OCONTO WATERWORKS
PWSID: WI4430495 · Oconto, WI · Serves 4,583 people
According to EPA Safe Drinking Water Information System (SDWIS), OCONTO WATERWORKS (PWSID WI4430495) in Oconto, WI is listed as a CWS water system covering about 4,583 people. The same extract lists 2 health-based violation records spanning 2019-2024. Those 2 health-based rows for OCONTO WATERWORKS cover contaminants such as LEAD AND COPPER RULE REVISIONS, Combined Radium (-226 and -228); they remain historical EPA registry entries, not a current compliance or drinkability score.
OCONTO WATERWORKS has 2 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. 2 distinct EPA contaminant codes appear in this system's record, including LEAD AND COPPER RULE REVISIONS, Combined Radium (-226 and -228). Recorded violations span 2019–2024. 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)
- WI4430495
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Oconto, WI
- Population Served
- 4,583
- Health Violations
- Yes (2)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| LEAD AND COPPER RULE REVISIONS | 1 | 1 |
| Combined Radium (-226 and -228) | 1 | 1 |
Violation History (2)
| Contaminant | Health | Date |
|---|---|---|
| LEAD AND COPPER RULE REVISIONS | Yes | Oct 17, 2024 |
| Combined Radium (-226 and -228) | Yes | Jan 1, 2019 |
Frequently Asked Questions
What does EPA SDWIS list for OCONTO WATERWORKS?
How many people does OCONTO WATERWORKS serve?
What violations does OCONTO WATERWORKS have?
What contaminants have been found in OCONTO WATERWORKS water?
Compare beyond Wisconsin
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest OCONTO WATERWORKS on cumulative violation count (2) and EPA-reported population served (4,583). Violation-count peers include SAINT REGIS MOHAWK TRIBE, REDBY/RED LAKE, Kickapoo Traditional Tribe. Population peers include FLEMINGSBURG UTILITY SYSTEM, FLEMINGTON WATER DEPARTMENT, IVANHOE PUBLIC UTILITY DIST.
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
OCONTO WATERWORKS (WI4430495) is drawn from EPA SDWIS. Nearby county systems in this extract include OCONTO FALLS WATERWORKS; GILLETT WATERWORKS; LENA WATERWORKS; POUND WATERWORKS. Health-based rows (2 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.