New Auburn 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
- 549 people
- Connections
- 213
- Water source
- Groundwater
- Based in
- New Auburn, WI
- County
- Chippewa
- Owner
- Local government
- Hardness
- Varies by source
The ZIP code it serves
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, total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, chromium (total) and arsenic: Wisconsin’s own results, samples taken from March 3, 2020 to Aug. 17, 2026, with EPA’s 2012 to 2019 file for earlier years.
Below EPA’s limits5
Nitrate
Comes from the source
5.6ppm
Highest sample; found in 12 of 12
2023, one sample: 2.3 ppm
The highest sample, in 2020, was 5.6 ppm, below EPA’s legal limit of 10 ppm. In 2023, the latest year on file, its one sample was 2.3 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 5.4 ppm, in 2015.
What handles it
- NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
- NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
Total trihalomethanes (TTHM)
Forms or is added in treatment
11.4ppb
Highest yearly average, 2021 to 2026
2026 average: 8.2 ppb
Averaged by year, the highest was 11.4 ppb, in 2023, below EPA’s legal limit of 80 ppb. Its highest single sample was 12.8 ppb. In 2026, the latest year on file, its two samples averaged 8.2 ppb.
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
1.8ppb
Highest yearly average, 2021 to 2026
2026 average: 1.3 ppb
Averaged by year, the highest was 1.8 ppb, in 2025, below EPA’s legal limit of 60 ppb. Its highest single sample was 2.9 ppb. In 2026, the latest year on file, its two samples averaged 1.3 ppb.
What handles it
No certification claim covers this compound yet.
Fluoride
Forms or is added in treatment
0.086ppm
Highest yearly average, 2020 to 2026
2026: not found
Averaged by year, the highest was 0.086 ppm, in 2023, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.11 ppm. In 2026, the latest year on file, it wasn’t found in any of its two samples. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.06 ppm, in 2017.
What handles it
- NSF/ANSI 58 look for “Fluoride Reduction”
- NSF/ANSI 53 look for “Fluoride”
Chromium (total)
Comes from the source
0.6ppb
Highest yearly average, 2020 to 2026
2026: not found
Averaged by year, the highest was 0.6 ppb, in 2020, below EPA’s legal limit of 100 ppb. Its highest single sample was 1.2 ppb. In 2026, the latest year on file, it wasn’t found in any of its two samples. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 0.8 ppb, in 2014.
What handles it
- NSF/ANSI 58 look for “Chromium (Hexavalent) Reduction”
- NSF/ANSI 53 look for “Chromium Reduction”
2 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Arsenic
- Lead
Hardness
Soft to moderately hard depending on the source, 30 to 86 mg/L (1.8 to 5 grains per gallon), across 2 sampling points, 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.
Violations since 2016
| Contaminant or rule | Type | Period | Measured | Status |
|---|---|---|---|---|
| Coliform (TCR) | Too many samples in a month tested positive for coliform bacteria.EPA: Maximum Contaminant Level Violation, Monthly (TCR) | Jan. 1, 2016 to Jan. 31, 2016 | — | Resolved |
| Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 2 monitoring or reporting violations not shown. | ||||
What this report can’t tell you
Everything else. Nitrate, total trihalomethanes (TTHM), haloacetic acids (HAA5), fluoride, chromium (total) and arsenic results here are Wisconsin’s own from 2020 on, with EPA’s national file for 2012 to 2019. New Auburn 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 March 3, 2020 to Aug. 17, 2026.
Testing your own tap
The 3 labs Wisconsin certifies closest to the area New Auburn Waterworks serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Commercial Testing Laboratory Inc.
Colfax, WI · about 18 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Chippewa County Department of Public Health
Chippewa Falls, WI · about 21 miles
Certified for bacteria, nitrate
Eau Claire City-County Health Department
Eau Claire, WI · about 28 miles
Certified for bacteria, nitrate, lead and copper, metals
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 WisconsinSources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- Wisconsin Department of Natural Resources, Drinking Water Program, results from Jan. 2, 2020 to Oct. 5, 2026, read Oct. 8, 2026
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Certified labs: Wisconsin DNR and DATCP, certified and approved drinking water laboratories, read Oct. 10, 2026; distances from the Census 2020 ZIP code tabulation area gazetteer
- Hardness: Wisconsin Department of Natural Resources, Drinking Water Program, results from March 14, 2017 to Aug. 17, 2026, read Oct. 10, 2026
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID WI6090461. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Nothing here is above a health goalIn EPA’s and Wisconsin’s records for this utility. They don’t cover everything, which is why the next step matters.Every contaminant TapBuff tracks
- Get the utility’s own reportNew Auburn Waterworks must send you a water quality report every year. It covers contaminants this page does not show.How to read it
- Test your own tap for leadYour service line, solder and fixtures decide the lead at your faucet, not the utility’s average.Lead in your water: what to do
- Decide if you want a filter at allA filter for taste or chlorine is a preference, not a need. The standards say what each kind can do.NSF/ANSI standards, decoded