How long do water wells last?

A properly constructed water well typically lasts 30-50 years, though many wells remain productive for much longer. The lifespan depends on aquifer conditions, water quality, well construction, and maintenance. Wells in sandy aquifers may experience screen clogging earlier. Wells tapping stable bedrock aquifers often last 50+ years. The pump will need replacement every 10-15 years regardless of well condition.

When is a new well better than rehabilitation?

A new well is typically better than rehabilitation when: the aquifer itself is depleted (not just the well), casing is severely corroded or collapsed, contamination sources cannot be eliminated, well construction doesn't meet current codes, rehabilitation costs exceed 40-50% of new well cost, or the well has failed rehabilitation attempts before. A new well also makes sense when you need significantly more water than the current well can provide.

How much does it cost to drill a new well vs rehabilitate an old one?

In Southern California, a new residential well typically costs $15,000-$50,000+ depending on depth (often 300-600+ feet). Well rehabilitation costs $3,000-$15,000 depending on the problems and methods used. However, rehabilitation may only provide temporary improvement, while a new well provides decades of service. Compare total cost of ownership, not just upfront cost.

What are the signs my well is failing?

Key warning signs include: declining water yield that doesn't recover, pump running dry despite adequate water table, increasing sediment or sand in water, persistent water quality problems (contamination that keeps returning), changes in water taste or odor, and need for progressively more pump replacements. A well inspection with video camera can reveal structural problems like casing damage or screen failure.

Can a dry well recover?

It depends on why the well went dry. If the aquifer temporarily dropped during drought, the well may recover when water tables rebound. However, if the aquifer is permanently depleted, the well won't recover on its own. If the well structure has failed (clogged screens, collapsed casing), the well may need rehabilitation or replacement even if water is present. A professional evaluation can determine if recovery is possible.