Twin Lakes NTUA
PWSID: NN3500261 · Ft Defiance, AZ · Serves 1,833 people
According to EPA Safe Drinking Water Information System (SDWIS), Twin Lakes NTUA (PWSID NN3500261) in Ft Defiance, AZ is listed as a CWS water system covering about 1,833 people. The same extract lists 2 health-based violation records spanning 2016-2016. Those 2 health-based rows for Twin Lakes NTUA cover contaminants such as Revised Total Coliform Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
Twin Lakes NTUA 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 Revised Total Coliform Rule. Recorded violations span 2016–2016. Day-to-day primacy enforcement for this system runs through the Arizona 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 Arizona state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- NN3500261
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Ft Defiance, AZ
- Population Served
- 1,833
- Health Violations
- Yes (2)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Revised Total Coliform Rule | 2 | 2 |
Violation History (2)
| Contaminant | Health | Date |
|---|---|---|
| Revised Total Coliform Rule | Yes | Apr 1, 2016 |
| Revised Total Coliform Rule | Yes | Apr 1, 2016 |
Frequently Asked Questions
What does EPA SDWIS list for Twin Lakes NTUA?
How many people does Twin Lakes NTUA serve?
What violations does Twin Lakes NTUA have?
What contaminants have been found in Twin Lakes NTUA water?
Compare beyond Arizona
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest Twin Lakes NTUA on cumulative violation count (2) and EPA-reported population served (1,833). Violation-count peers include SAINT REGIS MOHAWK TRIBE, REDBY/RED LAKE, Kickapoo Traditional Tribe. Population peers include LEETONIA VILLAGE PWS, NORTH MILAM WSC, CARRIAGE HILLS.
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
Twin Lakes NTUA (NN3500261) is drawn from EPA SDWIS. Nearby county systems in this extract include Farmington Rural-Shiprock-Beclabito NTUA; Fort Defiance-Window Rock-St Michaels NTUA; Chinle-Many Farms-Del Muerto NTUA; Tuba City NTUA. 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.