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Community Water System · PWS AZ0412012

Cs Santa Cruz Water Co

Des Peres, Arizona 63131 - drinking water served from groundwater sources to 82 people, tracked in EPA SDWIS and UCMR5.

82
People served
53
EPA violations
12
Health-based
Untested
UCMR5 result

The verdict

EPA records 53 drinking-water violations at Cs Santa Cruz Water Co, 23% of them health-based - below the Arizona per-system average.

53
Total EPA violations on record
23%
Health-based (MCL / treatment failure)
82
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Cs Santa Cruz Water Co

Cs Santa Cruz Water Co is a private-owned community water system that delivers drinking water to 82 residents in Des Peres, Arizona (Santa Cruz County) through 32 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 53 total violations for this system , of which 12 (23%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 24 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 LEAD AND COPPER RULE REVISIONS, recorded in 4 violations (TT, health-based). 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%).

Cs Santa Cruz Water Co's 53 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
82
Total Violations
53
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
32
County
Santa Cruz
School/Daycare
No
MCL Violations
4
Monitoring Violations
24
Treatment Tech Violations
8

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
LEAD AND COPPER RULE REVISIONS TT 4 2024
Groundwater Rule TT 4 2021
Public Notice Other 4 2024
Revised Total Coliform Rule MCL 4 2021
LEAD AND COPPER RULE REVISIONS RPT 4 2024
Revised Total Coliform Rule MON 3 2021
Gross Alpha, Excl. Radon and U MR 3 1986
Revised Total Coliform Rule RPT 2 2024
Chromium MR 2 1988
Barium MR 2 1988
Nitrate MR 2 1988
Arsenic MR 2 1988
Mercury MR 2 1988
Selenium MR 2 1988
Cadmium MR 2 1988
Fluoride MR 2 1988
Total Haloacetic Acids (HAA5) MR 2 2023

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 Cs Santa Cruz Water Co.

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 AZ0412012 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 Cs Santa Cruz Water Co 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 TT 4 SDWIS / AZ0412012 / 5200
2024 Public Notice Other 4 SDWIS / AZ0412012 / 7500
2024 LEAD AND COPPER RULE REVISIONS RPT 4 SDWIS / AZ0412012 / 5200
2024 Revised Total Coliform Rule RPT 2 SDWIS / AZ0412012 / 8000
2023 Total Haloacetic Acids (HAA5) MR 2 SDWIS / AZ0412012 / 2456
2021 Groundwater Rule TT 4 SDWIS / AZ0412012 / 0700
2021 Revised Total Coliform Rule MCL 4 SDWIS / AZ0412012 / 8000
2021 Revised Total Coliform Rule MON 3 SDWIS / AZ0412012 / 8000
1988 Chromium MR 2 SDWIS / AZ0412012 / 1020
1988 Barium MR 2 SDWIS / AZ0412012 / 1010
1988 Nitrate MR 2 SDWIS / AZ0412012 / 1040
1988 Arsenic MR 2 SDWIS / AZ0412012 / 1005
1988 Mercury MR 2 SDWIS / AZ0412012 / 1035
1988 Selenium MR 2 SDWIS / AZ0412012 / 1045
1988 Cadmium MR 2 SDWIS / AZ0412012 / 1015

How Cs Santa Cruz Water Co Compares

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

Metric Cs Santa Cruz Water Co Arizona avg Federal benchmark
Total violations 53 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 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 82 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 Cs Santa Cruz Water Co water safe to drink? ▼
Cs Santa Cruz Water Co (PWS ID: AZ0412012) has 53 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 82 people using Groundwater sources.
How many people does Cs Santa Cruz Water Co serve? ▼
Cs Santa Cruz Water Co serves 82 people in Des Peres, Arizona. It is a Private-owned system using Groundwater water sources with 32 service connections.
What type of violations does Cs Santa Cruz Water Co have? ▼
Cs Santa Cruz Water Co has 53 total violations: 12 health-based violations (MCL exceedances or treatment failures), 24 monitoring/reporting violations, and 8 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Cs Santa Cruz Water Co water? ▼
No PFAS testing data is available for Cs Santa Cruz Water Co under the EPA's UCMR5 monitoring program.
What water source does Cs Santa Cruz Water Co use? ▼
Cs Santa Cruz Water Co 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.