Joanna, SC Water Safety: 53/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
A meaningful share of water systems in Joanna have recorded health-based violations in recent SC monitoring periods — placing the city in the lower tier for tap water safety.
How Joanna Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Joanna Residents
- Homes built before 1986: 81% — older plumbing may contain lead solder.
- Estimated remediation: $1,000 per household.
- CDC health risk index: 14.64 — above typical levels.
Joanna's Water Providers
As of current federal records, Joanna, SC is served primarily by one water utility among 1 tracked system. That single provider handles infrastructure investment, rate adjustments, and regulatory reporting under EPA oversight.
Overview
We track water quality and home safety data for 1 ZIP code in Joanna, South Carolina (population ~1,375), covering 1 community water system serving approximately 8,938 people region-wide.
No EPA violations recorded across any ZIP codes in Joanna — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Joanna: 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
Joanna water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Joanna
- 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 |
|---|---|---|---|
| 29351 | D | CLINTON CITY OF (SC3010002) | 8,938 |
All ZIP Codes in Joanna
- 29351 [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.
Joanna Community Health Snapshot
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
Joanna Infrastructure Age
With 81% 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
When a city's housing median build year is 1961, as in Joanna, the implication for water quality research is straightforward: municipal-level data captures what leaves the treatment plant, but household plumbing from before 1986 determines what actually arrives at the tap. In cities where older housing predominates, that gap between system-level and household-level data is widest.
Over half of homes in Joanna 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.
How Remediation Costs Compare in Joanna
Because property values in Joanna comfortably exceed estimated remediation costs, the equity impact here is proportionally small.
Remediation costs in Joanna are relatively low compared to home values. The $400–$1,600 estimated range is a small fraction of median property value. Home values are 48% below the South Carolina average.
Joanna: Lead Risk & Vulnerable Populations
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.
After the federal action removing lead-bearing solder from new plumbing took effect, building practice shifted — but 81% of the Joanna inventory predates that line. With aggregate samples near or beyond 0.015 mg/L, an in-home check moves out of the optional column into the standard list.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Joanna
- 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 81% 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 Joanna, SC