Riverdale Subdivision
EPA ID: ND0901365 · 88 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Riverdale Subdivision (ND0901365): 1 unresolved EPA violation on record. Unlike fully compliant utilities, Riverdale Subdivision has 1 outstanding EPA violation for approximately 88 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Riverdale Subdivision Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Riverdale Subdivision serves a community with a median household income of $142,216 and an estimated 5,136 residents across its service area.
💧 Where Does Your Water Come From?
Riverdale Subdivision's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Wastewater Proximity Note: This service area ranks in the 70th percentile nationally for proximity to wastewater discharge points.
Infrastructure Risk
Detected Contaminants
How Riverdale Subdivision compares to EPA limits
What This Means For You
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Stage 2 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Comparable Water Systems
Similar-sized systems in North Dakota
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Riverdale Subdivision (EPA ID: ND0901365) is a community water system in North Dakota that serves approximately 88 people from groundwater sources.
This system serves ZIP code 58047 in Horace.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 0 archived, 0 addressed, and 1 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| November 24, 2025 | Stage 1 DBP Rule | Non-health-based | Unaddressed (current) |
| July 2, 2025 | Stage 2 DBP Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Stage 2 DBP Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.007 mg/L | No | N/A |
The accepted LCR snapshot contains 1 reported copper action-level exceedance record for this PWSID. The source does not provide a verified copper level for publication.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by ND or modeled from parcel and building-footprint data.
- 58047 - Horace
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Riverdale Subdivision (ND0901365) on EPA.gov.
Frequently Asked Questions
Is Riverdale Subdivision water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current noncompliance record and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Riverdale Subdivision serve?
Riverdale Subdivision serves approximately 88 people across 1 ZIP code in North Dakota.
Where does Riverdale Subdivision get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Riverdale Subdivision (ND): 2 EPA Violations. https://zipcheckup.com/water-system/nd0901365/
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author = {{ZipCheckup}},
title = {{Riverdale Subdivision (ND): 2 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/nd0901365/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Riverdale Subdivision (EPA ID: ND0901365) - request the latest Consumer Confidence Report or ask about specific contaminants.