MONTELLO WATERWORKS
PWSID: WI4390281 · Montello, WI · Serves 1,329 people
According to EPA Safe Drinking Water Information System (SDWIS), MONTELLO WATERWORKS (PWSID WI4390281) in Montello, WI is listed as a CWS water system covering about 1,329 people. The same extract lists 3 health-based violation records spanning 1994-2025. Those 3 health-based rows for MONTELLO WATERWORKS cover contaminants such as Groundwater Rule, LEAD AND COPPER RULE REVISIONS, Lead and Copper Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
MONTELLO WATERWORKS has 3 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 3 distinct EPA contaminant codes appear in this system's record, including Groundwater Rule, LEAD AND COPPER RULE REVISIONS, Lead and Copper Rule. Recorded violations span 1994–2025. Day-to-day primacy enforcement for this system runs through the Wisconsin drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Wisconsin state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- WI4390281
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Montello, WI
- Population Served
- 1,329
- Health Violations
- Yes (3)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Groundwater Rule | 1 | 1 |
| LEAD AND COPPER RULE REVISIONS | 1 | 1 |
| Lead and Copper Rule | 1 | 1 |
Violation History (3)
| Contaminant | Health | Date |
|---|---|---|
| Groundwater Rule | Yes | Apr 29, 2025 |
| LEAD AND COPPER RULE REVISIONS | Yes | Oct 17, 2024 |
| Lead and Copper Rule | Yes | Jul 1, 1994 |
Frequently Asked Questions
What does EPA SDWIS list for MONTELLO WATERWORKS?
How many people does MONTELLO WATERWORKS serve?
What violations does MONTELLO WATERWORKS have?
What contaminants have been found in MONTELLO WATERWORKS water?
Compare beyond Wisconsin
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest MONTELLO WATERWORKS on cumulative violation count (3) and EPA-reported population served (1,329). Violation-count peers include Mohegan Tribal Utility Authority, Tesuque Pueblo, Pojoaque South. Population peers include PROVIDENCE WATER AUTHORITY, FAIRCREST WATER ASSOCIATION, SUMMERFIELD WATER SYSTEM.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
MONTELLO WATERWORKS (WI4390281) is drawn from EPA SDWIS. Nearby county systems in this extract include FEDERAL CORRECTIONAL INSTITUTION; LILY MEADOWS ASSISTED LIVING. Health-based rows (3 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.