WaterVerge

Is Stotonic, Goodyear, Gila Butte, Sweetwat, 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 ↓

3K residents served 1 water system PWSID: 090400096
Overall Score
84 / 100
Violations
7 active
Last Updated
May 2026
Source
Purchased ground water
#97 of 292 in Arizona Top 39% nationally
Native American
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
B+GRADE
Water Quality Grade
84/100
waterverge.com
B+ 84/100

Stotonic, Goodyear, Gila Butte, Sweetwat, AZ — Water Quality Report

Stotonic, Goodyear, Gila Butte, Sweetwat's drinking water received a grade of B+ (84 out of 100), indicating good water quality. The city's 1 water system serves approximately 2,566 residents using purchased ground water.

Lead levels were measured at 0.5 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 55 violations on record, including 11 health-based violations. 7 remain unresolved.

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

What to know about Stotonic, Goodyear, Gila Butte, Sweetwat's water

Stotonic, Goodyear, Gila Butte, Sweetwat ranks #97 out of 292 cities in Arizona for water quality, placing it mid-range in the state.

Stotonic, Goodyear, Gila Butte, Sweetwat purchases its water from a regional wholesaler, meaning quality depends on both the supplier's treatment and the local distribution system's condition.

As a small community water system, Stotonic, Goodyear, Gila Butte, Sweetwat may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

Quality Breakdown

Water quality score

See methodology →
84 out of 100 Grade B+
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
34/45
B
Historical violation record including health-based and monitoring violations.
Lead & Copper
20/20
A
Lead at 0.5 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: Purchased ground water.
Water Safety

Is Stotonic, Goodyear, Gila Butte, Sweetwat, AZ water safe to drink?

Concerns Identified

Stotonic, Goodyear, Gila Butte, Sweetwat's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (84/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 2,566 residents using groundwater (wells).

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

Recent water quality updates for Stotonic, Goodyear, Gila Butte, Sweetwat

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

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Stotonic, Goodyear, Gila Butte, Sweetwat's water quality assessment. Grade: B+ (84/100).

Violation
1 drinking water violation recorded

1 health-based. Contaminants: LEAD AND COPPER RULE REVISIONS.

Violation
1 drinking water violation recorded

Contaminants: Revised Total Coliform Rule.

Violation
1 drinking water violation recorded

Contaminants: Lead and Copper Rule.

Disaster
HURRICANE KATRINA EVACUATION

Federal disaster declaration (FEMA DR-3241). Hurricane event — may have impacted local water infrastructure.

Disaster
SEVERE STORMS, TORNADOES & FLOODING

Federal disaster declaration (FEMA DR-977). Flood event — may have impacted local water infrastructure.

Key contaminant findings

Based on the most recent EPA sampling data for Stotonic, Goodyear, Gila Butte, Sweetwat's water supply.

Lead Within Limits
Detected: 0.5 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Violation history

Stotonic, Goodyear, Gila Butte, Sweetwat's water system has 55 total violations on record, including 11 health-based violations. 7 remain unresolved. 3 violations were issued in the last 5 years.

TTRPTMRMCLOther
Most recent violations:
Oct 2024 LEAD AND COPPER RULE REVISIONS Open
Jun 2024 Revised Total Coliform Rule Open
Aug 2023 Lead and Copper Rule Open
Jan 2011 Arsenic Resolved
Oct 2010 Arsenic Resolved

Flood & environmental risk

Pinal County has experienced 7 federally declared disasters since 1966. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.

HURRICANE KATRINA EVACUATION
Hurricane FEMA DR-3241
SEVERE STORMS, TORNADOES & FLOODING
Flood FEMA DR-977
SEVERE STORMS & FLOODING
Flood FEMA DR-884

Where does Stotonic, Goodyear, Gila Butte, Sweetwat's water come from?

Stotonic, Goodyear, Gila Butte, Sweetwat's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 2,566 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.

What Stotonic, Goodyear, Gila Butte, Sweetwat residents can do

Install a water filter

Recommended: NSF-certified water filter. This addresses the specific contaminants found in Stotonic, Goodyear, Gila Butte, Sweetwat'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.

Monitor alerts during storms

Stotonic, Goodyear, Gila Butte, Sweetwat'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
0.5 ppb
EPA Action Level: 15 ppb · 3% of limit
Safe Level
Compliance Record

Violation summary

55
Total violations
11
Health-based
7
Active / unresolved
Oct 2024
Most recent violation
Compliance Record

Violations & advisories

55 Total
7 Active
11 Health-based
48 Resolved
Violations by category
Total Coliform Rule
17
Inorganic Chemicals
13
Arsenic Rule
8
Nitrate Rule
5
Synthetic Organic Chemicals
4
Oct 2024 Active
LEAD AND COPPER RULE REVISIONS
Treatment Technique
Health-Based Health 0
Jun 2024 Active
Revised Total Coliform Rule
Reporting
Reporting 0
Aug 2023 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Jul 2001 Active
Consumer Confidence Rule
Other Violation 0
Jul 1996 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Jan 1996 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Active
Compliance Violation
Monitoring 0
Jan 2011 Resolved
Arsenic
Max Contaminant Level
Health-Based Health Resolved Mar 2011
Oct 2010 Resolved
Arsenic
Max Contaminant Level
Health-Based Health Resolved Dec 2010
Jul 2010 Resolved
Arsenic
Max Contaminant Level
Health-Based Health Resolved Sep 2010
Apr 2010 Resolved
Arsenic
Max Contaminant Level
Health-Based Health Resolved Jun 2010
Jan 2010 Resolved
Arsenic
Max Contaminant Level
Health-Based Health Resolved Mar 2010
Oct 2009 Resolved
Arsenic
Max Contaminant Level
Health-Based Health Resolved Dec 2009
Jul 2009 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Jul 2009
Nov 2008 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Nov 2008
Jul 2008 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Jul 2008
Nov 2007 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Nov 2007
Sep 2006 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Sep 2006
May 2006 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved May 2006
Jan 2006 Resolved
Nitrate
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2006
Showing 20 of 55 violations
Environmental Risk

