The Oaks Water Supply Corporation
EPA ID: TX0150399 · 1,191 people served · 87 ZIP codes
Water monitoring for The Oaks Water Supply Corporation: clean, five years, 1,191 residents.
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 15 (2021) to 2 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for The Oaks Water Supply Corporation Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The The Oaks Water Supply Corporation serves a community with a median household income of $63,683 and an estimated 1,902,661 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?
The Oaks Water Supply Corporation's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Kendall 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.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 192 detections recorded. 3 exceed federal EPA limits (4 ppt for PFOA/PFOS).
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
The Oaks Water Supply Corporation (EPA ID: TX0150399) is a community water system in Texas that serves approximately 1,191 people from surface water sources.
This system provides water to 87 ZIP codes across 2 communities.
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: 2 ZIP codes 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 87 ZIP codes:
78006 · 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 The Oaks Water Supply Corporation (TX0150399) on EPA.gov.
Frequently Asked Questions
Is The Oaks Water Supply Corporation water safe to drink?
Based on EPA records, The Oaks Water Supply Corporation has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does The Oaks Water Supply Corporation serve?
The Oaks Water Supply Corporation serves approximately 1,191 people across 87 ZIP codes in Texas.
Where does The Oaks Water Supply Corporation get its water?
The primary water source is surface water.
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.