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Transient Non-Community Water System · PWS AZ0415499

Main Street Market #640

The Woodlands, Arizona 77381 - drinking water served from groundwater sources to 600 people, tracked in EPA SDWIS and UCMR5.

600
People served
105
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 105 drinking-water violations at Main Street Market #640 - below the Arizona per-system average.

105
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
600
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Main Street Market #640

Main Street Market #640 is a public/private-owned transient non-community water system that delivers drinking water to 600 residents in The Woodlands, Arizona (La Paz County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 105 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 97 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 65 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%).

Main Street Market #640's 105 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
600
Total Violations
105
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Public/Private
Connections
1
County
La Paz
School/Daycare
No
MCL Violations
0
Monitoring Violations
97
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 65 2013
Nitrate MR 14 2021
Revised Total Coliform Rule RPT 6 2023
Revised Total Coliform Rule MON 4 2025
Barium MR 2 1988
Cadmium MR 2 1988
Mercury MR 2 1988
Fluoride MR 2 1988
Selenium MR 2 1988
Chromium MR 2 1988
Arsenic MR 2 1988

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 Main Street Market #640.

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 AZ0415499 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 Main Street Market #640 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 Revised Total Coliform Rule MON 4 SDWIS / AZ0415499 / 8000
2023 Revised Total Coliform Rule RPT 6 SDWIS / AZ0415499 / 8000
2021 Nitrate MR 14 SDWIS / AZ0415499 / 1040
2013 Coliform (TCR) MR 65 SDWIS / AZ0415499 / 3100
1988 Barium MR 2 SDWIS / AZ0415499 / 1010
1988 Cadmium MR 2 SDWIS / AZ0415499 / 1015
1988 Mercury MR 2 SDWIS / AZ0415499 / 1035
1988 Fluoride MR 2 SDWIS / AZ0415499 / 1025
1988 Selenium MR 2 SDWIS / AZ0415499 / 1045
1988 Chromium MR 2 SDWIS / AZ0415499 / 1020
1988 Arsenic MR 2 SDWIS / AZ0415499 / 1005

How Main Street Market #640 Compares

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

Metric Main Street Market #640 Arizona avg Federal benchmark
Total violations 105 153.3 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 600 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 Main Street Market #640 water safe to drink? ▼
Main Street Market #640 (PWS ID: AZ0415499) has 105 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 600 people using Groundwater sources.
How many people does Main Street Market #640 serve? ▼
Main Street Market #640 serves 600 people in The Woodlands, Arizona. It is a Public/Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Main Street Market #640 have? ▼
Main Street Market #640 has 105 total violations: 0 health-based violations (MCL exceedances or treatment failures), 97 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Main Street Market #640 water? ▼
No PFAS testing data is available for Main Street Market #640 under the EPA's UCMR5 monitoring program.
What water source does Main Street Market #640 use? ▼
Main Street Market #640 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.