Public water system · PA4140090
ActiveMountaintop Reg Water Auth
At a glance
Mountaintop Reg Water Auth (PWSID PA4140090) is an active community water system in Centre County, Pennsylvania. It reports serving 3,456 people through 1,331 service connections. 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, one is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,456
Service connections
1,331
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mountaintop Reg Water Auth compare with other water systems in Centre County?
By EPA's size categories, Mountaintop Reg Water Auth is a medium system (3,301 to 10,000 people). Centre County has 76 active public water systems, and Mountaintop Reg Water Auth is the 6th-largest of them by population served. Its population served is about 45% above the county average of 2,375 people per system, and accounts for 1.9% of the 180,520 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 Mountaintop Reg Water Auth is about half of 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 Mountaintop Reg Water Auth?
EPA lists Mountaintop Reg Water Auth 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. 21 of the 76 active systems in Centre County (28%) are also owned by a local government.
Does Mountaintop Reg Water Auth have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2025. The violations listed here began between July 2018 and October 2025. By type: 5 monitoring and reporting, 3 public notice, recordkeeping or other, 2 monitoring, 1 required treatment not met and 1 reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). EPA lists 7 as resolved, 4 as archived and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Archived |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Archived |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 2025-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2025-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2021-11-14 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2021-10-04 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2021-10-04 | ReportingNotify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR) · code 4F | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-03-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2018-10-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2018-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | 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.
Mountaintop Reg Water Auth: frequently asked questions
Who runs Mountaintop Reg Water Auth?
Mountaintop Reg Water Auth (PWSID PA4140090) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Mountaintop Reg Water Auth serve?
Mountaintop Reg Water Auth reports serving 3,456 people through 1,331 service connections in Centre County, Pennsylvania.
Where does Mountaintop Reg Water Auth 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 Mountaintop Reg Water Auth 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 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 Mountaintop Reg Water Auth'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 October 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 Mountaintop Reg Water Auth's water quality report?
As a community water system, Mountaintop Reg Water Auth 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 Centre County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| State College Boro Water Auth | Centre | 72,000 | Community | Surface water |
| Penn State Univ | Centre | 37,000 | Community | Groundwater |
| Paw Philipsburg | Centre | 20,865 | Community | Surface water |
| Bellefonte Borough Water Auth | Centre | 9,500 | Community | Groundwater |
| College Twp Water Authority | Centre | 6,000 | Community | Groundwater |
| Spring Twp Water Authority | Centre | 3,300 | 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, “Mountaintop Reg Water Auth, PWSID PA4140090, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/mountaintop-reg-water-auth-pa4140090 (data as of October 1, 2026).