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SILVERBELL MINING, LLC

PWS ID: AZ0420006 · MARANA, Arizona 85653

SILVERBELL MINING, LLC serves 200 people in MARANA, Arizona using Groundwater water sources. It has 151 recorded EPA violations, including 6 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: SILVERBELL MINING, LLC

SILVERBELL MINING, LLC is a public/private-owned non-transient non-community water system that delivers drinking water to 200 residents in MARANA, Arizona (Pima County) through 38 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 151 total violations for this system , of which 6 (4%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 142 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 17 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Arizona, EPA tracks 1,493 public water systems serving 7,322,166 people, with 228,944 cumulative violations and 15,663 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 153.3 violations. SILVERBELL MINING, LLC's 151 violations sit below the Arizona average. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
200
Total Violations
151
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Public/Private
Connections
38
County
Pima
School/Daycare
No
MCL Violations
6
Monitoring Violations
142
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 17 2015
DICHLOROMETHANE MR 16 2003
Chlorine MR 13 2023
Nitrate MR 7 2000
Coliform (TCR) MCL 6 1999
TTHM MR 4 2023
Total Haloacetic Acids (HAA5) MR 3 2023
Revised Total Coliform Rule RPT 3 2024
BHC-GAMMA MR 2 2001
Di(2-ethylhexyl) adipate MR 2 2001
Heptachlor MR 2 2001
LASSO MR 2 2001
Endrin MR 2 2001
Chlordane MR 2 2001
1,2,4-Trichlorobenzene MR 2 2000
cis-1,2-Dichloroethylene MR 2 2000
Xylenes, Total MR 2 2000
o-Dichlorobenzene MR 2 2000
p-Dichlorobenzene MR 2 2000
1,1-Dichloroethylene MR 2 2000
trans-1,2-Dichloroethylene MR 2 2000
Carbon tetrachloride MR 2 2000
1,2-Dichloropropane MR 2 2000
Trichloroethylene MR 2 2000
1,1,2-Trichloroethane MR 2 2000
CHLOROBENZENE MR 2 2000
Benzene MR 2 2000
Toluene MR 2 2000
Styrene MR 2 2000
1,2-Dichloroethane MR 2 2000

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for SILVERBELL MINING, LLC.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID AZ0420006 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Arizona Drinking Water Authority

Arizona DEQ — Drinking Water Program is the primacy agency that licenses and inspects SILVERBELL MINING, LLC under EPA-delegated authority.

Open AZ regulator portal

Source: Arizona DEQ — Drinking Water Program

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2024 Revised Total Coliform Rule RPT 3 SDWIS / AZ0420006 / 8000
2023 Chlorine MR 13 SDWIS / AZ0420006 / 0999
2023 TTHM MR 4 SDWIS / AZ0420006 / 2950
2023 Total Haloacetic Acids (HAA5) MR 3 SDWIS / AZ0420006 / 2456
2015 Coliform (TCR) MR 17 SDWIS / AZ0420006 / 3100
2003 DICHLOROMETHANE MR 16 SDWIS / AZ0420006 / 2964
2001 BHC-GAMMA MR 2 SDWIS / AZ0420006 / 2010
2001 Di(2-ethylhexyl) adipate MR 2 SDWIS / AZ0420006 / 2035
2001 Heptachlor MR 2 SDWIS / AZ0420006 / 2065
2001 LASSO MR 2 SDWIS / AZ0420006 / 2051
2001 Endrin MR 2 SDWIS / AZ0420006 / 2005
2001 Chlordane MR 2 SDWIS / AZ0420006 / 2959
2001 Simazine MR 2 SDWIS / AZ0420006 / 2037
2001 Di(2-ethylhexyl) phthalate MR 2 SDWIS / AZ0420006 / 2039
2001 Hexachlorocyclopentadiene MR 2 SDWIS / AZ0420006 / 2042

How SILVERBELL MINING, LLC Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric SILVERBELL MINING, LLC Arizona avg Federal benchmark
Total violations 151 153.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 6 10.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 95.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 200 4,904 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,493 regulated public water systems in Arizona.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is SILVERBELL MINING, LLC water safe to drink? ▼
SILVERBELL MINING, LLC (PWS ID: AZ0420006) has 151 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 200 people using Groundwater sources.
How many people does SILVERBELL MINING, LLC serve? ▼
SILVERBELL MINING, LLC serves 200 people in MARANA, Arizona. It is a Public/Private-owned system using Groundwater water sources with 38 service connections.
What type of violations does SILVERBELL MINING, LLC have? ▼
SILVERBELL MINING, LLC has 151 total violations: 6 health-based violations (MCL exceedances or treatment failures), 142 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in SILVERBELL MINING, LLC water? ▼
No PFAS testing data is available for SILVERBELL MINING, LLC under the EPA's UCMR5 monitoring program.
What water source does SILVERBELL MINING, LLC use? ▼
SILVERBELL MINING, LLC uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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