City of Leon Valley
EPA ID: TX0150178 · 7,794 people served · 3 ZIP codes
ZipCheckup's reading of EPA SDWIS for City of Leon Valley (TX0150178): 43 EPA violations in the last five years. Past issues aside, City of Leon Valley cleared all 43 violations and is compliant today, supplying 7,794 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for City of Leon Valley Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The City of Leon Valley serves a community with a median household income of $62,203 and an estimated 141,113 residents across its service area. Approximately 49% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 46% 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?
City of Leon Valley'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.
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 City of Leon Valley compares to EPA limits
What This Means For You
PFOA at 2 mg/L exceeds the EPA maximum of 0.000004 mg/L.
PFNA at 2 mg/L exceeds the EPA maximum of 0.00001 mg/L.
Chlorodibromomethane at 2 mg/L exceeds the EPA maximum of 0.002 mg/L. Liver cancer, brain cancer (known carcinogen). Consider granular activated carbon (GAC) filtration.
Bromate at 2 mg/L exceeds the EPA maximum of 0.01 mg/L.
Monochloroacetic Acid at 2 mg/L exceeds the EPA maximum of 0.06 mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 9 detections recorded.
Chlorodibromomethane was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →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
City of Leon Valley (EPA ID: TX0150178) is a community water system in Texas that serves approximately 7,794 people from groundwater sources.
This system provides water to 3 ZIP codes across 1 community.
Violation History
Status breakdown for accepted records with record years 2021-2026: 43 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 |
|---|---|---|---|
| July 2, 2025 | Stage 2 DBP Rule | Non-health-based | Resolved |
| July 1, 2023 | PFOA | Non-health-based | Resolved |
| July 1, 2023 | PFNA | Non-health-based | Resolved |
| July 1, 2023 | Monochloroacetic Acid | Non-health-based | Resolved |
| July 1, 2023 | Dichloroacetic Acid | Non-health-based | Resolved |
| July 1, 2023 | Bromodichloromethane | Non-health-based | Resolved |
| July 1, 2023 | Dibromochloromethane | Non-health-based | Resolved |
| July 1, 2023 | Bromoform | Non-health-based | Resolved |
| July 1, 2023 | Chlorodibromomethane | Non-health-based | Resolved |
| July 1, 2023 | Trichloroacetic Acid | Non-health-based | Resolved |
| July 1, 2023 | Monobromoacetic Acid | Non-health-based | Resolved |
| July 1, 2023 | Dibromoacetic Acid | Non-health-based | Resolved |
| July 1, 2023 | Bromochloroacetic Acid | Non-health-based | Resolved |
| July 1, 2023 | Bromodichloroacetic Acid | Non-health-based | Resolved |
| July 1, 2023 | Chlorodibromoacetic Acid | Non-health-based | Resolved |
| July 1, 2023 | Tribromoacetic Acid | Non-health-based | Resolved |
| July 1, 2023 | HAA6Br | Non-health-based | Resolved |
| July 1, 2023 | HAA9 | Non-health-based | Resolved |
| July 1, 2023 | Bromate | Non-health-based | Resolved |
| July 1, 2023 | Chlorate | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| PFOA | PFAS | 2 | No |
| PFNA | PFAS | 2 | No |
| Monochloroacetic Acid | Disinfection Byproducts | 2 | No |
| Dichloroacetic Acid | Disinfection Byproducts | 2 | No |
| Bromodichloromethane | Disinfection Byproducts | 2 | No |
| Dibromochloromethane | Disinfection Byproducts | 2 | No |
| Bromoform | Disinfection Byproducts | 2 | No |
| Chlorodibromomethane | Disinfection Byproducts | 2 | No |
| Trichloroacetic Acid | Disinfection Byproducts | 2 | No |
| Monobromoacetic Acid | Disinfection Byproducts | 2 | No |
| Dibromoacetic Acid | Disinfection Byproducts | 2 | No |
| Bromochloroacetic Acid | Disinfection Byproducts | 2 | No |
| Bromodichloroacetic Acid | Disinfection Byproducts | 2 | No |
| Chlorodibromoacetic Acid | Disinfection Byproducts | 2 | No |
| Tribromoacetic Acid | Disinfection Byproducts | 2 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.001 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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Leon Valley (TX0150178) on EPA.gov.
Frequently Asked Questions
Is City of Leon Valley water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for City of Leon Valley; its 43 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does City of Leon Valley serve?
City of Leon Valley serves approximately 7,794 people across 3 ZIP codes in Texas.
Where does City of Leon Valley get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
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.). City of Leon Valley (TX): 43 EPA Violations. https://zipcheckup.com/water-system/tx0150178/
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title = {{City of Leon Valley (TX): 43 EPA Violations}},
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url = {https://zipcheckup.com/water-system/tx0150178/}
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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
City of Leon Valley (EPA ID: TX0150178) - request the latest Consumer Confidence Report or ask about specific contaminants.