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Meridian, ID Tap Water Quality 2026

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

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

Main Utility: Meridian Water Dept PWSID: ID4010097 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 3.90 ppb, 26% of the action level and no violations are open. PFAS was detected below the federal limit.

A

Meridian earns an A for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 3.90 ppb — 26% of the federal action level
PFAS detected below the federal limit
3 violations since 2015, 0 health-based
No violations currently open
Meridian's lead level vs. all Idaho community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 3.90 ppb — 26% of the federal action level
✓ Lower lead than 25% of Idaho utilities
Population Served
112650
~47953 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
3 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
26% of EPA action level
3.90 ppb
Action level: 15 ppb
The 90th-percentile lead result is 3.90 ppb, 26% 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
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2016 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2016 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

3 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Meridian Water Dept
PWSID ID4010097
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 112,650
Service connections 47,953
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Meridian tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 3.90 ppb, 26% of the action level.
Does Meridian water have PFAS? ▼
PFAS was detected but stayed below the federal limit.
Who supplies water to Meridian? ▼
Meridian Water Dept (PWSID ID4010097), one of 2 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2023-07-26. Inspectors recorded 1 significant deficiency.

What Should Meridian 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.

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