Community Water System · PWS TX0150039
City of Alamo Heights
San Antonio, Texas 78209-4545 - drinking water served from groundwater sources to 7,357 people, tracked in EPA SDWIS and UCMR5.
- 7,357
- People served
- 118
- EPA violations
- 15
- Health-based
- No PFAS
- UCMR5 result
The verdict
EPA records 118 drinking-water violations at City of Alamo Heights, 13% of them health-based - above the Texas per-system average.
- 118
- Total EPA violations on record
- 13%
- Health-based (MCL / treatment failure)
- 7,357
- People served by this system
- 0
- PFAS compounds detected (UCMR5)
Water Quality Snapshot: City of Alamo Heights
City of Alamo Heights is a local-owned community water system that delivers drinking water to 7,357 residents in San Antonio, Texas (Bexar County) through 3,933 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 118 total violations for this system , of which 15 (13%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 61 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.
The most frequently cited contaminant at this system is Chlorine, recorded in 37 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.
Across Texas, EPA tracks 7,351 public water systems serving 33,253,313 people, with 746,210 cumulative violations and 162,945 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 101.5 violations. Statewide, 1,068 of 1,147 UCMR5-tested systems have reported PFAS detections (93.1%).
City of Alamo Heights's 118 violations sit above the Texas average.
All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 3,933
- County
- Bexar
- School/Daycare
- No
- MCL Violations
- 11
- Monitoring Violations
- 61
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 37 | 2019 |
| Public Notice | Other | 29 | 2025 |
| Lead and Copper Rule | MR | 13 | 2019 |
| Coliform (TCR) | MCL | 11 | 2013 |
| E. COLI | MR | 7 | 2013 |
| LEAD AND COPPER RULE REVISIONS | TT | 4 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 4 | 2024 |
| Consumer Confidence Rule | Other | 4 | 2014 |
| Revised Total Coliform Rule | MON | 4 | 2018 |
| Coliform (TCR) | Other | 1 | 1991 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 348 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| 9Cl-PF3ONS | 6/13/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| NEtFOSAA | 6/13/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 6/13/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFHpS | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 6/13/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 6/13/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 6/13/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 6/13/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 6/13/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 6/13/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| ADONA | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 6/13/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 6/13/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 6/13/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 6/13/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 6/13/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 6/13/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 6/13/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 6/13/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| HFPO-DA | 6/13/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 4/24/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 4/24/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 4/24/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 4/24/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 4/24/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 8:2 FTS | 4/24/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeS | 4/24/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 4/24/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 4/24/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 4/24/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 4/24/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 4/24/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 4/24/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 4/24/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 4/24/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 4/24/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 4/24/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 4/24/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFHxS | 4/24/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 4/24/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 4/24/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for City of Alamo Heights.
EPA SDWIS, Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID TX0150039 on SDWISSource: EPA SDWIS Federal Reports Search
Texas Drinking Water Authority
Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch is the primacy agency that licenses and inspects City of Alamo Heights under EPA-delegated authority.
Open TX regulator portalSource: Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch
Violation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2025 | Public Notice | Other | 29 | SDWIS / TX0150039 / 7500 |
| 2024 | LEAD AND COPPER RULE REVISIONS | TT | 4 | SDWIS / TX0150039 / 5200 |
| 2024 | LEAD AND COPPER RULE REVISIONS | RPT | 4 | SDWIS / TX0150039 / 5200 |
| 2019 | Chlorine | MR | 37 | SDWIS / TX0150039 / 0999 |
| 2019 | Lead and Copper Rule | MR | 13 | SDWIS / TX0150039 / 5000 |
| 2018 | Revised Total Coliform Rule | MON | 4 | SDWIS / TX0150039 / 8000 |
| 2014 | Consumer Confidence Rule | Other | 4 | SDWIS / TX0150039 / 7000 |
| 2013 | Coliform (TCR) | MCL | 11 | SDWIS / TX0150039 / 3100 |
| 2013 | E. COLI | MR | 7 | SDWIS / TX0150039 / 3014 |
| 1991 | Coliform (TCR) | Other | 1 | SDWIS / TX0150039 / 3100 |
How City of Alamo Heights Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | City of Alamo Heights | Texas avg | Federal benchmark |
|---|---|---|---|
| Total violations | 118 | 101.5 | SDWA compliance, any non-zero count is a recorded breach |
| Health-based violations | 15 | 22.2 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 93.1% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 7,357 | 4,524 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,351 regulated public water systems in Texas.
Federal MCL reference, Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026) |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
Is City of Alamo Heights water safe to drink? ▼
How many people does City of Alamo Heights serve? ▼
What type of violations does City of Alamo Heights have? ▼
Has PFAS been detected in City of Alamo Heights water? ▼
What water source does City of Alamo Heights use? ▼
Where does this data come from? ▼
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.