Is Teec Nos Pos, AZ Tap Water Safe to Drink?
Graded B+, with 9 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
83.3/100
waterverge.com Teec Nos Pos, AZ — Water Quality Report
Teec Nos Pos's drinking water received a grade of B+ (83.3 out of 100), indicating good water quality. The city's 2 water systems serve approximately 1,052 residents using purchased surface water.
Lead levels were measured at 1.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 114 violations on record, including 5 health-based violations. 9 remain unresolved.
What to know about Teec Nos Pos's water
Teec Nos Pos ranks #100 out of 292 cities in Arizona for water quality, placing it mid-range in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Teec Nos Pos may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Teec Nos Pos, AZ water safe to drink?
Teec Nos Pos's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (83.3/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 1,052 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Teec Nos Pos
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Teec Nos Pos's water quality assessment. Grade: B+ (83.3/100).
Contaminants: Nitrate, Nitrite.
Contaminants: Revised Total Coliform Rule.
Contaminants: Revised Total Coliform Rule.
Federal disaster declaration (FEMA DR-4620). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3241). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Teec Nos Pos's water supply.
Well within EPA limits.
Violation history
Teec Nos Pos's water system has 114 total violations on record, including 5 health-based violations. 9 remain unresolved. 4 violations were issued in the last 5 years.
Flood & environmental risk
Apache County has experienced 6 federally declared disasters since 1970. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.
Where does Teec Nos Pos's water come from?
Teec Nos Pos's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 2 water systems serving approximately 1,052 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment.
What Teec Nos Pos residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Teec Nos Pos's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Teec Nos Pos's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Flood & disaster history
Apache County has experienced 6 federally declared disasters since 1970. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 1.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Teec Nos Pos compares by contaminant
Explore where Teec Nos Pos ranks among all Arizona cities for specific contaminants.
Water source & infrastructure
Where Teec Nos Pos's water comes from
Teec Nos Pos's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by native american ownership and serves approximately 1,052 people through 2 water systems.
Water systems serving Teec Nos Pos
| System Name | PWSID | Population | Source |
|---|---|---|---|
| Teec Nos Pos NTUA | NN0403055 | 752 | SWP |
| Teec Nos Pos Community Boarding School BIA | NN0432010 | 300 | GW |
How Teec Nos Pos compares
Full Arizona rankings →Teec Nos Pos's score of 83.3/100 is above the average of 42/100 among major Arizona cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Arizona rankings →About Teec Nos Pos, AZ
Learn more about your water
Guides and resources related to Teec Nos Pos's water quality findings.
Frequently asked questions
Is Teec Nos Pos, AZ tap water safe to drink?
Teec Nos Pos's water quality earned a grade of B+ (83.3/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #100 out of 292 cities tested in Arizona.
What contaminants are in Teec Nos Pos's water?
Lead was measured at 1.0 ppb (90th percentile). 114 violations are on record.
How is Teec Nos Pos's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Teec Nos Pos?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Teec Nos Pos's water come from?
Teec Nos Pos's water is sourced from Purchased surface water. The city has 2 water systems serving approximately 1,052 residents.
What health violations has Teec Nos Pos's water system had?
Teec Nos Pos has 5 health-based violations on record. The most recent violation was recorded in January 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 9 violations remain unresolved.
How does Teec Nos Pos's water compare to other cities?
Teec Nos Pos ranks #100 out of 292 cities in Arizona (better than 66% of state cities) and #6505 out of 15744 cities nationally (59th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.