Public water system · WI1220089
ActiveBoscobel Waterworks
At a glance
Boscobel Waterworks (PWSID WI1220089) is an active community water system in Grant County, Wisconsin. It reports serving 3,237 people through 1,273 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in November 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,237
Service connections
1,273
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Boscobel Waterworks compare with other water systems in Grant County?
By EPA's size categories, Boscobel Waterworks is a small system (501 to 3,300 people). Grant County has 90 active public water systems, and Boscobel Waterworks is the 3rd-largest of them by population served. Its population served is about 7 times the county average of 463 people per system, and accounts for 7.8% of the 41,674 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so Boscobel Waterworks is about half of 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. Wisconsin has 1,053 active community water systems, 9.5% 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 Boscobel Waterworks?
EPA lists Boscobel Waterworks 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. 21 of the 90 active systems in Grant County (23%) are also owned by a local government.
Does Boscobel Waterworks have drinking water violations?
EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in November 2010. The violations listed here began between May 1997 and November 2010. By type: 3 public notice, recordkeeping or other, 3 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Public Notice (3 of them). EPA lists 7 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 |
|---|---|---|---|---|
| 2010-11-03 | 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, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 2010-09-23 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2010-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 2010-05-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2010-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 1997-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 7 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.
Boscobel Waterworks: frequently asked questions
Who runs Boscobel Waterworks?
Boscobel Waterworks (PWSID WI1220089) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Boscobel Waterworks serve?
Boscobel Waterworks reports serving 3,237 people through 1,273 service connections in Grant County, Wisconsin.
Where does Boscobel Waterworks 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 Boscobel Waterworks have any drinking water violations?
EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in November 2010. 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 Boscobel Waterworks' 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 7 violations for this system; 3 are health-based, and the most recent began in November 2010. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Boscobel Waterworks' water quality report?
As a community water system, Boscobel Waterworks 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 Grant County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Platteville Waterworks | Grant | 12,268 | Community | Groundwater |
| Lancaster Waterworks | Grant | 3,907 | Community | Groundwater |
| Fennimore Waterworks | Grant | 2,507 | Community | Groundwater |
| Cuba City Waterworks | Grant | 2,141 | Community | Groundwater |
| Muscoda Waterworks | Grant | 1,453 | Community | Groundwater |
| Hazel Green Waterworks | Grant | 1,193 | 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, “Boscobel Waterworks, PWSID WI1220089, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/boscobel-waterworks-wi1220089 (data as of October 1, 2026).