TapSafetyReport
B69/100

GRISWOLD WATER SUPPLY — Water Quality Report 2026

Serving 1,008 people · Iowa

Water Source
Groundwater
County
—
System ID
IA1528010
Violations
12

Contaminant Test Results

2 contaminants above EPA health goals
ContaminantDetectedLimit (MCL)Status
Copper (90th percentile)
1.90 mg/L1.30 mg/LOver Limit
Lead (90th percentile)
0.003 mg/L0.015 mg/LAbove Goal

EPA Violation History

4

Violations (last 5yr)

4

Unresolved

0

Health-Related

TIER 3Unresolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2025 – July 31, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2025 – July 31, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2024 – July 31, 2024Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2024 – July 31, 2024Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Frequently Asked Questions About GRISWOLD WATER SUPPLY

Is GRISWOLD WATER SUPPLY water safe to drink?

GRISWOLD WATER SUPPLY water receives a grade of B (69/100), which is considered good. Out of 2 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.

What contaminants has GRISWOLD WATER SUPPLY detected?

2 contaminants were tested in GRISWOLD WATER SUPPLY's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).

Does GRISWOLD WATER SUPPLY have any EPA violations?

Yes, GRISWOLD WATER SUPPLY has 12 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MCL. 2 are health-based violations.

How many people does GRISWOLD WATER SUPPLY serve?

GRISWOLD WATER SUPPLY serves approximately 1,008 people, Iowa. The system provides water to 1 community: Griswold.

What type of water does GRISWOLD WATER SUPPLY provide?

GRISWOLD WATER SUPPLY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IA1528010.

How does GRISWOLD WATER SUPPLY compare to other utilities in Iowa?

GRISWOLD WATER SUPPLY scores 69/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Iowa state page for a full comparison of water systems.

Cities Served

Griswold