Current Health-Based Noncompliance AZ 7 HEALTH-BASED VIOLATIONS ON RECORD

Big Park Water Company

EPA ID: AZ0413012 ยท 7,392 people served ยท 1 ZIP code

ZipCheckup's reading of EPA records for Big Park Water Company (AZ0413012): 2 violations recorded with unresolved status in the SDWIS data used. Open violations at Big Park Water Company number 2 in the EPA compliance data, for a system that serves about 7,392 people. An open status describes how each violation is logged in the federal record; it is not a measurement of what comes out of any individual tap.

Data: EPA SDWIS

D ยท 50
Avg Safety Score
7,392
People Served
1
ZIP Code Served
197
Violations (since 2021)
Groundwater
Water Source
Below the reporting limit
Most recent lead 90th percentile on record (monitoring period ending 2024-12-31)
Zone 2
County Radon Potential ยท Moderate
26
Contaminants Flagged
$658K
Median Home Value in ZIP Codes Served

Service Area Map

Coverage area for Big Park Water Company Source: EPA SDWIS service area boundaries.

Service area boundary - average Home Safety grade of mapped ZIPs: D

Demographics of ZIP Codes Served

$80,304
Median Household Income
6,560
Population of ZIP Codes Served (Census)
38%
Disadvantaged Population
60th
Poverty Percentile
60th
Energy Burden Percentile
33%
Pre-1986 Housing

The ZIP codes associated with Big Park Water Company have a median household income of $80,304 and about 6,560 residents live in those ZIP codes (Census; not the number of people this system supplies).

Environmental Justice Note: On average, 38% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.

๐Ÿ’ง Where Does Your Water Come From?

Groundwater

Big Park Water Company's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.

Elevated Risk
Source Contamination Risk
60th
Wastewater Discharge Proximity
40th
Superfund Site Proximity

Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points.

Infrastructure Risk

29 yr
Estimated pipe age (modeled from housing age)
Copper
Likely pipe material (modeled)
41 yr
Est. Remaining Life
Moderate Wear
Decay Status
Installed 41% of expected lifespan used (estimate) End of life

PFAS in ZIP Codes This System Serves

PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 7 detections recorded. 2 detections are above the level of a federal PFAS MCL (4 ppt for PFOA and PFOS), with compliance required from 2029.

Health concern: Exposure to certain PFAS has been associated with some cancers and with immune and developmental effects; effects differ by compound. Many PFAS break down very slowly in the environment.
Recommended filter: An activated carbon filter certified under NSF/ANSI 53 or a reverse osmosis system certified under NSF/ANSI 58 for the PFAS listed in its certification. Find the right filter โ†’

Comparable Water Systems

Similar-sized systems in Arizona

City of Page
7,420 people
B 7 violations
City of Globe
7,536 people
C 8 violations
City of Buckeye
7,008 people
6 violations
City of Eloy
7,903 people
C 23 violations
2 violations

Estimated Remediation Costs

Average estimated costs across ZIP codes served by this system

Water Filtration PFAS Treatment
Water Filtration $600
PFAS Treatment $600
Total Estimated Cost $1,200

Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.

Cost of Inaction

Illustrative per-household cost scenario based on stated assumptions:

Estimated Healthcare Costs $1,500

Annual per household (ZipCheckup estimate)

Estimated Property Value Decline $32,915

5% of median home value (ZipCheckup estimate)

PFAS Exposure - Lifetime Cost $1,000

Per person (emerging research est.)

Estimated Cumulative Cost Per Household

5 years
$24,125
10 years
$48,250
20 years
$96,500

Compare: Estimated remediation cost is $1,200 (one-time) vs. $48,250 in estimated inaction costs over 10 years.

Individual costs vary by household size, property, and health factors. These estimates are for awareness, not financial advice.

System Overview

Big Park Water Company (EPA ID: AZ0413012) is a community water system in Arizona that serves approximately 7,392 people from groundwater sources.

This system serves ZIP code 86351 in Sedona.

ZIP-Area Home Safety Context: D (50/100)

This is the average Home Safety Score for 1 of 1 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.

Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.

Violation History

1 current health-based noncompliance record in the accepted 2026Q2 snapshot.

Status breakdown for accepted records with record years 2021-2026: 195 resolved, 0 archived, 0 addressed, and 2 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.

Recent Violations

Date Contaminant Type Status
December 28, 2025 E. COLI Non-health-based Resolved
December 13, 2025 E. COLI Non-health-based Resolved
November 9, 2025 Revised Total Coliform Rule Health-based Unaddressed (current)
October 2, 2025 Consumer Confidence Rule Non-health-based Unaddressed (current)
October 1, 2025 Arsenic Non-health-based Resolved
October 1, 2025 Arsenic Non-health-based Resolved
June 22, 2025 Public Notice Non-health-based Resolved
April 1, 2025 1,2,4-Trichlorobenzene Non-health-based Resolved
April 1, 2025 cis-1,2-Dichloroethylene Non-health-based Resolved
April 1, 2025 Xylenes, Total Non-health-based Resolved
April 1, 2025 DICHLOROMETHANE Non-health-based Resolved
April 1, 2025 o-Dichlorobenzene Non-health-based Resolved
April 1, 2025 p-Dichlorobenzene Non-health-based Resolved
April 1, 2025 Vinyl chloride Non-health-based Resolved
April 1, 2025 1,1-Dichloroethylene Non-health-based Resolved
April 1, 2025 trans-1,2-Dichloroethylene Non-health-based Resolved
April 1, 2025 1,2-Dichloroethane Non-health-based Resolved
April 1, 2025 1,1,1-Trichloroethane Non-health-based Resolved
April 1, 2025 Carbon tetrachloride Non-health-based Resolved
April 1, 2025 1,2-Dichloropropane Non-health-based Resolved

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Contaminant Category Violations Health-Based
Arsenic Monitoring & Reporting 14 Yes
1,2,4-Trichlorobenzene Monitoring & Reporting 8 No
cis-1,2-Dichloroethylene Monitoring & Reporting 8 No
Xylenes, Total Monitoring & Reporting 8 No
DICHLOROMETHANE Monitoring & Reporting 8 No
o-Dichlorobenzene Monitoring & Reporting 8 No
p-Dichlorobenzene Monitoring & Reporting 8 No
Vinyl chloride Monitoring & Reporting 8 No
1,1-Dichloroethylene Monitoring & Reporting 8 No
trans-1,2-Dichloroethylene Monitoring & Reporting 8 No
1,2-Dichloroethane Monitoring & Reporting 8 No
1,1,1-Trichloroethane Monitoring & Reporting 8 No
Carbon tetrachloride Monitoring & Reporting 8 No
1,2-Dichloropropane Monitoring & Reporting 8 No
Chlorodibromoacetic Acid Disinfection Byproducts 8 No

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

Lead Level Exceeds Action Level Sample Date
Below the reporting limit No 2024-12-31

No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.

Radon Risk in Service Area

1 of 1 ZIP records with known zones is in EPA Radon Zone 2.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

ZIP Codes Served

Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by AZ or modeled from parcel and building-footprint data.

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Big Park Water Company (AZ0413012) on EPA.gov.

Frequently Asked Questions

Is Big Park Water Company water safe to drink?

The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for Big Park Water Company. Review the utility's current notices and EPA record. This system-level compliance history cannot determine conditions at a specific tap.

How many people does Big Park Water Company serve?

Big Park Water Company serves approximately 7,392 people across 1 ZIP code in Arizona.

Where does Big Park Water Company get its water?

The primary water source is groundwater.

Federal UCMR5 PFAS Monitoring: Sample Above an EPA MCL Value or State Standard

This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS measurements were above the level of the EPA MCL for that compound (April 2024 rule, which takes effect in 2029) or above an applicable state drinking-water standard; a monitoring result above that level is not by itself a violation.

Samples collected
290
Detections
9
Latest sample
8/14/2023
Highest analyte
PFBS: 28 ppt
Analyte Max detected EPA MCL (compliance required from 2029) Status
PFOA 21 ppt 4 ppt Above EPA MCL value (compliance required from 2029)
PFBS 28 ppt No federal MCL โ€”
PFPeA 4.6 ppt No federal MCL โ€”
PFHxA 4.6 ppt No federal MCL โ€”
PFOS 4.1 ppt 4 ppt Above EPA MCL value (compliance required from 2029)
PFHpA 4 ppt No federal MCL โ€”

EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.

Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) โ€” per-system federal sampling, 2023โ€“2025. EPA UCMR5 monitoring program โ†’

Understand PFAS health context and filtration โ†’

Frequently Asked Questions

Is water from Big Park Water Company safe to drink? ▼
Big Park Water Company has 197 recorded violations since 2021. The D shown is a ZIP-area score, not a grade for this utility; see the violation table for what was violated.
Should I use a water filter? ▼
Given 197 recorded violations, review the violation types and dates; a filter certified for a specific contaminant of concern can reduce that contaminant at the tap. Monitoring or reporting violations are not something a filter addresses.
How many people does Big Park Water Company serve? ▼
Big Park Water Company serves approximately 7,392 people with drinking water across 1 ZIP code.
What is Big Park Water Company's water source? ▼
Big Park Water Company draws water from groundwater sources. Source type affects which contaminants are most likely to be present.
Is there lead in Big Park Water Company's water? ▼
The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero. This is at or below the EPA lead action level, which triggers system action and is not a safe level; the EPA health goal for lead is zero.
What is the demographic profile of the ZIP codes associated with Big Park Water Company? ▼
The ZIP codes mapped to Big Park Water Company have a median household income of $80,304 (Census ZIP-code estimate). In CEJST data, 38% of census tracts in the counties mapped to this area are designated disadvantaged (average across mapped ZIP codes), which may indicate greater vulnerability to environmental health risks.
Where does Big Park Water Company get its water? ▼
Big Park Water Company's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table. The available violation history and environmental indicators place this system in the elevated review category; they do not measure current source contamination.

How to cite this page

APA ZipCheckup. (n.d.). Big Park Water Company (AZ): 7 Health Violations. https://zipcheckup.com/water-system/az0413012/
BibTeX
@misc{zipcheckup-water-system-az0413012,
  author = {{ZipCheckup}},
  title  = {{Big Park Water Company (AZ): 7 Health Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/az0413012/}
}

What You Can Do

1

Test your water

Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter โ†’

2

Check your specific ZIP code

Water quality can vary within a system. View nearest ZIP report โ†’

3

Contact your utility

Big Park Water Company (EPA ID: AZ0413012) - request the latest Consumer Confidence Report or ask about specific contaminants.

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