PlainWater
Counties → Iowa

Black Hawk County, Iowa

Water Systems
19
Population Served
161,225
Total Violations
824
172 health-based
PFAS Detected
3
of 4 tested

Violation Analysis

94.7%
Systems with Violations
43.4
Avg Violations per System
20.9%
Health-Based Violations

Water Source Types

GW
19 systems (100%)

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

Black Hawk Iowa water systems by violation status, EPA SDWIS records.

No violations on record (1) One or more violations (18)

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
Waterloo Water Works 69,504 67 Detected
Cedar Falls Municipal Water Utilities 40,713 25 Clean
IA Regional Utilities Assoc (Waverly) 37,820 8 Clean
Evansdale Water Works 4,561 29 Clean
Hudson Water Supply 2,546 25 -
La Porte City Utilities 2,284 51 -
Elk Run Heights Water Supply 1,069 23 -
Dunkerton Muni Water Supply 842 19 -
Gilbertville Water Works 794 57 -
Cedar Falls Mobile Home Village 388 28 -
Lenwood Utilities 238 108 -
Pheasant Ridge Pro Shop 155 46 -
Kay Enterprises Inc 62 208 -
Farmstead Preschool 50 18 -
Gilbertville Depot 40 0 -
La Porte City Golf Club 40 80 -
Island Park Beach House 40 10 -
McFarlane Park 40 7 -
Barn Happy 39 15 -

Other Counties in Iowa

Polk County
38 systems · 552,627 served · 1,563 violations
Linn County
83 systems · 224,711 served · 8,540 violations
Scott County
77 systems · 178,285 served · 5,956 violations
Johnson County
125 systems · 167,742 served · 10,912 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 Black Hawk County? ▼
Black Hawk County has 824 total drinking water violations across 19 water systems, of which 172 are health-based violations. 94.7% of systems have at least one violation.
How many people get water from Black Hawk County systems? ▼
Water systems in Black Hawk County serve approximately 161,225 people through 19 public water systems.
Has PFAS been detected in Black Hawk County water? ▼
Of 4 water systems tested for PFAS in Black Hawk County, 3 had PFAS detected (75.0% detection rate).
What types of water sources supply Black Hawk County? ▼
Water systems in Black Hawk County use GW (19 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. 20.9% of Black Hawk 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.