Clarinda Treatment Complex

What EPA’s and Iowa’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: 1,439 people
Connections: 16
Water source: Groundwater
Based in: Clarinda, IA
County: Page
Owner: State government

The short answer

Nothing in EPA’s and Iowa’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

Copper: EPA’s file records a utility’s copper only when it exceeds the action level. The last here was 4.4 ppm, for the period ending Dec. 31, 2016. None since is on file, so it is not counted as a current finding.

Nitrate, haloacetic acids (HAA5), total trihalomethanes (TTHM), chromium (total), fluoride and arsenic: Iowa’s own results, samples taken from Jan. 7, 2020 to Aug. 12, 2026, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits5

Nitrate

Comes from the source

Below EPA’s limits

10.2ppm

Highest sample; found in 79 of 79

2026 average: 6.5 ppm

The highest sample, in 2026, was 10.2 ppm, which EPA rounds to 10 ppm to compare: at its legal limit of 10 ppm, not above it. That was also the latest year on file, and its eight samples averaged 6.5 ppm. EPA recorded no violation for nitrate at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 18.4 ppm, in 2015, and EPA recorded violations in 2012, 2013 and 2015.

What handles it

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

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

24.4ppb

Highest yearly average, 2020 to 2026

2026: not found

Averaged by year, the highest was 24.4 ppb, in 2020, below EPA’s legal limit of 60 ppb. In 2026, the latest year on file, it wasn’t found in its one sample.

What handles it

No certification claim covers this compound yet.

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

2.9ppb

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 2.9 ppb, in 2026, 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 3.6 ppb, in 2019.

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

3.4ppb

Highest yearly average, 2022 to 2023

2023: not found

Averaged by year, the highest was 3.4 ppb, in 2022, below EPA’s legal limit of 100 ppb. In 2023, the latest year on file, it wasn’t found in its one sample.

What handles it

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

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.1ppm

Highest yearly average, 2022 to 2023

2023, one sample: 0.1 ppm

Averaged by year, the highest was 0.1 ppm, in 2022, below EPA’s legal limit of 4.0 ppm. In 2023, the latest year on file, its one sample was 0.1 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.1 ppm, in 2013.

What handles it

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

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

Arsenic
Lead

Violations since 2016

No health-based violations on file with EPA since 2016. There are 3 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

Everything else. Nitrate, haloacetic acids (HAA5), total trihalomethanes (TTHM), chromium (total), fluoride and arsenic results here are Iowa’s own from 2020 on, with EPA’s national file for 2012 to 2019. Clarinda Treatment Complex’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; Iowa’s results run from Jan. 7, 2020 to Aug. 12, 2026.

Testing your own tap

Clarinda Treatment Complex’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 Iowa certifies.

No lab Iowa certifies is within 75 miles of the area Clarinda Treatment Complex serves on the state’s list. Some take samples by mail; the state’s page lists them all.

State Hygienic Laboratory at the University of Iowa: Through the Grants-to-Counties program, private well owners in participating counties can have their water tested for total coliform bacteria and nitrate. Start with the county sanitarian at your county health department. No cost in a participating county. The Grants-to-Counties Program, State Hygienic Lab at the University of Iowa.

All 36 certified labs for Iowa