Hyde County, South Dakota
5 ZIP codes · Avg score 46/100 · Grade D · Updated 2026-06-03
Water monitoring data from Hyde County's 5 ZIP codes tells a below-average story — health violations are present and system-level detail is worth checking.
How Hyde County Compares
How Hyde County Compares
Hyde County scores 14 points below the South Dakota state average (60/100) and 22 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Hyde County, South Dakota
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.8 (asthma 10.3%, diabetes 12.7%)
Estimated additional annual cost per homeowner: $408, driven primarily by energy_code_gap
Infrastructure: 0.37% avg pipe failure probability, 40% of ZIPs at high risk
66.2% of homes built before 1978 (lead paint era)
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $408
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
969 housing units in Hyde County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Hyde County
Remediation costs are relatively manageable for most homeowners in Hyde County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Hyde County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
All ZIP Codes in Hyde County
5 ZIP codes tracked in Hyde County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57345 | Highmore | 68 | C | 1 | $122K |
| 2 | 57346 | Stephan | 40 | D | 0 | — |
| 3 | 57371 | Ree Heights | 40 | D | 0 | — |
| 4 | 57536 | Harrold | 40 | D | 0 | $138K |
| 5 | 57540 | Holabird | 40 | D | 0 | $269K |
Recommended Buyer Guides for Hyde County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 66.2% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Hyde County, South Dakota
Overview
Hyde County in South Dakota covers 5 ZIP codes with an average Home Safety Score of D (46/100).
1 of 5 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to South Dakota water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.
What You Can Do
Hyde County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
66.2% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.