PlainWater
Counties → Iowa

Story County, Iowa

Water Systems
21
Population Served
121,108
Total Violations
1,299
128 health-based
PFAS Detected
4
of 6 tested

Violation Analysis

85.7%
Systems with Violations
61.9
Avg Violations per System
9.9%
Health-Based Violations

Water Source Types

GW
16 systems (76%)
SW
5 systems (24%)

PFAS Contamination

6
Systems Tested
4
PFAS Detected
66.7%
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

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

No violations on record (3) 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
Ames Water Treatment Plant 55,177 34 Clean
Isu 42,000 49 Clean
Nevada Water Supply 6,925 212 Clean
Huxley Waterworks Dept 4,244 19 Clean
Story City Water Dept 3,357 40 Clean
Slater Muni Water Dept 1,548 40 -
Roland Water Supply 1,394 57 -
Gilbert Water Supply 1,211 164 -
Maxwell Water Department 859 46 -
Colo Water Supply 853 34 -
Cambridge Water Supply 832 43 Detected
Zearing Water Department 528 97 -
Collins Water Supply 505 88 -
McCallsburg Water Supply 353 74 -
Kelley Water Supply 304 8 -
New Horizons MHP LLC 298 0 -
Irua (Huxley) 205 0 -
Maple Grove Mhc 160 164 -
Hammond Estates 150 0 -
Squaw Valley South Subdivision 105 69 -
Alluvial Brewing Company 100 61 -

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
Black Hawk County
19 systems · 161,225 served · 824 violations
Woodbury County
32 systems · 99,461 served · 1,715 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Story County? ▼
Story County has 1,299 total drinking water violations across 21 water systems, of which 128 are health-based violations. 85.7% of systems have at least one violation.
How many people get water from Story County systems? ▼
Water systems in Story County serve approximately 121,108 people through 21 public water systems.
Has PFAS been detected in Story County water? ▼
Of 6 water systems tested for PFAS in Story County, 4 had PFAS detected (66.7% detection rate).
What types of water sources supply Story County? ▼
Water systems in Story County use GW (16 systems), SW (5 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. 9.9% of Story 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.