Lycoming County, Pennsylvania
20 ZIP codes · Avg score 44/100 · Grade D · Updated 2026-06-03
Poor compliance rates put Lycoming County in the bottom safety tier — 20 ZIP codes, below the state average.
How Lycoming County Compares
How Lycoming County Compares
Lycoming County scores 11 points below the Pennsylvania state average (55/100) and 24 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Lycoming 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: $2,520, driven primarily by flood
Infrastructure: 0.483% avg pipe failure probability, 90% of ZIPs at high risk
73.9% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Lycoming County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 6 violations. Past 5 years: 18 total (18 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: $2,520
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
53,417 housing units in Lycoming 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 Lycoming County
Remediation costs are relatively manageable for most homeowners in Lycoming 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 Lycoming County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Collomsville Mutual Waterworks | 250 | 138 |
| 2 | Williamsport Mun Water Authority | 51,000 | 122 |
| 3 | Lcwsa Limestone Water | 825 | 99 |
| 4 | Oak Lynn Manor Mobile Home Pk | 250 | 92 |
| 5 | Foxcroft Manor Mobile Home Pk | 200 | 92 |
28 total water systems serve Lycoming County.
All ZIP Codes in Lycoming County
20 ZIP codes tracked in Lycoming County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 17754 | Montoursville | 54 | D | 30 (1 health) | $249K |
| 2 | 17705 | Williamsport | 53 | D | 23 | — |
| 3 | 17723 | Cammal | 53 | D | 0 | $194K |
| 4 | 17742 | Lairdsville | 53 | D | 0 | $163K |
| 5 | 17762 | Picture Rocks | 53 | D | 0 | $180K |
| 6 | 17772 | Turbotville | 53 | D | 0 | $232K |
| 7 | 17703 | Williamsport | 52 | D | 23 | — |
| 8 | 17763 | Ralston | 52 | D | 17 (2 health) | $113K |
| 9 | 17740 | Jersey Shore | 51 | D | 46 (1 health) | $182K |
| 10 | 17752 | Montgomery | 51 | D | 12 (1 health) | $181K |
| 11 | 17702 | Williamsport | 47 | D | 23 | $194K |
| 12 | 17739 | Jersey Mills | 45 | D | 0 | $231K |
| 13 | 17810 | Allenwood | 40 | D | 0 | $207K |
| 14 | 17744 | Linden | 38 | F | 21 | $185K |
| 15 | 17776 | Waterville | 38 | F | 5 | $176K |
| 16 | 17701 | Williamsport | 37 | F | 23 | $176K |
| 17 | 17728 | Cogan Station | 35 | F | 0 | $236K |
| 18 | 17771 | Trout Run | 31 | F | 5 (1 health) | $194K |
| 19 | 17737 | Hughesville | 26 | F | 26 | $199K |
| 20 | 17756 | Muncy | 16 | F | 28 | $215K |
Recommended Buyer Guides for Lycoming 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 Water Filters for Lead — Lead above EPA action level in 4 ZIP codes
- Best Lead Paint Test Kits — 73.9% 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
Deep Dive Reports
Detailed analysis for Lycoming County, Pennsylvania
Overview
Lycoming County in Pennsylvania covers 20 ZIP codes with an average Home Safety Score of D (44/100).
13 of 20 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.
What You Can Do
Lycoming 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
73.9% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.