Public water system · PA1150035
ActiveAqua Pa Uwchlan
At a glance
Aqua Pa Uwchlan (PWSID PA1150035) is an active community water system in Chester County, Pennsylvania. It reports serving 35,518 people through 16,600 service connections. Its primary water source is purchased surface water, 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 September 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
35,518
Service connections
16,600
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Aqua Pa Uwchlan compare with other water systems in Chester County?
By EPA's size categories, Aqua Pa Uwchlan is a large system (10,001 to 100,000 people). Chester County has 254 active public water systems, and Aqua Pa Uwchlan is the 4th-largest of them by population served. Its population served is about 30 times the county average of 1,167 people per system, and accounts for 12% of the 296,348 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 Aqua Pa Uwchlan is about 5.3 times 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 244 Pennsylvania systems (3.4%) list purchased surface water as their primary source.
Who owns and regulates Aqua Pa Uwchlan?
EPA lists Aqua Pa Uwchlan 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. 173 of the 254 active systems in Chester County (68%) are also privately owned.
Does Aqua Pa Uwchlan have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2020. The violations listed here began between January 2000 and September 2020. By type: 10 monitoring and reporting, 1 monitoring and 1 public notice, recordkeeping or other. 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 |
|---|---|---|---|---|
| 2020-09-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2017-09-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2017-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2001-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2001-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2001-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2001-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2001-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | 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.
Aqua Pa Uwchlan: frequently asked questions
Who runs Aqua Pa Uwchlan?
Aqua Pa Uwchlan (PWSID PA1150035) is a community water system privately owned. It is regulated by the PA state drinking water program.
How many people does Aqua Pa Uwchlan serve?
Aqua Pa Uwchlan reports serving 35,518 people through 16,600 service connections in Chester County, Pennsylvania.
Where does Aqua Pa Uwchlan get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Aqua Pa Uwchlan 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 September 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 Aqua Pa Uwchlan'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 September 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the PA state drinking water program.
Where can I find Aqua Pa Uwchlan's water quality report?
As a community water system, Aqua Pa Uwchlan 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 Chester County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Pa American Royersford | Chester | 49,508 | Community | Surface water |
| Aqua Pa West Chester | Chester | 48,600 | Community | Surface water |
| Pa American Coatesville | Chester | 36,960 | Community | Surface water |
| Phoenixville Water Dept | Chester | 16,599 | Community | Surface water |
| Downingtown Water Authority | Chester | 9,900 | Community | Surface water |
| Aqua Pa Friendship | Chester | 8,800 | 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, “Aqua Pa Uwchlan, PWSID PA1150035, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/aqua-pa-uwchlan-pa1150035 (data as of October 1, 2026).