MCCOY LAKE
PWSID: 105300021 · Wellpinit, WA · Serves 325 people
According to EPA Safe Drinking Water Information System (SDWIS), MCCOY LAKE (PWSID 105300021) in Wellpinit, WA is listed as a CWS water system covering about 325 people. The same extract lists 8 health-based violation records spanning 2018-2025. Those 8 health-based rows for MCCOY LAKE cover contaminants such as Groundwater Rule, LEAD AND COPPER RULE REVISIONS; they remain historical EPA registry entries, not a current compliance or drinkability score.
MCCOY LAKE 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 Groundwater Rule, LEAD AND COPPER RULE REVISIONS. Recorded violations span 2018–2025. Day-to-day primacy enforcement for this system runs through the Washington 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 Washington state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- 105300021
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Wellpinit, WA
- Population Served
- 325
- Health Violations
- Yes (8)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Groundwater Rule | 7 | 7 |
| LEAD AND COPPER RULE REVISIONS | 1 | 1 |
Violation History (8)
| Contaminant | Health | Date |
|---|---|---|
| Groundwater Rule | Yes | Jan 5, 2025 |
| Groundwater Rule | Yes | Jan 5, 2025 |
| Groundwater Rule | Yes | Jan 5, 2025 |
| Groundwater Rule | Yes | Jan 5, 2025 |
| Groundwater Rule | Yes | Jan 5, 2025 |
| LEAD AND COPPER RULE REVISIONS | Yes | Oct 17, 2024 |
| Groundwater Rule | Yes | Jun 1, 2018 |
| Groundwater Rule | Yes | Jun 1, 2018 |
Frequently Asked Questions
What does EPA SDWIS list for MCCOY LAKE?
How many people does MCCOY LAKE serve?
What violations does MCCOY LAKE have?
What contaminants have been found in MCCOY LAKE water?
Compare beyond Washington
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest MCCOY LAKE on cumulative violation count (8) and EPA-reported population served (325). 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
Explore More
About This Data
MCCOY LAKE (105300021) is drawn from EPA SDWIS. Nearby county systems in this extract include STEVENS CO PUD - SUNCREST; STEVENS CO PUD - DEER LAKE; CHEWELAH WATER DEPT SOUTH; STEVENS CO PUD - LOON LAKE. 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.