Public water system · PA5100316
ActiveDassa Mckinney Elem School
At a glance
Dassa Mckinney Elem School (PWSID PA5100316) is an active non-transient non-community water system in Butler County, Pennsylvania. It reports serving 650 people through 1 service connection. Its primary water source is groundwater, 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 October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
650
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Dassa Mckinney Elem School compare with other water systems in Butler County?
By EPA's size categories, Dassa Mckinney Elem School is a small system (501 to 3,300 people). Butler County has 155 active public water systems. Its population served is about 35% below the county average of 1,007 people per system, and accounts for 0.4% of the 156,059 people reported by systems filed under the county. Across Pennsylvania, the 7,217 active systems average 1,741 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Dassa Mckinney Elem School is about 51% above that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Pennsylvania has 1,026 active non-transient non-community water systems, 14% 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 Dassa Mckinney Elem School?
EPA lists Dassa Mckinney Elem School 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. 15 of the 155 active systems in Butler County (9.7%) are also owned by a local government.
Does Dassa Mckinney Elem School 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 January 1997 and October 2025. By type: 11 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (3 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2016-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2016-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2016-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2016-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2014-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2014-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 1997-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 1997-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 1997-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nickelcode 1036 | No | Resolved |
| 1997-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Thalliumcode 1085 | 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.
Dassa Mckinney Elem School: frequently asked questions
Who runs Dassa Mckinney Elem School?
Dassa Mckinney Elem School (PWSID PA5100316) is a non-transient non-community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Dassa Mckinney Elem School serve?
Dassa Mckinney Elem School reports serving 650 people through 1 service connection in Butler County, Pennsylvania.
Where does Dassa Mckinney Elem School 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 Dassa Mckinney Elem School 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 Dassa Mckinney Elem School'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 October 2025. For current results, consult EPA ECHO, or the PA state drinking water program.
Where can I find Dassa Mckinney Elem School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Dassa Mckinney Elem School is a non-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 Butler County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Pa American Water Co Butler | Butler | 43,286 | Community | Surface water |
| Cranberry Twp WTP | Butler | 42,000 | Community | Purchased surface water |
| Slippery Rock Muni Auth | Butler | 15,778 | Community | Groundwater |
| Municipal Water Auth Adams Twp | Butler | 8,700 | Community | Purchased surface water |
| Harmony Boro Water Auth | Butler | 6,669 | Community | Surface water |
| Zelienople Boro | Butler | 4,123 | Community | Purchased 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, “Dassa Mckinney Elem School, PWSID PA5100316, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/dassa-mckinney-elem-school-pa5100316 (data as of October 1, 2026).