Blocker Crossroads Water Supply Corporation
EPA ID: TX1020077 · 1,836 people served · 4 ZIP codes
Within the EPA compliance database, Blocker Crossroads Water Supply Corporation shows 4 violations still pending resolution — a status that applies across the full service territory of approximately 1,836 people and reflects findings that have not yet cleared the federal enforcement process or received formal closure.
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 1 (2021) to 7 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Blocker Crossroads Water Supply Corporation Source: EPA SDWIS service area boundaries.
Service area boundary — Grade B
Service Area Demographics
The Blocker Crossroads Water Supply Corporation serves a community with a median household income of $65,222 and an estimated 21,941 residents across its service area. Approximately 70% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 47% 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?
Blocker Crossroads Water Supply Corporation's water is pumped from underground aquifers. 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.
About 1% of homes in Harrison 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 Blocker Crossroads Water Supply Corporation compares to EPA limits
What This Means For You
Lead and Copper Rule at 16 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 10 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 7 mg/L exceeds the EPA maximum of mg/L.
Revised Total Coliform Rule at 5 presence exceeds the EPA maximum of presence.
Total Coliform at 2 presence exceeds the EPA maximum of presence.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 1 detection recorded.
Comparable Water Systems
Similar-sized systems in Texas
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
Blocker Crossroads Water Supply Corporation (EPA ID: TX1020077) is a community water system in Texas that serves approximately 1,836 people from groundwater sources.
This system provides water to 4 ZIP codes across 4 communities.
Average Home Safety Score: B (82/100)
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 |
|---|---|---|---|
| May 1, 2025 | Lead and Copper Rule | Monitoring | Resolved |
| December 30, 2024 | Stage 1 DBP Rule | Monitoring | Resolved |
| December 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Resolved |
| September 1, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| July 2, 2024 | Surface Water Treatment Rule | Monitoring | Unresolved |
| December 1, 2023 | Consumer Confidence Report Rule | Monitoring | Resolved |
| August 13, 2023 | Lead and Copper Rule | Monitoring | Resolved |
| August 11, 2023 | Lead and Copper Rule | Monitoring | Resolved |
| August 1, 2023 | Consumer Confidence Report Rule | Monitoring | Resolved |
| July 1, 2023 | Stage 1 DBP Rule | Monitoring | Resolved |
| July 1, 2023 | Revised Total Coliform Rule | Monitoring | Unresolved |
| April 1, 2023 | Revised Total Coliform Rule | Monitoring | Unresolved |
| March 7, 2023 | Total Coliform | Monitoring | Resolved |
| March 5, 2023 | Lead and Copper Rule | Monitoring | Resolved |
| February 13, 2023 | Lead and Copper Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Lead and Copper Rule | Treatment Failure | 16 | No |
| Stage 1 DBP Rule | Treatment Failure | 10 | No |
| Consumer Confidence Report Rule | Reporting Failure | 7 | No |
| Revised Total Coliform Rule | Microbiological | 5 | No |
| Total Coliform | Microbiological | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 75642 | 0.00316 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: 2 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 2 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Blocker Crossroads Water Supply Corporation (TX1020077) on EPA.gov.
Frequently Asked Questions
Is Blocker Crossroads Water Supply Corporation water safe to drink?
Blocker Crossroads Water Supply Corporation has recorded 1 health-based violation 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 Blocker Crossroads Water Supply Corporation serve?
Blocker Crossroads Water Supply Corporation serves approximately 1,836 people across 4 ZIP codes in Texas.
Where does Blocker Crossroads Water Supply Corporation get its water?
The primary water source is groundwater.
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
Blocker Crossroads Water Supply Corporation (EPA ID: TX1020077) — request the latest Consumer Confidence Report or ask about specific contaminants.