Public water system · WI2460694
ActiveHaddonstone Subdivision
At a glance
Haddonstone Subdivision (PWSID WI2460694) is an active community water system in Ozaukee County, Wisconsin. It reports serving 195 people through 53 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in July 2001.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
195
Service connections
53
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Haddonstone Subdivision compare with other water systems in Ozaukee County?
By EPA's size categories, Haddonstone Subdivision is a very small system (500 people or fewer). Ozaukee County has 249 active public water systems. Its population served is about half of the county average of 371 people per system, and accounts for 0.2% of the 92,392 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 Haddonstone Subdivision is well below 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 Haddonstone Subdivision?
EPA lists Haddonstone Subdivision 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. 218 of the 249 active systems in Ozaukee County (88%) are also privately owned.
Does Haddonstone Subdivision have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in July 2001. By type: 1 public notice, recordkeeping or other. The contaminant or rule involved is Consumer Confidence Rule. EPA lists 1 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 |
|---|---|---|---|---|
| 2001-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
The one violation in EPA's records.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.
Haddonstone Subdivision: frequently asked questions
Who runs Haddonstone Subdivision?
Haddonstone Subdivision (PWSID WI2460694) is a community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Haddonstone Subdivision serve?
Haddonstone Subdivision reports serving 195 people through 53 service connections in Ozaukee County, Wisconsin.
Where does Haddonstone Subdivision 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 Haddonstone Subdivision have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in July 2001. 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 Haddonstone Subdivision'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 one violation for this system; it is not health-based, and the most recent began in July 2001. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Haddonstone Subdivision's water quality report?
As a community water system, Haddonstone Subdivision 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 Ozaukee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Port Washington Waterworks | Ozaukee | 12,853 | Community | Surface water |
| Cedarburg L & W Commission | Ozaukee | 12,500 | Community | Groundwater |
| Grafton Waterworks | Ozaukee | 12,269 | Community | Groundwater |
| Mequon Water Utility | Ozaukee | 11,152 | Community | Purchased surface water |
| Saukville Waterworks | Ozaukee | 4,268 | Community | Groundwater |
| Belgium Waterworks | Ozaukee | 2,493 | 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, “Haddonstone Subdivision, PWSID WI2460694, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/haddonstone-subdivision-wi2460694 (data as of October 1, 2026).