McArthur/Line 1/ne

What EPA’s and Florida’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves: 56 people
Connections: 14
Water source: Groundwater
Based in: Okeechobee, FL
County: Okeechobee
Owner: Private

The short answer

Nothing in EPA’s and Florida’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. No health-based violations on file since 2016.

What was found

Haloacetic acids (HAA5), total trihalomethanes (TTHM), chromium (total), nitrate, arsenic, fluoride and uranium: Florida’s own results, samples taken from Sept. 16, 2020 to Aug. 31, 2024, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits4

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

55.3ppb

Highest yearly average, 2020 to 2024

2024: not found

Averaged by year, the highest was 55.3 ppb, in 2021, below EPA’s legal limit of 60 ppb. In 2024, the latest year on file, it wasn’t found in its one sample. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 42 ppb, in 2015.

What handles it

No certification claim covers this compound yet.

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

11.6ppb

Highest yearly average, 2020 to 2024

2024: not found

Averaged by year, the highest was 11.6 ppb, in 2020, below EPA’s legal limit of 80 ppb. In 2024, the latest year on file, it wasn’t found in its one sample. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 71.2 ppb, in 2012.

What handles it

NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Chromium (total)

Comes from the source

Below EPA’s limits

2.5ppb

Highest yearly average, 2021

Averaged by year, the highest was 2.5 ppb, in 2021, below EPA’s legal limit of 100 ppb. That is the only year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 12 ppb, in 2015.

What handles it

NSF/ANSI 58 look for “Chromium (Hexavalent) Reduction”
NSF/ANSI 53 look for “Chromium Reduction”

Nitrate

Comes from the source

Below EPA’s limits

0.061ppm

Highest sample; found in 1 of 3

2022: not found

The highest sample, in 2020, was 0.061 ppm, below EPA’s legal limit of 10 ppm. In 2022, the latest year on file, it wasn’t found in its one sample. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.31 ppm, in 2018.

What handles it

NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.

Arsenic
Fluoride
Lead
Uranium

Violations since 2016

No health-based violations on file with EPA since 2016. There are 28 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

Everything else. Haloacetic acids (HAA5), total trihalomethanes (TTHM), chromium (total), nitrate, arsenic, fluoride and uranium results here are Florida’s own from 2020 on, with EPA’s national file for 2012 to 2019. McArthur/Line 1/ne’s own annual report, which it must send you every year, has the contaminants this page does not show.
Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.
Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; Florida’s results run from Sept. 16, 2020 to Aug. 31, 2024.

Testing your own tap

McArthur/Line 1/ne’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Florida certifies.

No lab Florida certifies is within 75 miles of the area McArthur/Line 1/ne serves on the state’s list. Some take samples by mail; the state’s page lists them all.

Florida Department of Health Bureau of Public Health Laboratories: Coliform and E. coli testing for private wells at the Jacksonville and Miami labs. Collection kits come from your county health department, and the sample has to reach the lab on ice the same day it is collected. $40 for private testing through the state lab. Well Water Testing, Florida Department of Health.

All 212 certified labs for Florida