Is Grannis, AR Tap Water Safe to Drink?
Graded A with no contaminants above EPA limits. Here's everything we tested and how Grannis ranks. What to do next ↓
92.7/100
waterverge.com Grannis, AR — Water Quality Report
Grannis's drinking water received a grade of A (92.7 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 548 residents using purchased surface water.
Lead data is not currently available for this system. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 2 violations on record, including 0 health-based violations. All violations have been resolved.
What to know about Grannis's water
Grannis ranks #54 out of 345 cities in Arkansas for water quality, placing it above average in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Grannis may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Grannis, AR water safe to drink?
Based on EPA testing data, Grannis's tap water is generally safe to drink. The water system earned a grade of A (92.7/100), meeting federal drinking water standards across key contaminant categories. The city's 1 water system serves approximately 548 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Grannis
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Grannis's water quality assessment. Grade: A (92.7/100).
Federal disaster declaration (FEMA DR-3541). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3215). Hurricane event — may have impacted local water infrastructure.
Contaminants: Coliform (TCR).
Contaminants: Surface Water Treatment Rule.
Violation history
Grannis's water system has 2 total violations on record, including 0 health-based violations. All violations have been resolved.
Flood & environmental risk
Polk County has experienced 5 federally declared disasters since 1972. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Cossatot River Near Vandervoort.
Where does Grannis's water come from?
Grannis's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 548 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Cossatot River Near Vandervoort (river).
What Grannis residents can do
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Grannis's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Grannis
Industrial polluters nearby
Reported releases to surface water by facilities near Grannis, ranked by pounds discharged annually.
Total reported releases to surface water: 212,284 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
TYSON POULTRY INC. - GRANNIS PROCESSING PLANT GRANNIS, AR71944 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 212,284 | 2.6 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D3 — extreme droughtPolk County is currently in D3 (extreme drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Polk County has experienced 5 federally declared disasters since 1972. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
No contaminant data available for this city.
See how Grannis compares by contaminant
Explore where Grannis ranks among all Arkansas cities for specific contaminants.
Water source & infrastructure
Where Grannis's water comes from
Grannis's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by local government ownership and serves approximately 548 people through 1 water system.
Water bodies near Grannis
Grannis is located near 1 notable water body. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Grannis
| System Name | PWSID | Population | Source |
|---|---|---|---|
| GRANNIS WATERWORKS | AR0000437 | 548 | SWP |
How Grannis compares
Full Arkansas rankings →Grannis's score of 92.7/100 is above the average of 75/100 among major Arkansas cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Arkansas rankings →About Grannis, AR
Learn more about your water
Guides and resources related to Grannis's water quality findings.
Explore water quality across Polk
Frequently asked questions
Is Grannis, AR tap water safe to drink?
Grannis's water quality earned a grade of A (92.7/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #54 out of 345 cities tested in Arkansas.
What contaminants are in Grannis's water?
2 violations are on record.
How is Grannis's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Grannis?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Grannis's water come from?
Grannis's water is sourced from Purchased surface water. The city has 1 water system serving approximately 548 residents.
How does Grannis's water compare to other cities?
Grannis ranks #54 out of 345 cities in Arkansas (better than 84% of state cities) and #1161 out of 15744 cities nationally (93th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Grannis's small water system affect quality?
Grannis's system serves approximately 548 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 2 violations on record.