Twin Falls County, Idaho
Average Well Depth in Twin Falls, Idaho
Wells within 5 miles of Twin Falls were drilled to a median depth of 150 ft, and half were between 100 and 240 ft. After drilling, water typically stood about 60 ft below ground. The median well produced 25 gallons per minute. Based on 2,425 Idaho Department of Water Resources well records, updated October 2026.
Historical records within 5 miles of central Twin Falls, not a guarantee for any property. Only drilling confirms depth, water quality and yield. Disclaimer
How deep is my well going to be?
Depth changes from one street to the next. Check the wells closest to your exact address.
Are wells near Twin Falls getting deeper?
Wells drilled near Twin Falls in the 9990s have a median depth of 93 ft, 37 ft shallower than those from the 1950s (130 ft).
| Decade drilled | Median depth | Wells |
|---|---|---|
| 1950s | 130 ft | 43 |
| 1960s | 104 ft | 326 |
| 1970s | 120 ft | 634 |
| 1980s | 141 ft | 216 |
| 1990s | 160 ft | 18 |
| 2000s | 180 ft | 549 |
| 2010s | 244 ft | 344 |
| 2020s | 204 ft | 263 |
| 9990s | 93 ft | 31 |
Well drilling contractors near Twin Falls
Get a free quote from a licensed driller matched to Twin Falls County. No obligation.
Before you drill in Twin Falls
- Permit: a licensed Idaho driller files the drilling permit (a start card for a single-family home) with the Idaho Department of Water Resources.
- Health district: South Central Public Health District sets septic and well setback rules for Twin Falls County.
- City water: inside Twin Falls city limits, check whether you're required to connect to city water before planning a well.
- Buying land? The Premium Property Well Report adds nearby water quality, groundwater restrictions and a cost estimate for one property.
Twin Falls well questions
How deep are wells in Twin Falls, Idaho?
Wells within 5 miles of Twin Falls have a median depth of 150 feet, and half were drilled between 100 and 240 feet, based on 2,425 Idaho Department of Water Resources well records. Depth varies by location, so look up your exact address.
How much does it cost to drill a well in Twin Falls?
For a typical 100–240 ft household well with a pump system, a rough planning range is $7,600 to $21,500, based on Idaho averages of $28–65 per foot to drill, about $8 per foot for PVC casing and about $4,000 for the pump system. Basalt, steel casing or a long trench to the house cost more. Get a written quote from a licensed driller for a real price.
How deep is a shallow well near Twin Falls?
20% of recorded wells within 5 miles of Twin Falls are less than 100 feet deep. Shallow wells cost less to drill but are more exposed to surface contamination and seasonal water-level drops.
Do I need a permit to drill a well in Twin Falls?
Yes. A licensed Idaho driller files a drilling permit (a start card for a single-family household well) with IDWR before drilling. Ask South Central Public Health District about septic setbacks, and check whether Twin Falls requires a city water hookup inside city limits.
Well depth in nearby Idaho cities
Source: Idaho Department of Water Resources well records within 5 miles of central Twin Falls. Updated October 2026.