Public water system · PA4550022
ActiveShamokin Dam Borough
At a glance
Shamokin Dam Borough (PWSID PA4550022) is an active community water system in Snyder County, Pennsylvania. It reports serving 1,700 people through 748 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,700
Service connections
748
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Shamokin Dam Borough compare with other water systems in Snyder County?
By EPA's size categories, Shamokin Dam Borough is a small system (501 to 3,300 people). Snyder County has 45 active public water systems, and Shamokin Dam Borough is the 3rd-largest of them by population served. Its population served is about 3.3 times the county average of 519 people per system, and accounts for 7.3% of the 23,360 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 Shamokin Dam Borough 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 246 Pennsylvania systems (3.4%) list surface water as their primary source.
Who owns and regulates Shamokin Dam Borough?
EPA lists Shamokin Dam Borough as owned by a local 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. 13 of the 45 active systems in Snyder County (29%) are also owned by a local government.
Does Shamokin Dam Borough have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2025. The violations listed here began between April 2017 and April 2025. By type: 10 monitoring and reporting, 1 reporting and 1 required treatment not met. The contaminant or rule involved most often is Surface Water Treatment Rule (2 of them). EPA lists 12 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-04-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2024-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Resolved |
| 2024-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2023-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2021-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2021-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2018-08-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2017-04-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | 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.
Shamokin Dam Borough: frequently asked questions
Who runs Shamokin Dam Borough?
Shamokin Dam Borough (PWSID PA4550022) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Shamokin Dam Borough serve?
Shamokin Dam Borough reports serving 1,700 people through 748 service connections in Snyder County, Pennsylvania.
Where does Shamokin Dam Borough get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Shamokin Dam Borough have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 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 Shamokin Dam Borough'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. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 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 Shamokin Dam Borough's water quality report?
As a community water system, Shamokin Dam Borough 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 Snyder County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Selinsgrove Muni Auth | Snyder | 5,584 | Community | Groundwater |
| Aqua Pa Monroe Twp | Snyder | 2,400 | Community | Groundwater |
| Middleburg Municipal Authority | Snyder | 1,600 | Community | Surface water |
| Selinsgrove Center | Snyder | 1,000 | Community | Groundwater under influence of surface water |
| Kreamer Mun Auth | Snyder | 980 | Community | Groundwater |
| Beavertown Municipal Authority | Snyder | 935 | 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, “Shamokin Dam Borough, PWSID PA4550022, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/shamokin-dam-borough-pa4550022 (data as of October 1, 2026).