Northfield Tap Water Quality Report
Northfield's water has 3 contaminants above EPA MCLGs. Consider using a certified water filter for additional protection.
Utility
NORTHFIELD
People Served
5,470
MCL Violations
0
Last Updated
Is Northfield Tap Water Safe to Drink?
Northfield's water has 3 contaminants above EPA health-based guidelines (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.
The data below shows test results from 1 water utility serving 5,470 people in the Northfield area. Water quality testing is conducted regularly and reported to the EPA. This report was last updated 2024-11-22.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Illinois
Northfield Water Service Areas
Water Report for Northfield, IL
Every number for your address, explained in plain English โ plus what we would do about it.
Emailed to you the same day. Written by a person, not generated.
If it is wrong or not useful, reply to the email and we refund you in full.
What the report covers
- Your water system, and how confident we are it is the right one for this address
- Every detection in the latest sampling, with what the level means for a household
- Five years of history โ what is getting better, what is not
- Violations and enforcement on record for this system
- UCMR5 PFAS results where the system was sampled, and plainly stated when it was not
- Hardness, and what it costs you in appliances and soap
- What we would test at your own tap, and why
- What treatment actually addresses your results โ and what would be overkill
- Every figure with its source and the date we read it
Buying a home here? Emailed within one business day.
Get Northfield Water Alerts
EPA data, filter picks, and water quality news for IL โ in your inbox.
Free forever. Unsubscribe anytime. We never share your email.
Recommended Water Filters for Northfield
Based on Northfield's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.

Culligan
ZeroWater
NSF Certified:
Flow Rate
1.9 gpm
Daily Production
1 gpd
Highlights:
- Compact design
- Easy to set up
- Affordable
- NSF-42, NSF-53, NSF-401 certified
Removes 19 contaminants:
+14 more
Strontium, Molybdenum, Fluoride, Uranium, Lead, Total PFAS, Chlorine, 25, Phosphorus, Bicarbonate, Calcium, Carbonate, Magnesium, Sodium

Santevia
Bath Filter
NSF Certified:
Flow Rate
0.36 gpm
Highlights:
- Organic cotton design reduces plastic used in construction
- Affordable upfront & ongoing cost
- The only bath filter that removed 100% chlorine with โnormalโ faster faucet flow
Removes 1 contaminants:

Waterdrop
A1
NSF Certified:
Flow Rate
1 gpm
Highlights:
- Performance certified
- Lower price than Philips
- Hot water dispensing
- Compact design
Removes 5 contaminants:

Whirlpool Corporation
W11256135
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.7 gpm
Removes 19 contaminants:
+14 more
Benzene, Carbofuran, Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Chlorobenzene, Cryptosporidium, Ethylbenzene, Lead, Mercury, Metolachlor, Tetrachloroethylene, Toxaphene, Turbidity
Verify Your Water Quality with Independent Testing
With 3 contaminants above EPA health guidelines, independent laboratory testing provides a second opinion and can track changes over time.

SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.

Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.

Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
With 3 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.
Frequently Asked Questions About Northfield Tap Water
Northfield's water has 3 contaminants 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.
Check another location
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.