WaterVerge

Is Bacavi, AZ Tap Water Safe to Drink?

Graded B+, with 7 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓

1K residents served 1 water system PWSID: 090400687
Overall Score
82.2 / 100
Violations
7 active
Last Updated
May 2026
Source
Groundwater
#106 of 292 in Arizona Top 45% nationally
Native American
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
B+GRADE
Water Quality Grade
82.2/100
waterverge.com
B+ 82.2/100

Bacavi, AZ — Water Quality Report

Bacavi's drinking water received a grade of B+ (82.2 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,147 residents using groundwater.

Lead levels were measured at 5.0 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 52 violations on record, including 0 health-based violations. 7 remain unresolved.

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

What to know about Bacavi's water

Bacavi ranks #106 out of 292 cities in Arizona for water quality, placing it mid-range in the state.

Bacavi 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, Bacavi may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

Quality Breakdown

Water quality score

See methodology →
82.2 out of 100 Grade B+
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
34.2/45
B
Historical violation record including health-based and monitoring violations.
Lead & Copper
18/20
A
Lead at 5.0 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
8/10
B
Monitoring and reporting compliance with EPA regulations.
Source Risk
5/5
A
Water source: Groundwater.
Water Safety

Is Bacavi, AZ water safe to drink?

Concerns Identified

Bacavi's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (82.2/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,147 residents using groundwater (wells).

7
Active Violations
5.0 ppb
Lead (90th %ile)
8 events
Disaster History

Recent water quality updates for Bacavi

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

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Bacavi's water quality assessment. Grade: B+ (82.2/100).

Violation
1 drinking water violation recorded

Contaminants: Revised Total Coliform Rule.

Violation
2 drinking water violations recorded

Contaminants: TTHM, Total Haloacetic Acids (HAA5).

Violation
2 drinking water violations recorded

Contaminants: Total Haloacetic Acids (HAA5), TTHM.

Disaster
SEVERE STORMS AND FLOODING

Federal disaster declaration (FEMA DR-4620). Flood event — may have impacted local water infrastructure.

Disaster
HURRICANE KATRINA EVACUATION

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 Bacavi's water supply.

Lead Within Limits
Detected: 5.0 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Violation history

Bacavi's water system has 52 total violations on record, including 0 health-based violations. 7 remain unresolved. 5 violations were issued in the last 5 years.

RPTMRMONOther
Most recent violations:
Aug 2025 Revised Total Coliform Rule Open
Jan 2024 TTHM Resolved
Jan 2024 Total Haloacetic Acids (HAA5) Resolved
Jan 2023 Total Haloacetic Acids (HAA5) Resolved
Jan 2023 TTHM Resolved

Flood & environmental risk

Navajo County has experienced 8 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.

SEVERE STORMS AND FLOODING
Flood FEMA DR-4620
HURRICANE KATRINA EVACUATION
Hurricane FEMA DR-3241
SEVERE STORMS, TORNADOES & FLOODING
Flood FEMA DR-977

Where does Bacavi's water come from?

Bacavi's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,147 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.

What Bacavi residents can do

Install a water filter

Recommended: NSF-certified water filter. This addresses the specific contaminants found in Bacavi's water.

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.

Flush your taps

Run cold water for 30 seconds before drinking, especially in the morning. Lead and copper leach from household plumbing when water sits in pipes.

Monitor alerts during storms

Bacavi'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.

Contaminant Alerts

Top contaminants to know

View all ↓
Lead (90th percentile)
Inorganic / Heavy Metal
Safe
5.0 ppb
EPA Action Level: 15 ppb · 33% of limit
Safe Level
Compliance Record

