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Mallard, IA Tap Water Quality 2026

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

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

Main Utility: Mallard Water Supply PWSID: IA7450019 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS has never been sampled at this system.

C

Mallard earns a C for water quality

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

Lead: not detected
PFAS never sampled at this system
22 violations since 2015, 18 health-based
No violations currently open
Mallard's lead level vs. all Iowa community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Iowa utilities
Population Served
251
~163 connections
Water Source
Groundwater
Purchased groundwater from another system — SDWIS source code GWP
Active Violations
0
22 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
153.8% of EPA action level
2,000 ppb
Action level: 1,300 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Unaddressed
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.014 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.01 MG/L 0.010 mg/L 2024 Resolved
Arsenic MCL EXCEEDANCE 0.011 MG/L 0.010 mg/L 2022 Resolved
Arsenic MCL EXCEEDANCE 0.012 MG/L 0.010 mg/L 2022 Resolved
Arsenic MCL EXCEEDANCE 0.014 MG/L 0.010 mg/L 2021 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2021 Resolved
Arsenic MCL EXCEEDANCE 0.014 MG/L 0.010 mg/L 2021 Resolved
Arsenic MCL EXCEEDANCE 0.014 MG/L 0.010 mg/L 2021 Resolved
Arsenic MCL EXCEEDANCE 0.012 MG/L 0.010 mg/L 2020 Resolved
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2020 Archived
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2020 Archived
Arsenic MCL EXCEEDANCE 0.022 MG/L 0.010 mg/L 2020 Archived
Arsenic MCL EXCEEDANCE 0.017 MG/L 0.010 mg/L 2019 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2019 Resolved
Arsenic MCL EXCEEDANCE 0.012 MG/L 0.010 mg/L 2019 Archived
Arsenic MCL EXCEEDANCE 0.013 MG/L 0.010 mg/L 2019 Archived
Arsenic MCL EXCEEDANCE 0.016 MG/L 0.010 mg/L 2017–2018 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2016 Resolved
TTHM MONITORING AND REPORTING — 0.080 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

22 violations are on record since 2015, of which 18 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Mallard Water Supply
PWSID IA7450019
Water source Groundwater — Purchased groundwater from another system — SDWIS source code GWP
Population served 251
Service connections 163
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Mallard tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Mallard 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 Mallard? ▼
Mallard Water Supply (PWSID IA7450019). Groundwater. Purchased groundwater from another system — SDWIS source code GWP
When was this system last inspected? ▼
It was last inspected on 2025-03-18. No significant deficiencies were recorded.

What Should Mallard 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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