MAY VALLEY WA
PWSID: CO0150800 · Wiley, CO · Serves 1,500 people
According to EPA Safe Drinking Water Information System (SDWIS), MAY VALLEY WA (PWSID CO0150800) in Wiley, CO is listed as a CWS water system covering about 1,500 people. The same extract lists 440 health-based violation records spanning 2014-2025. Those 440 health-based rows for MAY VALLEY WA cover contaminants such as Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U; they remain historical EPA registry entries, not a current compliance or drinkability score.
MAY VALLEY WA has 440 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), Gross Alpha, Excl. Radon and U. Recorded violations span 2014–2025. Day-to-day primacy enforcement for this system runs through the Colorado 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 Colorado state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- CO0150800
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Wiley, CO
- Population Served
- 1,500
- Health Violations
- Yes (440)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Combined Radium (-226 and -228) | 248 | 248 |
| Gross Alpha, Excl. Radon and U | 192 | 192 |
Violation History (440)
Frequently Asked Questions
What does EPA SDWIS list for MAY VALLEY WA?
How many people does MAY VALLEY WA serve?
What violations does MAY VALLEY WA have?
What contaminants have been found in MAY VALLEY WA water?
Compare beyond Colorado
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest MAY VALLEY WA on cumulative violation count (440) and EPA-reported population served (1,500). Violation-count peers include MAYSVILLE, BARNSDALL, WEWOKA PUBLIC WORKS AUTHORITY. Population peers include LITTLE SHELL, MISSION WATER SYSTEM, PORT SUSAN CAMP CLUB #1.
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
MAY VALLEY WA (CO0150800) is drawn from EPA SDWIS. Nearby county systems in this extract include LAS ANIMAS CITY OF; WILEY TOWN OF; MCCLAVE WA INC; FORT LYON. Health-based rows (440 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.