Coke County Water Supply Corporation
EPA ID: TX0410017 · 410 people served · 1 ZIP code
Per EPA records, Coke County Water Supply Corporation: 11 unresolved violations, 410 people in service area.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 2 (2024) to 13 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Coke County Water Supply Corporation Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Coke County Water Supply Corporation serves a community with a median household income of $40,556 and an estimated 1,706 residents across its service area. Approximately 75% 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?
Coke County Water Supply Corporation'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.
About 0% of homes in Coke County, Texas rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Coke County Water Supply Corporation compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 16 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Lead and Copper Rule at 5 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 4 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment 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
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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
Coke County Water Supply Corporation (EPA ID: TX0410017) is a community water system in Texas that serves approximately 410 people from surface water sources.
This system serves ZIP code 76945 in Robert Lee.
Average Home Safety Score: C (66/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| April 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| March 20, 2025 | Lead and Copper Rule | Monitoring | Resolved |
| February 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| January 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| October 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| July 5, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| July 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| April 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| January 1, 2024 | Stage 1 DBP Rule | Monitoring | Resolved |
| January 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| December 31, 2023 | Lead and Copper Rule | Monitoring | Resolved |
| October 1, 2023 | Haloacetic Acids (HAA5) | Health-based | Resolved |
| July 1, 2023 | Stage 1 DBP Rule | Monitoring | Resolved |
| July 1, 2023 | Surface Water Treatment Rule | Monitoring | Resolved |
| July 1, 2023 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| June 22, 2023 | Lead and Copper Rule | Monitoring | Resolved |
| April 1, 2023 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| January 1, 2023 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
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 | 16 | Yes |
| Lead and Copper Rule | Treatment Failure | 5 | No |
| Stage 1 DBP Rule | Treatment Failure | 4 | No |
| Consumer Confidence Report Rule | Reporting Failure | 2 | No |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
| Revised Total Coliform Rule | Microbiological | 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 →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 76945 | 0.000396 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
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 TX or modeled from parcel and building-footprint data.
- 76945 — Robert Lee
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Coke County Water Supply Corporation (TX0410017) on EPA.gov.
Frequently Asked Questions
Is Coke County Water Supply Corporation water safe to drink?
Coke County Water Supply Corporation has recorded 16 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Coke County Water Supply Corporation serve?
Coke County Water Supply Corporation serves approximately 410 people across 1 ZIP code in Texas.
Where does Coke County Water Supply Corporation get its water?
The primary water source is surface water.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
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
Coke County Water Supply Corporation (EPA ID: TX0410017) — request the latest Consumer Confidence Report or ask about specific contaminants.