Public water system · WI2680437
ActiveElmbrook Memorial Hospital
At a glance
Elmbrook Memorial Hospital (PWSID WI2680437) is an active non-transient non-community water system in Waukesha County, Wisconsin. It reports serving 1,250 people through 1 service connection. 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 January 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,250
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Elmbrook Memorial Hospital compare with other water systems in Waukesha County?
By EPA's size categories, Elmbrook Memorial Hospital is a small system (501 to 3,300 people). Waukesha County has 589 active public water systems. Its population served is about 128% above the county average of 549 people per system, and accounts for 0.4% of the 323,265 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Elmbrook Memorial Hospital is about 191% 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. Wisconsin has 891 active non-transient non-community water systems, 8.1% of the state's 11,056 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,978 Wisconsin systems (99%) list groundwater as their primary source.
Who owns and regulates Elmbrook Memorial Hospital?
EPA lists Elmbrook Memorial Hospital as privately owned. The WI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 452 of the 589 active systems in Waukesha County (77%) are also privately owned.
Does Elmbrook Memorial Hospital 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 2014. The violations listed here began between January 1995 and January 2014. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 10 as resolved and 2 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. 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 |
|---|---|---|---|---|
| 2014-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2002-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2001-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1999-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Glyphosatecode 2034 | No | Resolved |
| 1995-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Resolved |
| 1995-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Diquatcode 2032 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Heptachlorcode 2065 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | 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.
Elmbrook Memorial Hospital: frequently asked questions
Who runs Elmbrook Memorial Hospital?
Elmbrook Memorial Hospital (PWSID WI2680437) is a non-transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Elmbrook Memorial Hospital serve?
Elmbrook Memorial Hospital reports serving 1,250 people through 1 service connection in Waukesha County, Wisconsin.
Where does Elmbrook Memorial Hospital 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 Elmbrook Memorial Hospital 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 2014. 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 Elmbrook Memorial Hospital'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 2014. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Elmbrook Memorial Hospital's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Elmbrook Memorial Hospital 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 Waukesha County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Waukesha Water Utility | Waukesha | 70,718 | Community | Purchased surface water |
| Brookfield Water Utility | Waukesha | 29,070 | Community | Groundwater |
| New Berlin Water Utility | Waukesha | 27,899 | Community | Purchased surface water |
| Menomonee Falls Ww - Surface Water | Waukesha | 23,867 | Community | Purchased surface water |
| Oconomowoc Waterworks | Waukesha | 15,805 | Community | Groundwater |
| Sussex Village Hall & Water Utility | Waukesha | 11,750 | 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, “Elmbrook Memorial Hospital, PWSID WI2680437, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/elmbrook-memorial-hospital-wi2680437 (data as of October 1, 2026).