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Community Water System · PWS AZ0412040

Trujillo Trail Dwid

Tubac, Arizona 85646 - drinking water served from groundwater sources to 75 people, tracked in EPA SDWIS and UCMR5.

75
People served
48
EPA violations
14
Health-based
Untested
UCMR5 result

The verdict

EPA records 48 drinking-water violations at Trujillo Trail Dwid, 29% of them health-based - below the Arizona per-system average.

48
Total EPA violations on record
29%
Health-based (MCL / treatment failure)
75
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Trujillo Trail Dwid

Trujillo Trail Dwid is a private-owned community water system that delivers drinking water to 75 residents in Tubac, Arizona (Santa Cruz County) through 37 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 48 total violations for this system , of which 14 (29%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 25 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 18 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%).

Trujillo Trail Dwid's 48 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
75
Total Violations
48
Health-Based Violations
14
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
37
County
Santa Cruz
School/Daycare
No
MCL Violations
13
Monitoring Violations
25
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 18 2015
Arsenic MCL 13 2013
Arsenic MR 4 2014
Consumer Confidence Rule Other 4 2014
Revised Total Coliform Rule RPT 4 2024
E. COLI MR 2 2025
Lead and Copper Rule MR 1 2019
Revised Total Coliform Rule TT 1 2025

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 Trujillo Trail Dwid.

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 AZ0412040 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 Trujillo Trail Dwid 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
2025 E. COLI MR 2 SDWIS / AZ0412040 / 3014
2025 Revised Total Coliform Rule TT 1 SDWIS / AZ0412040 / 8000
2024 Revised Total Coliform Rule RPT 4 SDWIS / AZ0412040 / 8000
2019 Lead and Copper Rule MR 1 SDWIS / AZ0412040 / 5000
2015 Coliform (TCR) MR 18 SDWIS / AZ0412040 / 3100
2014 Arsenic MR 4 SDWIS / AZ0412040 / 1005
2014 Consumer Confidence Rule Other 4 SDWIS / AZ0412040 / 7000
2013 Arsenic MCL 13 SDWIS / AZ0412040 / 1005

How Trujillo Trail Dwid Compares

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

Metric Trujillo Trail Dwid Arizona avg Federal benchmark
Total violations 48 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 14 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 75 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 Trujillo Trail Dwid water safe to drink? ▼
Trujillo Trail Dwid (PWS ID: AZ0412040) has 48 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 75 people using Groundwater sources.
How many people does Trujillo Trail Dwid serve? ▼
Trujillo Trail Dwid serves 75 people in Tubac, Arizona. It is a Private-owned system using Groundwater water sources with 37 service connections.
What type of violations does Trujillo Trail Dwid have? ▼
Trujillo Trail Dwid has 48 total violations: 14 health-based violations (MCL exceedances or treatment failures), 25 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Trujillo Trail Dwid water? ▼
No PFAS testing data is available for Trujillo Trail Dwid under the EPA's UCMR5 monitoring program.
What water source does Trujillo Trail Dwid use? ▼
Trujillo Trail Dwid uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
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.