Health Concerns Found SCHOOL DISTRICT PFAS DETECTED

San Antonio School District (TX): 86 Health Violations

86 ZIP codes · 19 water systems · 179,655,398 people served · Updated 2026-06-04

Data: EPA SDWIS, NCES Last verified: 2026-06-04

A · 92
Avg Safety Score
86
ZIP Codes
19
Water Systems
172
Violations (5yr)
0.0016 mg/L
Avg Lead Level
61
ZIPs with PFAS
Zone 3
Radon Risk

Why School Water Quality Matters

Children drink 2–4× more water per pound of body weight than adults, making them more vulnerable to contaminants. School water quality affects students for hours every weekday.

Water Quality Overview

The San Antonio School District in Texas spans 86 ZIP codes served by 19 community water systems, providing water to approximately 179,655,398 people.

The average Home Safety Score across the district is A (92/100) — with the lowest-scoring area at 79/100 .

Water quality in this district ranks better than 92% of ZIP codes nationally.

Why This Matters for Children

Children are more vulnerable to water contaminants than adults. The EPA and CDC identify these key risks:

  • Lead exposure — Even low levels of lead can affect brain development, reduce IQ, and cause behavioral problems in children. There is no safe level of lead for children.
  • PFAS ("forever chemicals") — Linked to immune system effects and developmental delays in children. Children drink more water relative to body weight than adults.
  • Nitrate — Dangerous for infants (can cause "blue baby syndrome"). Agricultural areas often have elevated nitrate.
  • Disinfection byproducts — Long-term exposure may increase cancer risk. School water fountains often have stagnant water that concentrates these compounds.

Lead Levels in the District

Metric Value EPA Threshold
Average lead level (90th percentile) 0.0016 mg/L 0.015 mg/L
Highest lead level 0.0016 mg/L 0.015 mg/L
ZIP codes exceeding EPA action level 0 of 86 —

PFAS Contamination

PFAS ("forever chemicals") detected in 61 of 86 ZIP codes in this district.

Detected compounds: PFBA, PFBS, PFPeA, PFOS.

Highest measured level: 0.0092 µg/L.

PFAS can accumulate in the body over time. Children's higher water intake relative to body weight makes them particularly susceptible. Reverse osmosis filters (NSF/ANSI 58) are the most effective at removing PFAS.

Learn more about PFAS in drinking water →

EPA Violation History

86 health-based violations recorded across 86 of 86 ZIP codes in the past 5 years.

Contaminants of Concern

Contaminant Category Violations Health-Based ZIPs Affected
Total Coliform Microbiological 86 No 86
Stage 1 DBP Rule Treatment Technique 86 Yes 86

Radon Risk

Dominant radon zone: Zone 3 (Low risk)

