CITY REPORT IL

Rio, IL: High Radon Potential Area - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
0
ZIPs Linked to Systems with Violations
Zone 1
County Radon Potential (High)
$149K
Median Home Value

What You Should Know About Rio Water

  • Average of reported 90th-percentile lead results: 0.0088 mg/L.
  • Homes built before 1986: 74% - older plumbing may contain lead solder.
  • Health risk index (ZipCheckup composite of CDC data): 14.71.

Who Supplies Your Water in Rio

Public water system records for Rio, IL point to a single listed provider, drawn from 1 system in the federal data; its violation record appears below.

Overview

We track home safety data for 1 ZIP code in Rio, Illinois (population ~430), covering 1 community water system serving approximately 1,885 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.

Water Sources

Rio water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0088 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Areas with No Violations

ZIP Code Safety Score System Population
61472 — Aqua Illinois-oak Run 1,885

All ZIP Codes in Rio

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Health Outcomes in Rio

10.6%
Asthma (US: 9.8%)
13.5%
Diabetes (US: 10.4%)
17.5%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 10.6% ↑
Diabetes 13.5% ↑
Mental Health 17.5% ↑

Vertical line = national average. ■ Above national · ■ Below national

Housing & Infrastructure in Rio

1975
Median Build Year
74%
Built Before 1986
39%
Built Before 1970
Copper
Likely Pipe Material

With 74% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

Plumbing risk in older housing is tied to the period before 1986, when lead pipes and lead solder were still permitted in new plumbing. Rio's median build year is 1975, and properties from before that year might still contain lead-bearing joints or pipes. Much of that risk sits inside individual properties, which city-level water quality averages don't capture.

1975
Median Year Built
74%
Pre-1986 (lead solder era; lead paint banned 1978)
39%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (39%) 1970–1986 (35%) Post-1986 (26%)

Over half of homes in Rio were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

Lead Exposure Risk for Children in Rio

74%
Homes Built Before 1986
0.0088
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Frequently Asked Questions

Does Rio water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Rio is 0.0088 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Rio?
Our records map 1 water system to 1 ZIP code in Rio. The related population figure in our data is approximately 430 people; it is not a count of people served citywide.
Home → Cities → Illinois → Rio, IL

How to cite this page

APA ZipCheckup. (2026). Rio, IL: High Radon Potential Area - Home Safety Score unavailable. https://zipcheckup.com/cities/il/rio/
BibTeX
@misc{zipcheckup-cities-il-rio,
  author = {{ZipCheckup}},
  title  = {{Rio, IL: High Radon Potential Area - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/il/rio/}
}

Page version: October 2026.

Get safety alerts for Rio, Illinois

Free updates when EPA data changes for this area. No spam.

Unsubscribe anytime. Privacy Policy.

Share This Page

X Facebook
Check your water filter options Free tool - no phone call required.