No open health-based violations on EPA record in the last 10 years.
Serves about 88 people (35 connections) with surface water bought from Eureka Springs Waterworks and Carroll-Boone Water District.
From EPA's record for ART001101. PurityMap is independent of Grassy Knob Subordinate SD.
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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 October 2023 | Stage 1 Disinfectants and Disinfection Byproducts Rule | – | – | 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.
Get PurityMap updates about this water system.
Follow this water →Grassy Knob Subordinate SD's phone number on EPA record is 479-445-8066. Its mailing address is 1608 N RHONDA DR, FAYETTEVILLE, AR 72703.
According to EPA's record, Grassy Knob Subordinate SD uses surface water bought from Eureka Springs Waterworks and Carroll-Boone Water District.
EPA's record shows 1 health-based violation for Grassy Knob Subordinate SD in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 19 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Grassy Knob Subordinate SD's latest lead and copper round, which ended in December 2019, was 3 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Grassy Knob Subordinate SD. Its phone number on EPA record is 479-445-8066. Its mailing address on EPA record is 1608 N RHONDA DR, FAYETTEVILLE, AR 72703. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.