Othello Country Club Water Assn

What EPA’s and Washington’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: 208 people
Connections: 86
Water source: Groundwater
Based in: Othello, WA
County: Adams
Owner: Private

The short answer

Nothing in EPA’s and Washington’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

Total trihalomethanes (TTHM), nitrate and haloacetic acids (HAA5): Washington’s own results, samples taken from June 1, 2020 to June 18, 2024, with EPA’s 2012 to 2019 file for earlier years.

Fluoride, arsenic and chromium (total): EPA’s compliance monitoring file, samples taken from Nov. 12, 2018 to Nov. 12, 2018. Newer results are in the utility’s annual water quality report.

Below EPA’s limits3

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.55ppm

Highest yearly average, 2018

Averaged by year, the highest was 0.55 ppm, in 2018, below EPA’s legal limit of 4.0 ppm. That is the only year on file.

What handles it

NSF/ANSI 58 look for “Fluoride Reduction”
NSF/ANSI 53 look for “Fluoride”

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

1.3ppb

Highest yearly average, 2020 to 2023

Averaged by year, the highest was 1.3 ppb, in 2023, below EPA’s legal limit of 80 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.4 ppb, in 2016.

What handles it

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

Nitrate

Comes from the source

Below EPA’s limits

0.067ppm

Highest sample; found in 1 of 5

2024, one sample: 0.067 ppm

The highest sample, in 2024, was 0.067 ppm, below EPA’s legal limit of 10 ppm. That was also the latest year on file, and its one sample was 0.067 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.71 ppm, in 2014.

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
Chromium (total)
Haloacetic acids (HAA5)
Lead

Violations since 2016

No health-based violations on file with EPA since 2016. There are 4 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

Everything else. Total trihalomethanes (TTHM), nitrate and haloacetic acids (HAA5) results here are Washington’s own from 2020 on, with EPA’s national file for 2012 to 2019. Fluoride, arsenic and chromium (total) come from EPA’s file alone, which ends in 2019. Othello Country Club Water Assn’s own annual report, which it must send you every year, has newer results for those and 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; Washington’s results run from June 1, 2020 to June 18, 2024; EPA’s compliance samples are from Nov. 12, 2018 to Nov. 12, 2018.

Testing your own tap

Othello Country Club Water Assn’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 Washington certifies.

No lab Washington certifies is within 75 miles of the area Othello Country Club Water Assn serves on the state’s list. Some take samples by mail; the state’s page lists them all.

All 84 certified labs for Washington