County · Arkansas
Benton County, Arkansas: drinking water records
Explore EPA records for 28 community water systems across 18 ZIP codes in Benton County, then find water-testing resources and available recent monitoring-station readings.
Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages
Drinking-water records
EPA survey and compliance records are historical reports. UCMR 5 results are available for 14 of the 28 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems in this county
All 28 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Bella Vista Poa AR0000039 | 39,419 | 120 | 0 | 2 | 1 ppbbelow the action level |
| Siloam Springs Waterworks AR0000056 | 21,430 | 120 | 3 | 1 | 1 ppbbelow the action level |
| Washington Water Authority Wwa AR0000574 | 20,140 | 120 | 0 | 4 | 1 ppbbelow the action level |
| Cave Springs Waterworks AR0000043 | 5,365 | 120 | 0 | 13 | 1 ppbbelow the action level |
| Springdale Water Utilities AR0000575 | 98,948 | 120 | 0 | 0 | 1 ppbbelow the action level |
| Rogers Water Utilities AR0000055 | 81,443 | 120 | 0 | 0 | 1 ppbbelow the action level |
| Bentonville Water Utilities AR0000041 | 51,250 | 120 | 1 | 0 | 1 ppbbelow the action level |
| Centerton Waterworks AR0000044 | 27,243 | 120 | 0 | 0 | 1 ppbbelow the action level |
| Pea Ridge Waterworks AR0000053 | 12,795 | 120 | 0 | 0 | 1 ppbbelow the action level |
| Madison Co Water Facilities Bd AR0000349 | 11,435 | 120 | 0 | 0 | 2 ppbbelow the action level |
| Gentry Waterworks AR0000048 | 7,910 | 120 | 0 | 0 | 1 ppbbelow the action level |
| Benton County Water District #1 AR0000037 | 6,730 | 120 | 0 | 0 | 1 ppbbelow the action level |
| Gravette Waterworks AR0000051 | 4,900 | 120 | 0 | 0 | 1 ppbbelow the action level |
| Decatur Waterworks AR0000052 | 2,468 | 180 | 0 | 0 | 3 ppbbelow the action level |
| Benton County Water Authority5 AR0000913 | 1,813 | 0 | 0 | 1 | 2 ppbbelow the action level |
| Lost Bridge Vill Wat-Sew Dists AR0000049 | 1,010 | 0 | 0 | 1 | 3 ppbbelow the action level |
| Garfield Waterworks AR0000047 | 758 | 0 | 0 | 1 | 2 ppbbelow the action level |
| Sulphur Springs Waterworks AR0000057 | 580 | 0 | 0 | 1 | 7 ppbbelow the action level |
| Leisure Hills Mobile Home Park AR0000747 | 113 | 0 | 0 | 35 | 3 ppbbelow the action level |
| Old Bella Vista Poa AR0000753 | 83 | 0 | 0 | 4 | 3 ppbbelow the action level |
| Highfill Water Department AR0000885 | 3,970 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Gateway Public Water Authority AR0000693 | 2,325 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Benton County Water Authority4 AR0000899 | 673 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Oakhills Surb Improvment Dist AR0000676 | 133 | 0 | 0 | 0 | 11 ppbbelow the action level |
| Madison Co Regional Water AR0000803 | 4 | 0 | 0 | 1 | not reported |
| Pine Top Water Facilities Board AR0001240 | 55 | 0 | 0 | 0 | not reported |
| Beaver Water District AR0000038 | 54 | 0 | 0 | 0 | not reported |
| Benton-Washington Regional Pwa AR0000871 | 30 | 0 | 0 | 0 | not reported |
USGS · Monitoring stations
The water, more recently.
Available station readings in Benton County, Arkansas. Each measurement keeps its time, unit and original source.
These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.
Recent observations load when this section comes into view.
How these readings update
We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.
Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.
Your next step
Water testing, reports & local help.
Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.
Official national directories
Water testing
Find your state’s private-well program
EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.
Water testing
Find a certified drinking-water laboratory
Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.
Public records
Find your utility’s Consumer Confidence Report
EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.
Public records
Explore USGS water observations
Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.
A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.
Understand water testing and laboratory reportsResource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction
Explore your area
Local coverage in Benton County
18ZIP areas in this overview
Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.
Towns and communities
- Bella Vista
- Bentonville
- Cave Springs
- Centerton
- Decatur
- Gateway
- Gravette
- Highfill
- Lowell
- Maysville
- Pea Ridge
- Rogers
- Siloam Springs
- Sulphur Springs
View ZIP areas and understand coverage
- 72712Bentonville
- 72713Bentonville
- 72714Bella Vista
- 72715Bella Vista
- 72718Cave Springs
- 72719Centerton
- 72722Decatur
- 72732Gateway
- 72734Highfill
- 72736Gravette
- 72739Gravette
- 72745Lowell
- 72747Maysville
- 72751Pea Ridge
- 72756Rogers
- 72758Rogers
- 72761Siloam Springs
- 72768Sulphur Springs
These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.
Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.
Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.