City of Alamo Heights
EPA ID: TX0150039 · 7,357 people served · 86 ZIP codes
Five clean years on EPA record — City of Alamo Heights, 7,357 residents served.
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 12 (2021) to 87 (2024). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for City of Alamo Heights Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The City of Alamo Heights serves a community with a median household income of $63,114 and an estimated 1,860,461 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: 45% 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 Alamo Heights'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 Bexar County, Texas rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Superfund Proximity Note: This service area ranks in the 69th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 185 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
City of Alamo Heights (EPA ID: TX0150039) is a community water system in Texas that serves approximately 7,357 people from groundwater sources.
This system provides water to 86 ZIP codes across 1 community.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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: 1 ZIP code confirmed via EPA Community Water System Service Area Boundaries v3 plus 85 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.
This system serves 86 ZIP codes:
78201 · 78202 · 78203 · 78204 · 78205 78206 · 78207 · 78208 · 78209 · 78210 78211 · 78212 · 78213 · 78214 · 78215 78216 · 78217 · 78218 · 78219 · 78220 78221 · 78222 · 78223 · 78224 · 78225 78226 · 78227 · 78228 · 78229 · 78230 78231 · 78232 · 78233 · 78234 · 78235 78237 · 78238 · 78239 · 78240 · 78241 78242 · 78243 · 78244 · 78245 · 78246 78247 · 78248 · 78249 · 78250 · 78251 78252 · 78253 · 78254 · 78255 · 78256 78257 · 78258 · 78259 · 78260 · 78261 78263 · 78264 · 78265 · 78266 · 78268 78269 · 78270 · 78278 · 78279 · 78280 78283 · 78284 · 78285 · 78286 · 78287 78288 · 78289 · 78291 · 78292 · 78293 78294 · 78295 · 78296 · 78297 · 78298 78299
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Alamo Heights (TX0150039) on EPA.gov.
Frequently Asked Questions
Is City of Alamo Heights water safe to drink?
Based on EPA records, City of Alamo Heights has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does City of Alamo Heights serve?
City of Alamo Heights serves approximately 7,357 people across 86 ZIP codes in Texas.
Where does City of Alamo Heights 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 →
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.