Collinsville
EPA ID: OK1021505 · 5,400 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Collinsville (OK1021505): 1 health-based violation recorded since 2021. 25 violations on file at Collinsville, none open; 5,400 people served.
Data: EPA SDWIS
Service Area Map
Coverage area for Collinsville Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Collinsville have a median household income of $90,148 and about 23,504 residents live in those ZIP codes (Census; not the number of people this system supplies).
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?
Collinsville'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
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
Collinsville (EPA ID: OK1021505) is a community water system in Oklahoma that serves approximately 5,400 people from surface water sources.
This system serves ZIP code 74021 in Collinsville.
Violation History
Status breakdown for accepted records with record years 2021-2026: 3 resolved, 22 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 |
|---|---|---|---|
| January 1, 2025 | Nitrate-Nitrite | Non-health-based | Archived |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Health-based | Resolved |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Non-health-based | Resolved |
| July 1, 2023 | Interim Enhanced Surface Water Treatment Rule | Non-health-based | Resolved |
| January 1, 2023 | 1,2,4-Trichlorobenzene | Non-health-based | Archived |
| January 1, 2023 | cis-1,2-Dichloroethylene | Non-health-based | Archived |
| January 1, 2023 | Xylenes, Total | Non-health-based | Archived |
| January 1, 2023 | DICHLOROMETHANE | Non-health-based | Archived |
| January 1, 2023 | o-Dichlorobenzene | Non-health-based | Archived |
| January 1, 2023 | p-Dichlorobenzene | Non-health-based | Archived |
| January 1, 2023 | Vinyl chloride | Non-health-based | Archived |
| January 1, 2023 | 1,1-Dichloroethylene | Non-health-based | Archived |
| January 1, 2023 | trans-1,2-Dichloroethylene | Non-health-based | Archived |
| January 1, 2023 | 1,2-Dichloroethane | Non-health-based | Archived |
| January 1, 2023 | 1,1,1-Trichloroethane | Non-health-based | Archived |
| January 1, 2023 | Carbon tetrachloride | Non-health-based | Archived |
| January 1, 2023 | 1,2-Dichloropropane | Non-health-based | Archived |
| January 1, 2023 | Trichloroethylene | Non-health-based | Archived |
| January 1, 2023 | 1,1,2-Trichloroethane | Non-health-based | Archived |
| January 1, 2023 | Tetrachloroethylene | Non-health-based | Archived |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | Treatment Technique, Monitoring & Reporting | 2 | Yes |
| Nitrate-Nitrite | Monitoring & Reporting | 1 | No |
| 1,2,4-Trichlorobenzene | Monitoring & Reporting | 1 | No |
| cis-1,2-Dichloroethylene | Monitoring & Reporting | 1 | No |
| Xylenes, Total | Monitoring & Reporting | 1 | No |
| DICHLOROMETHANE | Monitoring & Reporting | 1 | No |
| o-Dichlorobenzene | Monitoring & Reporting | 1 | No |
| p-Dichlorobenzene | Monitoring & Reporting | 1 | No |
| Vinyl chloride | Monitoring & Reporting | 1 | No |
| 1,1-Dichloroethylene | Monitoring & Reporting | 1 | No |
| trans-1,2-Dichloroethylene | Monitoring & Reporting | 1 | No |
| 1,2-Dichloroethane | Monitoring & Reporting | 1 | No |
| 1,1,1-Trichloroethane | Monitoring & Reporting | 1 | No |
| Carbon tetrachloride | Monitoring & Reporting | 1 | No |
| 1,2-Dichloropropane | Monitoring & Reporting | 1 | 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 | 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.
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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.
- 74021 - Collinsville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Collinsville (OK1021505) on EPA.gov.
Frequently Asked Questions
Is Collinsville water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Collinsville; its 25 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Collinsville serve?
Collinsville serves approximately 5,400 people across 1 ZIP code in Oklahoma.
Where does Collinsville get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
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) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Collinsville (OK): 1 Health Violation. https://zipcheckup.com/water-system/ok1021505/
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title = {{Collinsville (OK): 1 Health Violation}},
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url = {https://zipcheckup.com/water-system/ok1021505/}
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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
Collinsville (EPA ID: OK1021505) - request the latest Consumer Confidence Report or ask about specific contaminants.