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Janesville Tap Water Quality Report
Janesville's water has 1 contaminant above EPA MCLGs. Consider using a certified water filter for additional protection.
Water system
JANESVILLE WATER SUPPLY
People Served
1,034
Health-based violations since 2020
0
JANESVILLE WATER SUPPLY. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
May 2022 · JANESVILLE WATER SUPPLY
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Janesville Tap Water Safe to Drink?
We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems. Janesville's water has 1 contaminant above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
JANESVILLE WATER SUPPLY, Janesville's water system, serves 1,034 people. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for JANESVILLE WATER SUPPLY is from May 2022.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Iowa
Janesville Water Service Areas
What these numbers actually mean for Janesville, IA
We read Janesville, IA’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 1 contaminant above EPA MCLGs and 4 contaminants with an EPA health goal detected in some samples (no level on file)
- 14 results on file
- No PFAS results on record
Buying a home here? Property Water Report — $49 Emailed within one business day.
Fluoride in Janesville's water
JANESVILLE WATER SUPPLY
PWSID IA0932001
No fluoride level in our data for JANESVILLE WATER SUPPLY. Your utility's annual water quality report (CCR) lists it.
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What Janesville's water readings can explain
We publish a city-level hardness figure for Janesville, 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 Janesville? Public-water results do not apply to private wells. See Bremer County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Janesville
Janesville's tap water has an estimated 12.1 grains per gallon (207.5 mg/L, county sampling in Bremer County) — very hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for an estimated 12.1 gpg water in Janesville — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full. For the national picture first, read what a water softener costs — equipment, installation labour and ten-year ownership, each separated out. For Iowa as a whole, read water softener cost in Iowa — priced against the plumber wage published for the state.
Frequently Asked Questions About Janesville Tap Water
Janesville's water has 1 contaminant above EPA MCLGs. While the water meets federal legal limits, we recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach JANESVILLE WATER SUPPLY. For a problem with your water now (discolored water, no water, low pressure, a leak), contact JANESVILLE WATER SUPPLY directly.
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