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MARICOPA MOUNTAIN DWID 2

PWS ID: AZ0411322 · MARICOPA, Arizona 85139

MARICOPA MOUNTAIN DWID 2 serves 120 people in MARICOPA, Arizona using Groundwater water sources. It has 196 recorded EPA violations, including 4 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MARICOPA MOUNTAIN DWID 2

MARICOPA MOUNTAIN DWID 2 is a private-owned community water system that delivers drinking water to 120 residents in MARICOPA, Arizona (Pinal County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 196 total violations for this system , of which 4 (2%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 154 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 39 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. MARICOPA MOUNTAIN DWID 2's 196 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
120
Total Violations
196
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
1
County
Pinal
School/Daycare
No
MCL Violations
4
Monitoring Violations
154
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 39 2016
Chlorine MR 24 2013
Consumer Confidence Rule Other 21 2021
Nitrate MR 15 2006
Lead and Copper Rule MR 4 2007
TTHM MR 4 2008
Total Haloacetic Acids (HAA5) MR 4 2008
Gross Alpha, Excl. Radon and U MCL 3 1987
Gross Alpha, Excl. Radon and U MR 2 1991
Chromium MR 2 1988
Selenium MR 2 1988
Arsenic MR 2 1988
Mercury MR 2 1988
Fluoride MR 2 1988
Barium MR 2 1988
Cadmium MR 2 1988
cis-1,2-Dichloroethylene MR 1 1999
DICHLOROMETHANE MR 1 1999
p-Dichlorobenzene MR 1 1999
1,1,1-Trichloroethane MR 1 1999
Trichloroethylene MR 1 1999
1,1,2-Trichloroethane MR 1 1999
Benzene MR 1 1999
Toluene MR 1 1999
Styrene MR 1 1999
2,3,7,8-TCDD MR 1 2000
2,4-D MR 1 2000
Pentachlorophenol MR 1 2000
Atrazine MR 1 2000
Hexachlorocyclopentadiene MR 1 2000

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 MARICOPA MOUNTAIN DWID 2.

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 AZ0411322 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 MARICOPA MOUNTAIN DWID 2 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
2021 Consumer Confidence Rule Other 21 SDWIS / AZ0411322 / 7000
2016 Coliform (TCR) MR 39 SDWIS / AZ0411322 / 3100
2013 Chlorine MR 24 SDWIS / AZ0411322 / 0999
2008 TTHM MR 4 SDWIS / AZ0411322 / 2950
2008 Total Haloacetic Acids (HAA5) MR 4 SDWIS / AZ0411322 / 2456
2007 Lead and Copper Rule MR 4 SDWIS / AZ0411322 / 5000
2006 Nitrate MR 15 SDWIS / AZ0411322 / 1040
2000 2,3,7,8-TCDD MR 1 SDWIS / AZ0411322 / 2063
2000 2,4-D MR 1 SDWIS / AZ0411322 / 2105
2000 Pentachlorophenol MR 1 SDWIS / AZ0411322 / 2326
2000 Atrazine MR 1 SDWIS / AZ0411322 / 2050
2000 Hexachlorocyclopentadiene MR 1 SDWIS / AZ0411322 / 2042
2000 Picloram MR 1 SDWIS / AZ0411322 / 2040
2000 2,4,5-TP MR 1 SDWIS / AZ0411322 / 2110
2000 Di(2-ethylhexyl) phthalate MR 1 SDWIS / AZ0411322 / 2039

How MARICOPA MOUNTAIN DWID 2 Compares

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

Metric MARICOPA MOUNTAIN DWID 2 Arizona avg Federal benchmark
Total violations 196 153.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 4 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 120 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 MARICOPA MOUNTAIN DWID 2 water safe to drink? ▼
MARICOPA MOUNTAIN DWID 2 (PWS ID: AZ0411322) has 196 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 120 people using Groundwater sources.
How many people does MARICOPA MOUNTAIN DWID 2 serve? ▼
MARICOPA MOUNTAIN DWID 2 serves 120 people in MARICOPA, Arizona. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does MARICOPA MOUNTAIN DWID 2 have? ▼
MARICOPA MOUNTAIN DWID 2 has 196 total violations: 4 health-based violations (MCL exceedances or treatment failures), 154 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MARICOPA MOUNTAIN DWID 2 water? ▼
No PFAS testing data is available for MARICOPA MOUNTAIN DWID 2 under the EPA's UCMR5 monitoring program.
What water source does MARICOPA MOUNTAIN DWID 2 use? ▼
MARICOPA MOUNTAIN DWID 2 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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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial