Public water system · PA4490309
ActiveLine Mountain Sr High School
At a glance
Line Mountain Sr High School (PWSID PA4490309) is an active non-transient non-community water system in Northumberland County, Pennsylvania. It reports serving 644 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 January 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
644
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Line Mountain Sr High School compare with other water systems in Northumberland County?
By EPA's size categories, Line Mountain Sr High School is a small system (501 to 3,300 people). Northumberland County has 62 active public water systems. Its population served is about 57% below the county average of 1,513 people per system, and accounts for 0.7% 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 non-transient non-community water system reports serving 430 people, so Line Mountain Sr High School is about 50% 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 Line Mountain Sr High School?
EPA lists Line Mountain Sr High 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. 3 of the 62 active systems in Northumberland County (4.8%) are also owned by a local government.
Does Line Mountain Sr High 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 January 2017. The violations listed here began between April 2011 and January 2017. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Haloacetic acids (HAA5) (2 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 |
|---|---|---|---|---|
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2014-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Pentachlorophenolcode 2326 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Picloramcode 2040 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dinosebcode 2041 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4-Dcode 2105 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dalaponcode 2031 | 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.
Line Mountain Sr High School: frequently asked questions
Who runs Line Mountain Sr High School?
Line Mountain Sr High School (PWSID PA4490309) 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 Line Mountain Sr High School serve?
Line Mountain Sr High School reports serving 644 people through 1 service connection in Northumberland County, Pennsylvania.
Where does Line Mountain Sr High 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 Line Mountain Sr High 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 January 2017. 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 Line Mountain Sr High 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 January 2017. For current results, consult EPA ECHO, or the PA state drinking water program.
Where can I find Line Mountain Sr High School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Line Mountain Sr High 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 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 |
| Municipal Authority Sunbury | Northumberland | 11,043 | 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 |
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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, “Line Mountain Sr High School, PWSID PA4490309, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/line-mountain-sr-high-school-pa4490309 (data as of October 1, 2026).