Public water system · PA2590801
ActiveMillers Store Blackwell
At a glance
Millers Store Blackwell (PWSID PA2590801) is an active transient non-community water system in Tioga County, Pennsylvania. It reports serving 50 people through 1 service connection. 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 November 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Millers Store Blackwell compare with other water systems in Tioga County?
By EPA's size categories, Millers Store Blackwell is a very small system (500 people or fewer). Tioga County has 78 active public water systems. Its population served is well below the county average of 420 people per system, and accounts for 0.2% of the 32,718 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 Millers Store Blackwell is about 65% below 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 Millers Store Blackwell?
EPA lists Millers Store Blackwell 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. 43 of the 78 active systems in Tioga County (55%) are also privately owned.
Does Millers Store Blackwell have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in November 2020. The violations listed here began between December 2016 and November 2020. By type: 9 monitoring and reporting, 2 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (5 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 |
|---|---|---|---|---|
| 2020-11-09 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2020-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2020-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2019-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2019-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2017-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2017-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2016-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Millers Store Blackwell: frequently asked questions
Who runs Millers Store Blackwell?
Millers Store Blackwell (PWSID PA2590801) is a transient non-community water system privately owned. It is regulated by the PA state drinking water program.
How many people does Millers Store Blackwell serve?
Millers Store Blackwell reports serving 50 people through 1 service connection in Tioga County, Pennsylvania.
Where does Millers Store Blackwell 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 Millers Store Blackwell 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 November 2020. 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 Millers Store Blackwell'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 November 2020. For current results, consult EPA ECHO, or the PA state drinking water program.
Where can I find Millers Store Blackwell's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Millers Store Blackwell 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 Tioga County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wellsboro Municipal Authority | Tioga | 8,225 | Community | Surface water |
| Mansfield Borough Mun Auth | Tioga | 4,100 | Community | Surface water |
| Mansfield University | Tioga | 3,000 | Community | Surface water |
| Elkland Boro Water Authority | Tioga | 2,660 | Community | Groundwater |
| Blossburg Municipal Authority | Tioga | 1,650 | Community | Surface water |
| Rb Walter & Williamson Schools | Tioga | 1,400 | 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, “Millers Store Blackwell, PWSID PA2590801, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/millers-store-blackwell-pa2590801 (data as of October 1, 2026).