Public water system · PA7210344
ActiveAhlstrom Filtration LLC
At a glance
Ahlstrom Filtration LLC (PWSID PA7210344) is an active non-transient non-community water system in Cumberland County, Pennsylvania. It reports serving 40 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in August 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40
Service connections
2
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Ahlstrom Filtration LLC compare with other water systems in Cumberland County?
By EPA's size categories, Ahlstrom Filtration LLC is a very small system (500 people or fewer). Cumberland County has 94 active public water systems. Its population served is well below the county average of 2,619 people per system, and accounts for less than 0.1% of the 246,153 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 Ahlstrom Filtration LLC is well below 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 Ahlstrom Filtration LLC?
EPA lists Ahlstrom Filtration LLC 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. 58 of the 94 active systems in Cumberland County (62%) are also privately owned.
Does Ahlstrom Filtration LLC have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in August 2020. The violations listed here began between January 2013 and August 2020. By type: 9 monitoring and reporting, 2 public notice, recordkeeping or other and 1 monitoring. The contaminant or rule involved most often is Chlorine (3 of them). EPA lists 10 as resolved, 1 as unaddressed and 1 as archived. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2020-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-08-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2019-06-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2018-05-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dinosebcode 2041 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Oxamylcode 2036 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dalaponcode 2031 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Diquatcode 2032 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toxaphenecode 2020 | 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.
Ahlstrom Filtration LLC: frequently asked questions
Who runs Ahlstrom Filtration LLC?
Ahlstrom Filtration LLC (PWSID PA7210344) is a non-transient non-community water system privately owned. It is regulated by the PA state drinking water program.
How many people does Ahlstrom Filtration LLC serve?
Ahlstrom Filtration LLC reports serving 40 people through 2 service connections in Cumberland County, Pennsylvania.
Where does Ahlstrom Filtration LLC 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 Ahlstrom Filtration LLC 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 August 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 Ahlstrom Filtration LLC'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 August 2020. For current results, consult EPA ECHO, or the PA state drinking water program.
Where can I find Ahlstrom Filtration LLC's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ahlstrom Filtration LLC 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 Cumberland County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Pa American Water Co West | Cumberland | 105,127 | Community | Surface water |
| Veolia Mechanicsburg | Cumberland | 45,013 | Community | Surface water |
| Carlisle Water Trmt Plt | Cumberland | 26,000 | Community | Surface water |
| Shippensburg Boro Water Auth | Cumberland | 17,800 | Community | Surface water |
| South Middleton Twp Water Auth | Cumberland | 11,695 | Community | Purchased surface water |
| N Middleton Water Auth | Cumberland | 8,455 | Community | 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, “Ahlstrom Filtration LLC, PWSID PA7210344, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/ahlstrom-filtration-llc-pa7210344 (data as of October 1, 2026).