WaterVerge

Is Fredericksburg, IA Tap Water Safe to Drink?

Graded A, with 2 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓

987 residents served 1 water system PWSID: IA1940068
Overall Score
91.1 / 100
Violations
2 active
Last Updated
May 2026
Source
Groundwater
#153 of 436 in Iowa Top 12% nationally
Local Government
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
AGRADE
Water Quality Grade
91.1/100
waterverge.com
A 91.1/100

Fredericksburg, IA — Water Quality Report

Fredericksburg's drinking water received a grade of A (91.1 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 987 residents using groundwater.

Lead levels were measured at 1.1 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.

The system has 7 violations on record, including 0 health-based violations. 2 remain unresolved.

Data last updated: May 2026 · Source: EPA SDWIS, UCMR 5
Analysis

What to know about Fredericksburg's water

Fredericksburg ranks #153 out of 436 cities in Iowa for water quality, placing it mid-range in the state.

Fredericksburg relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.

As a small community water system, Fredericksburg may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

Quality Breakdown

Water quality score

See methodology →
91.1 out of 100 Grade A
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
44.1/45
A
Historical violation record including health-based and monitoring violations.
Lead & Copper
20/20
A
Lead at 1.1 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
5/10
D
Monitoring and reporting compliance with EPA regulations.
Source Risk
5/5
A
Water source: Groundwater.
Water Safety

Is Fredericksburg, IA water safe to drink?

Use Caution

Fredericksburg's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (91.1/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 987 residents using groundwater (wells).

2
Active Violations
1.1 ppb
Lead (90th %ile)
9 events
Disaster History

Recent water quality updates for Fredericksburg

A timeline of significant water quality events, violations, and data updates.

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Fredericksburg's water quality assessment. Grade: A (91.1/100).

Violation
1 drinking water violation recorded

Contaminants: Nitrate.

Violation
1 drinking water violation recorded

Contaminants: Nitrate.

Disaster
SEVERE STORMS AND FLOODING

Federal disaster declaration (FEMA DR-4289). Flood event — may have impacted local water infrastructure.

Violation
1 drinking water violation recorded

Contaminants: Nitrate.

Disaster
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING

Federal disaster declaration (FEMA DR-4281). Flood event — may have impacted local water infrastructure.

Key contaminant findings

Based on the most recent EPA sampling data for Fredericksburg's water supply.

Lead Within Limits
Detected: 1.1 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Violation history

Fredericksburg's water system has 7 total violations on record, including 0 health-based violations. 2 remain unresolved.

MROther
Most recent violations:
Oct 2020 Nitrate Resolved
Oct 2017 Nitrate Resolved
Oct 2016 Nitrate Resolved
Aug 2013 TTHM Resolved
Aug 2013 Total Haloacetic Acids (HAA5) Resolved

Flood & environmental risk

Chickasaw County has experienced 9 federally declared disasters since 1969. 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 Wapsipinicon River Near Tripoli.

SEVERE STORMS AND FLOODING
Flood FEMA DR-4289
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA DR-4281
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA DR-4184

Where does Fredericksburg's water come from?

Fredericksburg's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 987 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Wapsipinicon River Near Tripoli (river).

What Fredericksburg residents can do

Request your utility's CCR

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.

Monitor alerts during storms

Fredericksburg'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.

Contaminant Alerts

Top contaminants to know

View all ↓
Lead (90th percentile)
Inorganic / Heavy Metal
Safe
1.1 ppb
EPA Action Level: 15 ppb · 8% of limit
Safe Level
Compliance Record

Violation summary

7
Total violations
0
Health-based
2
Active / unresolved
Oct 2020
Most recent violation
Compliance Record

Violations & advisories

7 Total
2 Active
0 Health-based
5 Resolved
Violations by category
Nitrate Rule
3
Stage 2 Disinfectants and Disinfection Byproducts Rule
2
Consumer Confidence Rule
1
Jul 2008 Active
Consumer Confidence Rule
Other Violation 0
Active
Compliance Violation
Monitoring 0
Oct 2020 Resolved
Nitrate
Monitoring & Reporting
Monitoring & Reporting Resolved Sep 2021
Oct 2017 Resolved
Nitrate
Monitoring & Reporting
Monitoring & Reporting Resolved Sep 2018
Oct 2016 Resolved
Nitrate
Monitoring & Reporting
Monitoring & Reporting Resolved Sep 2017
Aug 2013 Resolved
TTHM
Monitoring & Reporting
Monitoring & Reporting Resolved Aug 2013
Aug 2013 Resolved
Total Haloacetic Acids (HAA5)
Monitoring & Reporting
Monitoring & Reporting Resolved Aug 2013
Industrial pollution

Top industrial polluters within 10 miles of Fredericksburg

Industrial polluters nearby

Reported releases to surface water by facilities near Fredericksburg, ranked by pounds discharged annually.

