PlainWater
States → Arizona

Community Water System · PWS AZ0402013

Northern Sunrise WC Coronado

Sierra Vista, Arizona 85635 - drinking water served from groundwater sources to 553 people, tracked in EPA SDWIS and UCMR5.

553
People served
160
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 160 drinking-water violations at Northern Sunrise WC Coronado, 2% of them health-based - above the Arizona per-system average.

160
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
553
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Northern Sunrise WC Coronado

Northern Sunrise WC Coronado is a private-owned community water system that delivers drinking water to 553 residents in Sierra Vista, Arizona (Cochise County) through 228 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 160 total violations for this system , of which 3 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 130 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 53 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%).

Northern Sunrise WC Coronado's 160 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
553
Total Violations
160
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
228
County
Cochise
School/Daycare
No
MCL Violations
3
Monitoring Violations
130
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 53 2012
Consumer Confidence Rule Other 10 2015
Nitrate MR 5 2005
Coliform (TCR) MCL 3 2006
Endothall MR 3 2001
Gross Alpha, Excl. Radon and U MR 3 1987
Chlorine MR 2 2022
1,2,4-Trichlorobenzene MR 2 2002
1,1-Dichloroethylene MR 2 2002
1,2-Dichloroethane MR 2 2002
Benzene MR 2 2002
cis-1,2-Dichloroethylene MR 2 2002
Xylenes, Total MR 2 2002
o-Dichlorobenzene MR 2 2002
1,1,2-Trichloroethane MR 2 2002
Toluene MR 2 2002
Styrene MR 2 2002
DICHLOROMETHANE MR 2 2002
Ethylbenzene MR 2 2002
Carbon tetrachloride MR 2 2002
trans-1,2-Dichloroethylene MR 2 2002
1,1,1-Trichloroethane MR 2 2002
p-Dichlorobenzene MR 1 1998
BHC-GAMMA MR 1 1998
Methoxychlor MR 1 1998
Dalapon MR 1 1998
Diquat MR 1 1998
Glyphosate MR 1 1998
Di(2-ethylhexyl) adipate MR 1 1998
OXAMYL 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 Northern Sunrise WC Coronado.

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 AZ0402013 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 Northern Sunrise WC Coronado 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
2022 Chlorine MR 2 SDWIS / AZ0402013 / 0999
2015 Consumer Confidence Rule Other 10 SDWIS / AZ0402013 / 7000
2012 Coliform (TCR) MR 53 SDWIS / AZ0402013 / 3100
2006 Coliform (TCR) MCL 3 SDWIS / AZ0402013 / 3100
2006 Lead and Copper Rule MR 1 SDWIS / AZ0402013 / 5000
2005 Nitrate MR 5 SDWIS / AZ0402013 / 1040
2002 1,2,4-Trichlorobenzene MR 2 SDWIS / AZ0402013 / 2378
2002 1,1-Dichloroethylene MR 2 SDWIS / AZ0402013 / 2977
2002 1,2-Dichloroethane MR 2 SDWIS / AZ0402013 / 2980
2002 Benzene MR 2 SDWIS / AZ0402013 / 2990
2002 cis-1,2-Dichloroethylene MR 2 SDWIS / AZ0402013 / 2380
2002 Xylenes, Total MR 2 SDWIS / AZ0402013 / 2955
2002 o-Dichlorobenzene MR 2 SDWIS / AZ0402013 / 2968
2002 1,1,2-Trichloroethane MR 2 SDWIS / AZ0402013 / 2985
2002 Toluene MR 2 SDWIS / AZ0402013 / 2991

How Northern Sunrise WC Coronado Compares

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

Metric Northern Sunrise WC Coronado Arizona avg Federal benchmark
Total violations 160 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 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 553 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 Northern Sunrise WC Coronado water safe to drink? ▼
Northern Sunrise WC Coronado (PWS ID: AZ0402013) has 160 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 553 people using Groundwater sources.
How many people does Northern Sunrise WC Coronado serve? ▼
Northern Sunrise WC Coronado serves 553 people in Sierra Vista, Arizona. It is a Private-owned system using Groundwater water sources with 228 service connections.
What type of violations does Northern Sunrise WC Coronado have? ▼
Northern Sunrise WC Coronado has 160 total violations: 3 health-based violations (MCL exceedances or treatment failures), 130 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Northern Sunrise WC Coronado water? ▼
No PFAS testing data is available for Northern Sunrise WC Coronado under the EPA's UCMR5 monitoring program.
What water source does Northern Sunrise WC Coronado use? ▼
Northern Sunrise WC Coronado 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.