LEROY SANITARY DISTRICT 1
PWSID: WI1140155 · Mayville, WI · Serves 320 people
According to EPA Safe Drinking Water Information System (SDWIS), LEROY SANITARY DISTRICT 1 (PWSID WI1140155) in Mayville, WI is listed as a CWS water system covering about 320 people. The same extract lists 8 health-based violation records spanning 2019-2024. Those 8 health-based rows for LEROY SANITARY DISTRICT 1 cover contaminants such as Combined Radium (-226 and -228), Groundwater Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
LEROY SANITARY DISTRICT 1 has 8 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 Combined Radium (-226 and -228), Groundwater Rule. 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)
- WI1140155
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Mayville, WI
- Population Served
- 320
- Health Violations
- Yes (8)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Combined Radium (-226 and -228) | 6 | 6 |
| Groundwater Rule | 2 | 2 |
Violation History (8)
| Contaminant | Health | Date |
|---|---|---|
| Combined Radium (-226 and -228) | Yes | Jul 1, 2024 |
| Combined Radium (-226 and -228) | Yes | Jul 1, 2024 |
| Combined Radium (-226 and -228) | Yes | Jul 1, 2024 |
| Combined Radium (-226 and -228) | Yes | Apr 1, 2024 |
| Combined Radium (-226 and -228) | Yes | Apr 1, 2024 |
| Combined Radium (-226 and -228) | Yes | Apr 1, 2024 |
| Groundwater Rule | Yes | Sep 1, 2019 |
| Groundwater Rule | Yes | Sep 1, 2019 |
Frequently Asked Questions
What does EPA SDWIS list for LEROY SANITARY DISTRICT 1?
How many people does LEROY SANITARY DISTRICT 1 serve?
What violations does LEROY SANITARY DISTRICT 1 have?
What contaminants have been found in LEROY SANITARY DISTRICT 1 water?
Compare beyond Wisconsin
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest LEROY SANITARY DISTRICT 1 on cumulative violation count (8) and EPA-reported population served (320). Violation-count peers include Mashantucket Pequot Water System, San Ildefonso Pueblo, TOWAOC WATER SYSTEM.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
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About This Data
LEROY SANITARY DISTRICT 1 (WI1140155) is drawn from EPA SDWIS. Nearby county systems in this extract include BEAVER DAM WATER UTILITY; HORICON WATERWORKS; LOMIRA WATERWORKS; JUNEAU WATERWORKS. Health-based rows (8 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.