Mason, IL Water Safety: 53/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-06-03
Across Mason, EPA compliance records fall well below IL averages — documented health-based violations affect multiple service areas, and the city's sustained low grade reflects a persistent pattern across reporting cycles.
How Mason Compares
Data: EPA SDWIS Last verified: 2026-06-03
Mason Water: The Quick Version
- Homes built before 1986: 53% — older plumbing may contain lead solder.
- Estimated remediation: $900 per household.
- CDC health risk index: 13.06 — above typical levels.
Water Systems Serving Mason
Multiple utilities divide Mason, IL's water service — 3 leading providers among 4 on the federal register.
Overview
We track water quality and home safety data for 1 ZIP code in Mason, Illinois (population ~1,771), covering 4 community water systems serving approximately 33,214 people region-wide.
No EPA violations recorded across any ZIP codes in Mason — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Mason: D (53/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Mason water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Mason
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 62443 | D | EJ WATER-WATSON | 754 |
All ZIP Codes in Mason
- 62443 [D]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
CDC Health Data for Mason
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
How Old Is Mason's Housing Stock?
With 53% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
The character of Mason's housing stock is one of deep historical layering — a median build year of 1986 signals a city built largely before the plumbing era changes of 1986 and 1970. Lead-soldered copper joints and, in the oldest properties, lead service lines are commonly present in this inventory. That context shapes what individual water testing may reveal, particularly in neighborhoods where the oldest housing is concentrated.
Over half of homes in Mason were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Mason: Remediation Cost in Perspective
At current valuations, Mason sits in the low remediation-share tier — the equity impact of fixing documented issues is proportionally minor.
Remediation costs in Mason are relatively low compared to home values. The $300–$1,600 estimated range is a small fraction of median property value. Home values are 10% below the Illinois average.
Protecting Children from Lead in Mason
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
53% — that captures the slice of Mason housing dating from before the federal ban on solder containing lead. It pairs with aggregate utility readings that either approach or cross 0.015 mg/L, the benchmark set under the EPA Lead and Copper Rule. Together, the two figures shift one-home reads into a standard household-level confirmation, particularly for families with kids. A certified lead-removal filter is available through retailer-verified channels if a kit returns results that warrant additional measures.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Mason
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 53% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Mason, IL