Lincoln County Rural Water System
EPA ID: SD4600304 · 5,965 people served · 8 ZIP codes
ZipCheckup's reading of EPA SDWIS for Lincoln County Rural Water System (SD4600304): 1 EPA violation in the last five years. On record: Lincoln County Rural Water System, 1 violation, all resolved, 5,965 in service area.
Data: EPA SDWIS
Service Area Map
Coverage area for Lincoln County Rural Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Lincoln County Rural Water System serves a community with a median household income of $89,921 and an estimated 133,559 residents across its service area.
💧 Where Does Your Water Come From?
Lincoln County Rural Water System'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.
Infrastructure Risk
Detected Contaminants
How Lincoln County Rural Water System compares to EPA limits
What This Means For You
Revised Total Coliform Rule at 1 presence exceeds the EPA maximum of presence.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 8 detections recorded.
Comparable Water Systems
Similar-sized systems in South 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
Lincoln County Rural Water System (EPA ID: SD4600304) is a community water system in South Dakota that serves approximately 5,965 people from groundwater sources.
This system provides water to 8 ZIP codes across 6 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 0 archived, 0 addressed, and 0 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 |
|---|---|---|---|
| April 1, 2024 | Revised Total Coliform 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 |
|---|---|---|---|
| Revised Total Coliform Rule | Microbiological | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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 SD or modeled from parcel and building-footprint data.
- 57013 - Canton
- 57032 - Harrisburg
- 57039 - Lennox
- 57064 - Tea
- 57077 - Worthing
- 57106 - Sioux Falls
- 57108 - Sioux Falls
- 57110 - Sioux Falls
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Lincoln County Rural Water System (SD4600304) on EPA.gov.
Frequently Asked Questions
Is Lincoln County Rural Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Lincoln County Rural Water System; its 1 accepted 2021-2026 record are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Lincoln County Rural Water System serve?
Lincoln County Rural Water System serves approximately 5,965 people across 8 ZIP codes in South Dakota.
Where does Lincoln County Rural Water System get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Lincoln County Rural Water System (SD): 1 EPA Violation. https://zipcheckup.com/water-system/sd4600304/
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author = {{ZipCheckup}},
title = {{Lincoln County Rural Water System (SD): 1 EPA Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/sd4600304/}
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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
Lincoln County Rural Water System (EPA ID: SD4600304) - request the latest Consumer Confidence Report or ask about specific contaminants.