Grannis Waterworks
EPA ID: AR0000437 · 548 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for Grannis Waterworks (AR0000437): no EPA violations recorded in the last five years. From the earliest to the most recent cycle in the five-year EPA window, Grannis Waterworks has logged zero violations - no MCL exceedances, no health advisories, and no enforcement activity across the entire period for the 548 people in its service area, a record that stands up well against both state and national benchmarks.
Data: EPA SDWIS
Service Area Map
Coverage area for Grannis Waterworks Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Grannis Waterworks serves a community with a median household income of $54,040 and an estimated 2,183 residents across its service area. Approximately 65% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 100% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Grannis Waterworks'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.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Arkansas
System Overview
Grannis Waterworks (EPA ID: AR0000437) is a community water system in Arkansas that serves approximately 548 people from surface water sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Lead & Copper
No reported lead measurement appears for this PWSID in the accepted LCR snapshot. Absence of a reported measurement is not a measured zero.
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 AR or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Grannis Waterworks (AR0000437) on EPA.gov.
Frequently Asked Questions
Is Grannis Waterworks water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Grannis Waterworks 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 Grannis Waterworks serve?
Grannis Waterworks serves approximately 548 people across 2 ZIP codes in Arkansas.
Where does Grannis Waterworks get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Grannis Waterworks Water Quality Report, AR. https://zipcheckup.com/water-system/ar0000437/
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title = {{Grannis Waterworks Water Quality Report, AR}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ar0000437/}
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