States → Arizona

Community Water System · PWS AZ0410046

Metropolitan Dwid - E&t System

Tucson, Arizona 85704 - drinking water served from groundwater sources to 880 people, tracked in EPA SDWIS and UCMR5.

Compiled by PlainWater Editorial, Drinking Water Quality Editorial Team · May 15, 2026

880
People served: 101
EPA violations: 0
Health-based: Untested
UCMR5 result

The verdict

EPA records 101 drinking-water violations at Metropolitan Dwid - E&t System - below the Arizona per-system average.

101
Total EPA violations on record: 0%
Health-based (MCL / treatment failure): 880
People served by this system: N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Metropolitan Dwid - E&t System

Metropolitan Dwid - E&t System is a private-owned community water system that delivers drinking water to 880 residents in Tucson, Arizona (Pima County) through 358 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 101 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 88 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 Consumer Confidence Rule, recorded in 9 violations (Other). 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%).

Metropolitan Dwid - E&t System's 101 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

880

Total Violations

101

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Community
Owner Type: Private
Connections: 358
County: Pima
School/Daycare: No
MCL Violations: 0
Monitoring Violations: 88
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Consumer Confidence Rule	Other	9	2012
Coliform (TCR)	MR	8	2013
Chlorine	MR	8	2021
TTHM	MR	6	2024
Total Haloacetic Acids (HAA5)	MR	6	2024
Nitrate	MR	5	2006
1,2-Dichloropropane	MR	2	2001
Trichloroethylene	MR	2	2001
1,1,2-Trichloroethane	MR	2	2001
Tetrachloroethylene	MR	2	2001
CHLOROBENZENE	MR	2	2001
Toluene	MR	2	2001
Ethylbenzene	MR	2	2001
Styrene	MR	2	2001
1,2,4-Trichlorobenzene	MR	2	2001
Xylenes, Total	MR	2	2001
p-Dichlorobenzene	MR	2	2001
1,1-Dichloroethylene	MR	2	2001
1,2-Dichloroethane	MR	2	2001
1,1,1-Trichloroethane	MR	2	2001
Carbon tetrachloride	MR	2	2001
Benzene	MR	2	2001
Lead and Copper Rule	MR	2	2007
o-Dichlorobenzene	MR	2	2001
trans-1,2-Dichloroethylene	MR	2	2001
Gross Alpha, Excl. Radon and U	MR	2	2004
cis-1,2-Dichloroethylene	MR	2	2001
DICHLOROMETHANE	MR	2	2001
Combined Uranium	MR	1	2004
Radium-226	MR	1	2004

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 Metropolitan Dwid - E&t System.

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 AZ0410046 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 Metropolitan Dwid - E&t System 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	TTHM	MR	6	SDWIS / AZ0410046 / 2950
2024	Total Haloacetic Acids (HAA5)	MR	6	SDWIS / AZ0410046 / 2456
2021	Chlorine	MR	8	SDWIS / AZ0410046 / 0999
2013	Coliform (TCR)	MR	8	SDWIS / AZ0410046 / 3100
2012	Consumer Confidence Rule	Other	9	SDWIS / AZ0410046 / 7000
2007	Lead and Copper Rule	MR	2	SDWIS / AZ0410046 / 5000
2006	Nitrate	MR	5	SDWIS / AZ0410046 / 1040
2004	Gross Alpha, Excl. Radon and U	MR	2	SDWIS / AZ0410046 / 4000
2004	Combined Uranium	MR	1	SDWIS / AZ0410046 / 4006
2004	Radium-226	MR	1	SDWIS / AZ0410046 / 4020
2004	Radium-228	MR	1	SDWIS / AZ0410046 / 4030
2004	Combined Radium (-226 and -228)	MR	1	SDWIS / AZ0410046 / 4010
2001	1,2-Dichloropropane	MR	2	SDWIS / AZ0410046 / 2983
2001	Trichloroethylene	MR	2	SDWIS / AZ0410046 / 2984
2001	1,1,2-Trichloroethane	MR	2	SDWIS / AZ0410046 / 2985

How Metropolitan Dwid - E&t System Compares

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

Metric	Metropolitan Dwid - E&t System	Arizona avg	Federal benchmark
Total violations	101	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	880	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 Metropolitan Dwid - E&t System water safe to drink? ▼

Metropolitan Dwid - E&t System (PWS ID: AZ0410046) has 101 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 880 people using Groundwater sources.

How many people does Metropolitan Dwid - E&t System serve? ▼

Metropolitan Dwid - E&t System serves 880 people in Tucson, Arizona. It is a Private-owned system using Groundwater water sources with 358 service connections.

What type of violations does Metropolitan Dwid - E&t System have? ▼

Metropolitan Dwid - E&t System has 101 total violations: 0 health-based violations (MCL exceedances or treatment failures), 88 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Metropolitan Dwid - E&t System water? ▼

No PFAS testing data is available for Metropolitan Dwid - E&t System under the EPA's UCMR5 monitoring program.

What water source does Metropolitan Dwid - E&t System use? ▼

Metropolitan Dwid - E&t System 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.

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.