How Can You Drought-Proof a Private Water Well System?

Quick Answer

Drought-proofing includes adding a storage tank, lowering the pump, adjusting pressure settings, deepening the well, or developing a backup water supply.

The best time to drought-proof your well system is before drought arrives. Retrofits during a drought are more expensive, harder to schedule (contractors are busier), and sometimes too late to prevent pump failure. Here’s a layered approach — from low-cost adjustments to major upgrades — that makes well systems more resilient.

Layer 1: Baseline Preparedness (Low Cost)

Know Your Well

Start with information. Locate and review your TDLR well completion report — it documents total depth, static water level at time of drilling, casing depth, and formation type. This establishes a baseline.

Have a licensed contractor measure the current static water level and compare it to the original report. If levels have dropped over the years, your margin before drought stress is already reduced.

Verify Pump Position

The pump should be set well below the minimum expected water level during drought. If your pump is positioned near the current water level, lowering it adds meaningful drought buffer.

Cost: $300–$800 for pump repositioning by a licensed contractor.

Install Dry-Run Protection

If your pump control doesn’t have a low-pressure cutoff, add one. This single device prevents the most expensive drought failure scenario: a pump running dry and burning out.

Cost: $100–$300, including installation.

Ensure Pressure Tank is Properly Sized and Functioning

An adequately sized, properly charged pressure tank reduces pump starts — critical when the well is producing slowly. Verify the pre-charge pressure is 2 PSI below the pump cut-in pressure. A waterlogged pressure tank (failed bladder) causes excessive cycling and should be replaced immediately.

Cost: Pressure tank replacement $400–$900; pre-charge adjustment free or minimal.

Layer 2: Storage Buffer (Moderate Investment)

A storage tank is the most practical drought-resilience upgrade for most North Texas well owners. The concept: the well fills a large storage tank slowly (overnight, when household demand is low), and the house draws from the tank rather than directly from the well.

This decouples household demand from real-time well yield. If the well produces 1 GPM during drought, it still delivers 1,440 gallons per day — enough for most households — if given 24 hours to fill storage.

Sizing a Storage Tank

Household	Daily Use	Recommended Storage
2 people	150–200 gal/day	500–1,000 gallons
4 people	300–400 gal/day	1,000–2,500 gallons
4 people + irrigation	500–800 gal/day	2,500–5,000 gallons

System Configuration

The simplest setup: well fills the tank via a float valve; a booster pump pressurizes the house supply from the tank. This adds a pump, but that pump runs at full design capacity from a reliable supply rather than cycling against a stressed well.

Cost: $1,500–$5,000 installed depending on tank size and site conditions.

Layer 3: Well Deepening (Larger Investment)

If your well targets a formation that dries up or dramatically reduces yield during drought, deepening to a more reliable aquifer zone can solve the problem permanently.

In North Texas, this often means deepening from a shallow water table zone into the Trinity or Woodbine aquifer, or deepening within the Trinity to reach a zone with better productivity.

Best candidates for deepening:

Wells shallower than 200 ft in areas where the deeper Trinity is known to be productive
Wells that have experienced repeated drought-related yield loss
Wells where regional water level data shows the current target zone is drought-sensitive

Cost: Typically $5,000–$15,000 depending on depth added and formation.

Layer 4: Backup Water Source

For properties where well reliability is critical — horse operations, small farms, large households — developing a secondary water source provides genuine redundancy.

Options include:

A second well targeting a different depth or formation ($8,000–$20,000)
A large cistern filled by rainwater harvesting for irrigation use
A negotiated connection to a nearby rural water co-op if service is available
Haul water infrastructure — a large buried cistern with a fill port for tanker deliveries

Drought-Proofing Checklist

TDLR completion report on file and water level baselined
Pump set below expected drought water level
Dry-run protection (low-pressure cutoff) installed
Pressure tank correctly sized and pre-charged
Storage tank in place or budgeted
WaterSense fixtures installed to reduce baseline demand
Irrigation system evaluated for efficiency
Contractor’s assessment of deepening potential on file

Frequently Asked Questions

What is the most cost-effective drought-proofing upgrade for a typical well?

For most North Texas homeowners, adding a storage tank is the highest-value upgrade. A 1,500–3,000 gallon storage cistern gives you one to several days of household water reserve regardless of what the well is doing at any given moment. If the well slows during drought, the tank bridges the gap while the aquifer recovers overnight. Cost is typically $1,500–$4,000 installed.

How far down should a pump be set in the well casing?

A pump is typically set 10–20 feet above the bottom of the well to avoid drawing sediment, and should be positioned well below the expected minimum water level during drought. If your well is 300 feet deep and the water level historically drops to 250 feet during severe drought, the pump should be set around 260–270 feet. A contractor can calculate the appropriate setting based on your well's completion report and historical data.

Is a low-yield well worth drought-proofing or should I just drill a new one?

It depends on the cause of the low yield. If the existing well has adequate depth but the aquifer in your area has limited productivity, a new well nearby will likely have the same limitation. If the formation has better productivity at greater depth, deepening the well or drilling a new deeper well makes sense. A storage tank is often a cost-effective bridge for marginally low-yield wells in areas where the aquifer is otherwise reliable.

Can I add a second well on my property for drought redundancy?

Yes, with GCD approval and TDLR permitting. A second well targeting a different aquifer depth provides genuine redundancy. This is most useful on larger properties where a second well can be sited at a meaningful distance from the first, accessing a somewhat different zone of the aquifer. The cost is the same as a new primary well — typically $8,000–$20,000 — so it's usually reserved for properties where water security is a high priority.

What is a pump saver or low-pressure cutoff device?

A pump saver (also called a dry-run protection device or low-pressure cutoff) is an automatic switch that shuts off the pump when outlet pressure drops below a set threshold, indicating the pump may be running without adequate water. It protects pump motors from dry-run damage during drought. Most modern pump control boxes include this feature; older systems can have it added for $100–$300.

Does deepening a well always help during drought?

Not always. Deepening helps when there is a more productive aquifer zone below the current well bottom that is less affected by drought. But if the deeper formation has poor productivity or the same drought vulnerability, deepening just costs money without solving the problem. A contractor can evaluate whether the local formation makes deepening worthwhile based on logs from nearby wells and regional aquifer data.

Request a Well Evaluation

Tell us what you are seeing on the property — slow recovery, sediment, pressure changes — and we will follow up.