Public water system · WI1570503
ActiveEquinox Rei LLC Dellwood Estates
At a glance
Equinox Rei LLC Dellwood Estates (PWSID WI1570503) is an active community water system in Sauk County, Wisconsin. It reports serving 70 people through 32 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in August 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
70
Service connections
32
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Equinox Rei LLC Dellwood Estates compare with other water systems in Sauk County?
By EPA's size categories, Equinox Rei LLC Dellwood Estates is a very small system (500 people or fewer). Sauk County has 199 active public water systems. Its population served is well below the county average of 342 people per system, and accounts for 0.1% of the 68,062 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 Equinox Rei LLC Dellwood Estates 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 Equinox Rei LLC Dellwood Estates?
EPA lists Equinox Rei LLC Dellwood Estates 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. 154 of the 199 active systems in Sauk County (77%) are also privately owned.
Does Equinox Rei LLC Dellwood Estates have drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in August 2021. The violations listed here began between April 1998 and August 2021. By type: 2 public notice, recordkeeping or other, 1 monitoring, 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2021-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2019-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1998-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1998-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 5 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.
Equinox Rei LLC Dellwood Estates: frequently asked questions
Who runs Equinox Rei LLC Dellwood Estates?
Equinox Rei LLC Dellwood Estates (PWSID WI1570503) is a community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Equinox Rei LLC Dellwood Estates serve?
Equinox Rei LLC Dellwood Estates reports serving 70 people through 32 service connections in Sauk County, Wisconsin.
Where does Equinox Rei LLC Dellwood Estates 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 Equinox Rei LLC Dellwood Estates have any drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in August 2021. 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 Equinox Rei LLC Dellwood Estates' 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 5 violations for this system; 1 is health-based, and the most recent began in August 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Equinox Rei LLC Dellwood Estates' water quality report?
As a community water system, Equinox Rei LLC Dellwood Estates 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 Sauk County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Baraboo Waterworks | Sauk | 12,703 | Community | Groundwater |
| Reedsburg Waterworks | Sauk | 9,984 | Community | Groundwater |
| Ho Chunk Casino | Sauk | 5,486 | Non-transient non-community | Groundwater |
| Prairie Du Sac Waterworks | Sauk | 4,006 | Community | Groundwater |
| Sauk City Waterworks | Sauk | 3,518 | Community | Groundwater |
| Lake Delton Waterworks | Sauk | 2,914 | 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, “Equinox Rei LLC Dellwood Estates, PWSID WI1570503, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/equinox-rei-llc-dellwood-estates-wi1570503 (data as of October 1, 2026).