Tri County Pump & Well Service is the most experienced and trusted well company with over 15 years experience in the water well and pump industry. This experience provides our customers with the most experienced and qualified technicians the mountains have to offer. That quality service is why we have been voted the "Best Pump Company" in Mariposa County since we opened our doors. Having grown up in this beautiful area gives us the knowledge and expertise of our unique water needs. We pride ourselves in offering BETTER quality at a much lower price. We service all of Mariposa, Madera and Merced Counties. We specialize in well service, pump service, water systems, well inspections, water treatment and new installations. Well service Oakhurst, Well service Mariposa. We provide Emergency Well Service as well as maintenance and well installation.