Berkeley County, West Virginia
42 ZIP codes · Avg score 50/100 · Grade D · Updated 2026-06-03
While Berkeley County's situation varies by ZIP, its 42 ZIP codes collectively fall below the state average — addressing specific concerns starts with checking the system that serves a given address.
How Berkeley County Compares
How Berkeley County Compares
Berkeley County scores 14 points below the West Virginia state average (64/100) and 18 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Berkeley County, West Virginia
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 16 (asthma 12.1%, diabetes 15.2%)
Estimated additional annual cost per homeowner: $1,657, driven primarily by flood
Infrastructure: 0.501% avg pipe failure probability, 73% of ZIPs at high risk
62.5% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Berkeley County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 4 violations. Past 5 years: 10 total (10 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: $1,657
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
72,234 housing units in Berkeley 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 Berkeley County
Water safety remediation is a moderate expense relative to home values. Most homeowners can address issues through staged improvements over time.
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 Berkeley 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 Berkeley County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Berkeley County Pswd-potomac River | 34,786 | 325 |
| 2 | Berkeley Company P S W D-bunker Hill | 34,586 | 320 |
| 3 | Woods Home Owners Association 2 | 3,300 | 317 |
| 4 | City of Martinsburg | 16,250 | 288 |
| 5 | Va Medical Center | 2,175 | 285 |
12 total water systems serve Berkeley County.
All ZIP Codes in Berkeley County
42 ZIP codes tracked in Berkeley County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 25402 | Martinsburg | 66 | C | 57 (1 health) | — |
| 2 | 25403 | Martinsburg | 66 | C | 57 (1 health) | $302K |
| 3 | 25405 | Martinsburg | 66 | C | 57 (1 health) | $255K |
| 4 | 25428 | Inwood | 65 | C | 3 (2 health) | $234K |
| 5 | 25404 | Martinsburg | 61 | C | 57 (1 health) | $227K |
| 6 | 25420 | Gerrardstown | 59 | C | 5 | $275K |
| 7 | 25401 | Martinsburg | 56 | C | 57 (1 health) | $222K |
| 8 | 25011 | Bancroft | 53 | D | 0 | $114K |
| 9 | 25025 | Blount | 53 | D | 0 | — |
| 10 | 25035 | Cabin Creek | 53 | D | 0 | $71K |
| 11 | 25039 | Cedar Grove | 53 | D | 0 | $68K |
| 12 | 25054 | Dawes | 53 | D | 0 | — |
| 13 | 25061 | Drybranch | 53 | D | 0 | $82K |
| 14 | 25086 | Glasgow | 53 | D | 0 | $98K |
| 15 | 25103 | Hansford | 53 | D | 0 | $82K |
| 16 | 25107 | Hernshaw | 53 | D | 0 | $68K |
| 17 | 25110 | Hugheston | 53 | D | 0 | — |
| 18 | 25112 | Institute | 53 | D | 0 | — |
| 19 | 25132 | Mammoth | 53 | D | 0 | $38K |
| 20 | 25134 | Miami | 53 | D | 0 | — |
| 21 | 25148 | Orgas | 53 | D | 0 | $82K |
| 22 | 25154 | Peytona | 53 | D | 0 | $101K |
| 23 | 25165 | Racine | 53 | D | 0 | $109K |
| 24 | 25201 | Tad | 53 | D | 0 | — |
| 25 | 25413 | Bunker Hill | 53 | D | 0 | $249K |
| 26 | 25427 | Hedgesville | 51 | D | 32 (3 health) | $258K |
| 27 | 25024 | Bloomingrose | 45 | D | 0 | $64K |
| 28 | 25051 | Costa | 45 | D | 0 | $82K |
| 29 | 25159 | Poca | 45 | D | 0 | $155K |
| 30 | 25162 | Pratt | 45 | D | 0 | $129K |
| 31 | 25181 | Seth | 45 | D | 0 | $87K |
| 32 | 25214 | Winifrede | 45 | D | 0 | — |
| 33 | 25015 | Belle | 40 | D | 0 | $107K |
| 34 | 25049 | Comfort | 40 | D | 0 | $82K |
| 35 | 25064 | Dunbar | 40 | D | 0 | $118K |
| 36 | 25067 | East Bank | 40 | D | 0 | $88K |
| 37 | 25156 | Pinch | 40 | D | 0 | — |
| 38 | 25419 | Falling Waters | 40 | D | 0 | $251K |
| 39 | 25421 | Glengary | 40 | D | 0 | — |
| 40 | 25440 | Ridgeway | 40 | D | 0 | — |
| 41 | 25446 | Summit Point | 40 | D | 0 | $365K |
| 42 | 25071 | Elkview | 35 | F | 0 | $159K |
Recommended Buyer Guides for Berkeley County
While many sites publish identical guide lists across every county they cover, the selection here changes by location — driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Lead Paint Test Kits — 62.5% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- 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 Berkeley County, West Virginia
Overview
Berkeley County in West Virginia covers 42 ZIP codes with an average Home Safety Score of D (50/100).
8 of 42 ZIP codes have recorded EPA violations. 10 health-based violations have been documented.
← Back to West Virginia 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.
What You Can Do
Berkeley County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
62.5% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.