Indiana Water Quality & Safety Report
44 ZIP codes · 128 water systems · IPC plumbing code · Updated 2026-03-16
Data: EPA SDWIS, NWS, State plumbing boards, Rewiring America Last verified: 2026-03-16
Overview
We track water quality, weather alerts, plumbing regulations, and energy rebates for 44 ZIP codes across Indiana, covering 128 community water systems that serve approximately 2,932,546 people.
36 of 44 ZIP codes (82%) have recorded EPA violations. 97 health-based violations have been documented.
Active Weather Alerts
10 active alerts in Indiana including 10 warnings. Severe weather can directly affect tap water quality — flooding, power outages, and infrastructure damage may lead to boil-water advisories.
| Alert | Severity | Areas |
|---|---|---|
| Flood Warning | Severe | Edwards, IL; Gallatin, IL; Wabash, IL; White, IL; Gibson,… |
| Flood Warning | Severe | Gallatin, IL; Wabash, IL; White, IL; Gibson, IN; Posey, IN |
| Flood Warning | Severe | Noble, IN |
| Flood Warning | Severe | Allen, IN; De Kalb, IN; Defiance, OH |
| Flood Warning | Severe | Lawrence, IN; Martin, IN |
Plumbing Regulations
Indiana follows the Indiana Plumbing Code (based on IPC) (2020 edition).
- Plumbing code: IPC (2020)
- Homeowner DIY: Licensed plumber required
- Water heater permit: Required
- Annual backflow test: Required
Energy & Water Rebates
Across 44 tracked ZIP codes in Indiana, residents have access to an average of 5 water-related rebate programs — including incentives for heat pump water heaters, efficient fixtures, and plumbing upgrades.
Check rebates for your ZIP code →
Areas with Most Violations
| ZIP Code | City | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|---|
| 46350 | La Porte | — | 244 | 5 | SHADY GROVE MOBILE HOME PARK |
| 46526 | Goshen | — | 94 | 8 | GOSHEN WATER UTILITY |
| 47374 | Richmond | — | 81 | 2 | INDIANA AMERICAN WATER - RICHMOND |
| 46383 | Valparaiso | — | 64 | 1 | VALPARAISO DEPARTMENT OF WATER WORKS |
| 46601 | South Bend | — | 28 | 3 | SOUTH BEND WATER WORKS |
| 46801 | Fort Wayne | — | 26 | 3 | FORT WAYNE - 3 RIVERS FILTRATION PLANT |
| 46011 | Anderson | — | 25 | 10 | ANDERSON WATER DEPARTMENT |
| 46901 | Kokomo | — | 22 | 2 | INDIANA AMERICAN WATER - KOKOMO |
| 47901 | Lafayette | — | 19 | 4 | LAFAYETTE WATER WORKS |
| 46060 | Noblesville | — | 18 | 7 | INDIANA AMERICAN WATER - NOBLESVILLE |
Areas with No Violations
| ZIP Code | City | Safety Score | System | Population |
|---|---|---|---|---|
| 46030 | Arcadia | — | ARCADIA WATER DEPARTMENT | 1,515 |
| 46035 | Colfax | — | COLFAX WATER COMPANY | 690 |
| 46048 | Ingalls | — | INGALLS WATER COMPANY | 7,600 |
| 46142 | Greenwood | — | INDIANA AMERICAN WATER - NORTHWEST | 210,510 |
| 46952 | Marion | — | MARION CITY WATER WORKS | 28,363 |
| 47302 | Muncie | — | INDIANA AMERICAN WATER - MUNCIE | 74,030 |
| 47629 | Newburgh | — | INDIANA AMERICAN WATER - NEWBURGH | 22,215 |
| 47906 | West Lafayette | — | PURDUE UNIV. WATER WORKS | 50,000 |
Lead & Copper
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
- High risk (Zone 1): 0 ZIP codes (0%)
- Moderate risk (Zone 2): 0 ZIP codes
- Low risk (Zone 3): 0 ZIP codes
All 44 ZIP Codes in Indiana
- 46001 (Alexandria) — 9 violations
- 46011 (Anderson) — 25 violations ⚠
- 46030 (Arcadia)
- 46031 (Atlanta) — 7 violations
- 47401 (Bloomington) — 10 violations ⚠
- 46032 (Carmel) — 15 violations ⚠
- 46034 (Cicero) — 13 violations ⚠
- 46035 (Colfax)
- 47201 (Columbus) — 13 violations ⚠
- 47933 (Crawfordsville) — 13 violations ⚠
- 46307 (Crown Point) — 13 violations
- 46514 (Elkhart) — 9 violations
- 46036 (Elwood) — 2 violations ⚠
- 47701 (Evansville) — 3 violations
- 46037 (Fishers) — 9 violations ⚠
- 46801 (Fort Wayne) — 26 violations ⚠
- 46040 (Fortville) — 2 violations
- 46041 (Frankfort) — 2 violations
- 46044 (Frankton) — 3 violations
- 46526 (Goshen) — 94 violations ⚠
- 46142 (Greenwood)
- 46320 (Hammond) — 17 violations
- 46201 (Indianapolis) — 11 violations ⚠
- 46048 (Ingalls)
- 47546 (Jasper) — 1 violation
- 47130 (Jeffersonville) — 1 violation
- 46050 (Kirklin) — 13 violations ⚠
- 46901 (Kokomo) — 22 violations ⚠
- 46350 (La Porte) — 244 violations ⚠
- 47901 (Lafayette) — 19 violations ⚠
- 46051 (Lapel) — 13 violations ⚠
- 46952 (Marion)
- 46410 (Merrillville) — 14 violations ⚠
- 46360 (Michigan City) — 5 violations
- 46544 (Mishawaka) — 8 violations
- 47302 (Muncie)
- 47629 (Newburgh)
- 46060 (Noblesville) — 18 violations ⚠
- 47374 (Richmond) — 81 violations ⚠
- 46601 (South Bend) — 28 violations ⚠
- 47801 (Terre Haute) — 2 violations ⚠
- 46383 (Valparaiso) — 64 violations ⚠
- 46580 (Warsaw) — 3 violations
- 47906 (West Lafayette)
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Weather alerts: National Weather Service (NWS)
- Regulations: State plumbing boards, ICC, IAPMO
- Rebates: Rewiring America
Updated daily.