Decker Hills
EPA ID: TX1700386 · 3,780 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Decker Hills (TX1700386): 2 unresolved EPA violations on record. Right now, Decker Hills shows 2 EPA violations marked active and unresolved - the provider continues to supply approximately 3,780 residents while each finding awaits closure.
Data: EPA SDWIS
Service Area Map
Coverage area for Decker Hills Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Decker Hills serves a community with a median household income of $112,093 and an estimated 40,501 residents across its service area.
💧 Where Does Your Water Come From?
Decker Hills'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.
Infrastructure Risk
Detected Contaminants
How Decker Hills compares to EPA limits
What This Means For You
Stage 1 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Lead and Copper Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Total Coliform at 1 presence exceeds the EPA maximum of presence.
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
Decker Hills (EPA ID: TX1700386) is a community water system in Texas that serves approximately 3,780 people from groundwater sources.
This system serves ZIP code 77354 in Magnolia.
Violation History
Status breakdown for accepted records with record years 2021-2026: 3 resolved, 0 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 |
|---|---|---|---|
| October 30, 2025 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| August 11, 2025 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| August 1, 2024 | Total Coliform | Non-health-based | Resolved |
| January 1, 2024 | Stage 1 DBP Rule | Non-health-based | Resolved |
| January 1, 2021 | Stage 1 DBP 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 |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Failure | 2 | No |
| Lead and Copper Rule | Treatment Failure | 2 | No |
| Total Coliform | Microbiological | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0047 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.
- 77354 - Magnolia
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Decker Hills (TX1700386) on EPA.gov.
Frequently Asked Questions
Is Decker Hills 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 Decker Hills serve?
Decker Hills serves approximately 3,780 people across 1 ZIP code in Texas.
Where does Decker Hills get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
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.). Decker Hills (TX): 5 EPA Violations. https://zipcheckup.com/water-system/tx1700386/
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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
Decker Hills (EPA ID: TX1700386) - request the latest Consumer Confidence Report or ask about specific contaminants.