Jefferson County, Pennsylvania
22 ZIP codes · Avg score 58/100 · Grade C · Updated 2026-06-03
Water monitoring across Jefferson County's 22 ZIP codes paints a mid-range picture — solid compliance in some zones, documented concerns in others; most violations on record are concentrated in specific prior years rather than spread evenly across the full compliance history, and the overall county grade has held steady in the middle tier without major shifts in either direction.
How Jefferson County Compares
How Jefferson County Compares
Jefferson County scores 3 points above the Pennsylvania state average (55/100) and 10 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Jefferson County, Pennsylvania
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Estimated additional annual cost per homeowner: $1,878, driven primarily by flood
Infrastructure: 0.501% avg pipe failure probability, 95% of ZIPs at high risk
81.7% of homes built before 1978 (lead paint era)
Violation History (2021–2023)
→ Stable trendEPA violation counts by year across Jefferson County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 6 violations. Past 5 years: 11 total (11 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
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: $1,878
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
32,924 housing units in Jefferson 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 Jefferson County
Remediation costs are relatively manageable for most homeowners in Jefferson 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.
Water Systems with Most Violations
Top 5 systems in Jefferson County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Brockway Boro Municipal Authority | 4,384 | 46 |
| 2 | Sykesville Borough | 1,500 | 31 |
| 3 | SUMMERVILLE BORO MUN AUTH | 700 | 24 |
| 4 | HENDERSON TOWNSHIP MUN AUTH | 354 | 23 |
| 5 | KNOX TOWNSHIP MUNIC AUTHORITY | 300 | 21 |
15 total water systems serve Jefferson County.
All ZIP Codes in Jefferson County
22 ZIP codes tracked in Jefferson County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 15825 | Brookville | 76 | B | 5 | $150K |
| 2 | 15865 | Sykesville | 74 | B | 12 (1 health) | $89K |
| 3 | 15863 | Stump Creek | 73 | B | 23 (2 health) | $75K |
| 4 | 15824 | Brockway | 64 | C | 41 | $147K |
| 5 | 15851 | Reynoldsville | 64 | C | 19 (1 health) | $113K |
| 6 | 15828 | Clarington | 63 | C | 0 | $108K |
| 7 | 15829 | Corsica | 63 | C | 0 | $126K |
| 8 | 16217 | Cooksburg | 63 | C | 0 | $235K |
| 9 | 15847 | Knox Dale | 57 | C | 21 | $72K |
| 10 | 15864 | Summerville | 56 | C | 24 | $145K |
| 11 | 15715 | Big Run | 55 | C | 0 | $102K |
| 12 | 15711 | Anita | 53 | D | 0 | $104K |
| 13 | 15730 | Coolspring | 53 | D | 0 | $142K |
| 14 | 15733 | De Lancey | 53 | D | 0 | $222K |
| 15 | 15764 | Oliveburg | 53 | D | 0 | $141K |
| 16 | 15776 | Sprankle Mills | 53 | D | 0 | — |
| 17 | 15781 | Walston | 53 | D | 0 | — |
| 18 | 15784 | Worthville | 53 | D | 0 | $151K |
| 19 | 15866 | Troutville | 53 | D | 0 | $107K |
| 20 | 16239 | Marienville | 53 | D | 0 | $110K |
| 21 | 15767 | Punxsutawney | 50 | D | 0 | $126K |
| 22 | 15801 | Du Bois | 45 | D | 0 | $170K |
Recommended Buyer Guides for Jefferson County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 81.7% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- 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 Jefferson County, Pennsylvania
Overview
Jefferson County in Pennsylvania covers 22 ZIP codes with an average Home Safety Score of C (58/100).
7 of 22 ZIP codes have recorded EPA violations. 4 health-based violations have been documented.
← Back to Pennsylvania 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.