CITY OF UVALDE

Q: Is CITY OF UVALDE water safe to drink?

CITY OF UVALDE (PWS ID: TX2320002) has 123 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 17,450 people using Groundwater sources.

Q: How many people does CITY OF UVALDE serve?

CITY OF UVALDE serves 17,450 people in UVALDE, Texas. It is a Local-owned system using Groundwater water sources with 5,606 service connections.

Q: What type of violations does CITY OF UVALDE have?

CITY OF UVALDE has 123 total violations: 0 health-based violations (MCL exceedances or treatment failures), 105 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Q: Has PFAS been detected in CITY OF UVALDE water?

No. CITY OF UVALDE was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.

Q: What water source does CITY OF UVALDE use?

CITY OF UVALDE uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Q: Where does this data come from?

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Reviewed byPlainWater Editorial, Drinking Water Quality Editorial Team · June 4, 2026

PWS ID: TX2320002 · UVALDE, Texas 78802-0799

CITY OF UVALDE serves 17,450 people in UVALDE, Texas using Groundwater water sources. It has 123 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: CITY OF UVALDE

CITY OF UVALDE is a local-owned community water system that delivers drinking water to 17,450 residents in UVALDE, Texas (Uvalde County) through 5,606 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 123 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 105 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Public Notice, recorded in 16 violations (Other). 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. CITY OF UVALDE's 123 violations sit above the Texas average. Statewide, 1,068 of 1,147 UCMR5-tested systems have reported PFAS detections (93.1%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served

17,450

Total Violations

123

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Community
Owner Type: Local
Connections: 5,606
County: Uvalde
School/Daycare: No
MCL Violations: 0
Monitoring Violations: 105
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Public Notice	Other	16	2015
Nitrate	MR	12	2013
E. COLI	MR	12	2022
Endrin	MR	4	2011
BHC-GAMMA	MR	4	2011
Methoxychlor	MR	4	2011
Toxaphene	MR	4	2011
Di(2-ethylhexyl) adipate	MR	4	2011
Di(2-ethylhexyl) phthalate	MR	4	2011
Hexachlorocyclopentadiene	MR	4	2011
Atrazine	MR	4	2011
LASSO	MR	4	2011
Heptachlor	MR	4	2011
Heptachlor epoxide	MR	4	2011
HEXACHLOROBENZENE	MR	4	2011
Pentachlorophenol	MR	4	2011
Coliform (TCR)	MR	4	2006
Simazine	MR	4	2011
Chlordane	MR	4	2011
Benzo(a)pyrene	MR	4	2011
Consumer Confidence Rule	Other	2	2023
Picloram	MR	1	2021
2,4,5-TP	MR	1	2021
CYANIDE	MR	1	2021
Aldicarb	MR	1	2021
Dinoseb	MR	1	2021
ETHYLENE DIBROMIDE	MR	1	2021
OXAMYL	MR	1	2021
Carbofuran	MR	1	2021
Aldicarb sulfoxide	MR	1	2021

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 450 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
PFHpS	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
8:2 FTS	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFMPA	9/16/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFPeA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFMBA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
4:2 FTS	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeS	9/16/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFHxS	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFBS	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFOS	9/16/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
lithium	9/16/2024	<9 µg/L	9 µg/L	Not Detected
PFTA	9/16/2024	<0.008 µg/L	0.008 µg/L	Not Detected
PFTrDA	9/16/2024	<0.007 µg/L	0.007 µg/L	Not Detected
NFDHA	9/16/2024	<0.02 µg/L	0.02 µg/L	Not Detected
NEtFOSAA	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFNA	9/16/2024	<0.004 µg/L	0.004 µg/L	Not Detected
NMeFOSAA	9/16/2024	<0.006 µg/L	0.006 µg/L	Not Detected
PFOA	9/16/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFDA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFUnA	9/16/2024	<0.002 µg/L	0.002 µg/L	Not Detected
9Cl-PF3ONS	9/16/2024	<0.002 µg/L	0.002 µg/L	Not Detected
ADONA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
HFPO-DA	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
11Cl-PF3OUdS	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
6:2 FTS	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFPeA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFMPA	9/16/2024	<0.004 µg/L	0.004 µg/L	Not Detected
8:2 FTS	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
4:2 FTS	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
6:2 FTS	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFMBA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
HFPO-DA	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
9Cl-PF3ONS	9/16/2024	<0.002 µg/L	0.002 µg/L	Not Detected
11Cl-PF3OUdS	9/16/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFUnA	9/16/2024	<0.002 µg/L	0.002 µg/L	Not Detected
PFHxA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFDA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFOA	9/16/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFBS	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
ADONA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	9/16/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFTrDA	9/16/2024	<0.007 µg/L	0.007 µg/L	Not Detected
NMeFOSAA	9/16/2024	<0.006 µg/L	0.006 µg/L	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 UVALDE.

Federal Source of Truth

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 TX2320002 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Texas Drinking Water Authority

Texas Commission on Environmental Quality (TCEQ) — Drinking Water Watch is the primacy agency that licenses and inspects CITY OF UVALDE under EPA-delegated authority.

Open TX regulator portal

Source: 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
2023	Consumer Confidence Rule	Other	2	SDWIS / TX2320002 / 7000
2022	E. COLI	MR	12	SDWIS / TX2320002 / 3014
2021	Picloram	MR	1	SDWIS / TX2320002 / 2040
2021	2,4,5-TP	MR	1	SDWIS / TX2320002 / 2110
2021	CYANIDE	MR	1	SDWIS / TX2320002 / 1024
2021	Aldicarb	MR	1	SDWIS / TX2320002 / 2047
2021	Dinoseb	MR	1	SDWIS / TX2320002 / 2041
2021	ETHYLENE DIBROMIDE	MR	1	SDWIS / TX2320002 / 2946
2021	OXAMYL	MR	1	SDWIS / TX2320002 / 2036
2021	Carbofuran	MR	1	SDWIS / TX2320002 / 2046
2021	Aldicarb sulfoxide	MR	1	SDWIS / TX2320002 / 2043
2021	Dalapon	MR	1	SDWIS / TX2320002 / 2031
2021	2,4-D	MR	1	SDWIS / TX2320002 / 2105
2021	Aldicarb sulfone	MR	1	SDWIS / TX2320002 / 2044
2021	1,2-DIBROMO-3-CHLOROPROPANE	MR	1	SDWIS / TX2320002 / 2931

How CITY OF UVALDE Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric	CITY OF UVALDE	Texas avg	Federal benchmark
Total violations	123	101.5	SDWA compliance — any non-zero count is a recorded breach
Health-based violations	0	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	17,450	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
Nitrate (as N)	10 mg/L	Acute health risk for infants

Frequently Asked Questions

Is CITY OF UVALDE water safe to drink? ▼

CITY OF UVALDE (PWS ID: TX2320002) has 123 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 17,450 people using Groundwater sources.

How many people does CITY OF UVALDE serve? ▼

CITY OF UVALDE serves 17,450 people in UVALDE, Texas. It is a Local-owned system using Groundwater water sources with 5,606 service connections.

What type of violations does CITY OF UVALDE have? ▼

CITY OF UVALDE has 123 total violations: 0 health-based violations (MCL exceedances or treatment failures), 105 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in CITY OF UVALDE water? ▼

No. CITY OF UVALDE was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.

What water source does CITY OF UVALDE use? ▼

CITY OF UVALDE uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Where does this data come from? ▼

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

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