Public water system · PA4490007
ActiveMunicipal Authority Sunbury
At a glance
Municipal Authority Sunbury (PWSID PA4490007) is an active community water system in Northumberland County, Pennsylvania. It reports serving 11,043 people through 4,331 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, none is health-based, and the most recent began in February 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
11,043
Service connections
4,331
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Municipal Authority Sunbury compare with other water systems in Northumberland County?
By EPA's size categories, Municipal Authority Sunbury is a large system (10,001 to 100,000 people). Northumberland County has 62 active public water systems, and Municipal Authority Sunbury is the 3rd-largest of them by population served. Its population served is about 7.3 times the county average of 1,513 people per system, and accounts for 12% of the 93,804 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 Municipal Authority Sunbury is about 65% above 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 Municipal Authority Sunbury?
EPA lists Municipal Authority Sunbury 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. 3 of the 62 active systems in Northumberland County (4.8%) are also owned by a local government.
Does Municipal Authority Sunbury have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2026. The violations listed here began between January 2023 and February 2026. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Surface Water Treatment Rule (3 of them). EPA lists 10 as resolved and 2 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 |
|---|---|---|---|---|
| 2026-02-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Archived |
| 2026-02-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2025-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2025-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2024-05-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-05-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | 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.
Municipal Authority Sunbury: frequently asked questions
Who runs Municipal Authority Sunbury?
Municipal Authority Sunbury (PWSID PA4490007) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Municipal Authority Sunbury serve?
Municipal Authority Sunbury reports serving 11,043 people through 4,331 service connections in Northumberland County, Pennsylvania.
Where does Municipal Authority Sunbury 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 Municipal Authority Sunbury 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 February 2026. 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 Municipal Authority Sunbury'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, none is health-based, and the most recent began in February 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the PA state drinking water program.
Where can I find Municipal Authority Sunbury's water quality report?
As a community water system, Municipal Authority Sunbury 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 Northumberland County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Aqua Pa Roaring Creek Division | Northumberland | 43,000 | Community | Surface water |
| Pa American White Deer | Northumberland | 30,209 | Community | Surface water |
| Sunbury Airport Campsite | Northumberland | 1,200 | Transient non-community | Groundwater |
| The Fence | Northumberland | 750 | Transient non-community | Groundwater |
| Pa American Turbotville | Northumberland | 705 | Community | Groundwater under influence of surface water |
| Line Mountain Sr High School | Northumberland | 644 | Non-transient non-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, “Municipal Authority Sunbury, PWSID PA4490007, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/municipal-authority-sunbury-pa4490007 (data as of October 1, 2026).