Castlewood Subdivision
EPA ID: TX1010111 · 1,053 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Castlewood Subdivision (TX1010111): 4 EPA violations in the last five years. Although 4 violations appeared on Castlewood Subdivision's record, all have been remedied - currently compliant, 1,053 served.
Data: EPA SDWIS
Service Area Map
Coverage area for Castlewood Subdivision Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Castlewood Subdivision serves a community with a median household income of $44,567 and an estimated 28,335 residents across its service area. Approximately 79% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 51% 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?
Castlewood Subdivision'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.
Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Detected Contaminants
How Castlewood Subdivision compares to EPA limits
What This Means For You
Lead and Copper Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 2 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 2 detections 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
Castlewood Subdivision (EPA ID: TX1010111) is a community water system in Texas that serves approximately 1,053 people from groundwater sources.
This system serves ZIP code 77039 in Houston.
Violation History
Status breakdown for accepted records with record years 2021-2026: 4 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 |
|---|---|---|---|
| September 1, 2022 | Lead and Copper Rule | Non-health-based | Resolved |
| August 1, 2022 | Lead and Copper Rule | Non-health-based | Resolved |
| August 1, 2021 | Consumer Confidence Report Rule | Non-health-based | Resolved |
| July 1, 2021 | Consumer Confidence Report Rule | Non-health-based | 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 | 2 | No |
| Consumer Confidence Report Rule | Reporting Failure | 2 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 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 TX or modeled from parcel and building-footprint data.
- 77039 - Houston
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Castlewood Subdivision (TX1010111) on EPA.gov.
Frequently Asked Questions
Is Castlewood Subdivision water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Castlewood Subdivision; its 4 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Castlewood Subdivision serve?
Castlewood Subdivision serves approximately 1,053 people across 1 ZIP code in Texas.
Where does Castlewood Subdivision get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Castlewood Subdivision (TX): 4 EPA Violations. https://zipcheckup.com/water-system/tx1010111/
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author = {{ZipCheckup}},
title = {{Castlewood Subdivision (TX): 4 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/tx1010111/}
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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
Castlewood Subdivision (EPA ID: TX1010111) - request the latest Consumer Confidence Report or ask about specific contaminants.