County · Iowa

Linn County, Iowa: drinking water records

Name: Drinking water records for Linn County, Iowa
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 40 community water systems across 22 ZIP codes in Linn County, then find water-testing resources and available recent monitoring-station readings.

In focus40Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 4 of the 40 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 40 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	PFAS found	Health-based violations	Lead, 9 in 10 homes at or below
Cedar Rapids Water Department IA5715093	142,364	240	0	0	1.6 ppbbelow the action level
Marion Municipal Water Dept IA5751035	41,623	240	0	0	8.3 ppbbelow the action level
Hiawatha Water Dept IA5735045	7,183	300	3	0	0 ppbbelow the action level
Mount Vernon Water Supply IA5758021	4,527	120	0	0	1 ppbbelow the action level
Vern Acres (Oliphant Addition) IA5784303	150	0	0	1	5 ppbbelow the action level
Glenn Oaks Addition IA5784313	58	0	0	1	0 ppbbelow the action level
Chestnut Ridge IA5784312	33	0	0	1	1 ppbbelow the action level
Fairfax Water Supply IA5731032	2,828	0	0	0	2 ppbbelow the action level
Center Point Water Supply IA5718006	2,579	0	0	0	0 ppbbelow the action level
Ely Water Supply IA5728018	2,328	0	0	0	4 ppbbelow the action level
Lisbon Water Supply IA5748086	2,233	0	0	0	1.7 ppbbelow the action level
Palo Water Supply IA5765101	1,407	0	0	0	1.6 ppbbelow the action level
Central City Water Supply IA5720010	1,264	0	0	0	3 ppbbelow the action level
Springville Water Supply IA5782087	1,164	0	0	0	0 ppbbelow the action level
Eagle Ridge IA5751602	1,005	0	0	0	1.3 ppbbelow the action level
Marion Village IA5751601	850	0	0	0	1.9 ppbbelow the action level
Coggon Water Department IA5722053	701	0	0	0	5.8 ppbbelow the action level
Walker Water Works IA5792059	688	0	0	0	5 ppbbelow the action level
Alburnett Water Supply IA5704012	675	0	0	0	4 ppbbelow the action level
Cedar Terrace MHC IA5700600	600	0	0	0	0 ppbbelow the action level
Glenbrook Cove Area IA5751040	233	0	0	0	3.7 ppbbelow the action level
Country Manor Estates IA5784307	228	0	0	0	0 ppbbelow the action level
Gaddis Estates HOA IA5731302	220	0	0	0	3 ppbbelow the action level
Prairieburg Muni. Water Supply IA5772054	160	0	0	0	0 ppbbelow the action level
Oak Valley IA5784311	100	0	0	0	2 ppbbelow the action level
Deer Ridge Homeowners Water Assc. IA5765303	94	0	0	0	3 ppbbelow the action level
Twin Knolls Fourth/Fifth Addition IA5784326	90	0	0	0	1 ppbbelow the action level
Carlton Mobile Home Court IA5700601	85	0	0	0	0 ppbbelow the action level
West Post Estates Addition IA5731301	85	0	0	0	0 ppbbelow the action level
Big Creek Bluffs IA5784309	80	0	0	0	8 ppbbelow the action level
Bertram Water Supply IA5710001	75	0	0	0	1.7 ppbbelow the action level
Brittany Estates Homeowners Association IA5715301	72	0	0	0	0 ppbbelow the action level
Midway Water and Lighting IA5784302	72	0	0	0	7 ppbbelow the action level
Blairs Ferry Manor IA5784316	65	0	0	0	12 ppbbelow the action level
Meadow Knolls Addition IA5751301	53	0	0	0	2.5 ppbbelow the action level
Crestwood Acres IA5784314	50	0	0	0	4 ppbbelow the action level
Four Oaks Family and Childrens Services IA5715802	50	0	0	0	0 ppbbelow the action level
Windy Ridge Well Association IA5748300	45	0	0	0	2 ppbbelow the action level
Yes Five Seasons Cedar LLC IA5715602	994	0	0	0	not reported
Kurth Addition IA5784319	33	0	0	0	not reported

USGS · Monitoring stations

The water, more recently.

Available station readings in Linn County, Iowa. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in Linn County

22ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

Alburnett
Cedar Rapids
Center Point
Central City
Coggon
Ely
Fairfax
Hiawatha
Marion
Mount Vernon
Palo
Prairieburg
Robins
Springville
Walker

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

52202Alburnett
52213Center Point
52214Central City
52218Coggon
52219Prairieburg
52227Ely
52228Fairfax
52233Hiawatha
52302Marion
52314Mount Vernon
52324Palo
52328Robins
52336Springville
52341Hiawatha
52344
52352Walker
52401Cedar Rapids
52402Cedar Rapids
52403Cedar Rapids
52404Cedar Rapids
52405Cedar Rapids
52411Cedar Rapids

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASChoosing a PFAS filterPFAS was found in 1 of the 4 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter11 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near Linn County

All Iowa counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.