Skip to content
TapBuff
ZIP

Eastman Waterworks

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
342 people
Connections
161
Water source
Groundwater
Based in
Eastman, WI
County
Crawford
Owner
Local government
Hardness
Very hard
The ZIP code it serves

54626

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. 1 health-based violation since 2016.

What was found

Nitrate, haloacetic acids (HAA5), total trihalomethanes (TTHM), fluoride, arsenic and chromium (total): Wisconsin’s own results, samples taken from Sept. 9, 2020 to June 10, 2026, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits4

Nitrate

Comes from the source

Below EPA’s limits

2.5ppm

Highest sample; found in 7 of 7

2026, one sample: 2.1 ppm

The highest sample, in 2025, was 2.5 ppm, below EPA’s legal limit of 10 ppm. In 2026, the latest year on file, its one sample was 2.1 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 1.9 ppm, in 2019.

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

11.2ppb

Highest yearly average, 2021 to 2024

2024, one sample: 9.0 ppb

Averaged by year, the highest was 11.2 ppb, in 2021, below EPA’s legal limit of 60 ppb. In 2024, the latest year on file, its one sample was 9.0 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 4.2 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

7.6ppb

Highest yearly average, 2021 to 2024

Averaged by year, the highest was 7.6 ppb, in 2024, 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 3.7 ppb, in 2015.

What handles it

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

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.1ppm

Highest yearly average, 2020 to 2026

Averaged by year, the highest was 0.1 ppm, in 2026, below EPA’s legal limit of 4.0 ppm. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.11 ppm, in 2014.

What handles it

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

Very hard, 318 mg/L (18.6 grains per gallon), at its one sampling point, 2017 to 2026.

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 18.6 grains per gallon, salt includedSoftener or salt-free conditioner?Wisconsin water hardness, utility by utility

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Stage 1 Disinfectants and Disinfection Byproducts RuleTreatment was not run by a certified operator as required.EPA: Treatment Technique No Certif. OperatorMay 2, 2024—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record.

What this report can’t tell you

  • Everything else. Nitrate, haloacetic acids (HAA5), total trihalomethanes (TTHM), fluoride, arsenic and chromium (total) results here are Wisconsin’s own from 2020 on, with EPA’s national file for 2012 to 2019. Eastman Waterworks’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; Wisconsin’s results run from Sept. 9, 2020 to June 10, 2026.

Testing your own tap

Eastman Waterworks’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 Eastman Waterworks serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Vernon County Health Department

    Viroqua, WI · about 22 miles

    Certified for bacteria, nitrate

    (608) 637-5251

  • LV Labs WW, LLC

    Lancaster, WI · about 31 miles

    Certified for bacteria, nitrate

    (608) 723-4096

  • Leuther Laboratories LLC

    Coon Valley, WI · about 36 miles

    Certified for bacteria

    (608) 788-8180

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

Sources

PWSID WI6120243. Rebuilt from EPA data on Oct. 18, 2026.

Also in Crawford County

All Wisconsin utilities

What to do next