What happened to East Porterville's wells?
East Porterville is the unincorporated community just east of the city, by the foothills. Many of its homes relied on private wells, and the 2012 to 2016 drought hit them especially hard. Homes without safe water got deliveries of tank water and bottled water. The state's dry well reporting system logged more than 650 household reports with Porterville addresses from 2014 to 2016.
Work on a permanent fix began in early 2016. Three state agencies teamed with Tulare County and local community groups to run new water lines. About 300 homes on emergency water were connected by March 2017, then about 450 that still had well water. By February 2018, 755 of the 1,100 eligible homes were on the City of Porterville's water system.
Most of the wells that failed were shallow. Where a Porterville dry well report listed a depth, half were 100 feet deep or less. On the basin's east side, the shallow aquifer sits in about the top 100 feet, per the State Water Board. Its staff report warns that falling groundwater levels can leave shallow wells dry.
New household wells here go much deeper now, per state well completion reports. For Porterville addresses, the median was about 180 feet in 1990 to 2009 and 310 feet in 2010 to 2019. Since 2020 it is 350 feet, and the middle half run 300 to 400 feet.
Private wells around Porterville, from Terra Bella to Springville
Porterville is the center of a large farming area known for citrus and livestock. Lindsay, about 10 miles north, calls itself Central California's Citrus Center. In the foothills above town, the Army Corps of Engineers dams the Tule River at Lake Success. Still, groundwater is the main water source for farms and towns across the Tule Subbasin.
Several nearby towns run small water systems of their own. Ducor, Poplar and Woodville pump groundwater, and Terra Bella draws on the Friant-Kern Canal and wells. Outside those systems, farmhouses and ranchettes pump from private wells. Up Highway 190 past Lake Success, so do many homes around Springville.
Depths change across this ground. South toward Terra Bella, the nine household wells on record since 2020 have a median depth of 600 feet. Around Strathmore, north of town, the median since 2020 is 400 feet. In the foothills near Springville, depths vary widely: from 1990 to 2009, the middle half ran 140 to 400 feet.
Tulare County Environmental Health calls nitrate the county's most common contaminant, found widely on the valley floor. It encourages anyone with a new well to test for bacteria and nitrate, plus DBCP in the valley. In the foothills, it adds a test for radiological contaminants. A state-certified lab can test your well, and we can point you to one.
The Tule Subbasin, SGMA and a new well near Porterville
The Tule Subbasin covers about 744 square miles, with Porterville the largest of its 13 towns and communities. The State Water Board calls it critically overdrafted, with water pumped out faster than it is recharged. After state officials found the local plans inadequate in 2023, the Board put the subbasin on probation in September 2024.
Board staff found the 2022 plans would let hundreds of wells go dry. Staff said the revised plans appear to fix that but still needed to confirm it. The Board decides when probation ends.
Household wells pumping 2 acre-feet a year or less, for home use only, skip state reporting and fees. The City of Porterville, Tulare County and local irrigation and water districts formed the Eastern Tule GSA in 2016. In that GSA, wells up to two miles from the Friant-Kern Canal must be metered, small household wells aside.
Tulare County Environmental Health permits every new well, and a C-57 contractor must do the work. The county and the GSA decide; we handle the application as the licensed driller. On the valley floor, the county sends it to the GSA, which can add conditions; foothill parcels skip that review. County rules also require the seal around the casing to reach at least 50 feet.
Well pump repair, pressure tanks and water lines for Porterville homes
When the tap goes dry, the well is not always the problem. A failed pressure switch, control box or pump can stop the water too. We track down the fault and fix it. When a submersible pump is worn out, we pull it and handle well pump replacement.
Pressure that comes and goes can point to the pressure tank. A waterlogged tank makes the pump short cycle, which means it turns on and off too often. We install well pressure tanks, switches and gauges on a pad beside the well head.
A new well needs a trench from the well to the house for the water line and the pump's power. Porterville sits near the southeast edge of the area we work. The drive from Riverdale is about 67 road miles, by Highways 41, 198, 99, 137 and 65. We take well and pump calls 24 hours a day, seven days a week.
Communities and areas we serve around Porterville: East Porterville, Strathmore, Poplar-Cotton Center, Terra Bella, Plainview, Woodville, Lindsay, Ducor, Springville, Tipton.
Porterville ZIP codes served: 93257, 93258.