No open health-based violations on EPA record in the last 10 years.
Serves about 456 people (358 connections) with surface water from its own intake.
From EPA's record for OK1021502. PurityMap is independent of Delaware.
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10 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2025 | Carbon, total | 0.77 RATIO | TT | Archived |
| From April 2025 | Carbon, total | 0.42 RATIO | TT | Archived |
| From January 2025 | Carbon, total | – | TT | Archived |
| From October 2024 | Carbon, total | 0.27 RATIO | TT | Archived |
| From July 2024 | Carbon, total | 0.26 RATIO | TT | Archived |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From April 2024 | Carbon, total | 0.58 RATIO | TT | Archived |
| From January 2019 | Carbon, total | – | TT | Resolved |
| From October 2018 | Carbon, total | – | TT | Resolved |
| From July 2018 | Carbon, total | – | TT | Resolved |
| From April 2018 | Carbon, total | – | TT | Resolved |
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 →Delaware's phone number on EPA record is 918-467-3218. Its mailing address is Shannon Duncan, Chairman, P.O. Box 277, DELAWARE, OK 74027.
According to EPA's record, Delaware uses surface water from its own intake.
EPA's record shows 10 health-based violations for Delaware in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 171 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Delaware's latest lead and copper round, which ended in June 2026, was 0.1 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Delaware. Its phone number on EPA record is 918-467-3218. Its mailing address on EPA record is Shannon Duncan, Chairman, P.O. Box 277, DELAWARE, OK 74027. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.