| Requirement Level | Who Pays | Result Validity | Authority |
|---|---|---|---|
| No state mandate; loan-required | Negotiated | Per loan type | Indiana Department of Environmental Management (IDEM) |
Overview: Indiana Well Water Rules
Indiana is among the top states by number of private wells. The state has no point-of-sale testing mandate. The Indiana Department of Environmental Management (IDEM) certifies labs and provides technical assistance. Northern Indiana has elevated nitrate risk; karst limestone areas in southern Indiana carry bacterial contamination risk from rapid groundwater flow.
What Must Be Tested in Indiana
| Parameter | Standard | Requirement |
|---|---|---|
| Coliform bacteria | Absent | Loan-required; annual recommended |
| Nitrate | ≤10 mg/L | Priority statewide; especially northern Indiana |
| pH | 6.5–8.5 | Loan-required |
| Additional parameters | Per region | Southern Indiana: add bacteria twice/year |
Finding a State-Certified Lab in Indiana
Indiana requires testing through a state-certified laboratory. To find a lab:
- Contact your county health department — many maintain a local lab referral list
- Search the Indiana Department of Environmental Management (IDEM) website for a list of certified labs
- Use our national certified lab finder guide for resources
Do not use a DIY kit or an uncertified online mail-in service for loan transactions or state-required testing. Results must come from a IDEM-certified laboratory.
Federal Loan Requirements in Indiana
Regardless of Indiana's state requirements, federal loan programs impose their own standards:
- VA loans: Always require a water quality test, results valid 90 days. VA guide →
- FHA loans: Require testing when proximity triggers are met (well within 100 ft of septic, etc.). FHA guide →
- USDA loans: Always require testing, results valid 180 days. USDA guide →
I’m buying with cash in Indiana — do I need a well water test?
For a cash purchase in Indiana, there is no legal requirement in most situations. However, conducting your own water quality test is strongly recommended. A basic certified lab test costs $100–$200 and is far less expensive than discovering contamination after closing.
How much does well water testing cost in Indiana?
A basic certified lab panel in Indiana (coliform + nitrates + pH) typically costs $75–$150. A comprehensive panel meeting loan requirements runs $150–$350. Some county health departments offer subsidized testing programs — call your county health office to check. See our full cost guide for more detail.
← Back to all state requirements
Disclaimer State requirements change. Always verify current rules with your Indiana Department of Environmental Management (IDEM) and your transaction’s real estate attorney before relying on this information.