States ›Nevada ›Douglas County ›Topaz Lake

Topaz Lake, NV Tap Water Quality 2026

Water quality report for Topaz Lake, NV — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Topaz Lake's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Topaz Lake Water Co Inc PWSID: NV0000070 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 3.00 ppb, 20% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Topaz Lake earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 3.00 ppb — 20% of the federal action level
PFAS never sampled at this system
5 violations since 2015, 4 health-based
No violations currently open
Topaz Lake's lead level vs. all Nevada community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 3.00 ppb — 20% of the federal action level
✓ Lower lead than 24% of Nevada utilities
Population Served
157
~19 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
5 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
20% of EPA action level
3.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 3.00 ppb, 20% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Nitrate MONITORING AND REPORTING — 10 mg/L 2024 Resolved
Tetrachloroethylene MCL EXCEEDANCE 9 UG/L 0.005 mg/L 2018 Resolved
Tetrachloroethylene MCL EXCEEDANCE 8.4 UG/L 0.005 mg/L 2018 Resolved
Tetrachloroethylene MCL EXCEEDANCE 0.01 MG/L 0.005 mg/L 2018 Resolved
Tetrachloroethylene MCL EXCEEDANCE 0.01 MG/L 0.005 mg/L 2017 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

5 violations are on record since 2015, of which 4 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Topaz Lake Water Co Inc
PWSID NV0000070
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 157
Service connections 19
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Topaz Lake tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 3.00 ppb, 20% of the action level.
Does Topaz Lake water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Topaz Lake? ▼
Topaz Lake Water Co Inc (PWSID NV0000070). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2023-08-31. Inspectors recorded 3 significant deficiencies.

What Should Topaz Lake Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in Nevada

Gardnerville Ranchos, Nv Tap Water Quality 2026 Douglas Gardnerville, Nv Tap Water Quality 2026 Douglas Indian Hills, Nv Tap Water Quality 2026 Douglas Johnson Lane, Nv Tap Water Quality 2026 Douglas Minden, Nv Tap Water Quality 2026 Douglas Kingsbury, Nv Tap Water Quality 2026 Douglas