Public water system · WI6100329
ActiveLoyal Waterworks
At a glance
Loyal Waterworks (PWSID WI6100329) is an active community water system in Clark County, Wisconsin. It reports serving 1,308 people through 675 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in February 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,308
Service connections
675
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Loyal Waterworks compare with other water systems in Clark County?
By EPA's size categories, Loyal Waterworks is a small system (501 to 3,300 people). Clark County has 94 active public water systems, and Loyal Waterworks is the 3rd-largest of them by population served. Its population served is about 8.8 times the county average of 149 people per system, and accounts for 9.3% of the 14,002 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 Loyal 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 Loyal Waterworks?
EPA lists Loyal 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. 32 of the 94 active systems in Clark County (34%) are also owned by a local government.
Does Loyal Waterworks have drinking water violations?
EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in February 2015. The violations listed here began between June 1991 and February 2015. By type: 5 monitoring and reporting, 2 contaminant level above the legal limit and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 7 as resolved and 2 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2015-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2011-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2010-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2000-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2000-01-19 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1991-06-12 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
All 9 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.
Loyal Waterworks: frequently asked questions
Who runs Loyal Waterworks?
Loyal Waterworks (PWSID WI6100329) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Loyal Waterworks serve?
Loyal Waterworks reports serving 1,308 people through 675 service connections in Clark County, Wisconsin.
Where does Loyal 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 Loyal Waterworks have any drinking water violations?
EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in February 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 Loyal 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 9 violations for this system; 2 are health-based, and the most recent began in February 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Loyal Waterworks' water quality report?
As a community water system, Loyal 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 Clark County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Neillsville Waterworks | Clark | 2,384 | Community | Groundwater |
| Thorp Waterworks | Clark | 1,636 | Community | Groundwater |
| Greenwood Waterworks | Clark | 1,079 | Community | Groundwater |
| Owen Waterworks | Clark | 936 | Community | Groundwater |
| Dorchester Waterworks | Clark | 834 | Community | Groundwater |
| Clark County Rehabilitation & Living Center | Clark | 510 | 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, “Loyal Waterworks, PWSID WI6100329, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/loyal-waterworks-wi6100329 (data as of October 1, 2026).