Hillsboro Tap Water Quality Report
Hillsboro's water has 7 contaminants above EPA MCLGs. We recommend using a certified water filter.
Utility
HILLSBORO WATERWORKS
People Served
1,325
MCL Violations
0
Last Updated
Is Hillsboro Tap Water Safe to Drink?
Hillsboro's water has 7 contaminants above EPA health-based guidelines. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Hillsboro's water.
The data below shows test results from 1 water utility serving 1,325 people in the Hillsboro area. Water quality testing is conducted regularly and reported to the EPA. This report was last updated .
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Wisconsin
Get Hillsboro Water Alerts
EPA data, filter picks, and water quality news for Wisconsin โ in your inbox.
Free forever. Unsubscribe anytime. We never share your email.
Verify Your Water Quality with Independent Testing
With 7 contaminants above EPA health guidelines, independent laboratory testing provides a second opinion and can track changes over time.

SimpleLab
Advanced Home Water Test
$369
Most comprehensive home water test including all standard tests plus additional parameters for ultimate peace of mind.

SimpleLab
Standard Home Water Test
$232
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.

Tap Score
Advanced Microplastics Test
$636
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
With 7 contaminants above health guidelines, you may want to explore water purification options. Learn how to make distilled water at home for applications like humidifiers, CPAP machines, and baby formula.
What Hillsboro's water readings can explain
Utility-reported data for Hillsboro includes sulfate โ the readings behind these common tap water questions. We publish a city-level hardness figure for Hillsboro, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Hillsboro? Public-water results do not apply to private wells. See Vernon County well water testing and USGS risk data โ modeled arsenic, nitrate, and the tests to run.
What a water softener costs for Hillsboro's water
Hillsboro's tap water measures 12.3 grains per gallon (210.0 mg/L) โ very hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 12.3 gpg water in Hillsboro โ equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full.
Frequently Asked Questions About Hillsboro Tap Water
Hillsboro's water has 7 contaminants above EPA MCLGs. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Hillsboro's water.
Spotted something off on this page?
Residents keep our data honest.
Stay Informed About Your Water Quality
Get EPA reports, filter recommendations, and safety alerts for your area.
Weekly water-quality guidance for your area. Unsubscribe anytime.