Basin City Water Sewer District
PWSID: WA5304461 · Mesa, WA · Serves 1,740 people
According to EPA Safe Drinking Water Information System (SDWIS), Basin City Water Sewer District (PWSID WA5304461) in Mesa, WA is listed as a CWS water system covering about 1,740 people. The same extract lists 2 health-based violation records spanning 2025-2025. Those 2 health-based rows for Basin City Water Sewer District cover contaminants such as Nitrate; they remain historical EPA registry entries, not a current compliance or drinkability score.
Basin City Water Sewer District 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. 1 distinct EPA contaminant code appears in this system's record, including Nitrate. Recorded violations span 2025–2025. 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)
- WA5304461
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Mesa, WA
- Population Served
- 1,740
- Health Violations
- Yes (2)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Nitrate | 2 | 2 |
Frequently Asked Questions
What does EPA SDWIS list for Basin City Water Sewer District?
How many people does Basin City Water Sewer District serve?
What violations does Basin City Water Sewer District have?
What contaminants have been found in Basin City Water Sewer District water?
Compare beyond Washington
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest Basin City Water Sewer District on cumulative violation count (2) and EPA-reported population served (1,740). Violation-count peers include SAINT REGIS MOHAWK TRIBE, REDBY/RED LAKE, Kickapoo Traditional Tribe. Population peers include LAC VIEUX DESERT, Upper Moenkopi, WOODVILLE 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
Explore More
About This Data
Basin City Water Sewer District (WA5304461) is drawn from EPA SDWIS. Nearby county systems in this extract include PASCO WATER DEPARTMENT; CONNELL CITY OF; Great Basin Water Burbank; Great Basin Water Kiona. 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.