Public water system · WI6060335
ActiveGilmanton Middle/High School
At a glance
Gilmanton Middle/High School (PWSID WI6060335) is an active non-transient non-community water system in Buffalo County, Wisconsin. It reports serving 125 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in November 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
125
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Gilmanton Middle/High School compare with other water systems in Buffalo County?
By EPA's size categories, Gilmanton Middle/High School is a very small system (500 people or fewer). Buffalo County has 69 active public water systems. Its population served is roughly in line with the county average of 127 people per system, and accounts for 1.4% of the 8,759 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 Gilmanton Middle/High School 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. 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 Gilmanton Middle/High School?
EPA lists Gilmanton Middle/High School 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. 17 of the 69 active systems in Buffalo County (25%) are also owned by a local government.
Does Gilmanton Middle/High School have drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in November 2015. The violations listed here began between October 1994 and November 2015. By type: 8 contaminant level above the legal limit, 2 public notice, recordkeeping or other and 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (10 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 |
|---|---|---|---|---|
| 2015-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2015-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-11-04 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2010-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-10-08 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2010-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2001-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Gilmanton Middle/High School: frequently asked questions
Who runs Gilmanton Middle/High School?
Gilmanton Middle/High School (PWSID WI6060335) 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 Gilmanton Middle/High School serve?
Gilmanton Middle/High School reports serving 125 people through 1 service connection in Buffalo County, Wisconsin.
Where does Gilmanton Middle/High School 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 Gilmanton Middle/High School have any drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in November 2015. 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 Gilmanton Middle/High School'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, 8 are health-based, and the most recent began in November 2015. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Gilmanton Middle/High School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Gilmanton Middle/High School 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 Buffalo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mondovi Waterworks | Buffalo | 2,667 | Community | Groundwater |
| Alma Waterworks | Buffalo | 769 | Community | Groundwater |
| Cochrane Fountain City School | Buffalo | 635 | Non-transient non-community | Groundwater |
| Cochrane Waterworks | Buffalo | 450 | Community | Groundwater |
| Fountain City Waterworks | Buffalo | 443 | Community | Groundwater |
| Nelson Water & Sewer Dept | Buffalo | 375 | 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, “Gilmanton Middle/High School, PWSID WI6060335, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/gilmanton-middle-high-school-wi6060335 (data as of October 1, 2026).