Water Quality by ZIP Code

ZIP Code City Safety Score Violations Health Lead Level Exceeds?
78201 San Antonio B (84) 2 1 0.0016 mg/L No
78202 San Antonio A (94) 2 1 0.0016 mg/L No
78203 San Antonio A (98) 2 1 0.0016 mg/L No
78204 San Antonio A (94) 2 1 0.0016 mg/L No
78205 San Antonio A (89) 2 1 0.0016 mg/L No
78206 San Antonio A (98) 2 1 0.0016 mg/L No
78207 San Antonio A (89) 2 1 0.0016 mg/L No
78208 San Antonio A (94) 2 1 0.0016 mg/L No
78209 San Antonio B (79) 2 1 0.0016 mg/L No
78210 San Antonio A (89) 2 1 0.0016 mg/L No
78211 San Antonio A (89) 2 1 0.0016 mg/L No
78212 San Antonio B (84) 2 1 0.0016 mg/L No
78213 San Antonio B (84) 2 1 0.0016 mg/L No
78214 San Antonio A (89) 2 1 0.0016 mg/L No
78215 San Antonio A (89) 2 1 0.0016 mg/L No
78216 San Antonio B (84) 2 1 0.0016 mg/L No
78217 San Antonio B (84) 2 1 0.0016 mg/L No
78218 San Antonio B (84) 2 1 0.0016 mg/L No
78219 San Antonio A (89) 2 1 0.0016 mg/L No
78220 San Antonio A (89) 2 1 0.0016 mg/L No
78221 San Antonio A (89) 2 1 0.0016 mg/L No
78222 San Antonio A (94) 2 1 0.0016 mg/L No
78223 San Antonio A (89) 2 1 0.0016 mg/L No
78224 San Antonio A (94) 2 1 0.0016 mg/L No
78225 San Antonio A (94) 2 1 0.0016 mg/L No
78226 San Antonio A (94) 2 1 0.0016 mg/L No
78227 San Antonio B (84) 2 1 0.0016 mg/L No
78228 San Antonio B (84) 2 1 0.0016 mg/L No
78229 San Antonio A (94) 2 1 0.0016 mg/L No
78230 San Antonio B (84) 2 1 0.0016 mg/L No
78231 San Antonio A (89) 2 1 0.0016 mg/L No
78232 San Antonio B (84) 2 1 0.0016 mg/L No
78233 San Antonio A (89) 2 1 0.0016 mg/L No
78234 San Antonio A (98) 2 1 0.0016 mg/L No
78235 San Antonio A (98) 2 1 0.0016 mg/L No
78237 San Antonio A (89) 2 1 0.0016 mg/L No
78238 San Antonio B (84) 2 1 0.0016 mg/L No
78239 San Antonio A (89) 2 1 0.0016 mg/L No
78240 San Antonio A (89) 2 1 0.0016 mg/L No
78241 San Antonio A (94) 2 1 0.0016 mg/L No
78242 San Antonio A (89) 2 1 0.0016 mg/L No
78243 San Antonio A (98) 2 1 0.0016 mg/L No
78244 San Antonio A (94) 2 1 0.0016 mg/L No
78245 San Antonio A (89) 2 1 0.0016 mg/L No
78246 San Antonio A (98) 2 1 0.0016 mg/L No
78247 San Antonio A (89) 2 1 0.0016 mg/L No
78248 San Antonio A (89) 2 1 0.0016 mg/L No
78249 San Antonio A (89) 2 1 0.0016 mg/L No
78250 San Antonio A (89) 2 1 0.0016 mg/L No
78251 San Antonio A (94) 2 1 0.0016 mg/L No
78252 San Antonio A (94) 2 1 0.0016 mg/L No
78253 San Antonio A (89) 2 1 0.0016 mg/L No
78254 San Antonio A (89) 2 1 0.0016 mg/L No
78255 San Antonio A (89) 2 1 0.0016 mg/L No
78256 San Antonio A (94) 2 1 0.0016 mg/L No
78257 San Antonio A (89) 2 1 0.0016 mg/L No
78258 San Antonio A (89) 2 1 0.0016 mg/L No
78259 San Antonio A (89) 2 1 0.0016 mg/L No
78260 San Antonio A (89) 2 1 0.0016 mg/L No
78261 San Antonio A (94) 2 1 0.0016 mg/L No
78263 San Antonio A (94) 2 1 0.0016 mg/L No
78264 San Antonio A (94) 2 1 0.0016 mg/L No
78265 San Antonio A (94) 2 1 0.0016 mg/L No
78266 San Antonio A (89) 2 1 0.0016 mg/L No
78268 San Antonio A (98) 2 1 0.0016 mg/L No
78269 San Antonio A (98) 2 1 0.0016 mg/L No
78270 San Antonio A (98) 2 1 0.0016 mg/L No
78278 San Antonio A (98) 2 1 0.0016 mg/L No
78279 San Antonio A (98) 2 1 0.0016 mg/L No
78280 San Antonio A (98) 2 1 0.0016 mg/L No
78283 San Antonio A (98) 2 1 0.0016 mg/L No
78284 San Antonio A (98) 2 1 0.0016 mg/L No
78285 San Antonio A (98) 2 1 0.0016 mg/L No
78286 San Antonio A (98) 2 1 0.0016 mg/L No
78287 San Antonio A (98) 2 1 0.0016 mg/L No
78288 San Antonio A (98) 2 1 0.0016 mg/L No
78289 San Antonio A (98) 2 1 0.0016 mg/L No
78291 San Antonio A (94) 2 1 0.0016 mg/L No
78292 San Antonio A (98) 2 1 0.0016 mg/L No
78293 San Antonio A (98) 2 1 0.0016 mg/L No
78294 San Antonio A (98) 2 1 0.0016 mg/L No
78295 San Antonio A (98) 2 1 0.0016 mg/L No
78296 San Antonio A (98) 2 1 0.0016 mg/L No
78297 San Antonio A (98) 2 1 0.0016 mg/L No
78298 San Antonio A (98) 2 1 0.0016 mg/L No
78299 San Antonio A (98) 2 1 0.0016 mg/L No

What Parents Can Do

  1. Request lead testing at your child's school — The EPA's 3Ts program (Training, Testing, Taking Action) provides guidance for schools. Ask your school board about their water testing schedule.
  2. Review the Consumer Confidence Report (CCR) — Your water utility publishes this annually. It details all detected contaminants.
  3. Test your home's water — Especially if your home has older plumbing (pre-1986) that may contain lead solder or lead pipes.
  4. Address PFAS — If PFAS are detected in your area, a reverse osmosis or activated carbon block filter rated NSF/ANSI 53 or 58 can reduce levels significantly.
  5. Pack water from home — If you're concerned about school water quality, send your child with a water bottle filled at home (filtered if possible).
  6. Stay informed — Bookmark this page to check for updates on water quality in your school district.

Need help with school water quality?

Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400

Find the Right Water Filter

Free tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.

Frequently Asked Questions

Is the water safe in San Antonio School District schools?

Water systems serving San Antonio School District have recorded 86 health-based violations in the past 5 years. While utilities are required to meet federal standards, individual school buildings may have older plumbing that can introduce contaminants. Parents should request lead testing results from their school.

Does San Antonio School District test for lead in school water?

Federal law does not require schools to test for lead in drinking water (except in some states with specific mandates). The EPA's voluntary 3Ts program encourages testing. Contact your school district office to ask about their testing schedule and results.

What level of lead is safe for children?

There is no safe level of lead for children, according to the CDC. The EPA action level of 0.015 mg/L (15 ppb) triggers corrective action for water systems, but the American Academy of Pediatrics recommends that school water contain no more than 0.001 mg/L (1 ppb).

Are there PFAS in San Antonio School District water?

Yes, PFAS have been detected in 61 of 86 ZIP codes served by this district. PFAS are "forever chemicals" that do not break down and can accumulate in the body. The EPA has set maximum contaminant levels for certain PFAS compounds. Reverse osmosis filters are the most effective at removing PFAS from drinking water.

Data Sources

Updated daily.

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