Mattawa City of
PWSID: WA5352000 · Mattawa, WA · Serves 5,370 people
According to EPA Safe Drinking Water Information System (SDWIS), Mattawa City of (PWSID WA5352000) in Mattawa, WA is listed as a CWS water system covering about 5,370 people. The same extract lists 4 health-based violation records spanning 2024-2024. Those 4 health-based rows for Mattawa City of cover contaminants such as Revised Total Coliform Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
Mattawa City of has 4 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 Revised Total Coliform Rule. Recorded violations span 2024–2024. 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)
- WA5352000
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Mattawa, WA
- Population Served
- 5,370
- Health Violations
- Yes (4)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Revised Total Coliform Rule | 4 | 4 |
Violation History (4)
| Contaminant | Health | Date |
|---|---|---|
| Revised Total Coliform Rule | Yes | Jun 1, 2024 |
| Revised Total Coliform Rule | Yes | Jun 1, 2024 |
| Revised Total Coliform Rule | Yes | Jun 1, 2024 |
| Revised Total Coliform Rule | Yes | Jun 1, 2024 |
Frequently Asked Questions
What does EPA SDWIS list for Mattawa City of?
How many people does Mattawa City of serve?
What violations does Mattawa City of have?
What contaminants have been found in Mattawa City of water?
Compare beyond Washington
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest Mattawa City of on cumulative violation count (4) and EPA-reported population served (5,370). Violation-count peers include Santo Domingo Pueblo, Isleta Eastside, PARSHALL-LUCKY MOUND. Population peers include LAWCO - DEQUINCY WATER SYSTEM, CITY OF BRADY WATER SYSTEM, GODDARD, CITY OF.
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
Mattawa City of (WA5352000) is drawn from EPA SDWIS. Nearby county systems in this extract include MOSES LAKE CITY OF; EPHRATA WATER DEPARTMENT; QUINCY WATER DEPARTMENT CITY OF; WARDEN CITY OF. Health-based rows (4 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.