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RINCON MESA LANDOWNERS

PWS ID: AZ0410199 · VAIL, Arizona 85641

RINCON MESA LANDOWNERS serves 75 people in VAIL, Arizona using Groundwater water sources. It has 165 recorded EPA violations, including 5 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: RINCON MESA LANDOWNERS

RINCON MESA LANDOWNERS is a public/private-owned community water system that delivers drinking water to 75 residents in VAIL, Arizona (Pima County) through 30 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 165 total violations for this system , of which 5 (3%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 114 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 66 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. RINCON MESA LANDOWNERS's 165 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
75
Total Violations
165
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Public/Private
Connections
30
County
Pima
School/Daycare
No
MCL Violations
1
Monitoring Violations
114
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 66 2015
Consumer Confidence Rule Other 33 2017
Lead and Copper Rule MR 5 2015
LEAD AND COPPER RULE REVISIONS RPT 4 2024
LEAD AND COPPER RULE REVISIONS TT 4 2024
Gross Alpha, Excl. Radon and U MR 3 1989
cis-1,2-Dichloroethylene MR 2 1998
p-Dichlorobenzene MR 2 1998
1,1-Dichloroethylene MR 2 1998
trans-1,2-Dichloroethylene MR 2 1998
1,1,1-Trichloroethane MR 2 1998
Carbon tetrachloride MR 2 1998
1,2-Dichloropropane MR 2 1998
Trichloroethylene MR 2 1998
Benzene MR 2 1998
Ethylbenzene MR 2 1998
Public Notice Other 2 2024
1,1,2-Trichloroethane MR 2 1998
o-Dichlorobenzene MR 2 1998
DICHLOROMETHANE MR 2 1998
CHLOROBENZENE MR 2 1998
Styrene MR 2 1998
1,2-Dichloroethane MR 2 1998
Nitrate MR 2 1999
Toluene MR 2 1998
Tetrachloroethylene MR 2 1998
Xylenes, Total MR 1 1998
Coliform (TCR) MCL 1 2006
1,2,4-Trichlorobenzene MR 1 1998

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 RINCON MESA LANDOWNERS.

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 AZ0410199 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 RINCON MESA LANDOWNERS 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 LEAD AND COPPER RULE REVISIONS RPT 4 SDWIS / AZ0410199 / 5200
2024 LEAD AND COPPER RULE REVISIONS TT 4 SDWIS / AZ0410199 / 5200
2024 Public Notice Other 2 SDWIS / AZ0410199 / 7500
2017 Consumer Confidence Rule Other 33 SDWIS / AZ0410199 / 7000
2015 Coliform (TCR) MR 66 SDWIS / AZ0410199 / 3100
2015 Lead and Copper Rule MR 5 SDWIS / AZ0410199 / 5000
2006 Coliform (TCR) MCL 1 SDWIS / AZ0410199 / 3100
1999 Nitrate MR 2 SDWIS / AZ0410199 / 1040
1998 cis-1,2-Dichloroethylene MR 2 SDWIS / AZ0410199 / 2380
1998 p-Dichlorobenzene MR 2 SDWIS / AZ0410199 / 2969
1998 1,1-Dichloroethylene MR 2 SDWIS / AZ0410199 / 2977
1998 trans-1,2-Dichloroethylene MR 2 SDWIS / AZ0410199 / 2979
1998 1,1,1-Trichloroethane MR 2 SDWIS / AZ0410199 / 2981
1998 Carbon tetrachloride MR 2 SDWIS / AZ0410199 / 2982
1998 1,2-Dichloropropane MR 2 SDWIS / AZ0410199 / 2983

How RINCON MESA LANDOWNERS Compares

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

Metric RINCON MESA LANDOWNERS Arizona avg Federal benchmark
Total violations 165 153.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 5 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is RINCON MESA LANDOWNERS water safe to drink? ▼
RINCON MESA LANDOWNERS (PWS ID: AZ0410199) has 165 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 RINCON MESA LANDOWNERS serve? ▼
RINCON MESA LANDOWNERS serves 75 people in VAIL, Arizona. It is a Public/Private-owned system using Groundwater water sources with 30 service connections.
What type of violations does RINCON MESA LANDOWNERS have? ▼
RINCON MESA LANDOWNERS has 165 total violations: 5 health-based violations (MCL exceedances or treatment failures), 114 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in RINCON MESA LANDOWNERS water? ▼
No PFAS testing data is available for RINCON MESA LANDOWNERS under the EPA's UCMR5 monitoring program.
What water source does RINCON MESA LANDOWNERS use? ▼
RINCON MESA LANDOWNERS 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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