Skip to main content
WaterSafeCheck

Houston, TX Tap Water Quality

Water safety reports for all 190 ZIP codes in Houston, Texas

Average Score

87/100

Health Violations

190

ZIP Codes

190

High Lead Risk

60

of 190 ZIP codes

A

About Tap Water in Houston, TX

Tap water in Houston, TX ranks among the best in the state, maintaining a remarkable average water quality score of 87/100 across its 190 ZIP codes. Based on recent EPA Safe Drinking Water Act compliance records, water provided by City of Houston and other municipal suppliers has consistently met or exceeded federal safety standards. This top-tier "A" grade reflects strong infrastructure, diligent monitoring by Texas Commission on Environmental Quality (TCEQ), and low contaminant levels.

The accumulation of 190 health-based violations over the past 5 years highlights systemic challenges within Houston's water infrastructure. When violations occur, it means that drinking water tests revealed contaminant levels exceeding safe limits, triggering mandatory corrective actions by Texas Commission on Environmental Quality (TCEQ). The city relies on surface water, which may require significant treatment upgrades to address these recurring issues.

Additionally, lead exposure risk remains a critical issue for certain neighborhoods. EPA data indicates that 60 out of 190 ZIP codes in Houston are rated as High or Very High risk for lead. This risk is often driven by aging homes with pre-1986 plumbing containing lead solder or service lines. Families in these areas should test their tap water and consider NSF/ANSI 53 certified filters.

⚠ Lead Risk Alert: Some ZIP codes in Houston are rated High or Very High for lead exposure risk based on EPA data. Search your specific ZIP code for a detailed lead level report.

Health-Based Contaminant Violations in Houston

EPA records indicate that the following contaminants have exceeded Safe Drinking Water Act Maximum Contaminant Levels (MCLs) in Houston water systems over the past 5 years.

Fecal Coliform

Note: The presence of a past violation does not necessarily mean current water is unsafe. Utilities are required to take corrective action. Review your Consumer Confidence Report for the latest status.

