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WaterSafeCheck

ZIP Code 57528 Water Quality Report

Colome, SD · Tripp County County

Safety Score
D

Water Safety Grade

Poor — Multiple violations recorded

Health Violations

1

Total Violations

2

Lead Risk

High

Contaminants

1

About Tap Water in ZIP Code 57528

Tap water in ZIP code 57528 (Colome, SD) has received a D grade (score: 49/100) — below average for the nation. TRIPP COUNTY WATER USER DISTRICT has recorded notable violations with EPA Safe Drinking Water Act regulations. Residents may want to consider additional filtration and review their annual Consumer Confidence Report.

Water System

TRIPP COUNTY WATER USER DISTRICT

EPA ID: SD4600520

Water Source

Ground Water

Population Served

4,860 residents

County

Tripp County County, South Dakota

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Lead Levels in ZIP 57528

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

Lead Level: 15.0 ppb — Approaching Action Level

The 90th percentile lead level in 57528 is 15.0 ppb, approaching the EPA action level of 15 ppb. When a water system's 90th percentile exceeds this threshold, the utility is required to take corrective action including public notification and infrastructure upgrades. Residents — especially those with children or in homes built before 1986 — should use a certified lead-reducing filter (NSF/ANSI 53 or 58) for drinking and cooking water.

Lead exposure risk in 57528 is rated High. EPA models estimate a 61% 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 Level (90th percentile)
15.00 ppb (0.015 mg/L)
Lead Exposure Risk Rating
High
Lead Exposure Probability

EPA model estimate based on housing age and infrastructure

61%
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

TRIPP COUNTY WATER USER DISTRICT has recorded 1 health-based violation in the past 5 years. A single health violation means the water exceeded an EPA maximum contaminant level (MCL) at some point. Most water systems resolve these quickly, but residents should review the Consumer Confidence Report for details.

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

Regulatory compliance risk is rated High. TRIPP COUNTY WATER USER DISTRICT has a pattern of compliance issues that goes beyond isolated incidents. Residents should stay informed via their utility's Consumer Confidence Report.

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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 57528: 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

5 enforcement actions have been issued against TRIPP COUNTY WATER USER DISTRICT — 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

Moderate potential

Zone 2
Energy Burden

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

3.2%

EPA Radon Zone 2 — moderate radon potential. The EPA recommends testing your home regardless of zone designation.

🛡 What Should You Do? — ZIP 57528 Recommendations

  • 🚨 Install a certified NSF/ANSI 53 or 58 (reverse osmosis) filter immediately for drinking and cooking
  • 🚨 Do not give unfiltered water to children, pregnant women, or immunocompromised individuals
  • 🚨 Contact TRIPP COUNTY WATER USER DISTRICT to request the current violation status and corrective action plan
  • 🚨 Report concerns to your state environmental agency or call the EPA hotline: 1-800-426-4791
  • 🚨 Consider having your home's tap water independently tested by a certified lab

Frequently Asked Questions — ZIP 57528 Water Quality

Is tap water safe to drink in ZIP code 57528?+
Tap water in 57528 has a below-average water quality grade of D. While it is treated, there have been notable compliance issues. We strongly recommend using a certified NSF/ANSI 53 water filter for drinking and cooking, especially for vulnerable populations.
What is the lead level in 57528 tap water?+
The 90th percentile lead level in 57528 is 15.0 ppb (parts per billion). The EPA action level is 15 ppb. This is below the action level, but some health experts recommend a lead filter for families with young children.
Who provides tap water to 57528?+
Tap water in ZIP code 57528 is provided by TRIPP COUNTY WATER USER DISTRICT (EPA ID: SD4600520). This system serves approximately 4,860 residents. You can contact them directly for Consumer Confidence Reports, current advisories, and billing information.
What is the water source for 57528?+
ZIP code 57528 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 57528 have any active water quality violations?+
There are 1 health-based violation in the past 5-year record, but no currently unresolved violations according to EPA data. This means past issues have been addressed.
How do I get a copy of my water quality report for 57528?+
Your water utility — TRIPP COUNTY WATER USER DISTRICT — 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 "TRIPP COUNTY WATER USER DISTRICT Consumer Confidence Report." The EPA's ECHO database also has historical compliance data.
What water filter should I use in 57528?+
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 57528, with detected contaminants including Chlorine residual, a multi-stage filter or reverse osmosis system is recommended.
Is 57528 tap water safe for babies and infants?+
Infants are especially vulnerable to lead, nitrates, and microbial contaminants in drinking water. Given the detected lead level of 15.0 ppb in 57528, we recommend using a certified NSF/ANSI 53 water filter or certified bottled water for preparing infant formula. Always consult your pediatrician for guidance specific to your child's health.

Data Sources & Methodology

Water quality data for ZIP code 57528 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 TRIPP COUNTY WATER USER DISTRICT. 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 →