WaterVerge

Is Narbona Pass, Sheep Springs, AZ Tap Water Safe to Drink?

Graded A, with 2 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓

862 residents served 1 water system PWSID: NN3503031
Overall Score
94.2 / 100
Violations
2 active
Last Updated
May 2026
Source
Groundwater
#7 of 292 in Arizona Top 4% nationally
Native American
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
AGRADE
Water Quality Grade
94.2/100
waterverge.com
A 94.2/100

Narbona Pass, Sheep Springs, AZ — Water Quality Report

Narbona Pass, Sheep Springs's drinking water received a grade of A (94.2 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 862 residents using groundwater.

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 47 violations on record, including 0 health-based violations. 2 remain unresolved.

Data last updated: May 2026 · Source: EPA SDWIS, UCMR 5
Analysis

What to know about Narbona Pass, Sheep Springs's water

Narbona Pass, Sheep Springs ranks #7 out of 292 cities in Arizona for water quality, placing it one of the best in the state.

Narbona Pass, Sheep Springs relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.

As a small community water system, Narbona Pass, Sheep Springs may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

Quality Breakdown

Water quality score

See methodology →
94.2 out of 100 Grade A
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
42.2/45
A
Historical violation record including health-based and monitoring violations.
Lead & Copper
20/20
A
Lead at 1.0 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
10/10
A
Monitoring and reporting compliance with EPA regulations.
Source Risk
5/5
A
Water source: Groundwater.
Water Safety

Is Narbona Pass, Sheep Springs, AZ water safe to drink?

Use Caution

Narbona Pass, Sheep Springs's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (94.2/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 862 residents using groundwater (wells).

2
Active Violations
1.0 ppb
Lead (90th %ile)

Recent water quality updates for Narbona Pass, Sheep Springs

A timeline of significant water quality events, violations, and data updates.

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Narbona Pass, Sheep Springs's water quality assessment. Grade: A (94.2/100).

Violation
2 drinking water violations recorded

Contaminants: Total Haloacetic Acids (HAA5), TTHM.

Violation
1 drinking water violation recorded

Contaminants: Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation
1 drinking water violation recorded

Contaminants: Coliform (TCR).

Key contaminant findings

Based on the most recent EPA sampling data for Narbona Pass, Sheep Springs's water supply.

Lead Within Limits
Detected: 1.0 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Violation history

Narbona Pass, Sheep Springs's water system has 47 total violations on record, including 0 health-based violations. 2 remain unresolved.

MR
Most recent violations:
Jan 2020 Total Haloacetic Acids (HAA5) Resolved
Jan 2020 TTHM Resolved
Oct 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule Open
Dec 2012 Coliform (TCR) Resolved
Nov 2012 Coliform (TCR) Resolved

Where does Narbona Pass, Sheep Springs's water come from?

Narbona Pass, Sheep Springs's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 862 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.

What Narbona Pass, Sheep Springs residents can do

Request your utility's CCR

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.

Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.

Contaminant Alerts

Top contaminants to know

View all ↓
Lead (90th percentile)
Inorganic / Heavy Metal
Safe
1.0 ppb
EPA Action Level: 15 ppb · 7% of limit
Safe Level
Compliance Record

Violation summary

47
Total violations
0
Health-based
2
Active / unresolved
Jan 2020
Most recent violation
Compliance Record

Violations & advisories

47 Total
2 Active
0 Health-based
45 Resolved
Violations by category
Synthetic Organic Chemicals
28
Inorganic Chemicals
10
Stage 2 Disinfectants and Disinfection Byproducts Rule
3
Total Coliform Rule
2
Nitrate Rule
1
Oct 2013 Active
Stage 2 Disinfectants and Disinfection Byproducts Rule
Monitoring & Reporting
Monitoring & Reporting 0
Active
Compliance Violation
Monitoring 0
Jan 2020 Resolved
Total Haloacetic Acids (HAA5)
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2020
Jan 2020 Resolved
TTHM
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2020
Dec 2012 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2012
Nov 2012 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Nov 2012
Jan 2010 Resolved
Nitrite
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
HEXACHLOROBENZENE
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
Benzo(a)pyrene
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
Total Polychlorinated Biphenyls (PCB)
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
Arsenic
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
Barium
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
Cadmium
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
Chromium
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
CYANIDE
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
Mercury
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
Antimony, Total
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
Beryllium, Total
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
Thallium, Total
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Jan 2008 Resolved
BHC-GAMMA
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2010
Showing 20 of 47 violations

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 1.0 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

Lead level trend (90th percentile)

EPA action level: 15 ppb
Lead has decreased by 4.0 ppb from 2001 (5.0 ppb) to 2025 (1.0 ppb).
Contaminant Rankings

See how Narbona Pass, Sheep Springs compares by contaminant

Explore where Narbona Pass, Sheep Springs ranks among all Arizona cities for specific contaminants.

Infrastructure

Water source & infrastructure

Primary Source
Groundwater
Operator
Native American
Population Served
862
Water Systems
1
Water Source

Where Narbona Pass, Sheep Springs's water comes from

Groundwater

Narbona Pass, Sheep Springs's drinking water is drawn from underground aquifers through wells.

Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.

Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.

The system is operated by native american ownership and serves approximately 862 people through 1 water system.

Infrastructure

Water systems serving Narbona Pass, Sheep Springs

System Name PWSID Population Source
Narbona Pass NTUA NN3503031 862 GW
Regional Comparison

How Narbona Pass, Sheep Springs compares

Full Arizona rankings →

Narbona Pass, Sheep Springs's score of 94.2/100 is above the average of 42/100 among major Arizona cities. It outscores 10 of 10 nearby cities.

Narbona Pass, Sheep Springs (this city)
94.2
Phoenix
37.5
Tucson
38.1
Mesa
40.6
Chandler
40.5
Gilbert
34.8
Arizona avg
42
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Frequently asked questions

Is Narbona Pass, Sheep Springs, AZ tap water safe to drink?

Narbona Pass, Sheep Springs's water quality earned a grade of A (94.2/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #7 out of 292 cities tested in Arizona.

What contaminants are in Narbona Pass, Sheep Springs's water?

Lead was measured at 1.0 ppb (90th percentile). 47 violations are on record.

How is Narbona Pass, Sheep Springs'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 Narbona Pass, Sheep Springs?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Narbona Pass, Sheep Springs's water come from?

Narbona Pass, Sheep Springs's water is sourced from Groundwater. The city has 1 water system serving approximately 862 residents.

Is Narbona Pass, Sheep Springs's groundwater at risk of contamination?

Narbona Pass, Sheep Springs uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 47 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.

How does Narbona Pass, Sheep Springs's water compare to other cities?

Narbona Pass, Sheep Springs ranks #7 out of 292 cities in Arizona (better than 98% of state cities) and #595 out of 15744 cities nationally (96th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Narbona Pass, Sheep Springs's small water system affect quality?

Narbona Pass, Sheep Springs's system serves approximately 862 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 47 violations on record.