1 open health-based violation on EPA record.
Serves about 245 people (100 connections) with groundwater from its own wells.
From EPA's record for AR0000123. PurityMap is independent of Black Oak Waterworks.
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From April 2026 | Lead and copper rule revisions | – | – | Unaddressed |
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.
Get PurityMap updates about this water system.
Follow this water →Black Oak Waterworks's phone number on EPA record is 870-919-3078. Its mailing address is 1309 ROSS LEIGHANN ST, LAKE CITY, AR 72437-0000.
According to EPA's record, Black Oak Waterworks uses groundwater from its own wells.
EPA's record shows 1 health-based violation for Black Oak Waterworks in the 10 years to July 9, 2026. EPA's record lists 1 open health-based violation. EPA also lists 8 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Black Oak Waterworks's latest lead and copper round, which ended in December 2004, was 7 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Black Oak Waterworks. Its phone number on EPA record is 870-919-3078. Its mailing address on EPA record is 1309 ROSS LEIGHANN ST, LAKE CITY, AR 72437-0000. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.