Is Ridgefield, IL tap water safe?
The short answer
1 of the 2 utilities serving Ridgefield has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Illinois’s records: Woodstock.
Woodstock, which serves the most people here, has 1 result above the action level and 1 result above the health goal. The worst: Copper at 1.5 ppm, above the action level.
The water from Woodstock is moderately hard to very hard depending on the source, 100 to 250 mg/L (5.8 to 14.6 grains per gallon). How Illinois’s water compares.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Ridgefield’s ZIP codes, from EPA’s estimates.
- Open report
Woodstock
Illinois · serves 25,630 people · under 100 in Ridgefield
1 result above the action level and 1 result above the health goal. The worst: Copper at 1.5 ppm, above the action level. Hardness: moderately hard to very hard depending on the source, 100 to 250 mg/L (5.8 to 14.6 grains per gallon).
1 health-based violation since 2016
- Open report
Crystal Lake
Illinois · serves 40,661 people · under 100 in Ridgefield
2 results above the health goal. The worst: Lead at 6.8 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 1.6 to 91 mg/L (0.1 to 5.3 grains per gallon).
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Woodstock’s water, which serves the most people here. Another utility’s report names what handles its own results.
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PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Copper, Lead
Culligan 10-Cup Pitcher with ZeroWater Technology (ZEROP10)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Copper, Lead
LifeStraw Home 7-Cup Glass Water Filter Pitcher
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Copper, Lead
Water testing near Ridgefield
The 3 labs Illinois certifies closest to Ridgefield, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
McHenry County Health Department
Woodstock, IL · about 4 miles
Certified for bacteria
Pace Analytical Services, LLC - McHenry
McHenry, IL · about 5 miles
Certified for bacteria
Lake County Environmental Laboratory
Libertyville, IL · about 22 miles
Certified for bacteria
Illinois Department of Public Health: Coliform bacteria and nitrate testing for private wells, with sample bottles from your local health department, or from the department's nearest regional office where there is none. You mail the sample to the lab, and results come back through the health department. Well Sampling for Coliform & Nitrate, Illinois Department of Public Health.
All 30 certified labs for IllinoisWhich ZIP codes are in Ridgefield: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Illinois Department of Public Health, certified water microbiology laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Ridgefield
Other towns in McHenry County with a page of their own.
What to do next
- Read Woodstock’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About CopperWhat it does to health, where it comes from, and the certification claim that addresses it.About Copper
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water