Mission, SD Water Safety: 63/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Across water systems in Mission, safety results are uneven — a portion carry active or recent violations, while others meet federal standards without incident, placing the city in the middle tier for SD.
How Mission Compares
Data: EPA SDWIS Last verified: 2026-06-03
Mission Water: The Quick Version
- Homes built before 1986: 55% — older plumbing may contain lead solder.
- Estimated remediation: $1,600 per household.
- CDC health risk index: 19.21 — above typical levels.
Water Systems Serving Mission
2 independent water providers serve Mission, SD — 2 systems appear in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Mission, South Dakota (population ~3,530), covering 2 community water systems serving approximately 5,393 people region-wide.
No EPA violations recorded across any ZIP codes in Mission — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Mission: C (63/100)
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
Mission water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Mission
- 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 |
|---|---|---|---|
| 57555 | C | TRIPP COUNTY WATER USER DISTRICT | 4,860 |
All ZIP Codes in Mission
- 57555 [C]
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 Mission
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 Mission's Housing Stock?
With 55% 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
Because the majority of Mission's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1986 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Mission 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.
Mission: Remediation Cost in Perspective
Given that Mission falls in the elevated cost-to-value tier, the equity impact of documented remediation is a real financial planning challenge for most homeowners.
At 2.2% of home value, remediation costs in Mission represent a significant financial burden. For homes valued near the median, fixing water and safety issues could cost $800–$2,600. Home values here are 58% below the South Dakota average.
Protecting Children from Lead in Mission
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.
Routinely in Mission, where 55% of housing predates the solder ban and aggregate utility readings hover near the federal threshold, a faucet-level draw functions as a standard household step for families with small kids.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Mission
Flood risk in Mission occupies the middle ground: 4 NFIP claims and 100% of local ZIP codes within FEMA flood zones. At that level, the risk pathways connecting flooding to water quality — treatment system stress, well infiltration, distribution backflow — become relevant considerations during significant flood events, even if day-to-day water quality is unaffected by flood history.
Mission has a moderate flood history with 4 FEMA claims averaging $484 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,600</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Mission
- 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 55% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Mission, SD