Wicomico County, Maryland
20 ZIP codes · Avg score 77/100 · Grade B · Updated 2026-06-04
Across all 20 ZIP codes in Wicomico County, tap water consistently meets or exceeds federal safety standards.
How Wicomico County Compares
How Wicomico County Compares
Wicomico County scores 16 points above the Maryland state average (61/100) and 9 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Wicomico County, Maryland
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.9 (asthma 10.8%, diabetes 12.5%)
Estimated additional annual cost per homeowner: $3,315, driven primarily by sea_level
Infrastructure: 0.357% avg pipe failure probability, 32% of ZIPs at high risk
56.8% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Wicomico County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 22 violations. Past 5 years: 31 total (31 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: $3,315
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
55,573 housing units in Wicomico 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 Wicomico County
Remediation costs are relatively manageable for most homeowners in Wicomico 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 Wicomico 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 Wicomico County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Salisbury | 30,343 | 16 |
| 2 | Steeplechase Waterworks | 395 | 12 |
| 3 | Cedarhurst Mobile Home Park | 220 | 12 |
| 4 | Walstons Mobile Home Park | 165 | 12 |
| 5 | Harbour Light Estates Community | 95 | 12 |
25 total water systems serve Wicomico County.
All ZIP Codes in Wicomico County
20 ZIP codes tracked in Wicomico County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 21850 | Pittsville | 98 | A | 3 | $224K |
| 2 | 21830 | Hebron | 95 | A | 0 | $245K |
| 3 | 21875 | Delmar | 95 | A | 0 | $227K |
| 4 | 21849 | Parsonsburg | 94 | A | 2 (1 health) | $234K |
| 5 | 21874 | Willards | 94 | A | 5 (1 health) | $220K |
| 6 | 21861 | Sharptown | 93 | A | 3 (2 health) | $187K |
| 7 | 21826 | Fruitland | 92 | A | 2 | $211K |
| 8 | 20841 | Boyds | 73 | B | 0 | $771K |
| 9 | 20872 | Damascus | 73 | B | 0 | $478K |
| 10 | 21161 | White Hall | 73 | B | 0 | $442K |
| 11 | 21659 | Rhodesdale | 73 | B | 0 | $202K |
| 12 | 21837 | Mardela Springs | 73 | B | 0 | $206K |
| 13 | 20838 | Barnesville | 66 | C | 0 | $807K |
| 14 | 21105 | Maryland Line | 66 | C | 0 | — |
| 15 | 21852 | Powellville | 66 | C | 0 | — |
| 16 | 21120 | Parkton | 65 | C | 0 | $552K |
| 17 | 21802 | Salisbury | 65 | C | 4 (1 health) | — |
| 18 | 21856 | Quantico | 65 | C | 0 | $243K |
| 19 | 21801 | Salisbury | 59 | C | 4 (1 health) | $287K |
| 20 | 21804 | Salisbury | 59 | C | 4 (1 health) | $230K |
Recommended Buyer Guides for Wicomico County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- Best Water Filters for Lead — Lead above EPA action level in 3 ZIP codes
- Best Lead Paint Test Kits — 56.8% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Wicomico County, Maryland
Overview
Wicomico County in Maryland covers 20 ZIP codes with an average Home Safety Score of B (77/100).
8 of 20 ZIP codes have recorded EPA violations. 7 health-based violations have been documented.
← Back to Maryland 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.