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WaterSafeCheck

ZIP Code 72072 Water Quality Report

Humnoke, AR · Lonoke County County

Safety Score
A

Water Safety Grade

Excellent — Meets all EPA standards

Health Violations

2

Total Violations

13

Lead Risk

High

Contaminants

1

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Active Water Quality Issues Detected

EPA records show 1 unresolved violation. Contact Grand Prairie Regional Water for current status.

About Tap Water in ZIP Code 72072

Tap water in ZIP code 72072 (Humnoke, AR) is among the safest in the country. Served by Grand Prairie Regional Water, this area earned a water safety grade of A with a composite score of 85/100 — indicating full regulatory compliance and low contaminant risk across EPA monitoring periods.

Water System

Grand Prairie Regional Water

EPA ID: AR0000738

Water Source

Ground Water

Population Served

15,204 residents

County

Lonoke County County, Arkansas

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Lead Levels in ZIP 72072

EPA action level: 15 ppb | Public health goal: 0 ppb

Lead Data Not Available

Lead testing data was not found in EPA records for ZIP code 72072. This may occur with very small systems or systems that report under a parent utility. Contact Grand Prairie Regional Water directly to request lead testing results or a copy of their Consumer Confidence Report.

Lead exposure risk in 72072 is rated High. EPA models estimate a 56% probability of lead exposure risk in this ZIP code based on housing age, infrastructure age, and water system data. This typically reflects older housing stock built before 1986 (when lead pipes were banned), aging distribution infrastructure, or detected lead levels in water samples. Families should prioritize getting their tap water tested independently and installing a certified lead-reducing filter.

Lead Exposure Risk Rating
High
Lead Exposure Probability

EPA model estimate based on housing age and infrastructure

56%
Note: Lead levels above are the 90th percentile from EPA monitoring — meaning 90% of samples were at or below this level. Even "undetected" tap water lead doesn't account for lead leaching from home plumbing. If your home was built before 1986, individual tap testing is recommended.
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Violation History

Past 5 years — EPA SDWIS data

Grand Prairie Regional Water has recorded 2 health-based violations in the past 5 years. Multiple health violations suggest recurring compliance challenges. Residents should request a copy of the annual Consumer Confidence Report to understand what contaminants were involved and what corrective actions were taken. 1 violation is currently unresolved — meaning the issue has not yet been formally corrected in EPA records. This is a serious concern that residents should follow up on with their water utility.

Total Violations (5 yr)
13
Health-Based Violations
2
Unresolved Violations
1
Boil Water Advisories
0
Compliance Risk
Critical

Regulatory compliance risk is rated Critical — the highest risk category. Grand Prairie Regional Water has an extensive history of unresolved violations and enforcement actions. Independent water testing is highly recommended.

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Contaminants Detected

Contaminants with health-based violations on record

EPA records identify 1 contaminant associated with health-based violations in ZIP code 72072: Chlorine residual. These contaminants exceeded the Maximum Contaminant Levels (MCLs) established by the EPA under the Safe Drinking Water Act at some point in the 5-year monitoring period. The presence of these violations does not necessarily mean water is currently unsafe — water systems are often required to increase monitoring and treatment when violations occur. Review the annual Consumer Confidence Report for the most current status.

Chlorine residual

⚖ Enforcement Actions

10 enforcement actions have been issued against Grand Prairie Regional Water — a high number that reflects sustained compliance struggles. Enforcement actions escalate from administrative orders to financial penalties when utilities repeatedly fail to meet safe drinking water standards.
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Water Source & Environmental Factors

Ground Water

This system draws water from underground aquifers. Groundwater is naturally filtered through soil and rock, but can still contain naturally occurring minerals like arsenic, radium, or nitrates.

Water Source Type
Ground Water
EPA Radon Zone

Lower potential

Zone 3
Annual Flood Risk Cost

Estimated annual flood-related costs per property

$6
Energy Burden

% of household income spent on energy — indicator of older infrastructure

3.49%

EPA Radon Zone 3 — lower radon potential, though the EPA still recommends testing all homes.

🛡 What Should You Do? — ZIP 72072 Recommendations

  • ✓ Run cold water for 30 seconds each morning before use — especially if pipes are old
  • ✓ Request your annual Consumer Confidence Report from Grand Prairie Regional Water
  • ✓ If your home was built before 1986, consider testing your own tap for lead
  • ✓ Use a pitcher filter (NSF/ANSI 42 certified) for improved taste

Frequently Asked Questions — ZIP 72072 Water Quality

Is tap water safe to drink in ZIP code 72072?+
Yes — tap water in 72072 (Humnoke, AR) currently meets all federal EPA standards with a water safety grade of A. No health-based violations are on record in the past 5 years. You can drink your tap water with confidence, though running the tap for 30 seconds in the morning is always a good practice.
What is the lead level in 72072 tap water?+
Lead level data from EPA monitoring is not available for 72072. Contact Grand Prairie Regional Water directly for the most recent lead testing results.
Who provides tap water to 72072?+
Tap water in ZIP code 72072 is provided by Grand Prairie Regional Water (EPA ID: AR0000738). This system serves approximately 15,204 residents. You can contact them directly for Consumer Confidence Reports, current advisories, and billing information.
What is the water source for 72072?+
ZIP code 72072 is served by ground water. Groundwater systems draw from underground aquifers. While naturally filtered, groundwater can still contain naturally occurring contaminants such as arsenic, radium, or nitrates at elevated levels in some regions.
Does 72072 have any active water quality violations?+
Yes — there are currently 1 unresolved violation on record for this water system. Unresolved violations indicate issues that have not yet been formally corrected in EPA tracking systems. Contact Grand Prairie Regional Water for the latest update.
How do I get a copy of my water quality report for 72072?+
Your water utility — Grand Prairie Regional Water — is required by law to send you an annual Consumer Confidence Report (CCR) by July 1 each year. You can also request it directly from the utility or find it online by searching "Grand Prairie Regional Water Consumer Confidence Report." The EPA's ECHO database also has historical compliance data.
What water filter should I use in 72072?+
The right filter depends on what contaminants are present. For lead, look for a filter certified to NSF/ANSI Standard 53. For chlorine byproducts (like THMs), NSF/ANSI 42 filters work well. For a broad range of contaminants including PFAS, look for NSF/ANSI 58 (reverse osmosis) systems. For ZIP code 72072, with detected contaminants including Chlorine residual, a multi-stage filter or reverse osmosis system is recommended.
Is 72072 tap water safe for babies and infants?+
Infants are especially vulnerable to lead, nitrates, and microbial contaminants in drinking water. Current EPA data for 72072 shows no available lead data — we recommend using a certified NSF/ANSI 53 lead filter as a precaution for infant formula. Always consult your pediatrician for guidance specific to your child's health.

Data Sources & Methodology

Water quality data for ZIP code 72072 is compiled from the EPA Safe Drinking Water Information System (SDWIS), EPA ECHO enforcement database, UCMR5 unregulated contaminant monitoring, and Consumer Confidence Reports filed by Grand Prairie Regional Water. Safety scores are composite metrics derived from violation history, lead levels, enforcement actions, and infrastructure risk indicators. Data reflects a 5-year monitoring window. Last dataset update: 2024. View EPA source data →