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DESERT SKY DWID

PWS ID: AZ0415122 · TUCSON, Arizona 85754

DESERT SKY DWID serves 70 people in TUCSON, Arizona using Groundwater water sources. It has 269 recorded EPA violations, including 14 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: DESERT SKY DWID

DESERT SKY DWID is a private-owned community water system that delivers drinking water to 70 residents in TUCSON, Arizona (La Paz County) through 31 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 269 total violations for this system , of which 14 (5%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 238 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 Revised Total Coliform Rule, recorded in 10 violations (RPT). 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. DESERT SKY DWID's 269 violations sit above 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
70
Total Violations
269
Health-Based Violations
14
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
31
County
La Paz
School/Daycare
No
MCL Violations
12
Monitoring Violations
238
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule RPT 10 2022
BHC-GAMMA MR 6 2018
Methoxychlor MR 6 2018
Toxaphene MR 6 2018
Dalapon MR 6 2018
Glyphosate MR 6 2018
Di(2-ethylhexyl) adipate MR 6 2018
OXAMYL MR 6 2018
Di(2-ethylhexyl) phthalate MR 6 2018
Picloram MR 6 2018
Hexachlorocyclopentadiene MR 6 2018
Atrazine MR 6 2018
2,3,7,8-TCDD MR 6 2018
Heptachlor epoxide MR 6 2018
2,4-D MR 6 2018
HEXACHLOROBENZENE MR 6 2018
Benzo(a)pyrene MR 6 2018
Pentachlorophenol MR 6 2018
ETHYLENE DIBROMIDE MR 6 2018
Diquat MR 6 2018
Endothall MR 6 2018
Simazine MR 6 2018
Carbofuran MR 6 2018
Heptachlor MR 6 2018
1,2-DIBROMO-3-CHLOROPROPANE MR 6 2018
Chlordane MR 6 2018
Fluoride MCL 6 2025
Dinoseb MR 6 2018
2,4,5-TP MR 6 2018
Endrin MR 6 2018

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 DESERT SKY 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 AZ0415122 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 DESERT SKY 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 Fluoride MCL 6 SDWIS / AZ0415122 / 1025
2025 Public Notice Other 5 SDWIS / AZ0415122 / 7500
2025 Arsenic MCL 3 SDWIS / AZ0415122 / 1005
2025 Groundwater Rule TT 2 SDWIS / AZ0415122 / 0700
2022 Revised Total Coliform Rule RPT 10 SDWIS / AZ0415122 / 8000
2021 Nitrate MCL 3 SDWIS / AZ0415122 / 1040
2019 Revised Total Coliform Rule MON 4 SDWIS / AZ0415122 / 8000
2019 Lead and Copper Rule MR 2 SDWIS / AZ0415122 / 5000
2018 BHC-GAMMA MR 6 SDWIS / AZ0415122 / 2010
2018 Methoxychlor MR 6 SDWIS / AZ0415122 / 2015
2018 Toxaphene MR 6 SDWIS / AZ0415122 / 2020
2018 Dalapon MR 6 SDWIS / AZ0415122 / 2031
2018 Glyphosate MR 6 SDWIS / AZ0415122 / 2034
2018 Di(2-ethylhexyl) adipate MR 6 SDWIS / AZ0415122 / 2035
2018 OXAMYL MR 6 SDWIS / AZ0415122 / 2036

How DESERT SKY DWID Compares

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

Metric DESERT SKY DWID Arizona avg Federal benchmark
Total violations 269 153.3 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 70 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 DESERT SKY DWID water safe to drink? ▼
DESERT SKY DWID (PWS ID: AZ0415122) has 269 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 70 people using Groundwater sources.
How many people does DESERT SKY DWID serve? ▼
DESERT SKY DWID serves 70 people in TUCSON, Arizona. It is a Private-owned system using Groundwater water sources with 31 service connections.
What type of violations does DESERT SKY DWID have? ▼
DESERT SKY DWID has 269 total violations: 14 health-based violations (MCL exceedances or treatment failures), 238 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in DESERT SKY DWID water? ▼
No PFAS testing data is available for DESERT SKY DWID under the EPA's UCMR5 monitoring program.
What water source does DESERT SKY DWID use? ▼
DESERT SKY 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.

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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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