B65/100
ANTIGO WATERWORKS — Water Quality Report 2026
Serving 7,780 people · Wisconsin
Water Source
Groundwater
County
—
System ID
WI7340086
Violations
12
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
9
Violations (last 5yr)
2
Unresolved
5
Health-Related
TIER 2Unresolved
Violation related to Consumer Confidence Report
When: July 2, 2025Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: February 1, 2025 – April 26, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Violation related to Consumer Confidence Report
When: February 1, 2025 – March 18, 2025Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Violation related to Consumer Confidence Report
When: December 16, 2024 – December 30, 2024Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: December 16, 2024 – March 28, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – May 30, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Disinfection byproduct treatment technique failure
TIER 2Resolved
Violation related to Consumer Confidence Report
When: April 2, 2022 – August 4, 2022Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: April 2, 2022 – August 4, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About ANTIGO WATERWORKS
Is ANTIGO WATERWORKS water safe to drink?
ANTIGO WATERWORKS water receives a grade of B (65/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ANTIGO WATERWORKS detected?
31 contaminants were tested in ANTIGO WATERWORKS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does ANTIGO WATERWORKS have any EPA violations?
Yes, ANTIGO WATERWORKS has 12 EPA violation(s) on record, with the most recent in 2025. Violation types include TT, Other, MR. 5 are health-based violations.
How many people does ANTIGO WATERWORKS serve?
ANTIGO WATERWORKS serves approximately 7,780 people, Wisconsin. The system provides water to 1 community: Antigo.
What type of water does ANTIGO WATERWORKS provide?
ANTIGO WATERWORKS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WI7340086.
How does ANTIGO WATERWORKS compare to other utilities in Wisconsin?
ANTIGO WATERWORKS scores 65/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Wisconsin state page for a full comparison of water systems.