Public water system · PA1150866

Active

Ojrsd Warwick Admin Bldg

At a glance

Ojrsd Warwick Admin Bldg (PWSID PA1150866) is an active non-transient non-community water system in Chester County, Pennsylvania. It reports serving 126 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as under public/private ownership. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2024.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

126

Service connections

Primary source

Groundwater

System type

NTNCWS

Non-transient non-community water system

System record

PWSIDPA1150866

System typeNon-transient non-community water system

Activity statusActive

Population served126

Service connections1

Primary water sourceGroundwater

Owner typePublic/private partnership

Primacy agencyPA state drinking water program

City served—

StatePennsylvania

ZIP—

CountyChester County

How does Ojrsd Warwick Admin Bldg compare with other water systems in Chester County?

By EPA's size categories, Ojrsd Warwick Admin Bldg is a very small system (500 people or fewer). Chester County has 254 active public water systems. Its population served is well below the county average of 1,167 people per system, and accounts for less than 0.1% 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 non-transient non-community water system reports serving 430 people, so Ojrsd Warwick Admin Bldg 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 Ojrsd Warwick Admin Bldg?

EPA lists Ojrsd Warwick Admin Bldg as under public/private ownership. 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. 55 of the 254 active systems in Chester County (22%) are also under public/private ownership.

Does Ojrsd Warwick Admin Bldg 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 2024. The violations listed here began between January 2011 and January 2024. By type: 9 monitoring and reporting and 3 public notice, recordkeeping or other. The contaminant or rule involved most often is Public Notice (3 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
2024-01-11	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2022-01-01	Monitoring and reportingMonitoring, Regular · code 03	Atrazinecode 2050	No	Resolved
2016-04-01	Monitoring and reportingMonitoring, Regular · code 03	Nitritecode 1041	No	Resolved
2016-04-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
2015-01-01	Monitoring and reportingMonitoring, Regular · code 03	Dinosebcode 2041	No	Resolved
2015-01-01	Monitoring and reportingMonitoring, Regular · code 03	Picloramcode 2040	No	Resolved
2015-01-01	Monitoring and reportingMonitoring, Regular · code 03	Dalaponcode 2031	No	Resolved
2015-01-01	Monitoring and reportingMonitoring, Regular · code 03	2,4,5-TP (Silvex)code 2110	No	Resolved
2015-01-01	Monitoring and reportingMonitoring, Regular · code 03	2,4-Dcode 2105	No	Resolved
2015-01-01	Monitoring and reportingMonitoring, Regular · code 03	Pentachlorophenolcode 2326	No	Resolved
2011-04-11	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2011-01-11	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	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.

Ojrsd Warwick Admin Bldg: frequently asked questions

Who runs Ojrsd Warwick Admin Bldg?

Ojrsd Warwick Admin Bldg (PWSID PA1150866) is a non-transient non-community water system under public/private ownership. It is regulated by the PA state drinking water program.

How many people does Ojrsd Warwick Admin Bldg serve?

Ojrsd Warwick Admin Bldg reports serving 126 people through 1 service connection in Chester County, Pennsylvania.

Where does Ojrsd Warwick Admin Bldg 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 Ojrsd Warwick Admin Bldg 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 2024. 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 Ojrsd Warwick Admin Bldg'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 2024. For current results, consult EPA ECHO, or the PA state drinking water program.

Where can I find Ojrsd Warwick Admin Bldg's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Ojrsd Warwick Admin Bldg 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 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
Aqua Pa Uwchlan	Chester	35,518	Community	Purchased surface water
Phoenixville Water Dept	Chester	16,599	Community	Surface water
Downingtown Water Authority	Chester	9,900	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, “Ojrsd Warwick Admin Bldg, PWSID PA1150866, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/ojrsd-warwick-admin-bldg-pa1150866 (data as of October 1, 2026).