Trail City, SD Water Safety: 53/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Across Trail City, EPA compliance records fall well below SD averages — documented health-based violations affect multiple service areas, and the city's sustained low grade reflects a persistent pattern across reporting cycles.
How Trail City Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Trail City Water
- Homes built before 1986: 71% — older plumbing may contain lead solder.
- Estimated remediation: $400 per household.
- CDC health risk index: 16.91 — above typical levels.
Who Supplies Your Water in Trail City
Trail City, SD draws its water from one primary utility across 1 tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in Trail City, South Dakota (population ~203), covering 1 community water system serving approximately 3,261 people region-wide.
No EPA violations recorded across any ZIP codes in Trail City — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Trail City: 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
Trail City water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Trail City
- 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 |
|---|---|---|---|
| 57657 | D | MOBRIDGE | 3,261 |
All ZIP Codes in Trail City
- 57657 [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.
Health Outcomes in Trail City
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
Housing & Infrastructure in Trail City
With 71% 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
Reading the housing age data for Trail City — median build year 1975 — the overriding implication is that the plumbing materials inside a typical home here reflect pre-1986 construction standards. In practical terms, that means lead-soldered copper joints are common across much of the housing stock. Where those materials are present, water can leach lead as it moves through joints — a pathway that corrosion control treatment under federal rules is designed to reduce, though it cannot eliminate lead risk where the plumbing materials themselves contain lead.
Over half of homes in Trail City 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.
Cost Context: What Remediation Means for Trail City Homeowners
Within the Trail City market, estimated remediation claims a small portion of typical property equity — the financial burden is proportionally low.
Remediation costs in Trail City are relatively low compared to home values. The $0–$800 estimated range is a small fraction of median property value. Home values are 57% below the South Dakota average.
Lead Exposure Risk for Children in Trail City
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.
Pulling a tap sample fills the gap that utility data cannot close, particularly here where 71% of housing dates from the pre-rule era and citywide monitoring sits at or above the regulatory mark in Trail City.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Trail City
- 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 71% 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 Trail City, SD