If your well is producing sand, losing yield, or a video inspection shows damaged screens, you're probably wondering about replacement costs. The answer is complicated — true screen replacement isn't always possible, but there are often better alternatives.
Screen Problems?
We can inspect your well and recommend the most cost-effective solution for your specific situation.
📞 Call (760) 440-8520
Schedule InspectionWhat Is a Well Screen?
The well screen is the intake section at the bottom of your well that allows water in while keeping sand and sediment out. Depending on your well type:
- Screened wells: Have a slotted or perforated section (common in sand/gravel aquifers)
- Open-hole wells: Have no screen — rock formations are stable enough to be open (common in granite)
- Gravel-packed wells: Screen surrounded by filter gravel for fine sediment control
Cost Summary
| Option | Cost Range | When Appropriate |
|---|---|---|
| Chemical rehabilitation | $3,000-$8,000 | Mineral scale buildup |
| Mechanical cleaning | $2,000-$5,000 | Sediment/biofilm buildup |
| Liner installation | $5,000-$15,000 | Screen damaged but casing okay |
| Screen replacement | $8,000-$20,000+ | When structurally possible |
| New well | $20,000-$50,000+ | Beyond repair, or more economical |
Option 1: Well Rehabilitation ($2,000-$8,000)
Often the best first step. Rehabilitation can restore a significant percentage of lost yield without replacing anything.
Chemical Treatment ($3,000-$8,000)
Acids or other chemicals dissolve mineral deposits blocking screen slots:
- Process: Pump pulled, chemicals injected, soaked, surged, pumped out
- Best for: Iron/manganese scale, calcium carbonate deposits
- Results: 50-100% yield recovery possible
- Limitations: Won't fix physical screen damage
Mechanical Cleaning ($2,000-$5,000)
Physical brushing and surging to remove buildup:
- Process: Wire brushing, high-pressure jetting, air surging
- Best for: Bacterial slime, loose sediment, light scale
- Often combined: With chemical treatment for best results
Combined Rehabilitation ($4,000-$10,000)
Chemical + mechanical treatment together for maximum effectiveness.
Option 2: Liner Installation ($5,000-$15,000)
When screens are damaged but the well casing is sound, a liner can salvage the well:
How It Works
- A smaller-diameter casing (liner) is lowered inside the existing well
- New screen section on the liner sits inside/below the damaged area
- Annular space is sealed to prevent bypass
- New pump sized for smaller diameter is installed
Cost Breakdown
- Liner materials: $2,000-$6,000 depending on depth and diameter
- Installation labor: $2,000-$5,000
- New pump (smaller): $1,000-$3,000
- Total: $5,000-$15,000
Limitations
- Reduces well diameter (limits pump size)
- May reduce maximum yield
- Not possible if casing is also damaged
- Well must be straight enough to accept liner
Option 3: True Screen Replacement ($8,000-$20,000+)
Actually removing and replacing the screen is often not possible because:
- Screen is permanently attached to casing
- Well construction doesn't allow removal
- Gravel pack would collapse
- Formation has shifted around screen
When It's Possible
Screen replacement may be feasible for:
- Telescoping screen designs (screen is separate piece)
- Shallow wells with accessible screens
- Wells specifically designed for maintenance access
Cost Factors
- Depth: Deeper = more expensive
- Screen type: Stainless steel vs. PVC
- Well condition: Complications add cost
- Re-development: New screen needs to be developed
Option 4: New Well ($20,000-$50,000+)
Sometimes a new well is actually the most economical choice:
When New Well Makes Sense
- Rehabilitation cost exceeds 50% of new well cost
- Multiple problems (screen, casing, low yield)
- Well is very old with uncertain remaining life
- Better water or more yield expected at new location
- Regulatory issues with existing well
Cost Comparison
Example scenario:
- Liner + pump: $12,000
- Remaining well life: 10-15 years
- New well: $35,000
- Expected life: 30-50 years
If the old well is already 25 years old and has other issues, the new well may be the better investment.
Signs Your Screen Needs Attention
Declining Yield
Well produces less water than it used to. This often indicates screen blockage from:
- Mineral scale (iron, calcium, manganese)
- Bacterial slime (iron bacteria)
- Sediment accumulation
Sand in Water
Sand or sediment coming through means screen is damaged or deteriorated:
- Slots have enlarged (corrosion)
- Screen has holes
- Gravel pack has migrated
Pump Problems
Sediment from failing screens damages pumps:
- Premature pump failures
- Sand-locked impellers
- Worn check valves
Diagnostic Steps
Video Inspection ($300-$600)
A downhole camera shows exactly what's happening:
- Screen condition (scale, damage, holes)
- Casing condition
- Sediment accumulation
- Helps choose the right repair approach
Flow Test ($200-$400)
Measures current yield vs. original to quantify decline.
Water Quality Test ($100-$300)
Identifies iron, manganese, or bacteria that may be causing blockage.
Prevention
Extend screen life with preventive maintenance:
- Periodic rehabilitation: Clean before problems become severe
- Treat iron bacteria: Shock chlorination annually if present
- Monitor yield: Catch decline early
- Address water quality: Treatment reduces mineral deposition
Get an Accurate Diagnosis
Before spending money on repairs, know exactly what you're dealing with. We can inspect your well and provide an honest assessment of your options.
- ✅ Video inspection
- ✅ Yield testing
- ✅ Water quality analysis
- ✅ Written repair options with pricing
📞 Call (760) 440-8520
Schedule Inspection