Well Water Testing Requirements in Pennsylvania (PA)
Pennsylvania strongly recommends annual testing but does not mandate it. New wells require testing for bacteria, nitrate, lead, and pH. The DEP recommends testing but enforcement is limited. With ~1 million private wells, PA has the second-highest count nationally. Gas drilling areas have additional methane concerns. The state has approximately 1,000,000 private wells.
Required Contaminant Tests in Pennsylvania
Pennsylvania requires testing for the following 4 contaminants for new wells:
Common Contaminants in Pennsylvania Well Water
Based on geological conditions, land use patterns, and historical testing data, these contaminants are commonly found in Pennsylvania private wells. Even if not required by law, testing for these contaminants is recommended.
Testing Requirements by City in Pennsylvania
Local testing requirements may vary from state-level regulations. Some counties and municipalities have stricter rules than the state minimum. Below are details for major cities in Pennsylvania.
| City | Testing Required | Notes |
|---|---|---|
| Philadelphia | No | Limited private wells in metro |
| Pittsburgh | No | Allegheny County; former industrial area |
| Harrisburg | No | State capital; Dauphin County |
| Allentown | No | Lehigh County; karst geology |
| State College | No | Centre County; PSU research area |
Testing Recommendations for Pennsylvania Well Owners
- Even though your state does not require testing, the EPA recommends testing private well water annually for bacteria and nitrate.
- Radon in water is a concern in your state. Consider testing for radon, especially in bedrock wells.
- Nitrate contamination is common in your area. Test annually, especially if near agricultural land.
Understanding Pennsylvania's Well Water Regulations
Testing Frequency
Pennsylvania recommends annual testing of private well water, though this recommendation is not strictly enforced through penalties. The state advises all private well owners to test at least once per year for bacteria and nitrate, with additional testing based on local conditions.
New Well Requirements
Pennsylvania requires testing when a new well is constructed or an existing well is significantly modified. The required tests include bacteria (coliform/e. coli), nitrate, lead, and the well must pass these tests before being put into service for drinking water. Well construction must comply with state standards and a permit is required before drilling.
State Laboratory and Testing Resources
Pennsylvania operates a state laboratory or participates in a state lab network that provides water testing services, often at subsidized rates below commercial laboratory prices. Contact your state health department or environmental agency for current pricing and sample submission procedures. Many county health departments also offer basic bacteria testing, sometimes at no cost. The average cost for a comprehensive well water test in Pennsylvania is approximately $200, though a basic bacteria and nitrate screen may cost significantly less.
How Pennsylvania Compares
Pennsylvania has a minimal level of well water testing regulation. Below are other states with similar regulatory approaches.
| State | Testing Required | Test at Sale | Required Tests | Avg. Cost |
|---|---|---|---|---|
| Pennsylvania (PA) | No | No | 4 | $200 |
| Alabama (AL) | No | No | 1 | $150 |
| Alaska (AK) | No | No | 2 | $200 |
| Arizona (AZ) | No | No | 2 | $175 |
| Arkansas (AR) | No | No | 1 | $125 |
| California (CA) | No | No | 2 | $250 |
Check Other States
Use our well water testing lookup tool to check requirements for any state, or browse all 50 states ranked by testing strictness. If you are moving to or buying property in Pennsylvania, understanding the testing requirements is an important part of your due diligence.