Water Quality by ZIP Code — Houston, TX

Click any ZIP code for the full water quality report

A
77097

Houston, TX

Score: 98/1001 violation
A
77201

Houston, TX

Score: 98/1001 violation
A
77202

Houston, TX

Score: 98/1001 violation
A
77203

Houston, TX

Score: 98/1001 violation
A
77204

Houston, TX

Score: 98/1001 violation
A
77209

Houston, TX

Score: 98/1001 violation
A
77212

Houston, TX

Score: 98/1001 violation
A
77215

Houston, TX

Score: 98/1001 violation
A
77216

Houston, TX

Score: 98/1001 violation
A
77217

Houston, TX

Score: 98/1001 violation
A
77218

Houston, TX

Score: 98/1001 violation
A
77219

Houston, TX

Score: 98/1001 violation
A
77222

Houston, TX

Score: 98/1001 violation
A
77223

Houston, TX

Score: 98/1001 violation
A
77226

Houston, TX

Score: 98/1001 violation
A
77230

Houston, TX

Score: 98/1001 violation
A
77231

Houston, TX

Score: 98/1001 violation
A
77241

Houston, TX

Score: 98/1001 violation
A
77243

Houston, TX

Score: 98/1001 violation
A
77246

Houston, TX

Score: 98/1001 violation
A
77247

Houston, TX

Score: 98/1001 violation
A
77248

Houston, TX

Score: 98/1001 violation
A
77249

Houston, TX

Score: 98/1001 violation
A
77250

Houston, TX

Score: 98/1001 violation
A
77254

Houston, TX

Score: 98/1001 violation
A
77259

Houston, TX

Score: 98/1001 violation
A
77260

Houston, TX

Score: 98/1001 violation
A
77263

Houston, TX

Score: 98/1001 violation
A
77268

Houston, TX

Score: 98/1001 violation
A
77269

Houston, TX

Score: 98/1001 violation
A
77271

Houston, TX

Score: 98/1001 violation
A
77273

Houston, TX

Score: 98/1001 violation
A
77274

Houston, TX

Score: 98/1001 violation
A
77275

Houston, TX

Score: 98/1001 violation
A
77276

Houston, TX

Score: 98/1001 violation
A
77277

Houston, TX

Score: 98/1001 violation
A
77278

Houston, TX

Score: 98/1001 violation
A
77280

Houston, TX

Score: 98/1001 violation
A
77282

Houston, TX

Score: 98/1001 violation
A
77284

Houston, TX

Score: 98/1001 violation
A
77285

Houston, TX

Score: 98/1001 violation
A
77286

Houston, TX

Score: 98/1001 violation
A
77288

Houston, TX

Score: 98/1001 violation
A
77289

Houston, TX

Score: 98/1001 violation
A
77290

Houston, TX

Score: 98/1001 violation
A
77291

Houston, TX

Score: 98/1001 violation
A
77292

Houston, TX

Score: 98/1001 violation
A
77293

Houston, TX

Score: 98/1001 violation
A
77294

Houston, TX

Score: 98/1001 violation
A
77296

Houston, TX

Score: 98/1001 violation
A
77297

Houston, TX

Score: 98/1001 violation
A
77298

Houston, TX

Score: 98/1001 violation
A
77299

Houston, TX

Score: 98/1001 violation
A
77010

Houston, TX

Score: 94/1001 violation
A
77206

Houston, TX

Score: 94/1001 violation
A
77207

Houston, TX

Score: 94/1001 violation
A
77208

Houston, TX

Score: 94/1001 violation
A
77213

Houston, TX

Score: 94/1001 violation
A
77220

Houston, TX

Score: 94/1001 violation
A
77221

Houston, TX

Score: 94/1001 violation
A
77224

Houston, TX

Score: 94/1001 violation
A
77225

Houston, TX

Score: 94/1001 violation
A
77228

Houston, TX

Score: 94/1001 violation
A
77229

Houston, TX

Score: 94/1001 violation
A
77233

Houston, TX

Score: 94/1001 violation
A
77235

Houston, TX

Score: 94/1001 violation
A
77236

Houston, TX

Score: 94/1001 violation
A
77237

Houston, TX

Score: 94/1001 violation
A
77238

Houston, TX

Score: 94/1001 violation
A
77240

Houston, TX

Score: 94/1001 violation
A
77242

Houston, TX

Score: 94/1001 violation
A
77244

Houston, TX

Score: 94/1001 violation
A
77245

Houston, TX

Score: 94/1001 violation
A
77251

Houston, TX

Score: 94/1001 violation
A
77253

Houston, TX

Score: 94/1001 violation
A
77255

Houston, TX

Score: 94/1001 violation
A
77256

Houston, TX

Score: 94/1001 violation
A
77257

Houston, TX

Score: 94/1001 violation
A
77258

Houston, TX

Score: 94/1001 violation
A
77261

Houston, TX

Score: 94/1001 violation
A
77265

Houston, TX

Score: 94/1001 violation
A
77266

Houston, TX

Score: 94/1001 violation
A
77267

Houston, TX

Score: 94/1001 violation
A
77270

Houston, TX

Score: 94/1001 violation
A
77272

Houston, TX

Score: 94/1001 violation
A
77279

Houston, TX

Score: 94/1001 violation
A
77287

Houston, TX

Score: 94/1001 violation
A
77001

Houston, TX

Score: 89/1001 violation
A
77046

Houston, TX

Score: 89/1001 violation
A
77210

Houston, TX

Score: 89/1001 violation
A
77227

Houston, TX

Score: 89/1001 violation
A
77234

Houston, TX

Score: 89/1001 violation
A
77252

Houston, TX

Score: 89/1001 violation
A
77262

Houston, TX

Score: 89/1001 violation
B
77003

Houston, TX

Score: 84/1001 violation
B
77011

Houston, TX

Score: 84/1001 violation
B
77012

Houston, TX

Score: 84/1001 violation
B
77014

Houston, TX

Score: 84/1001 violation
B
77020

Houston, TX

Score: 84/1001 violation
B
77052

Houston, TX

Score: 84/1001 violation
B
77054

Houston, TX

Score: 84/1001 violation
B
77085

Houston, TX

Score: 84/1001 violation
B
77094

Houston, TX

Score: 84/1001 violation
B
77205

Houston, TX

Score: 84/1001 violation
B
77002

Houston, TX

Score: 79/1001 violation
B
77004

Houston, TX

Score: 79/1001 violation
B
77005

Houston, TX

Score: 79/1001 violation
B
77006

Houston, TX

Score: 79/1001 violation
B
77007

Houston, TX

Score: 79/1001 violation
B
77009

Houston, TX

Score: 79/1001 violation
B
77017

Houston, TX

Score: 79/1001 violation
B
77019

Houston, TX

Score: 79/1001 violation
