PlainWater
States → Arizona

Community Water System · PWS AZ0402101

Sierra Vista Mh Village

Sierra Vista, Arizona 85635 - drinking water served from groundwater sources to 328 people, tracked in EPA SDWIS and UCMR5.

328
People served
118
EPA violations
7
Health-based
Untested
UCMR5 result

The verdict

EPA records 118 drinking-water violations at Sierra Vista Mh Village, 6% of them health-based - below the Arizona per-system average.

118
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
328
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Sierra Vista Mh Village

Sierra Vista Mh Village is a public/private-owned community water system that delivers drinking water to 328 residents in Sierra Vista, Arizona (Cochise County) through 266 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 118 total violations for this system , of which 7 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 99 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 16 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%).

Sierra Vista Mh Village's 118 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
328
Total Violations
118
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Public/Private
Connections
266
County
Cochise
School/Daycare
No
MCL Violations
3
Monitoring Violations
99
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 16 2015
Lead and Copper Rule MR 10 2023
LEAD AND COPPER RULE REVISIONS RPT 4 2024
LEAD AND COPPER RULE REVISIONS TT 4 2024
Coliform (TCR) MCL 3 2001
o-Dichlorobenzene MR 2 2002
cis-1,2-Dichloroethylene MR 2 2002
1,2-Dichloroethane MR 2 2002
1,1,1-Trichloroethane MR 2 2002
Carbon tetrachloride MR 2 2002
Trichloroethylene MR 2 2002
1,1,2-Trichloroethane MR 2 2002
CHLOROBENZENE MR 2 2002
Ethylbenzene MR 2 2002
Styrene MR 2 2002
Xylenes, Total MR 2 2002
1,1-Dichloroethylene MR 2 2002
1,2-Dichloropropane MR 2 2002
Consumer Confidence Rule Other 2 2010
Public Notice Other 2 2024
trans-1,2-Dichloroethylene MR 2 2002
Benzene MR 2 2002
Toluene MR 2 2002
DICHLOROMETHANE MR 2 2002
1,2,4-Trichlorobenzene MR 2 2002
Tetrachloroethylene MR 2 2002
p-Dichlorobenzene MR 2 2002
Nitrate MR 1 1998
Endrin MR 1 1998
BHC-GAMMA 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 Sierra Vista Mh Village.

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 AZ0402101 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 Sierra Vista Mh Village 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 / AZ0402101 / 5200
2024 LEAD AND COPPER RULE REVISIONS TT 4 SDWIS / AZ0402101 / 5200
2024 Public Notice Other 2 SDWIS / AZ0402101 / 7500
2023 Lead and Copper Rule MR 10 SDWIS / AZ0402101 / 5000
2015 Coliform (TCR) MR 16 SDWIS / AZ0402101 / 3100
2010 Consumer Confidence Rule Other 2 SDWIS / AZ0402101 / 7000
2004 Gross Alpha, Excl. Radon and U MR 1 SDWIS / AZ0402101 / 4000
2004 Combined Uranium MR 1 SDWIS / AZ0402101 / 4006
2002 o-Dichlorobenzene MR 2 SDWIS / AZ0402101 / 2968
2002 cis-1,2-Dichloroethylene MR 2 SDWIS / AZ0402101 / 2380
2002 1,2-Dichloroethane MR 2 SDWIS / AZ0402101 / 2980
2002 1,1,1-Trichloroethane MR 2 SDWIS / AZ0402101 / 2981
2002 Carbon tetrachloride MR 2 SDWIS / AZ0402101 / 2982
2002 Trichloroethylene MR 2 SDWIS / AZ0402101 / 2984
2002 1,1,2-Trichloroethane MR 2 SDWIS / AZ0402101 / 2985

How Sierra Vista Mh Village Compares

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

Metric Sierra Vista Mh Village Arizona avg Federal benchmark
Total violations 118 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 7 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 328 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 Sierra Vista Mh Village water safe to drink? ▼
Sierra Vista Mh Village (PWS ID: AZ0402101) has 118 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 328 people using Groundwater sources.
How many people does Sierra Vista Mh Village serve? ▼
Sierra Vista Mh Village serves 328 people in Sierra Vista, Arizona. It is a Public/Private-owned system using Groundwater water sources with 266 service connections.
What type of violations does Sierra Vista Mh Village have? ▼
Sierra Vista Mh Village has 118 total violations: 7 health-based violations (MCL exceedances or treatment failures), 99 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Sierra Vista Mh Village water? ▼
No PFAS testing data is available for Sierra Vista Mh Village under the EPA's UCMR5 monitoring program.
What water source does Sierra Vista Mh Village use? ▼
Sierra Vista Mh Village 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.