Public water system · PA4410179
ActiveCollomsville Mutual Waterworks
At a glance
Collomsville Mutual Waterworks (PWSID PA4410179) is an active community water system in Lycoming County, Pennsylvania. It reports serving 250 people through 87 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
250
Service connections
87
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Collomsville Mutual Waterworks compare with other water systems in Lycoming County?
By EPA's size categories, Collomsville Mutual Waterworks is a very small system (500 people or fewer). Lycoming County has 126 active public water systems. Its population served is about 64% below the county average of 702 people per system, and accounts for 0.3% of the 88,482 people reported by systems filed under the county. Across Pennsylvania, the 7,217 active systems average 1,741 people each. Nationally, the average active community water system reports serving 6,703 people, so Collomsville Mutual Waterworks is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Pennsylvania has 1,762 active community water systems, 24% 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 Collomsville Mutual Waterworks?
EPA lists Collomsville Mutual Waterworks as privately owned. 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. 103 of the 126 active systems in Lycoming County (82%) are also privately owned.
Does Collomsville Mutual Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. The violations listed here began between June 2023 and October 2025. By type: 6 monitoring and reporting and 6 public notice, recordkeeping or other. The contaminant or rule involved most often is Consumer Confidence Rule (4 of them). EPA lists 8 as resolved and 4 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Archived |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Archived |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Archived |
| 2024-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2024-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2024-05-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2023-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-06-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
The 12 most recent 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.
Collomsville Mutual Waterworks: frequently asked questions
Who runs Collomsville Mutual Waterworks?
Collomsville Mutual Waterworks (PWSID PA4410179) is a community water system privately owned. It is regulated by the PA state drinking water program.
How many people does Collomsville Mutual Waterworks serve?
Collomsville Mutual Waterworks reports serving 250 people through 87 service connections in Lycoming County, Pennsylvania.
Where does Collomsville Mutual Waterworks 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 Collomsville Mutual Waterworks have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. 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 Collomsville Mutual Waterworks' 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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the PA state drinking water program.
Where can I find Collomsville Mutual Waterworks' water quality report?
As a community water system, Collomsville Mutual Waterworks must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Lycoming County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Williamsport Mun Water Auth | Lycoming | 51,000 | Community | Surface water |
| Jersey Shore Area Jnt Wat Auth | Lycoming | 6,600 | Community | Surface water |
| Montoursville Water Company | Lycoming | 4,983 | Community | Groundwater |
| Muncy Borough Water Company | Lycoming | 2,900 | Community | Groundwater |
| Hughesville Borough Water Auth | Lycoming | 2,800 | Community | Groundwater |
| Montgomery Water Authority | Lycoming | 2,700 | Community | Groundwater |
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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, “Collomsville Mutual Waterworks, PWSID PA4410179, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/collomsville-mutual-waterworks-pa4410179 (data as of October 1, 2026).