Dallas Water Utility
EPA ID: TX0570004 · 1,356,479 people served · 138 ZIP codes
Records for Dallas Water Utility show 3 violations over the monitored period, with every finding addressed and officially closed — the provider, which serves approximately 1,356,479 people, carries no outstanding enforcement actions in the current EPA dataset and meets all applicable drinking water requirements.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 5 (2022) to 140 (2024). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Dallas Water Utility Source: EPA SDWIS service area boundaries.
Service area boundary — Grade A
Service Area Demographics
The Dallas Water Utility serves a community with a median household income of $70,314 and an estimated 2,085,423 residents across its service area. Approximately 57% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 49% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Dallas Water Utility's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Dallas County, Texas rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Dallas Water Utility compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 1 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Lead and Copper Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 520 detections recorded. 116 exceed federal EPA limits (4 ppt for PFOA/PFOS). 3 exceed state limits.
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in Texas
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Dallas Water Utility (EPA ID: TX0570004) is a community water system in Texas that serves approximately 1,356,479 people from surface water sources.
This system provides water to 138 ZIP codes across 13 communities.
Average Home Safety Score: A (94/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| May 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 1 | No |
| Lead and Copper Rule | Treatment Failure | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 75201 | 0.00109 mg/L | No | N/A |
| 75202 | 0.00109 mg/L | No | N/A |
| 75203 | 0.00109 mg/L | No | N/A |
| 75204 | 0.00109 mg/L | No | N/A |
| 75205 | 0.00109 mg/L | No | N/A |
| 75206 | 0.00109 mg/L | No | N/A |
| 75207 | 0.00109 mg/L | No | N/A |
| 75208 | 0.00109 mg/L | No | N/A |
| 75209 | 0.00109 mg/L | No | N/A |
| 75210 | 0.00109 mg/L | No | N/A |
| 75211 | 0.00109 mg/L | No | N/A |
| 75212 | 0.00109 mg/L | No | N/A |
| 75214 | 0.00109 mg/L | No | N/A |
| 75215 | 0.00109 mg/L | No | N/A |
| 75216 | 0.00109 mg/L | No | N/A |
| 75217 | 0.00109 mg/L | No | N/A |
| 75218 | 0.00109 mg/L | No | N/A |
| 75219 | 0.00109 mg/L | No | N/A |
| 75220 | 0.00109 mg/L | No | N/A |
| 75221 | 0.00109 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 67 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 71 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 138 ZIP codes:
75001 · 75007 · 75041 · 75042 · 75050 75051 · 75075 · 75080 · 75093 · 75104 75115 · 75134 · 75146 · 75149 · 75150 75159 · 75180 · 75181 · 75201 · 75202 75203 · 75204 · 75205 · 75206 · 75207 75208 · 75209 · 75210 · 75211 · 75212 75214 · 75215 · 75216 · 75217 · 75218 75219 · 75220 · 75221 · 75222 · 75223 75224 · 75225 · 75226 · 75227 · 75228 75229 · 75230 · 75231 · 75232 · 75233 75234 · 75235 · 75236 · 75237 · 75238 75240 · 75241 · 75242 · 75243 · 75244 75245 · 75246 · 75247 · 75248 · 75249 75250 · 75251 · 75252 · 75253 · 75254 75258 · 75260 · 75261 · 75262 · 75263 75264 · 75265 · 75266 · 75267 · 75270 75275 · 75277 · 75283 · 75284 · 75285 75286 · 75287 · 75301 · 75303 · 75310 75312 · 75313 · 75315 · 75320 · 75323 75326 · 75334 · 75336 · 75339 · 75340 75342 · 75343 · 75344 · 75353 · 75354 75355 · 75356 · 75357 · 75358 · 75359 75360 · 75364 · 75367 · 75368 · 75370 75371 · 75372 · 75373 · 75374 · 75376 75378 · 75379 · 75380 · 75381 · 75382 75386 · 75387 · 75388 · 75389 · 75390 75391 · 75392 · 75393 · 75394 · 75395 75396 · 75397 · 75398
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Dallas Water Utility (TX0570004) on EPA.gov.
Frequently Asked Questions
Is Dallas Water Utility water safe to drink?
Dallas Water Utility has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does Dallas Water Utility serve?
Dallas Water Utility serves approximately 1,356,479 people across 138 ZIP codes in Texas.
Where does Dallas Water Utility get its water?
The primary water source is surface water.
Contact Your Water Utility
Public-record contact information for the water utility serving this system. Use these channels to request water quality reports, ask about service, or report issues directly.
Contact information from City of Dallas Water Utilities Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility, does not act as its agent, and does not provide customer support for it. Contact details shown are public-record information from CCR filings. For service issues, contact the utility directly using the information above.
Water Source & Treatment
Where this water originates and how it's treated before reaching your tap.
Source: City of Dallas Water Utilities Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility. Treatment and source data are sourced from the utility's published CCR filings.
TCEQ completed an assessment of Dallas’ source water and results indicate that some of our sources are susceptible to certain contaminants.
Treatment regime
How this utility classifies its treatment process and what each reported treatment chemical does.
Treatment chemicals and what each one does
Chemical names are reported verbatim by the utility. Purpose categories are ZipCheckup annotations based on standard drinking-water treatment practice.
Treatment classification and chemical list sourced from City of Dallas Water Utilities Consumer Confidence Report.
Treatment intensity is a ZipCheckup-derived classification based on the chemicals and processes the utility reports. Chemicals and contamination sources are taken verbatim from the utility's CCR filing. Routine federal monitoring and contaminant testing shown elsewhere on this page determine whether the water meets safety standards, not the treatment classification.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
DWU’s service line inventory contains no known lead service lines. Property owners are responsible for maintaining the private portion of the water service line, including replacing any lead plumbing inside their premises.
Lead Service Line Replacement Tracker
This water utility's lead service line (LSL) replacement program is tracked from public Consumer Confidence Report filings. Email signup notifies subscribers when the utility files an updated replacement plan or progress milestone.
City of Dallas Water Utilities
ZipCheckup is not affiliated with this water utility. LSL replacement-program data is sourced from public CCR filings published by the utility. Subscription notifications are based on automated parsing of subsequent CCR releases.
Learn more about Lead and Copper Rule replacement requirements →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Dallas Water Utility (EPA ID: TX0570004) — request the latest Consumer Confidence Report or ask about specific contaminants.