Well Maintenance Checklist: Annual Tasks for Well Owners
A practical annual maintenance checklist for California well owners. Inspections, testing, pressure checks, and when to call a professional.
Key Takeaways
- Inspect well cap, casing, and ground slope annually
- Check pressure tank, gauge, and flow; watch for short-cycling
- Test water annually for coliform, E. coli, nitrates
- Call C-57 driller for well structure, yield, or deepening; pump contractor for pump/tank issues
A well-maintained water well can last decades. Regular upkeep helps catch problems early, protects water quality, and extends the life of your pump and well system. Here's an annual checklist for California well owners.
Annual Inspections
Visual Check of Wellhead
At least once a year, inspect the visible parts of your well:
- Well cap — Should be securely sealed and above ground level to prevent surface water entry
- Casing — No cracks, corrosion, or settling that could allow contamination
- Ground slope — Ensure surface water drains away from the well, not toward it
Pressure Tank and Gauge
- Check that the pressure gauge reads in the normal range (typically 30–50 psi for most systems)
- Listen for short-cycling (pump turning on and off rapidly)—can indicate a failing pressure tank or switch
- Note any unusual noises from the pump
Flow and Pressure
- Run several faucets and note if pressure seems lower than usual
- If you have a flow meter or can measure output, compare to past years
- Sudden drops in flow or pressure may indicate pump issues, well yield decline, or plumbing problems
Annual Water Testing
Test your well water at least once a year. Minimum recommended tests:
- Total coliform bacteria — Indicates possible contamination
- E. coli — If positive, do not drink until resolved
- Nitrates — Especially important in agricultural areas
See our guide to well water testing in California for details on what to test, how often, and certified labs.
Seasonal Tips
Spring
- Inspect after winter; check for frost damage, settling, or erosion around the wellhead
- Schedule water testing if you didn't test in fall
- Clear debris and vegetation from around the well
Summer
- Monitor water use during peak demand; avoid over-pumping if you notice pressure drops
- In drought years, consider conservation to reduce stress on the well
Fall
- Prepare for winter; ensure well cap and casing are secure
- Test water before the holiday season if you'll have guests
Winter
- Protect pipes and equipment from freezing
- Ensure the well house or pitless adapter is insulated if applicable
When to Call a Professional
Contact a licensed contractor if you notice:
- No water or very low flow — Could be pump failure, well yield decline, or plumbing
- Dirty, cloudy, or discolored water — May indicate well or pump issues
- Strange odors or taste — Could be bacterial growth, contamination, or mineral changes
- Pressure tank or pump cycling abnormally — May need pump or pressure system repair
- Well cap damaged or loose — A C-57 contractor can repair or replace
- Suspected well structure problems — Cracking, settling, or contamination risk
For well drilling, deepening, repair, or destruction, you need a C-57 Well Drilling Contractor. For pump-only repairs (motor, pressure switch, etc.), a pump contractor (C-61/D-21) may be appropriate. When in doubt, start with a well driller—they can assess whether the issue is well-related or pump-related.
Keep Records
Maintain a simple log:
- Date of inspections and what you checked
- Water test results and lab reports
- Any repairs, pump replacements, or contractor visits
- Flow or pressure notes if you track them
This helps spot trends and is useful when selling your property or filing insurance claims.
Find a Licensed Driller
For well inspections, repairs, deepening, or new construction, use our California Well Driller Directory to find C-57 licensed contractors in your area. Every listing includes license and bond verification from the CSLB.