Web Water Development Association
EPA ID: SD4601089 · 20,750 people served · 51 ZIP codes
ZipCheckup's reading of EPA records for Web Water Development Association (SD4601089): no drinking-water violations recorded since 2021. Zero EPA violations appear on record for Web Water Development Association, which serves 20,750 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Web Water Development Association Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: C
Demographics of ZIP Codes Served
The ZIP codes associated with Web Water Development Association have a median household income of $68,750 and about 68,299 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 74% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Web Water Development Association's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 1 detection 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
Web Water Development Association (EPA ID: SD4601089) is a community water system in South Dakota that serves approximately 20,750 people from surface water sources.
This system provides water to 51 ZIP codes across 51 communities.
ZIP-Area Home Safety Context: C (67/100)
This is the average Home Safety Score for 11 of 51 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
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 | 2025-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
49 of 50 ZIP records with known zones are in EPA Radon Zone 1. 1 of 50 ZIP records with known zones is in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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.
This system serves 51 ZIP codes:
57219 · 57239 · 57256 · 57261 · 57273 57274 · 57348 · 57401 · 57422 · 57424 57427 · 57428 · 57432 · 57433 · 57434 57435 · 57436 · 57437 · 57438 · 57440 57441 · 57442 · 57445 · 57446 · 57448 57449 · 57450 · 57451 · 57452 · 57454 57456 · 57460 · 57461 · 57465 · 57466 57468 · 57469 · 57471 · 57472 · 57473 57474 · 57475 · 57476 · 57477 · 57479 57481 · 57601 · 57631 · 57632 · 57646 57648
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Web Water Development Association (SD4601089) on EPA.gov.
Frequently Asked Questions
Is Web Water Development Association water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Web Water Development Association in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Web Water Development Association serve?
Web Water Development Association serves approximately 20,750 people across 51 ZIP codes in South Dakota.
Where does Web Water Development Association get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
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.). Web Water Development Association, SD: Serves 21K People. https://zipcheckup.com/water-system/sd4601089/
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author = {{ZipCheckup}},
title = {{Web Water Development Association, SD: Serves 21K People}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/sd4601089/}
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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
Web Water Development Association (EPA ID: SD4601089) - request the latest Consumer Confidence Report or ask about specific contaminants.