Flood & disaster history

7
Declared disasters
Sep 2005
Most recent
Flood
Most common type

Pinal County has experienced 7 federally declared disasters since 1966. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.

Sep 2005
HURRICANE KATRINA EVACUATION
Hurricane FEMA #3241
Jan 1993
SEVERE STORMS, TORNADOES & FLOODING
Flood FEMA #977
Dec 1990
SEVERE STORMS & FLOODING
Flood FEMA #884
Oct 1983
SEVERE STORMS & FLOODING
Flood FEMA #691
Nov 1977
SEVERE STORMS & FLOODING
Flood FEMA #540
Jul 1972
SEVERE STORMS & FLOODING
Flood FEMA #343

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 0.5 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 1.5 ppb from 2000 (2.0 ppb) to 2025 (0.5 ppb).
Contaminant Rankings

See how Stotonic, Goodyear, Gila Butte, Sweetwat compares by contaminant

Explore where Stotonic, Goodyear, Gila Butte, Sweetwat ranks among all Arizona cities for specific contaminants.

Infrastructure

Water source & infrastructure

Primary Source
Purchased Groundwater
Operator
Native American
Population Served
2,566
Water Systems
1
Water Source

Where Stotonic, Goodyear, Gila Butte, Sweetwat's water comes from

Purchased Groundwater

Stotonic, Goodyear, Gila Butte, Sweetwat purchases its water supply from a regional wholesale provider rather than treating raw water directly.

Water quality depends on both the wholesaler's treatment standards and the condition of Stotonic, Goodyear, Gila Butte, Sweetwat's local distribution pipes and storage facilities.

Purchased water systems are common in suburban areas and smaller communities that lack the infrastructure for independent treatment.

The system is operated by native american ownership and serves approximately 2,566 people through 1 water system.

Infrastructure

Water systems serving Stotonic, Goodyear, Gila Butte, Sweetwat

System Name PWSID Population Source
GRIC DPW Stotonic 090400096 2,566 GWP
Regional Comparison

How Stotonic, Goodyear, Gila Butte, Sweetwat compares

Full Arizona rankings →

Stotonic, Goodyear, Gila Butte, Sweetwat's score of 84/100 is above the average of 42/100 among major Arizona cities. It outscores 10 of 10 nearby cities.

Stotonic, Goodyear, Gila Butte, Sweetwat (this city)
84
Phoenix
37.5
Tucson
38.1
Mesa
40.6
Chandler
40.5
Gilbert
34.8
Arizona avg
42
City Profile

About Stotonic, Goodyear, Gila Butte, Sweetwat, AZ

Wikipedia →

Sacaton is a census-designated place (CDP) in Pinal County, Arizona, United States. The population was 3,254 at the 2020 census. It is the capital of the Gila River Indian Community.

Economic Profile
$29,347
Median Income
9.4%
Unemployment
Community
30
Median Age
113
People / sq mi
4.8%
College Educated
75.1%
Homeownership
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Frequently asked questions

Is Stotonic, Goodyear, Gila Butte, Sweetwat, AZ tap water safe to drink?

Stotonic, Goodyear, Gila Butte, Sweetwat's water quality earned a grade of B+ (84/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #97 out of 292 cities tested in Arizona.

What contaminants are in Stotonic, Goodyear, Gila Butte, Sweetwat's water?

Lead was measured at 0.5 ppb (90th percentile). 55 violations are on record.

How is Stotonic, Goodyear, Gila Butte, Sweetwat'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 Stotonic, Goodyear, Gila Butte, Sweetwat?

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

Where does Stotonic, Goodyear, Gila Butte, Sweetwat's water come from?

Stotonic, Goodyear, Gila Butte, Sweetwat's water is sourced from Purchased ground water. The city has 1 water system serving approximately 2,566 residents.

What health violations has Stotonic, Goodyear, Gila Butte, Sweetwat's water system had?

Stotonic, Goodyear, Gila Butte, Sweetwat has 11 health-based violations on record. The most recent violation was recorded in October 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 7 violations remain unresolved.

Is Stotonic, Goodyear, Gila Butte, Sweetwat's groundwater at risk of contamination?

Stotonic, Goodyear, Gila Butte, Sweetwat 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 55 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 Stotonic, Goodyear, Gila Butte, Sweetwat's water compare to other cities?

Stotonic, Goodyear, Gila Butte, Sweetwat ranks #97 out of 292 cities in Arizona (better than 67% of state cities) and #6146 out of 15744 cities nationally (61th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Stotonic, Goodyear, Gila Butte, Sweetwat's small water system affect quality?

Stotonic, Goodyear, Gila Butte, Sweetwat's system serves approximately 2,566 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 55 violations on record.