Public water system · PA4190016
ActiveAqua Pa Mifflin Township
At a glance
Aqua Pa Mifflin Township (PWSID PA4190016) is an active community water system in Columbia County, Pennsylvania. It reports serving 1,220 people through 589 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, one is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,220
Service connections
589
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Aqua Pa Mifflin Township compare with other water systems in Columbia County?
By EPA's size categories, Aqua Pa Mifflin Township is a small system (501 to 3,300 people). Columbia County has 87 active public water systems. Its population served is about 64% above the county average of 744 people per system, and accounts for 1.9% of the 64,697 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 Aqua Pa Mifflin Township 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 Aqua Pa Mifflin Township?
EPA lists Aqua Pa Mifflin Township 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. 69 of the 87 active systems in Columbia County (79%) are also privately owned.
Does Aqua Pa Mifflin Township have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2025. The violations listed here began between April 2008 and July 2025. By type: 10 monitoring and reporting, 1 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Chlorine (4 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 |
|---|---|---|---|---|
| 2025-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross Beta Particle Activitycode 4100 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross Beta Particle Activitycode 4100 | No | Resolved |
| 2021-02-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2018-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2016-08-13 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-08-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2010-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2010-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross Beta Particle Activitycode 4100 | No | Resolved |
| 2009-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2008-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | 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.
Aqua Pa Mifflin Township: frequently asked questions
Who runs Aqua Pa Mifflin Township?
Aqua Pa Mifflin Township (PWSID PA4190016) is a community water system privately owned. It is regulated by the PA state drinking water program.
How many people does Aqua Pa Mifflin Township serve?
Aqua Pa Mifflin Township reports serving 1,220 people through 589 service connections in Columbia County, Pennsylvania.
Where does Aqua Pa Mifflin Township 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 Aqua Pa Mifflin Township 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 July 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 Aqua Pa Mifflin Township'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 July 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 Aqua Pa Mifflin Township's water quality report?
As a community water system, Aqua Pa Mifflin Township 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 Columbia County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Veolia Water Pa Inc. Bloomsburg | Columbia | 29,382 | Community | Surface water |
| Pa American Water Berwick | Columbia | 15,282 | Community | Groundwater |
| Knoebels Grove Park | Columbia | 4,000 | Non-transient non-community | Groundwater |
| Southern Columbia Area School | Columbia | 1,650 | Non-transient non-community | Groundwater |
| Catawissa Municipal Water Auth | Columbia | 1,644 | Community | Groundwater |
| Benton Municipal Water Auth | Columbia | 1,333 | Community | Groundwater under influence of surface water |
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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, “Aqua Pa Mifflin Township, PWSID PA4190016, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/aqua-pa-mifflin-township-pa4190016 (data as of October 1, 2026).