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SAGUARO LAKE MARINA

PWS ID: AZ0407657 · MESA, Arizona 85215

SAGUARO LAKE MARINA serves 450 people in MESA, Arizona using Surface Water water sources. It has 110 recorded EPA violations, including 9 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: SAGUARO LAKE MARINA

SAGUARO LAKE MARINA is a public/private-owned transient non-community water system that delivers drinking water to 450 residents in MESA, Arizona (Maricopa County) through 4 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 110 total violations for this system , of which 9 (8%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 94 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 Interim Enhanced Surface Water Treatment Rule, recorded in 28 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. SAGUARO LAKE MARINA's 110 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
450
Total Violations
110
Health-Based Violations
9
Water Source
Surface Water

System Details

System Type
Transient Non-Community
Owner Type
Public/Private
Connections
4
County
Maricopa
School/Daycare
No
MCL Violations
9
Monitoring Violations
94
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule MR 28 2025
Surface Water Treatment Rule MR 23 2025
Nitrate MR 15 2004
Chlorine MR 8 2008
Lead and Copper Rule MR 5 2006
TTHM MCL 5 2006
Total Haloacetic Acids (HAA5) MCL 4 2005
Cadmium MR 2 1989
Selenium MR 2 1989
Barium MR 2 1989
Fluoride MR 2 1989
Arsenic MR 2 1988
Chromium MR 2 1989
Mercury MR 2 1989
Coliform (TCR) MR 1 2003

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 SAGUARO LAKE MARINA.

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 AZ0407657 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 SAGUARO LAKE MARINA 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 Interim Enhanced Surface Water Treatment Rule MR 28 SDWIS / AZ0407657 / 0300
2025 Surface Water Treatment Rule MR 23 SDWIS / AZ0407657 / 0200
2008 Chlorine MR 8 SDWIS / AZ0407657 / 0999
2006 Lead and Copper Rule MR 5 SDWIS / AZ0407657 / 5000
2006 TTHM MCL 5 SDWIS / AZ0407657 / 2950
2005 Total Haloacetic Acids (HAA5) MCL 4 SDWIS / AZ0407657 / 2456
2004 Nitrate MR 15 SDWIS / AZ0407657 / 1040
2003 Coliform (TCR) MR 1 SDWIS / AZ0407657 / 3100
1989 Cadmium MR 2 SDWIS / AZ0407657 / 1015
1989 Selenium MR 2 SDWIS / AZ0407657 / 1045
1989 Barium MR 2 SDWIS / AZ0407657 / 1010
1989 Fluoride MR 2 SDWIS / AZ0407657 / 1025
1989 Chromium MR 2 SDWIS / AZ0407657 / 1020
1989 Mercury MR 2 SDWIS / AZ0407657 / 1035
1988 Arsenic MR 2 SDWIS / AZ0407657 / 1005

How SAGUARO LAKE MARINA Compares

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

Metric SAGUARO LAKE MARINA Arizona avg Federal benchmark
Total violations 110 153.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 9 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 450 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 SAGUARO LAKE MARINA water safe to drink? ▼
SAGUARO LAKE MARINA (PWS ID: AZ0407657) has 110 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 450 people using Surface Water sources.
How many people does SAGUARO LAKE MARINA serve? ▼
SAGUARO LAKE MARINA serves 450 people in MESA, Arizona. It is a Public/Private-owned system using Surface Water water sources with 4 service connections.
What type of violations does SAGUARO LAKE MARINA have? ▼
SAGUARO LAKE MARINA has 110 total violations: 9 health-based violations (MCL exceedances or treatment failures), 94 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in SAGUARO LAKE MARINA water? ▼
No PFAS testing data is available for SAGUARO LAKE MARINA under the EPA's UCMR5 monitoring program.
What water source does SAGUARO LAKE MARINA use? ▼
SAGUARO LAKE MARINA uses Surface Water 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.

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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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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial