Granite Public Water System
EPA ID: OK2002804 · 1,425 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for Granite Public Water System (OK2002804): 1 health-based violation recorded since 2021. Granite Public Water System has 11 EPA violations on record, all marked resolved in the federal data; the utility serves 1,425 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Granite Public Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Granite Public Water System have a median household income of $58,912 and about 2,132 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 79% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 100% 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.
💧 Where Does Your Water Come From?
Granite Public Water System'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.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Oklahoma
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
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.
System Overview
Granite Public Water System (EPA ID: OK2002804) is a community water system in Oklahoma that serves approximately 1,425 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 11 resolved, 0 archived, 0 addressed, and 0 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 |
|---|---|---|---|
| July 1, 2025 | Consumer Confidence Rule | Non-health-based | Resolved |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Health-based | Resolved |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Non-health-based | Resolved |
| October 2, 2023 | Consumer Confidence Rule | Non-health-based | Resolved |
| January 1, 2023 | Chlorine | Non-health-based | Resolved |
| January 1, 2023 | Revised Total Coliform Rule | Non-health-based | Resolved |
| October 2, 2022 | Consumer Confidence Rule | Non-health-based | Resolved |
| June 1, 2022 | Revised Total Coliform Rule | Non-health-based | Resolved |
| April 1, 2022 | Chlorine | Non-health-based | Resolved |
| June 1, 2021 | Revised Total Coliform Rule | Non-health-based | Resolved |
| April 1, 2021 | Chlorine | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Consumer Confidence Rule | Other (notice or report rule) | 3 | No |
| Chlorine | Monitoring & Reporting | 3 | No |
| Chlorine | Monitoring & Reporting | 3 | No |
| LEAD AND COPPER RULE REVISIONS | Treatment Technique, Monitoring & Reporting | 2 | Yes |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0012 mg/L | No | 2025-12-31 |
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
2 of 2 ZIP records with known zones are in EPA Radon Zone 3.
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 OK 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 Granite Public Water System (OK2002804) on EPA.gov.
Frequently Asked Questions
Is Granite Public Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Granite Public Water System; its 11 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Granite Public Water System serve?
Granite Public Water System serves approximately 1,425 people across 2 ZIP codes in Oklahoma.
Where does Granite Public Water System get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Granite Public Water System (OK): 1 Health Violation. https://zipcheckup.com/water-system/ok2002804/
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author = {{ZipCheckup}},
title = {{Granite Public Water System (OK): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ok2002804/}
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What You Can Do
Test your water
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Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Granite Public Water System (EPA ID: OK2002804) - request the latest Consumer Confidence Report or ask about specific contaminants.