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Community Water System · PWS AZ0412015

Kino Ranch 2

Nogales, Arizona 85621 - drinking water served from groundwater sources to 109 people, tracked in EPA SDWIS and UCMR5.

109
People served
287
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 287 drinking-water violations at Kino Ranch 2, 3% of them health-based - above the Arizona per-system average.

287
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
109
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Kino Ranch 2

Kino Ranch 2 is a local-owned community water system that delivers drinking water to 109 residents in Nogales, Arizona (Santa Cruz County) through 56 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 287 total violations for this system , of which 8 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 234 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 31 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%).

Kino Ranch 2's 287 violations sit above 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
109
Total Violations
287
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
56
County
Santa Cruz
School/Daycare
No
MCL Violations
1
Monitoring Violations
234
Treatment Tech Violations
7

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 31 2015
Chlorine MR 30 2025
Consumer Confidence Rule Other 24 2018
Revised Total Coliform Rule RPT 8 2020
Revised Total Coliform Rule MON 7 2019
Lead and Copper Rule MR 6 2021
Nitrate MR 5 2006
trans-1,2-Dichloroethylene MR 4 2015
Carbon tetrachloride MR 4 2015
1,2-Dichloropropane MR 4 2015
Trichloroethylene MR 4 2015
Toluene MR 4 2015
Ethylbenzene MR 4 2015
cis-1,2-Dichloroethylene MR 4 2015
Total Haloacetic Acids (HAA5) MR 4 2012
TTHM MR 4 2012
DICHLOROMETHANE MR 4 2015
o-Dichlorobenzene MR 4 2015
p-Dichlorobenzene MR 4 2015
1,1-Dichloroethylene MR 4 2015
1,2-Dichloroethane MR 4 2015
1,1,1-Trichloroethane MR 4 2015
1,1,2-Trichloroethane MR 4 2015
CHLOROBENZENE MR 4 2015
Benzene MR 4 2015
Styrene MR 4 2015
Public Notice Other 4 2024
LEAD AND COPPER RULE REVISIONS RPT 4 2024
LEAD AND COPPER RULE REVISIONS TT 4 2024
Tetrachloroethylene MR 4 2015

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 Kino Ranch 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 AZ0412015 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 Kino Ranch 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
2025 Chlorine MR 30 SDWIS / AZ0412015 / 0999
2024 Public Notice Other 4 SDWIS / AZ0412015 / 7500
2024 LEAD AND COPPER RULE REVISIONS RPT 4 SDWIS / AZ0412015 / 5200
2024 LEAD AND COPPER RULE REVISIONS TT 4 SDWIS / AZ0412015 / 5200
2021 Lead and Copper Rule MR 6 SDWIS / AZ0412015 / 5000
2020 Revised Total Coliform Rule RPT 8 SDWIS / AZ0412015 / 8000
2019 Revised Total Coliform Rule MON 7 SDWIS / AZ0412015 / 8000
2018 Consumer Confidence Rule Other 24 SDWIS / AZ0412015 / 7000
2016 Revised Total Coliform Rule TT 3 SDWIS / AZ0412015 / 8000
2016 E. COLI MR 2 SDWIS / AZ0412015 / 3014
2015 Coliform (TCR) MR 31 SDWIS / AZ0412015 / 3100
2015 trans-1,2-Dichloroethylene MR 4 SDWIS / AZ0412015 / 2979
2015 Carbon tetrachloride MR 4 SDWIS / AZ0412015 / 2982
2015 1,2-Dichloropropane MR 4 SDWIS / AZ0412015 / 2983
2015 Trichloroethylene MR 4 SDWIS / AZ0412015 / 2984

How Kino Ranch 2 Compares

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

Metric Kino Ranch 2 Arizona avg Federal benchmark
Total violations 287 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 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 109 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 Kino Ranch 2 water safe to drink? ▼
Kino Ranch 2 (PWS ID: AZ0412015) has 287 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 109 people using Groundwater sources.
How many people does Kino Ranch 2 serve? ▼
Kino Ranch 2 serves 109 people in Nogales, Arizona. It is a Local-owned system using Groundwater water sources with 56 service connections.
What type of violations does Kino Ranch 2 have? ▼
Kino Ranch 2 has 287 total violations: 8 health-based violations (MCL exceedances or treatment failures), 234 monitoring/reporting violations, and 7 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Kino Ranch 2 water? ▼
No PFAS testing data is available for Kino Ranch 2 under the EPA's UCMR5 monitoring program.
What water source does Kino Ranch 2 use? ▼
Kino Ranch 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.
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.