No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting October 2024.
Serves about 257 people (163 connections) with groundwater bought from Iowa Lakes Regional Water.
From EPA's record for IA7450019. PurityMap is independent of Mallard Water Supply.
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18 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2024 | Arsenic | 0.013 mg/L | 0.010 mg/L | Resolved |
| From July 2024 | Arsenic | 0.014 mg/L | 0.010 mg/L | Resolved |
| From April 2024 | Arsenic | 0.013 mg/L | 0.010 mg/L | Resolved |
| From January 2024 | Arsenic | 0.01 mg/L | 0.010 mg/L | Resolved |
| From April 2022 | Arsenic | 0.011 mg/L | 0.010 mg/L | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From January 2022 | Arsenic | 0.012 mg/L | 0.010 mg/L | Resolved |
| From October 2021 | Arsenic | 0.014 mg/L | 0.010 mg/L | Resolved |
| From July 2021 | Arsenic | 0.016 mg/L | 0.010 mg/L | Resolved |
| From April 2021 | Arsenic | 0.014 mg/L | 0.010 mg/L | Resolved |
| From January 2021 | Arsenic | 0.014 mg/L | 0.010 mg/L | Resolved |
| From October 2020 | Arsenic | 0.012 mg/L | 0.010 mg/L | Resolved |
| From July 2020 | Arsenic | 0.016 mg/L | 0.010 mg/L | Archived |
| From April 2020 | Arsenic | 0.018 mg/L | 0.010 mg/L | Archived |
| From January 2020 | Arsenic | 0.022 mg/L | 0.010 mg/L | Archived |
| From October 2019 | Arsenic | 0.017 mg/L | 0.010 mg/L | Archived |
| From July 2019 | Arsenic | 0.012 mg/L | 0.010 mg/L | Archived |
| From April 2019 | Arsenic | 0.013 mg/L | 0.010 mg/L | Archived |
| From October 2017 | Arsenic | 0.016 mg/L | 0.010 mg/L | Archived |
No lab results for other contaminants (like PFAS) are on file for this system. EPA required that testing from systems serving more than 3,300 people, plus a sample of smaller ones.
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
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Follow this water →Mallard Water Supply's phone number on EPA record is 712-425-3529. Its mailing address is ATTN SCOTT DAVIS WATER SUPT, 605 INMAN, MALLARD, IA 50562.
According to EPA's record, Mallard Water Supply uses groundwater bought from Iowa Lakes Regional Water.
EPA's record shows 18 health-based violations for Mallard Water Supply in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting October 2024. EPA also lists 2 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Mallard Water Supply's latest lead and copper round, which ended in June 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Mallard Water Supply. Its phone number on EPA record is 712-425-3529. Its mailing address on EPA record is ATTN SCOTT DAVIS WATER SUPT, 605 INMAN, MALLARD, IA 50562. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.