Table Mound Park

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: 455 people
Connections: 433
Water source: Groundwater bought from another system
Based in: Dubuque, IA
County: Dubuque
Owner: Private

The ZIP code it serves

52003

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. 1 health-based violation since 2016.

What was found

Total trihalomethanes (TTHM), haloacetic acids (HAA5) and nitrate: Iowa’s own results, samples taken from Jan. 21, 2020 to Aug. 5, 2025, with EPA’s 2012 to 2019 file for earlier years.

Fluoride, arsenic and chromium (total): EPA’s compliance monitoring file, samples taken from Feb. 6, 2013 to April 7, 2014. Newer results are in the utility’s annual water quality report.

Below EPA’s limits4

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

56ppb

Highest yearly average, 2020 to 2025

Averaged by year, the highest was 56 ppb, in 2025, 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 35.9 ppb, in 2017.

What handles it

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

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

24.2ppb

Highest yearly average, 2020 to 2025

2025, one sample: 7.0 ppb

Averaged by year, the highest was 24.2 ppb, in 2020, below EPA’s legal limit of 60 ppb. In 2025, the latest year on file, its one sample was 7.0 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 32.5 ppb, in 2016.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.3ppm

Highest yearly average, 2013 to 2014

2014 average: 0.2 ppm

Averaged by year, the highest was 0.3 ppm, in 2013, below EPA’s legal limit of 4.0 ppm. In 2014, the latest year on file, its two samples averaged 0.2 ppm.

What handles it

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

Nitrate

Comes from the source

Below EPA’s limits

0.36ppm

Highest sample; found in 1 of 4

2021 average: 0.18 ppm

The highest sample, in 2021, was 0.36 ppm, below EPA’s legal limit of 10 ppm. That was also the latest year on file, and its two samples averaged 0.18 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 2.6 ppm, in 2019.

What handles it

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

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

Arsenic
Chromium (total)
Lead

Violations since 2016

Contaminant or rule	Type	Period	Measured	Status
Groundwater Rule	Required treatment for surface water or groundwater was not met.EPA: Treatment Technique (SWTR and GWR)	May 1, 2021 to May 31, 2021	—	Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 3 monitoring or reporting violations not shown.

What this report can’t tell you

Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5) and nitrate results here are Iowa’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. Table Mound Park’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; Iowa’s results run from Jan. 21, 2020 to Aug. 5, 2025; EPA’s compliance samples are from Feb. 6, 2013 to April 7, 2014.

Testing your own tap

Table Mound Park’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.

The 3 labs Iowa certifies closest to the area Table Mound Park serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

Dubuque County Health Department
Dubuque, IA · about 8 miles
Certified for bacteria
(563) 557-7396
ChemRight Laboratories
Maquoketa, IA · about 22 miles
Certified for bacteria, nitrate, minerals and other inorganics
(563) 652-4226
QC Analytical Services
Le Claire, IA · about 57 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
(563) 289-3373

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