Public water system · WI7340086
ActiveAntigo Waterworks
At a glance
Antigo Waterworks (PWSID WI7340086) is an active community water system in Langlade County, Wisconsin. It reports serving 7,780 people through 3,895 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
7,780
Service connections
3,895
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Antigo Waterworks compare with other water systems in Langlade County?
By EPA's size categories, Antigo Waterworks is a medium system (3,301 to 10,000 people). Langlade County has 117 active public water systems, and Antigo Waterworks is the largest of them by population served. Its population served is about 47 times the county average of 165 people per system, and accounts for 40% of the 19,356 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 Antigo Waterworks is about 16% above 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 Antigo Waterworks?
EPA lists Antigo 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. 10 of the 117 active systems in Langlade County (8.5%) are also owned by a local government.
Does Antigo Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in July 2025. The violations listed here began between July 1994 and July 2025. By type: 5 required treatment not met, 4 public notice, recordkeeping or other and 3 monitoring and reporting. The contaminant or rule involved most often is Groundwater Rule (4 of them). EPA lists 10 as resolved, 1 as addressed and 1 as unaddressed. 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. Addressed means the violation is not resolved or archived and is covered by formal enforcement. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Addressed |
| 2025-02-01 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2025-02-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-12-16 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-12-16 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-10-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2022-04-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2022-04-02 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2012-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1994-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1994-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
The 12 most recent 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.
Antigo Waterworks: frequently asked questions
Who runs Antigo Waterworks?
Antigo Waterworks (PWSID WI7340086) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Antigo Waterworks serve?
Antigo Waterworks reports serving 7,780 people through 3,895 service connections in Langlade County, Wisconsin.
Where does Antigo 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 Antigo Waterworks have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in July 2025. 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 Antigo 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. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Antigo Waterworks' water quality report?
As a community water system, Antigo 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 Langlade County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Northwoods Inn | Langlade | 700 | Transient non-community | Groundwater |
| Scouting America Camp Mkjw East Camp 1 | Langlade | 650 | Transient non-community | Groundwater |
| Scouting America Camp Mkjw West Camp 1 | Langlade | 450 | Transient non-community | Groundwater |
| Scouting America Mkjw West Camp 2 | Langlade | 450 | Transient non-community | Groundwater |
| Silver Birch Ranch Dorms | Langlade | 422 | Transient non-community | Groundwater |
| Silver Birch Ranch Horse Bldg and Dining Hall | Langlade | 420 | 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, “Antigo Waterworks, PWSID WI7340086, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/antigo-waterworks-wi7340086 (data as of October 1, 2026).