FacilityTop chemicalTo surface water (lbs/yr)Distance
TRIMARK CORP
Fabricated Metals · NA
NEW HAMPTON, IA50659
9.6 mi
AFINITAS
Nonmetallic Mineral Product · AFINITAS INC
NEW HAMPTON, IA50659
9.7 mi
ATEK METAL TECHNOLOGIES
Primary Metals · ATEK MANAGEMENT CO
NEW HAMPTON, IA50659
9.7 mi
HOMELAND ENERGY SOLUTIONS LLC
Chemicals · NA
LAWLER, IA52154
7.0 mi

Source: EPA Toxic Release Inventory (TRI) 2023

Environmental Risk

Flood & disaster history

9
Declared disasters
Oct 2016
Most recent
Flood
Most common type

Chickasaw County has experienced 9 federally declared disasters since 1969. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.

Oct 2016
SEVERE STORMS AND FLOODING
Flood FEMA #4289
Sep 2016
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA #4281
Jul 2014
SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING
Flood FEMA #4184
Sep 2005
HURRICANE KATRINA EVACUATION
Hurricane FEMA #3239
Jul 1998
SEVERE STORMS, TORNADOES AND FLOODING
Flood FEMA #1230
Jul 1993
SEVERE STORMS & FLOODING
Flood FEMA #996

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 1.1 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

Lead level trend (90th percentile)

EPA action level: 15 ppb
Lead has decreased by 2.9 ppb from 1993 (4.0 ppb) to 2023 (1.1 ppb).
Contaminant Rankings

See how Fredericksburg compares by contaminant

Explore where Fredericksburg ranks among all Iowa cities for specific contaminants.

Infrastructure

Water source & infrastructure

Primary Source
Groundwater
Operator
Local Government
Population Served
987
Water Systems
1
Water Source

Where Fredericksburg's water comes from

Groundwater

Fredericksburg's drinking water is drawn from underground aquifers through wells.

Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.

Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.

The system is operated by local government ownership and serves approximately 987 people through 1 water system.

Local Hydrology

Water bodies near Fredericksburg

Fredericksburg is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.

Wapsipinicon River Near Tripoli
river
Infrastructure

Water systems serving Fredericksburg

System Name PWSID Population Source
FREDERICKSBURG WATER SUPPLY IA1940068 987 GW
Regional Comparison

How Fredericksburg compares

Full Iowa rankings →

Fredericksburg's score of 91.1/100 is above the average of 72/100 among major Iowa cities. It outscores 10 of 10 nearby cities.

Fredericksburg (this city)
91.1
Ames
81.5
Iowa avg
72
City Profile

About Fredericksburg, IA

Wikipedia →

Fredericksburg is a city in Chickasaw County, Iowa, United States. The population was 987 at the time of the 2020 census.

Economic Profile
$62,583
Median Income
$157,284
Median Home Value
$839/mo
Median Rent
1%
Unemployment
Community
38.8
Median Age
486
People / sq mi
16.5%
College Educated
72.1%
Homeownership
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Frequently asked questions

Is Fredericksburg, IA tap water safe to drink?

Fredericksburg's water quality earned a grade of A (91.1/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #153 out of 436 cities tested in Iowa.

What contaminants are in Fredericksburg's water?

Lead was measured at 1.1 ppb (90th percentile). 7 violations are on record.

How is Fredericksburg'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 Fredericksburg?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Fredericksburg's water come from?

Fredericksburg's water is sourced from Groundwater. The city has 1 water system serving approximately 987 residents.

Is Fredericksburg's groundwater at risk of contamination?

Fredericksburg uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 7 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.

How does Fredericksburg's water compare to other cities?

Fredericksburg ranks #153 out of 436 cities in Iowa (better than 65% of state cities) and #1883 out of 15744 cities nationally (88th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Fredericksburg's small water system affect quality?

Fredericksburg's system serves approximately 987 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 7 violations on record.