Truckee Meadows Water Authority
EPA ID: NV0000190 · 442,000 people served · 31 ZIP codes
While 3 violations did appear in Truckee Meadows Water Authority's five-year monitoring record, none remain unresolved — the utility has returned to full compliance and continues to serve approximately 442,000 residents under all current EPA drinking water standards.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Truckee Meadows Water Authority Source: EPA SDWIS service area boundaries.
Service area boundary — Grade B
Service Area Demographics
The Truckee Meadows Water Authority serves a community with a median household income of $90,953 and an estimated 460,883 residents across its service area. Approximately 42% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Truckee Meadows Water Authority'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 2% of homes in Washoe County, Nevada 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 Truckee Meadows Water Authority compares to EPA limits
What This Means For You
Lead at 1 mg/L (action level) exceeds the EPA maximum of 0.015 mg/L (action level). Brain damage in children, kidney & blood pressure in adults. Consider reverse osmosis filtration.
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment 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. 144 detections recorded. 54 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Lead was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in Nevada
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
TRUCKEE MEADOWS WATER AUTHORITY (EPA ID: NV0000190) is a community water system in Nevada that serves approximately 442,000 people from surface water sources.
This system provides water to 31 ZIP codes across 5 communities.
Average Home Safety Score: B (77/100)
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 |
|---|---|---|---|
| January 1, 2024 | Lead | Monitoring | Resolved |
| October 1, 2023 | Stage 1 DBP Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Lead | Inorganic | 1 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | Yes |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 89431 | 0.002 mg/L | No | N/A |
| 89434 | 0.002 mg/L | No | N/A |
| 89436 | 0.002 mg/L | No | N/A |
| 89441 | 0.002 mg/L | No | N/A |
| 89439 | 0.0013 mg/L | No | N/A |
| 89501 | 0.001 mg/L | No | N/A |
| 89502 | 0.001 mg/L | No | N/A |
| 89503 | 0.001 mg/L | No | N/A |
| 89504 | 0.001 mg/L | No | N/A |
| 89505 | 0.001 mg/L | No | N/A |
| 89506 | 0.001 mg/L | No | N/A |
| 89507 | 0.001 mg/L | No | N/A |
| 89508 | 0.001 mg/L | No | N/A |
| 89509 | 0.001 mg/L | No | N/A |
| 89510 | 0.001 mg/L | No | N/A |
| 89511 | 0.001 mg/L | No | N/A |
| 89512 | 0.001 mg/L | No | N/A |
| 89513 | 0.001 mg/L | No | N/A |
| 89515 | 0.001 mg/L | No | N/A |
| 89519 | 0.001 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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: 18 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 13 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 31 ZIP codes:
89424 · 89431 · 89434 · 89436 · 89439 89441 · 89501 · 89502 · 89503 · 89504 89505 · 89506 · 89507 · 89508 · 89509 89510 · 89511 · 89512 · 89513 · 89515 89519 · 89520 · 89521 · 89523 · 89533 89555 · 89557 · 89570 · 89595 · 89599 89704
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Truckee Meadows Water Authority (NV0000190) on EPA.gov.
Frequently Asked Questions
Is Truckee Meadows Water Authority water safe to drink?
Truckee Meadows Water Authority has recorded 1 health-based violation in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Truckee Meadows Water Authority serve?
Truckee Meadows Water Authority serves approximately 442,000 people across 31 ZIP codes in Nevada.
Where does Truckee Meadows Water Authority 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 Truckee Meadows Water Authority 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: Truckee Meadows Water Authority Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility. Treatment and source data are sourced from the utility's published CCR filings.
A summary of TMWA’s susceptibility to potential sources of contamination was initially provided by Nevada in 2003. The summary of this source water assessment was first included in the TMWA 2004 Water Quality Report.
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 Truckee Meadows Water Authority 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: Above Current MCL
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS compounds were measured above 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 →
PFAS Substances Detected in This System
This water system's Consumer Confidence Report disclosed the following PFAS compounds. Levels are from the utility's most recent reporting cycle.
In April 2024, EPA finalized the first National Primary Drinking Water Regulation for six PFAS. Public water systems have until 2029 to comply. EPA — PFAS regulation overview →
Source: Consumer Confidence Report disclosed by Truckee Meadows Water Authority.
ZipCheckup is not affiliated with this water utility. PFAS detection data is sourced from public Consumer Confidence Reports filed by the utility itself.
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.
Truckee Meadows Water Authority
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:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
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.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
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
Truckee Meadows Water Authority (EPA ID: NV0000190) — request the latest Consumer Confidence Report or ask about specific contaminants.