Marell Country Estates

What EPA’s and Wisconsin’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: 150 people
Connections: 47
Water source: Groundwater
Based in: Elk Mound, WI
County: Dunn
Owner: Private
Hardness: Moderately hard

The ZIP code it serves

54739

The short answer

Nothing in EPA’s and Wisconsin’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 1.8 ppm, for the period ending Dec. 31, 2004. None since is on file, so it is not counted as a current finding.

Nitrate: Wisconsin’s own results, samples taken from Feb. 12, 2020 to April 11, 2023, with EPA’s 2012 to 2019 file for earlier years.

Fluoride, arsenic and chromium (total): EPA’s compliance monitoring file, samples taken from July 10, 2018 to July 10, 2018. Newer results are in the utility’s annual water quality report.

Below EPA’s limits2

Nitrate

Comes from the source

Below EPA’s limits

6.3ppm

Highest sample; found in 8 of 9

2023 average: 5.5 ppm

The highest sample, in 2020, was 6.3 ppm, below EPA’s legal limit of 10 ppm. In 2023, the latest year on file, its two samples averaged 5.5 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 7.2 ppm, in 2013.

What handles it

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

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.15ppm

Highest yearly average, 2018

Averaged by year, the highest was 0.15 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”

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

Arsenic
Chromium (total)
Lead

Hardness

Moderately hard, 95 mg/L (5.6 grains per gallon), at its one sampling point, in 2018.

Hardness is calcium and magnesium. EPA sets no limit for it: it shows up as scale on fixtures and in water heaters, and as soap that won’t lather. USGS calls water above 60 mg/L moderately hard, above 120 hard and above 180 very hard.

Softeners compared at 5.6 grains per gallon, salt included Softener or salt-free conditioner?Wisconsin water hardness, utility by utility

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. Nitrate results here are Wisconsin’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. Marell Country Estates’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; Wisconsin’s results run from Feb. 12, 2020 to April 11, 2023; EPA’s compliance samples are from July 10, 2018 to July 10, 2018.

Testing your own tap

Marell Country Estates’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 Wisconsin certifies.

The 3 labs Wisconsin certifies closest to the area Marell Country Estates serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

Eau Claire City-County Health Department
Eau Claire, WI · about 9 miles
Certified for bacteria, nitrate, lead and copper, metals
(715) 839-4718
Commercial Testing Laboratory Inc.
Colfax, WI · about 11 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
(715) 962-3121
Dunn County Health Department
Menomonie, WI · about 11 miles
Certified for bacteria, nitrate
(715) 232-2388

Wisconsin State Laboratory of Hygiene: Well water test kits ordered by phone and shipped free; you pay to mail the sample back, and the lab bills you after testing. Tests run from bacteria alone to a homeowner package covering bacteria, nitrate, fluoride, metals, hardness, volatile organic compounds and atrazine. Bacteria is $35, nitrate $35, lead $38, and the homeowner package $450, as of July 1, 2026. Public Environmental and Water Testing Prices, Wisconsin State Laboratory of Hygiene.

All 156 certified labs for Wisconsin