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Transient Non-Community Water System · PWS AZ0405603

Usfs-Cnf-Arcadia

Tucson, Arizona 85701 - drinking water served from groundwater sources to 67 people, tracked in EPA SDWIS and UCMR5.

67
People served
21
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 21 drinking-water violations at Usfs-Cnf-Arcadia - below the Arizona per-system average.

21
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
67
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Usfs-Cnf-Arcadia

Usfs-Cnf-Arcadia is a federal-owned transient non-community water system that delivers drinking water to 67 residents in Tucson, Arizona (Graham County) through 5 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 21 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 15 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Nitrate, recorded in 7 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. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%).

Usfs-Cnf-Arcadia's 21 violations sit below the Arizona average.

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
67
Total Violations
21
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Federal
Connections
5
County
Graham
School/Daycare
No
MCL Violations
0
Monitoring Violations
15
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 7 2023
Revised Total Coliform Rule RPT 4 2021
Fluoride MR 1 1987
Coliform (TCR) MR 1 1991
Selenium MR 1 1987
Barium MR 1 1987
Chromium MR 1 1987
Cadmium MR 1 1987
Mercury MR 1 1987
Arsenic MR 1 1987

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 Usfs-Cnf-Arcadia.

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 AZ0405603 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 Usfs-Cnf-Arcadia 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
2023 Nitrate MR 7 SDWIS / AZ0405603 / 1040
2021 Revised Total Coliform Rule RPT 4 SDWIS / AZ0405603 / 8000
1991 Coliform (TCR) MR 1 SDWIS / AZ0405603 / 3100
1987 Fluoride MR 1 SDWIS / AZ0405603 / 1025
1987 Selenium MR 1 SDWIS / AZ0405603 / 1045
1987 Barium MR 1 SDWIS / AZ0405603 / 1010
1987 Chromium MR 1 SDWIS / AZ0405603 / 1020
1987 Cadmium MR 1 SDWIS / AZ0405603 / 1015
1987 Mercury MR 1 SDWIS / AZ0405603 / 1035
1987 Arsenic MR 1 SDWIS / AZ0405603 / 1005

How Usfs-Cnf-Arcadia Compares

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

Metric Usfs-Cnf-Arcadia Arizona avg Federal benchmark
Total violations 21 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 67 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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Usfs-Cnf-Arcadia water safe to drink? ▼
Usfs-Cnf-Arcadia (PWS ID: AZ0405603) has 21 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 67 people using Groundwater sources.
How many people does Usfs-Cnf-Arcadia serve? ▼
Usfs-Cnf-Arcadia serves 67 people in Tucson, Arizona. It is a Federal-owned system using Groundwater water sources with 5 service connections.
What type of violations does Usfs-Cnf-Arcadia have? ▼
Usfs-Cnf-Arcadia has 21 total violations: 0 health-based violations (MCL exceedances or treatment failures), 15 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Usfs-Cnf-Arcadia water? ▼
No PFAS testing data is available for Usfs-Cnf-Arcadia under the EPA's UCMR5 monitoring program.
What water source does Usfs-Cnf-Arcadia use? ▼
Usfs-Cnf-Arcadia uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.
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.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.