Violation summary

52
Total violations
0
Health-based
7
Active / unresolved
Aug 2025
Most recent violation
Compliance Record

Violations & advisories

52 Total
7 Active
0 Health-based
45 Resolved
4 SNC
Violations by category
Total Coliform Rule
13
Inorganic Chemicals
10
Nitrate Rule
8
Stage 2 Disinfectants and Disinfection Byproducts Rule
4
Consumer Confidence Rule
4
Aug 2025 Active
Revised Total Coliform Rule
Reporting
Reporting 0
Jan 2020 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Jul 2008 Active
Consumer Confidence Rule
Other Violation 0
Jul 2002 Active
Consumer Confidence Rule
Other Violation 0
Jul 2001 Active
Consumer Confidence Rule
Other Violation 0
Jul 2000 Active
Consumer Confidence Rule
Other Violation 0
Active
Compliance Violation
Monitoring 0
Jan 2024 Resolved
TTHM
Monitoring & Reporting
SNC Monitoring & Reporting Resolved Dec 2024
Jan 2024 Resolved
Total Haloacetic Acids (HAA5)
Monitoring & Reporting
SNC Monitoring & Reporting Resolved Dec 2024
Jan 2023 Resolved
Total Haloacetic Acids (HAA5)
Monitoring & Reporting
SNC Monitoring & Reporting Resolved Dec 2023
Jan 2023 Resolved
TTHM
Monitoring & Reporting
SNC Monitoring & Reporting Resolved Dec 2023
Jan 2020 Resolved
Nitrate
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2020
Jul 2016 Resolved
Revised Total Coliform Rule
Monitoring
Monitoring Resolved Jul 2016
Mar 2015 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Mar 2015
May 2014 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved May 2014
Dec 2013 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2013
Jul 2013 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Jul 2013
Jan 2008 Resolved
Nitrate
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2008
Jan 2008 Resolved
Combined Uranium
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2013
Jan 2006 Resolved
Nitrate
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2006
Showing 20 of 52 violations
Environmental Risk

Flood & disaster history

8
Declared disasters
Sep 2021
Most recent
Flood
Most common type

Navajo County has experienced 8 federally declared disasters since 1970. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.

Sep 2021
SEVERE STORMS AND FLOODING
Flood FEMA #4620
Sep 2005
HURRICANE KATRINA EVACUATION
Hurricane FEMA #3241
Jan 1993
SEVERE STORMS, TORNADOES & FLOODING
Flood FEMA #977
Oct 1983
SEVERE STORMS & FLOODING
Flood FEMA #691
Feb 1980
SEVERE STORMS & FLOODING
Flood FEMA #614
Dec 1978
SEVERE STORMS & FLOODING
Flood FEMA #570

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 5.0 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 0.0 ppb from 1995 (5.0 ppb) to 2025 (5.0 ppb).
Infrastructure

Water source & infrastructure

Primary Source
Groundwater
Operator
Native American
Population Served
1,147
Water Systems
1
Water Source

Where Bacavi's water comes from

Groundwater

Bacavi'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 1,147 people through 1 water system.

Infrastructure

Water systems serving Bacavi

System Name PWSID Population Source
Bacavi Village 090400687 1,147 GW
Regional Comparison

How Bacavi compares

Full Arizona rankings →

Bacavi's score of 82.2/100 is above the average of 42/100 among major Arizona cities. It outscores 10 of 10 nearby cities.

Bacavi (this city)
82.2
Phoenix
37.5
Tucson
38.1
Mesa
40.6
Chandler
40.5
Gilbert
34.8
Arizona avg
42
City Profile

About Bacavi, AZ

Wikipedia →

Hotevilla-Bacavi is a census-designated place (CDP) in Navajo County, Arizona, United States, on the Hopi Reservation. The population was 957 at the 2010 census.

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Frequently asked questions

Is Bacavi, AZ tap water safe to drink?

Bacavi's water quality earned a grade of B+ (82.2/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #106 out of 292 cities tested in Arizona.

What contaminants are in Bacavi's water?

Lead was measured at 5.0 ppb (90th percentile). 52 violations are on record.

How is Bacavi'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 Bacavi?

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

Where does Bacavi's water come from?

Bacavi's water is sourced from Groundwater. The city has 1 water system serving approximately 1,147 residents.

Is Bacavi's groundwater at risk of contamination?

Bacavi 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 52 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 Bacavi's water compare to other cities?

Bacavi ranks #106 out of 292 cities in Arizona (better than 64% of state cities) and #7133 out of 15744 cities nationally (55th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Bacavi's small water system affect quality?

Bacavi's system serves approximately 1,147 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 52 violations on record.