Public water system · WI1250080
ActiveHighland Waterworks
At a glance
Highland Waterworks (PWSID WI1250080) is an active community water system in Iowa County, Wisconsin. It reports serving 842 people through 311 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in January 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
842
Service connections
311
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Highland Waterworks compare with other water systems in Iowa County?
By EPA's size categories, Highland Waterworks is a small system (501 to 3,300 people). Iowa County has 78 active public water systems, and Highland Waterworks is the 6th-largest of them by population served. Its population served is about 153% above the county average of 333 people per system, and accounts for 3.2% of the 25,964 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 Highland Waterworks 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 Highland Waterworks?
EPA lists Highland 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. 19 of the 78 active systems in Iowa County (24%) are also owned by a local government.
Does Highland Waterworks have drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in January 2009. The violations listed here began between July 1993 and January 2009. By type: 4 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2003-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1994-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 6 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.
Highland Waterworks: frequently asked questions
Who runs Highland Waterworks?
Highland Waterworks (PWSID WI1250080) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Highland Waterworks serve?
Highland Waterworks reports serving 842 people through 311 service connections in Iowa County, Wisconsin.
Where does Highland 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 Highland Waterworks have any drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in January 2009. 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 Highland 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 6 violations for this system; 2 are health-based, and the most recent began in January 2009. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Highland Waterworks' water quality report?
As a community water system, Highland 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 Iowa County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Dodgeville Waterworks | Iowa | 4,583 | Community | Groundwater |
| Mineral Point Waterworks | Iowa | 2,487 | Community | Groundwater |
| House on the Rock | Iowa | 2,025 | Non-transient non-community | Groundwater |
| Barneveld Waterworks | Iowa | 1,258 | Community | Groundwater |
| Arena Waterworks | Iowa | 877 | Community | Groundwater |
| American Players Theatre -Gateway | Iowa | 821 | 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, “Highland Waterworks, PWSID WI1250080, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/highland-waterworks-wi1250080 (data as of October 1, 2026).