 | B | 18 (1 health) | $213K |
| 5 | 33831 | Bartow | 79 | B | 32 (1 health) | — |
| 6 | 33840 | Eaton Park | 79 | B | 13 (1 health) | — |
| 7 | 33845 | Haines City | 78 | B | 64 (1 health) | — |
| 8 | 33846 | Highland City | 78 | B | 13 (1 health) | — |
| 9 | 33867 | River Ranch | 78 | B | 8 (1 health) | — |
| 10 | 33837 | Davenport | 77 | B | 37 (1 health) | $298K |
| 11 | 33835 | Bradley | 76 | B | 6 | — |
| 12 | 33855 | Indian Lake Estates | 76 | B | 8 | — |
| 13 | 33883 | Winter Haven | 76 | B | 167 (2 health) | — |
| 14 | 33830 | Bartow | 74 | B | 32 (1 health) | $208K |
| 15 | 33882 | Winter Haven | 74 | B | 167 (2 health) | — |
| 16 | 33885 | Winter Haven | 74 | B | 167 (2 health) | — |
| 17 | 33888 | Winter Haven | 74 | B | 167 (2 health) | — |
| 18 | 33838 | Dundee | 71 | B | 39 (3 health) | $230K |
| 19 | 33851 | Lake Hamilton | 71 | B | 12 | $175K |
| 20 | 33881 | Winter Haven | 71 | B | 167 (2 health) | $177K |
| 21 | 33841 | Fort Meade | 70 | B | 37 (2 health) | $139K |
| 22 | 33853 | Lake Wales | 70 | B | 87 (2 health) | $198K |
| 23 | 33859 | Lake Wales | 70 | B | 87 (2 health) | $200K |
| 24 | 33804 | Lakeland | 69 | C | 56 | — |
| 25 | 33823 | Auburndale | 69 | C | 56 (1 health) | $234K |
| 26 | 33839 | Eagle Lake | 69 | C | 15 | $235K |
| 27 | 33844 | Haines City | 69 | C | 64 (1 health) | $213K |
| 28 | 33849 | Kathleen | 69 | C | 9 | $281K |
| 29 | 33850 | Lake Alfred | 69 | C | 24 | $216K |
| 30 | 33820 | Alturas | 66 | C | 9 | — |
| 31 | 33880 | Winter Haven | 66 | C | 167 (2 health) | $201K |
| 32 | 33884 | Winter Haven | 66 | C | 167 (2 health) | $269K |
| 33 | 33806 | Lakeland | 65 | C | 56 | — |
| 34 | 33807 | Lakeland | 65 | C | 56 | — |
| 35 | 33854 | Lakeshore | 65 | C | 22 | $81K |
| 36 | 33856 | Nalcrest | 65 | C | 22 | — |
| 37 | 33860 | Mulberry | 65 | C | 32 (4 health) | $221K |
| 38 | 33898 | Lake Wales | 65 | C | 87 (2 health) | $162K |
| 39 | 33803 | Lakeland | 64 | C | 56 | $236K |
| 40 | 33805 | Lakeland | 64 | C | 56 | $174K |
| 41 | 33812 | Lakeland | 64 | C | 56 | $335K |
| 42 | 33868 | Polk City | 64 | C | 36 | $236K |
| 43 | 33877 | Waverly | 63 | C | 0 | $189K |
| 44 | 33843 | Frostproof | 62 | C | 42 (7 health) | $108K |
| 45 | 33801 | Lakeland | 59 | C | 56 | $139K |
| 46 | 33809 | Lakeland | 59 | C | 56 | $249K |
| 47 | 33811 | Lakeland | 59 | C | 56 | $290K |
| 48 | 33813 | Lakeland | 59 | C | 56 | $330K |
| 49 | 33815 | Lakeland | 59 | C | 56 | $43K |
| 50 | 33810 | Lakeland | 54 | D | 56 | $245K |
| 51 | 34759 | Kissimmee | 54 | D | 16 | $271K |
| 52 | 33847 | Homeland | 53 | D | 0 | — |
| 53 | 33863 | Nichols | 53 | D | 0 | — |
Recommended Buyer Guides for Polk County
Four sources — EPA, NSF, FEMA, CDC — drive the match.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Polk County, Florida
Overview
Polk County in Florida covers 53 ZIP codes with an average Home Safety Score of C (69/100).
50 of 53 ZIP codes have recorded EPA violations. 49 health-based violations have been documented.
← Back to Florida 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.