Warren County, Pennsylvania
18 ZIP codes · Avg score 67/100 · Grade C · Updated 2026-06-03
The systems supplying Warren County's 18 ZIP codes vary in performance — most meet minimum standards, but violations in select areas are on record.
How Warren County Compares
How Warren County Compares
Warren County scores 12 points above the Pennsylvania state average (55/100) and 1 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Warren 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: $1,506, driven primarily by sea_level
Infrastructure: 0.449% avg pipe failure probability, 76% of ZIPs at high risk
79.2% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Warren County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 3 violations. Past 5 years: 5 total (5 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: $1,506
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
20,813 housing units in Warren 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 Warren County
Remediation costs are relatively manageable for most homeowners in Warren 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 Warren County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | PA AMERICAN WATER CO WARREN | 14,650 | 45 |
| 2 | North Warren Muni Authority | 1,749 | 45 |
| 3 | Valley View Village Mhp | 55 | 45 |
| 4 | The Valley Mhc | 37 | 45 |
| 5 | Southwest Warren Company Mun Authority | 1,040 | 14 |
10 total water systems serve Warren County.
All ZIP Codes in Warren County
18 ZIP codes tracked in Warren County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 16366 | Warren | 79 | B | 9 | — |
| 2 | 16367 | Warren | 79 | B | 9 | — |
| 3 | 16368 | Warren | 79 | B | 9 | — |
| 4 | 16369 | Warren | 79 | B | 9 | — |
| 5 | 16365 | Warren | 74 | B | 9 | $118K |
| 6 | 16347 | Sheffield | 72 | B | 6 | $78K |
| 7 | 16436 | Spring Creek | 72 | B | 7 | $156K |
| 8 | 16371 | Youngsville | 68 | C | 5 | $108K |
| 9 | 16345 | Russell | 67 | C | 7 | $184K |
| 10 | 16351 | Tidioute | 66 | C | 14 (6 health) | $93K |
| 11 | 16313 | Clarendon | 63 | C | 0 | $100K |
| 12 | 16329 | Irvine | 63 | C | 0 | $94K |
| 13 | 16340 | Pittsfield | 63 | C | 0 | $121K |
| 14 | 16350 | Sugar Grove | 63 | C | 0 | $179K |
| 15 | 16352 | Tiona | 63 | C | 0 | $96K |
| 16 | 16312 | Chandlers Valley | 53 | D | 0 | — |
| 17 | 16402 | Bear Lake | 53 | D | 0 | $86K |
| 18 | 16416 | Garland | 53 | D | 0 | $324K |
Recommended Buyer Guides for Warren County
Four sources — EPA, NSF, FEMA, CDC — drive the match.
- Best Lead Paint Test Kits — 79.2% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Warren County, Pennsylvania
Overview
Warren County in Pennsylvania covers 18 ZIP codes with an average Home Safety Score of C (67/100).
10 of 18 ZIP codes have recorded EPA violations. 6 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.