PlainWater
Counties → Iowa

Linn County, Iowa

Water Systems
83
Population Served
224,711
Total Violations
8,540
1,219 health-based
PFAS Detected
3
of 4 tested

Violation Analysis

91.6%
Systems with Violations
102.9
Avg Violations per System
14.3%
Health-Based Violations

Water Source Types

GW
46 systems (55%)
SW
4 systems (5%)

PFAS Contamination

4
Systems Tested
3
PFAS Detected
75.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Linn Iowa water systems by violation status, EPA SDWIS records.

No violations on record (4) One or more violations (46)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Cedar Rapids Water Department 141,831 35 Clean
Marion Municipal Water Dept 41,623 36 Clean
Hiawatha Water Dept 7,183 13 Detected
Mount Vernon Water Supply 4,527 37 Clean
Fairfax Water Supply 2,828 32 -
Center Point Water Supply 2,579 27 -
Ely Water Supply 2,328 52 -
Lisbon Water Supply 2,233 75 -
Palo Water Supply 1,407 42 -
Central City Water Supply 1,264 56 -
Springville Water Supply 1,164 17 -
Eagle Ridge 1,005 0 -
Pleasant Creek St Rec Area-North 1,000 40 -
Yes Five Seasons Cedar LLC 994 0 -
Marion Village 850 79 -
North Linn High School / Middle School 724 55 -
Coggon Water Department 701 165 -
Walker Water Works 688 35 -
Alburnett Water Supply 675 107 -
Linn Co Engineer and Secondary Roads 658 107 -
Cedar Terrace Mhc 600 122 -
The Depot Walford 506 55 -
Pleasant Creek St Rec Area-South 502 57 -
Alburnett Community School District 500 13 -
Epic Event Center 404 101 -
Triple Play LLC 400 214 -
Palisades Kepler - Park Office 308 94 -
Airport National Public Golf Complex 260 46 -
Glenbrook Cove Area 233 3 -
Country Manor Estates 228 294 -
Gaddis Estates HOA 220 41 -
YMCA Camp Wapsie 207 121 -
Gardner Golf Course 206 17 -
Prairieburg Muni. Water Supply 160 60 -
Howard H Cherry Scout Reservation 155 81 -
Wanatee Park 154 69 -
Camp Tanager 150 63 -
Pinicon Ridge C 150 176 -
Matsell Bridge A 150 81 -
Vern Acres (Oliphant Addition) 150 156 -
Sobaski Real Estate 120 0 -
Culvers Lawn and Garden 120 53 -
Lincolnway Investment Group 110 414 -
St Stephens Catholic Church 103 16 -
Indian Creek Nature Center 101 0 -
Fc United Soccer Club Inc 100 57 -
Oak Valley 100 242 -
Deer Ridge Homeowners Water Assc. 94 17 -
Twin Knolls Fourth/Fifth Addition 90 165 -
Mount Vernon Community Bible Church 88 132 -

Other Counties in Iowa

Polk County
38 systems · 552,627 served · 1,563 violations
Scott County
77 systems · 178,285 served · 5,956 violations
Johnson County
125 systems · 167,742 served · 10,912 violations
Black Hawk County
19 systems · 161,225 served · 824 violations
Story County
21 systems · 121,108 served · 1,299 violations
Woodbury County
32 systems · 99,461 served · 1,715 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Linn County? ▼
Linn County has 8,540 total drinking water violations across 83 water systems, of which 1,219 are health-based violations. 91.6% of systems have at least one violation.
How many people get water from Linn County systems? ▼
Water systems in Linn County serve approximately 224,711 people through 83 public water systems.
Has PFAS been detected in Linn County water? ▼
Of 4 water systems tested for PFAS in Linn County, 3 had PFAS detected (75.0% detection rate).
What types of water sources supply Linn County? ▼
Water systems in Linn County use GW (46 systems), SW (4 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 14.3% of Linn County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.