Public water system · PA7220373
ActiveLondonderry Elem Sch
At a glance
Londonderry Elem Sch (PWSID PA7220373) is an active non-transient non-community water system in Dauphin County, Pennsylvania. It reports serving 465 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, one is health-based, and the most recent began in June 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
465
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Londonderry Elem Sch compare with other water systems in Dauphin County?
By EPA's size categories, Londonderry Elem Sch is a very small system (500 people or fewer). Dauphin County has 134 active public water systems. Its population served is well below the county average of 2,176 people per system, and accounts for 0.2% of the 291,539 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 Londonderry Elem Sch is roughly in line with 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 Londonderry Elem Sch?
EPA lists Londonderry Elem Sch 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 134 active systems in Dauphin County (16%) are also owned by a local government.
Does Londonderry Elem Sch have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in June 2025. The violations listed here began between July 2006 and June 2025. By type: 8 monitoring and reporting, 2 monitoring, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (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 |
|---|---|---|---|---|
| 2025-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2016-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2013-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2006-10-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2006-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | 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.
Londonderry Elem Sch: frequently asked questions
Who runs Londonderry Elem Sch?
Londonderry Elem Sch (PWSID PA7220373) 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 Londonderry Elem Sch serve?
Londonderry Elem Sch reports serving 465 people through 1 service connection in Dauphin County, Pennsylvania.
Where does Londonderry Elem Sch 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 Londonderry Elem Sch 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 June 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 Londonderry Elem Sch'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 June 2025. For current results, consult EPA ECHO, or the PA state drinking water program.
Where can I find Londonderry Elem Sch's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Londonderry Elem Sch 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 Dauphin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Veolia Water | Dauphin | 110,000 | Community | Surface water |
| Capital Region Water | Dauphin | 66,540 | Community | Surface water |
| Pa Amer Water Co | Dauphin | 50,200 | Community | Surface water |
| Veolia Middletown | Dauphin | 9,600 | Community | Groundwater |
| Pa American Water Steelton | Dauphin | 6,428 | Community | Surface water |
| Penn National Gaming | Dauphin | 6,000 | 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, “Londonderry Elem Sch, PWSID PA7220373, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/londonderry-elem-sch-pa7220373 (data as of October 1, 2026).