Woodstock Tap Water Quality Report
Woodstock's water has 6 contaminants above EPA MCLGs. We recommend using a certified water filter.
Utility
WOODSTOCK WATER SYSTEM
People Served
25,630
MCL Violations
0
Last Updated
Is Woodstock Tap Water Safe to Drink?
Woodstock's water has 6 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 Woodstock's water.
The data below shows test results from 1 water utility serving 25,630 people in the Woodstock area. Water quality testing is conducted regularly and reported to the EPA. This report was last updated Jul 17, 2025.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Illinois
Water Report for Woodstock, IL
Every number for your address, explained in plain English — plus what we would do about it.
Emailed to you the same day. Written by a person, not generated.
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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 — 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 — and what would be overkill
- Every figure with its source and the date we read it
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Recommended Water Filters for Woodstock
Based on Woodstock's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
Solventum Purification Inc.
3MRO401
NSF Certified:
Daily Production
11.48 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 11.48 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 15 contaminants:
+10 more
Copper, Cryptosporidium, Fluoride, Lead, Radium 226, Radium 228, Radium, combined (-226 & -228), Selenium, Total Dissolved Solids, Turbidity
Solventum Purification Inc.
3MRO301
NSF Certified:
Daily Production
11.48 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 11.48 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 15 contaminants:
+10 more
Copper, Cryptosporidium, Fluoride, Lead, Radium 226, Radium 228, Radium, combined (-226 & -228), Selenium, Total Dissolved Solids, Turbidity
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
AquaTru
Classic
NSF Certified:
Flow Rate
0.04 gpm
Daily Production
600 gpd
Highlights:
- Best overall contaminant reduction score
- Most performance certifications
- Lifetime warranty
- NSF-42, NSF-53, NSF-58, NSF-401 certified
Removes 23 contaminants:
+18 more
Molybdenum, Barium, Chlorine, Arsenic, 83+ contaminants, Calcium, Chloride, Copper, Magnesium, Nitrate, Phosphorus, Sodium, Sulfate, Total Dissolved Solids, Zinc, Total THMs, Chloroform, Nitrate (as N)
Verify Your Water Quality with Independent Testing
With 6 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 6 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 Woodstock's water readings can explain
Utility-reported data for Woodstock includes manganese and sulfate — the readings behind these common tap water questions. We publish a city-level hardness figure for Woodstock, 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 Woodstock? Public-water results do not apply to private wells. See McHenry County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
What a water softener costs for Woodstock's water
Woodstock's tap water measures 20.1 grains per gallon (343.0 mg/L) — very hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 20.1 gpg water in Woodstock — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full.
Frequently Asked Questions About Woodstock Tap Water
Woodstock's water has 6 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 Woodstock's water.
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