Public water system · WI7440657
ActiveMinocqua Hazelhurst Elem Sch
At a glance
Minocqua Hazelhurst Elem Sch (PWSID WI7440657) is an active non-transient non-community water system in Oneida County, Wisconsin. It reports serving 650 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
650
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Minocqua Hazelhurst Elem Sch compare with other water systems in Oneida County?
By EPA's size categories, Minocqua Hazelhurst Elem Sch is a small system (501 to 3,300 people). Oneida County has 345 active public water systems, and Minocqua Hazelhurst Elem Sch is the 3rd-largest of them by population served. Its population served is about 5.5 times the county average of 117 people per system, and accounts for 1.6% of the 40,498 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 Minocqua Hazelhurst Elem Sch is about 51% 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 Minocqua Hazelhurst Elem Sch?
EPA lists Minocqua Hazelhurst Elem Sch as owned by a local government. 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. 15 of the 345 active systems in Oneida County (4.3%) are also owned by a local government.
Does Minocqua Hazelhurst Elem Sch have drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2022. The violations listed here began between January 2000 and April 2022. By type: 5 monitoring and reporting, 1 monitoring, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2022-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-10-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2013-09-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2007-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2005-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2003-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 8 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.
Minocqua Hazelhurst Elem Sch: frequently asked questions
Who runs Minocqua Hazelhurst Elem Sch?
Minocqua Hazelhurst Elem Sch (PWSID WI7440657) is a non-transient non-community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Minocqua Hazelhurst Elem Sch serve?
Minocqua Hazelhurst Elem Sch reports serving 650 people through 1 service connection in Oneida County, Wisconsin.
Where does Minocqua Hazelhurst 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 Minocqua Hazelhurst Elem Sch have any drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2022. 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 Minocqua Hazelhurst 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. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in April 2022. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Minocqua Hazelhurst Elem Sch's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Minocqua Hazelhurst 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 Oneida County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rhinelander Water & Wastewater | Oneida | 8,234 | Community | Groundwater |
| Lakeland Sanitary Dist 1 | Oneida | 2,381 | Community | Groundwater |
| Scouting America Camp Tesomas Program Center and Dining Hall | Oneida | 500 | Transient non-community | Groundwater |
| Three Lakes Sanitary District | Oneida | 500 | Community | Groundwater |
| Wi Dnr Clear Lk Cmpgd 10 | Oneida | 450 | Transient non-community | Groundwater |
| Wi Dnr Clear Lk Cmpgd 7 | Oneida | 450 | 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, “Minocqua Hazelhurst Elem Sch, PWSID WI7440657, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/minocqua-hazelhurst-elem-sch-wi7440657 (data as of October 1, 2026).