CITY OF CLYDE

Q: Is CITY OF CLYDE water safe to drink?

CITY OF CLYDE (PWS ID: TX0300002) has 228 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 10 PFAS compounds found. This system serves 3,820 people using Surface Water sources.

Q: How many people does CITY OF CLYDE serve?

CITY OF CLYDE serves 3,820 people in CLYDE, Texas. It is a Local-owned system using Surface Water water sources with 1,708 service connections.

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

CITY OF CLYDE has 228 total violations: 121 health-based violations (MCL exceedances or treatment failures), 85 monitoring/reporting violations, and 35 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

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

Yes. UCMR5 testing detected 10 PFAS compounds in CITY OF CLYDE's water supply: PFBA, PFPeA, PFHxS, PFOS, lithium, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.

Q: What water source does CITY OF CLYDE use?

CITY OF CLYDE uses Surface Water 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: TX0300002 · CLYDE, Texas 79510-1155

CITY OF CLYDE serves 3,820 people in CLYDE, Texas using Surface Water water sources. It has 228 recorded EPA violations, including 121 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (10 compounds found).

Water Quality Snapshot: CITY OF CLYDE

CITY OF CLYDE is a local-owned community water system that delivers drinking water to 3,820 residents in CLYDE, Texas (Callahan County) through 1,708 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 228 total violations for this system , of which 121 (53%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 85 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 TTHM, recorded in 47 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 10 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 15.1 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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 CLYDE's 228 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.

PFAS Detected

10 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served

3,820

Total Violations

228

Health-Based Violations

121

Water Source

Surface Water

System Details

System Type: Community
Owner Type: Local
Connections: 1,708
County: Callahan
School/Daycare: No
MCL Violations: 86
Monitoring Violations: 85
Treatment Tech Violations: 35

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
TTHM	MCL	47	2025
Total Haloacetic Acids (HAA5)	MCL	39	2025
Interim Enhanced Surface Water Treatment Rule	TT	35	2024
Public Notice	Other	10	2025
Consumer Confidence Rule	Other	4	2015
1,2,4-Trichlorobenzene	MR	3	2013
Xylenes, Total	MR	3	2013
DICHLOROMETHANE	MR	3	2013
o-Dichlorobenzene	MR	3	2013
1,1,1-Trichloroethane	MR	3	2013
Carbon tetrachloride	MR	3	2013
Trichloroethylene	MR	3	2013
1,1,2-Trichloroethane	MR	3	2013
CHLOROBENZENE	MR	3	2013
Benzene	MR	3	2013
Toluene	MR	3	2013
Ethylbenzene	MR	3	2013
Styrene	MR	3	2013
cis-1,2-Dichloroethylene	MR	3	2013
p-Dichlorobenzene	MR	3	2013
Vinyl chloride	MR	3	2013
1,1-Dichloroethylene	MR	3	2013
1,2-Dichloroethane	MR	3	2013
1,2-Dichloropropane	MR	3	2013
Tetrachloroethylene	MR	3	2013
trans-1,2-Dichloroethylene	MR	3	2013
Surface Water Treatment Rule	MR	2	2004
Lead and Copper Rule	MR	2	2019
Fluoride	MR	1	2011
BHC-GAMMA	MR	1	2011

