Grayhorse Rwd
EPA ID: OK3005717 · 100 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Grayhorse Rwd (OK3005717): 2 unresolved EPA violations on record. Grayhorse Rwd shows 2 open EPA violations in current federal records for approximately 100 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Grayhorse Rwd Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Grayhorse Rwd serves a community with a median household income of $55,208 and an estimated 1,501 residents across its service area. Approximately 89% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 100% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. 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?
Grayhorse Rwd's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
Detected Contaminants
How Grayhorse Rwd compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 28 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Total Trihalomethanes (TTHM) at 23 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Surface Water Treatment Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →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
Grayhorse Rwd (EPA ID: OK3005717) is a community water system in Oklahoma that serves approximately 100 people from surface water sources.
This system serves ZIP code 74637 in Fairfax.
Violation History
Status breakdown for accepted records with record years 2021-2026: 20 resolved, 32 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 30, 2025 | Haloacetic Acids (HAA5) | Non-health-based | Resolved |
| December 30, 2025 | Total Trihalomethanes (TTHM) | Non-health-based | Resolved |
| October 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Archived |
| October 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Archived |
| September 29, 2025 | Total Trihalomethanes (TTHM) | Non-health-based | Unaddressed (current) |
| September 29, 2025 | Haloacetic Acids (HAA5) | Non-health-based | Unaddressed (current) |
| July 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Archived |
| July 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Archived |
| April 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Archived |
| April 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Archived |
| January 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Archived |
| October 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Archived |
| September 29, 2024 | Haloacetic Acids (HAA5) | Non-health-based | Resolved |
| July 1, 2024 | Surface Water Treatment Rule | Non-health-based | Resolved |
| July 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Archived |
| April 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Archived |
| January 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Archived |
| October 2, 2023 | Surface Water Treatment Rule | Non-health-based | Resolved |
| October 1, 2023 | Total Trihalomethanes (TTHM) | Health-based | Archived |
| October 1, 2023 | Haloacetic Acids (HAA5) | Health-based | Archived |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 28 | Yes |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 23 | Yes |
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
Health Risk Details
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
Total Trihalomethanes (TTHM) (EPA limit: 0.08 mg/L)
Bladder & rectal cancer risk; reproductive concerns At-risk groups: pregnant women, long-term consumers of chlorinated water, people who frequently shower in chlorinated water.
Removal methods: granular activated carbon (GAC), carbon block filter, point-of-entry aeration. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0037 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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.
- 74637 - Fairfax
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Grayhorse Rwd (OK3005717) on EPA.gov.
Frequently Asked Questions
Is Grayhorse Rwd water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Grayhorse Rwd serve?
Grayhorse Rwd serves approximately 100 people across 1 ZIP code in Oklahoma.
Where does Grayhorse Rwd get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Grayhorse Rwd (OK): 34 Health Violations. https://zipcheckup.com/water-system/ok3005717/
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author = {{ZipCheckup}},
title = {{Grayhorse Rwd (OK): 34 Health Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ok3005717/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Grayhorse Rwd (EPA ID: OK3005717) - request the latest Consumer Confidence Report or ask about specific contaminants.