Public water system · PA6420304
ActiveUsfs Willow Bay
At a glance
Usfs Willow Bay (PWSID PA6420304) is an active transient non-community water system in McKean County, Pennsylvania. It reports serving 200 people through 24 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in April 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
200
Service connections
24
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Usfs Willow Bay compare with other water systems in McKean County?
By EPA's size categories, Usfs Willow Bay is a very small system (500 people or fewer). McKean County has 54 active public water systems. Its population served is well below the county average of 738 people per system, and accounts for 0.5% of the 39,840 people reported by systems filed under the county. Across Pennsylvania, the 7,217 active systems average 1,741 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Usfs Willow Bay is about 39% above that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Pennsylvania has 4,429 active transient non-community water systems, 61% of the state's 7,217 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,632 Pennsylvania systems (92%) list groundwater as their primary source.
Who owns and regulates Usfs Willow Bay?
EPA lists Usfs Willow Bay as owned by the federal government. The PA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 6 of the 54 active systems in McKean County (11%) are also owned by the federal government.
Does Usfs Willow Bay have drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in April 2018. The violations listed here began between December 1983 and April 2018. By type: 6 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Nitrate (4 of them). EPA lists 4 as resolved and 3 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2018-04-04 | Required treatment not metTreatment Technique Startup Procedures (RTCR) · code 2D | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 1989-12-24 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1986-12-24 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1983-12-24 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
All 7 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Usfs Willow Bay: frequently asked questions
Who runs Usfs Willow Bay?
Usfs Willow Bay (PWSID PA6420304) is a transient non-community water system owned by the federal government. It is regulated by the PA state drinking water program.
How many people does Usfs Willow Bay serve?
Usfs Willow Bay reports serving 200 people through 24 service connections in McKean County, Pennsylvania.
Where does Usfs Willow Bay get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Usfs Willow Bay have any drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in April 2018. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Usfs Willow Bay's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in April 2018. For current results, consult EPA ECHO, or the PA state drinking water program.
Where can I find Usfs Willow Bay's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Usfs Willow Bay is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in McKean County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bradford City Water Authority | McKean | 18,500 | Community | Surface water |
| Pa American Water Co Kane | McKean | 5,725 | Community | Surface water |
| Port Allegany Water Department | McKean | 2,591 | Community | Groundwater |
| Smethport Borough | McKean | 2,400 | Community | Groundwater |
| Aqua Pa Mt Jewett | McKean | 972 | Community | Groundwater |
| Lewis Run Borough | McKean | 892 | Community | Purchased surface water |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Usfs Willow Bay, PWSID PA6420304, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/usfs-willow-bay-pa6420304 (data as of October 1, 2026).