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 23 of 180 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
6:2 FTS	9/9/2025	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	9/9/2025	0.0076 µg/L	0.005 µg/L	Detected
HFPO-DA	9/9/2025	<0.005 µg/L	0.005 µg/L	Not Detected
9Cl-PF3ONS	9/9/2025	<0.002 µg/L	0.002 µg/L	Not Detected
11Cl-PF3OUdS	9/9/2025	<0.005 µg/L	0.005 µg/L	Not Detected
PFNA	9/9/2025	<0.004 µg/L	0.004 µg/L	Not Detected
ADONA	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
8:2 FTS	9/9/2025	<0.005 µg/L	0.005 µg/L	Not Detected
PFMPA	9/9/2025	<0.004 µg/L	0.004 µg/L	Not Detected
PFPeA	9/9/2025	0.0062 µg/L	0.003 µg/L	Detected
PFMBA	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxS	9/9/2025	0.0087 µg/L	0.003 µg/L	Detected
NFDHA	9/9/2025	<0.02 µg/L	0.02 µg/L	Not Detected
4:2 FTS	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
PFOS	9/9/2025	0.0080 µg/L	0.004 µg/L	Detected
PFPeS	9/9/2025	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpS	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
lithium	9/9/2025	13.4000 µg/L	9 µg/L	Detected
PFTA	9/9/2025	<0.008 µg/L	0.008 µg/L	Not Detected
NMeFOSAA	9/9/2025	<0.006 µg/L	0.006 µg/L	Not Detected
NEtFOSAA	9/9/2025	<0.005 µg/L	0.005 µg/L	Not Detected
PFHpA	9/9/2025	0.0034 µg/L	0.003 µg/L	Detected
PFOA	9/9/2025	<0.004 µg/L	0.004 µg/L	Not Detected
PFDA	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	9/9/2025	0.0069 µg/L	0.003 µg/L	Detected
PFUnA	9/9/2025	<0.002 µg/L	0.002 µg/L	Not Detected
PFBS	9/9/2025	0.0034 µg/L	0.003 µg/L	Detected
PFTrDA	9/9/2025	<0.007 µg/L	0.007 µg/L	Not Detected
4:2 FTS	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
8:2 FTS	9/9/2025	<0.005 µg/L	0.005 µg/L	Not Detected
PFMPA	9/9/2025	<0.004 µg/L	0.004 µg/L	Not Detected
PFBS	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
PFMBA	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
6:2 FTS	9/9/2025	<0.005 µg/L	0.005 µg/L	Not Detected
NEtFOSAA	9/9/2025	<0.005 µg/L	0.005 µg/L	Not Detected
PFPeA	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
PFTrDA	9/9/2025	<0.007 µg/L	0.007 µg/L	Not Detected
PFTA	9/9/2025	<0.008 µg/L	0.008 µg/L	Not Detected
lithium	9/9/2025	<9 µg/L	9 µg/L	Not Detected
PFHpS	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeS	9/9/2025	<0.004 µg/L	0.004 µg/L	Not Detected
NFDHA	9/9/2025	<0.02 µg/L	0.02 µg/L	Not Detected
NMeFOSAA	9/9/2025	<0.006 µg/L	0.006 µg/L	Not Detected
PFNA	9/9/2025	<0.004 µg/L	0.004 µg/L	Not Detected
PFHxS	9/9/2025	<0.003 µg/L	0.003 µg/L	Not Detected
PFBA	9/9/2025	0.0053 µg/L	0.005 µg/L	Detected
PFOS	9/9/2025	<0.004 µg/L	0.004 µg/L	Not Detected
PFEESA	9/9/2025	<0.003 µg/L	0.003 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 CLYDE.

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 TX0300002 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 CLYDE 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
2025	TTHM	MCL	47	SDWIS / TX0300002 / 2950
2025	Total Haloacetic Acids (HAA5)	MCL	39	SDWIS / TX0300002 / 2456
2025	Public Notice	Other	10	SDWIS / TX0300002 / 7500
2024	Interim Enhanced Surface Water Treatment Rule	TT	35	SDWIS / TX0300002 / 0300
2019	Lead and Copper Rule	MR	2	SDWIS / TX0300002 / 5000
2015	Consumer Confidence Rule	Other	4	SDWIS / TX0300002 / 7000
2013	1,2,4-Trichlorobenzene	MR	3	SDWIS / TX0300002 / 2378
2013	Xylenes, Total	MR	3	SDWIS / TX0300002 / 2955
2013	DICHLOROMETHANE	MR	3	SDWIS / TX0300002 / 2964
2013	o-Dichlorobenzene	MR	3	SDWIS / TX0300002 / 2968
2013	1,1,1-Trichloroethane	MR	3	SDWIS / TX0300002 / 2981
2013	Carbon tetrachloride	MR	3	SDWIS / TX0300002 / 2982
2013	Trichloroethylene	MR	3	SDWIS / TX0300002 / 2984
2013	1,1,2-Trichloroethane	MR	3	SDWIS / TX0300002 / 2985
2013	CHLOROBENZENE	MR	3	SDWIS / TX0300002 / 2989

How CITY OF CLYDE Compares

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

Metric	CITY OF CLYDE	Texas avg	Federal benchmark
Total violations	228	101.5	SDWA compliance — any non-zero count is a recorded breach
Health-based violations	121	22.2	Indicates a contaminant exceeded a federal MCL
PFAS detection	10 compounds	93.1%	EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served	3,820	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 CLYDE water safe to drink? ▼

CITY OF CLYDE (PWS ID: TX0300002) has 228 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 10 PFAS compounds found. This system serves 3,820 people using Surface Water sources.

How many people does CITY OF CLYDE serve? ▼

CITY OF CLYDE serves 3,820 people in CLYDE, Texas. It is a Local-owned system using Surface Water water sources with 1,708 service connections.

What type of violations does CITY OF CLYDE have? ▼

CITY OF CLYDE has 228 total violations: 121 health-based violations (MCL exceedances or treatment failures), 85 monitoring/reporting violations, and 35 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in CITY OF CLYDE water? ▼

Yes. UCMR5 testing detected 10 PFAS compounds in CITY OF CLYDE's water supply: PFBA, PFPeA, PFHxS, PFOS, lithium, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.

What water source does CITY OF CLYDE use? ▼

CITY OF CLYDE uses Surface Water 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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