B
77021

Houston, TX

Score: 79/1001 violation
B
77023

Houston, TX

Score: 79/1001 violation
B
77027

Houston, TX

Score: 79/1001 violation
B
77029

Houston, TX

Score: 79/1001 violation
B
77030

Houston, TX

Score: 79/1001 violation
B
77031

Houston, TX

Score: 79/1001 violation
B
77033

Houston, TX

Score: 79/1001 violation
B
77036

Houston, TX

Score: 79/1001 violation
B
77041

Houston, TX

Score: 79/1001 violation
B
77043

Houston, TX

Score: 79/1001 violation
B
77047

Houston, TX

Score: 79/1001 violation
B
77048

Houston, TX

Score: 79/1001 violation
B
77050

Houston, TX

Score: 79/1001 violation
B
77051

Houston, TX

Score: 79/1001 violation
B
77053

Houston, TX

Score: 79/1001 violation
B
77055

Houston, TX

Score: 79/1001 violation
B
77056

Houston, TX

Score: 79/1001 violation
B
77057

Houston, TX

Score: 79/1001 violation
B
77059

Houston, TX

Score: 79/1001 violation
B
77061

Houston, TX

Score: 79/1001 violation
B
77063

Houston, TX

Score: 79/1001 violation
B
77064

Houston, TX

Score: 79/1001 violation
B
77065

Houston, TX

Score: 79/1001 violation
B
77067

Houston, TX

Score: 79/1001 violation
B
77068

Houston, TX

Score: 79/1001 violation
B
77069

Houston, TX

Score: 79/1001 violation
B
77071

Houston, TX

Score: 79/1001 violation
B
77073

Houston, TX

Score: 79/1001 violation
B
77078

Houston, TX

Score: 79/1001 violation
B
77081

Houston, TX

Score: 79/1001 violation
B
77083

Houston, TX

Score: 79/1001 violation
B
77086

Houston, TX

Score: 79/1001 violation
B
77091

Houston, TX

Score: 79/1001 violation
B
77092

Houston, TX

Score: 79/1001 violation
B
77095

Houston, TX

Score: 79/1001 violation
B
77098

Houston, TX

Score: 79/1001 violation
B
77008

Houston, TX

Score: 74/1001 violation
B
77013

Houston, TX

Score: 74/1001 violation
B
77015

Houston, TX

Score: 74/1001 violation
B
77016

Houston, TX

Score: 74/1001 violation
B
77018

Houston, TX

Score: 74/1001 violation
B
77022

Houston, TX

Score: 74/1001 violation
B
77024

Houston, TX

Score: 74/1001 violation
B
77025

Houston, TX

Score: 74/1001 violation
B
77026

Houston, TX

Score: 74/1001 violation
B
77028

Houston, TX

Score: 74/1001 violation
B
77032

Houston, TX

Score: 74/1001 violation
B
77034

Houston, TX

Score: 74/1001 violation
B
77035

Houston, TX

Score: 74/1001 violation
B
77037

Houston, TX

Score: 74/1001 violation
B
77038

Houston, TX

Score: 74/1001 violation
B
77039

Houston, TX

Score: 74/1001 violation
B
77040

Houston, TX

Score: 74/1001 violation
B
77042

Houston, TX

Score: 74/1001 violation
B
77044

Houston, TX

Score: 74/1001 violation
B
77045

Houston, TX

Score: 74/1001 violation
B
77049

Houston, TX

Score: 74/1001 violation
B
77058

Houston, TX

Score: 74/1001 violation
B
77060

Houston, TX

Score: 74/1001 violation
B
77062

Houston, TX

Score: 74/1001 violation
B
77066

Houston, TX

Score: 74/1001 violation
B
77070

Houston, TX

Score: 74/1001 violation
B
77072

Houston, TX

Score: 74/1001 violation
B
77074

Houston, TX

Score: 74/1001 violation
B
77075

Houston, TX

Score: 74/1001 violation
B
77076

Houston, TX

Score: 74/1001 violation
B
77077

Houston, TX

Score: 74/1001 violation
B
77079

Houston, TX

Score: 74/1001 violation
B
77080

Houston, TX

Score: 74/1001 violation
B
77082

Houston, TX

Score: 74/1001 violation
B
77084

Houston, TX

Score: 74/1001 violation
B
77087

Houston, TX

Score: 74/1001 violation
B
77088

Houston, TX

Score: 74/1001 violation
B
77089

Houston, TX

Score: 74/1001 violation
B
77090

Houston, TX

Score: 74/1001 violation
B
77093

Houston, TX

Score: 74/1001 violation
B
77096

Houston, TX

Score: 74/1001 violation
B
77099

Houston, TX

Score: 74/1001 violation

Frequently Asked Questions — Houston Water Quality

Is tap water safe to drink in Houston, TX?+
Yes — tap water in Houston meets all federal EPA standards and earns a A grade. It is generally safe for healthy adults. As always, running your tap for 30 seconds before use and using a filter adds extra protection for vulnerable populations.
What is the water quality score for Houston?+
The average water quality score across 190 ZIP codes in Houston, TX is 87/100. Scores are derived from EPA violation history, lead levels, enforcement actions, and infrastructure risk indicators. Individual ZIP codes may vary — search your specific ZIP above for a personalized report.
Does Houston have lead in its tap water?+
60 out of 190 ZIP codes in Houston are rated High or Very High for lead exposure risk. Older homes built before 1986 may have lead service lines or plumbing fixtures. Residents should run their tap for 30 seconds before use and consider a certified NSF/ANSI 53 lead filter.
How do I get the water quality report for Houston?+
Each ZIP code in Houston has a full water quality report on this site — click any ZIP code below. You can also get the annual Consumer Confidence Report (CCR) from your local water utility. The CCR is required to be published every year by July 1 and contains actual contaminant measurements and violation history.
Where does Houston's tap water come from?+
Tap water in Houston, TX primarily comes from surface water. Surface water systems treat water from rivers, lakes, or reservoirs using filtration, sedimentation, and disinfection before it reaches your tap.

Looking for water quality in other cities in Texas?

View All Cities in Texas →