PlainWater
Counties → Indiana

Clark County, Indiana

Water Systems
11
Population Served
186,708
Total Violations
1,313
170 health-based
PFAS Detected
3
of 9 tested

Violation Analysis

90.9%
Systems with Violations
119.4
Avg Violations per System
12.9%
Health-Based Violations

Water Source Types

GW
10 systems (91%)
SW
1 system (9%)

PFAS Contamination

9
Systems Tested
3
PFAS Detected
33.3%
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

Clark Indiana water systems by violation status, EPA SDWIS records.

No violations on record (1) One or more violations (10)

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
Indiana American Water - S. Indiana 104,445 1 Clean
Watson Rural Water Company 15,750 119 Clean
Sellersburg Water Department 15,655 221 Detected
Borden Tri-County Region 11,637 400 Clean
Charlestown/River Ridge 10,500 5 Clean
Indiana American Water - Charlestown 8,658 84 Detected
Rural Membership Water Corp. of Clark Co 8,250 41 Clean
Marysville Otisco Nabb Water Corp. 6,813 33 Detected
Washington Township Water 4,315 146 Clean
Indiana American Water - Rivers Edge 610 0 -
Sunflower Valley Water Co, Inc. 75 263 -

Other Counties in Indiana

Marion County
56 systems · 949,929 served · 5,652 violations
Lake County
108 systems · 539,424 served · 12,533 violations
Allen County
91 systems · 324,113 served · 5,221 violations
Hamilton County
66 systems · 229,377 served · 6,714 violations
St. Joseph County
221 systems · 218,797 served · 16,354 violations
Vanderburgh County
6 systems · 195,582 served · 332 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Clark County? ▼
Clark County has 1,313 total drinking water violations across 11 water systems, of which 170 are health-based violations. 90.9% of systems have at least one violation.
How many people get water from Clark County systems? ▼
Water systems in Clark County serve approximately 186,708 people through 11 public water systems.
Has PFAS been detected in Clark County water? ▼
Of 9 water systems tested for PFAS in Clark County, 3 had PFAS detected (33.3% detection rate).
What types of water sources supply Clark County? ▼
Water systems in Clark County use GW (10 systems), SW (1 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. 12.9% of Clark 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.