How Often Should a Water Well Be Inspected?
Quick Answer
Annual inspection is the standard for private water wells. Texas has no mandatory inspection law, but yearly checks prevent most expensive failures.
Annual well inspection is the most common recommendation from well contractors and public health agencies alike. The water well serving your home delivers every drop you drink, cook with, and bathe in — inspecting it once a year costs far less than addressing a failure you didn’t see coming.
Why Annual Is the Standard
Most well components are below ground and invisible. A pressure tank sits quietly in your utility room, a pump hangs hundreds of feet down the casing, and a sanitary seal keeps surface contaminants out of your water supply. None of these announce early problems — until something fails.
Annual inspection catches:
- Bladder failure in the pressure tank — before the pump burns out from short-cycling
- Pump performance decline — before flow drops below household demand
- Wellhead seal deterioration — before a rainstorm sends surface bacteria into the casing
- Corrosion on electrical terminals — before a component fails mid-use
- Rising static water level changes — early warning in drought years
A one-hour annual inspection is typically $150–$350. A pump replacement is $1,200–$4,500. Emergency weekend service adds 50–100% to any repair cost.
What’s Covered in an Annual Inspection
Wellhead and Casing
- Visual inspection for cracks, corrosion, or shifting
- Sanitary seal condition — the grouted or sealed section between the casing and the ground that prevents surface water from entering
- Wellhead height — at least 12 inches above grade for standard domestic wells, or 36 inches in flood-prone areas (16 TAC §76.100 and §76.105)
- Cap or screen integrity — the cover that keeps insects, rodents, and debris out
Pressure System
- Pressure tank bladder test (tap test and pressure gauge observation)
- Cut-in and cut-out pressure settings
- Tank pressure checked against the pump’s output — mismatched settings reduce efficiency
Pump Performance
- Flow rate measurement (GPM)
- Pump amperage draw vs. nameplate rating
- Static water level and pumping water level — how much drawdown occurs under load
Electrical
- Control box and wiring connections
- Pressure switch contacts
- Grounding
When Texas Well Inspections Are Required
Real estate transactions: While not a legal mandate, most mortgage lenders require a water quality test. FHA, VA, and USDA loans consistently require a bacteria-free result. Many buyers also request a full inspection (not just water testing) as a condition of the purchase contract.
After flooding: If surface water has pooled around the wellhead, the sanitary seal may have allowed contaminated water into the casing. This calls for shock chlorination and a bacteria test at minimum.
After a positive bacteria test: Find the source of contamination, shock chlorinate, and retest — then establish more frequent testing (every 6 months) for the following year.
Water Quality Testing — How Often
The EPA recommends testing private well water at least once per year for bacteria (coliform), and every 2–3 years for nitrates and other contaminants. In North Texas, annual testing for bacteria and iron/manganese is practical given agricultural land use and the mineral content of many aquifers in the region.
Test annually: total coliform and E. coli bacteria, nitrates
Test every 2–3 years: iron, manganese, hardness, pH
Test if you notice changes: hydrogen sulfide (rotten egg smell), taste changes, discoloration
Schedule Your Annual Inspection
DFW Well Service provides annual inspections across all 19 North Texas counties. We provide a written summary of findings — useful for your records and for future real estate transactions.