Septic System Installation in Union Gap, WA
Whether you are building a new home in Union Gap or replacing a system that has reached the end of its life, septic installation is a project that starts with the soil. The right system depends on your lot, your soil and the size of your household.
Request a call and a local septic company that installs systems in Union Gap and Yakima, Moxee, Selah will explain the process from site evaluation to final inspection.
The steps of a new septic installation
Expect five stages: site and soil evaluation, system design, permit approval, construction, and inspection before the trenches are covered. Weather and permit review times affect the schedule more than the digging itself, which often takes only a few days once everything is approved.
Conventional and alternative systems
A conventional system is the simplest and usually the least expensive to maintain. Alternative systems add pumps, controls or treatment steps so they can work in difficult soil. Around Union Gap, the soil on your specific lot is what decides which category you fall into.
Working with local regulators
Septic rules exist to protect groundwater and neighbors' wells. Before installation, plans are reviewed for setbacks from wells, property lines and water. Inspectors typically check the work before it is covered. Ask your installer what approvals are needed in Union Gap and how long review usually takes.
What you are paying for in a new system
A new system quote covers the soil evaluation and design, permits, the tank, pipe and field materials, excavation and backfill, and the final inspection. Ask whether site restoration such as grading and seeding is included, and whether the quote assumes a conventional system or an engineered one.
Caring for a new septic system
Keep a copy of the design and as-built drawing, schedule your first pumping as recommended, and keep vehicles and structures off the tank and field. Plant only grass over the dispersal area and direct roof and yard runoff away from it. Systems with pumps or treatment units need regular service to stay under warranty.
Choosing an installation company
Look for experience with the soils and systems common around Union Gap and Yakima, Moxee, Selah, clear written quotes and a plan for permits and inspections. A good installer explains tradeoffs between system types rather than pushing one option.
How long a new system takes near Union Gap
Soil testing, design and permit review usually take longer than construction. In Yakima County, wet seasons and frozen ground can delay soil evaluations, and review times vary through the year. Once the permit is in hand, most installations take a few days to a couple of weeks.
What to avoid on a new system near Union Gap
Avoid choosing an installer on price alone, starting before the permit is approved, or placing the field in a low spot that stays wet. Think about future plans for the yard, since a pool, addition or outbuilding cannot go over the field later.
Replacing an old system in Union Gap
When a system near Union Gap fails, replacement often means a new drain field in a fresh part of the yard. The old tank may be pumped, crushed and filled, or reused if it is sound. Yakima County usually requires a permit and a final inspection. Ask for the as-built drawing once the work is done.
What Union Gap's soil means for a new system
The USDA soil survey rates most mapped soils near Union Gap as very limited for septic absorption fields. New systems here often need a mound, pressure distribution or another engineered design, which your soil test will confirm. Union Gap gets about 20 inches of precipitation a year, so water table limits are less common, though your soil test still decides the design. About 2 months below freezing mean pipes and components must sit deep enough or be insulated, and installation is usually easiest outside winter.
Local conditions in Union Gap that affect septic installation
Among the mapped soils within about two miles of central Union Gap, the USDA soil survey rates 73% as very limited for septic absorption fields, 27% as somewhat limited and 0% as not limited. The most common drainage class is well drained. Soils like these often call for careful system design, such as a larger drain field, a mound or another engineered system, and a site evaluation before any new installation or replacement.
Union Gap averages about 20 inches of precipitation a year, and December is usually the wettest month. Average temperatures stay below freezing for about 2 months a year, with December averaging 28°F, so tank lids and shallow lines benefit from a layer of snow or mulch rather than being cleared bare.
Sources: USDA NRCS Soil Survey (SSURGO), Soil Data Access; NASA POWER long-term climatology. Soil ratings describe mapped soil types near the city center and do not replace a site evaluation of your property.
What the soil around Union Gap means for septic installation
By drainage class, the USDA soil survey maps the land around Union Gap as 49% well drained, 30% somewhat poorly drained, 18% somewhat excessively drained, 3% moderately well drained. With 30% of the soil poorly drained, a new or replacement field here is often larger or raised, and a soil test comes before any design.
Source: USDA NRCS Soil Survey (SSURGO), Soil Data Access
Septic companies near Union Gap
These are the septic companies in our directory closest to Union Gap, with straight-line distance. Call any of them directly, or send one request and we will pass it to the best match.
- Bill's Septic Service, Union Gap, WA, 0.5 mi
- Cliff's Septic, Union Gap, WA, 0.5 mi
- Acme Septic Service, Union Gap, WA, 0.5 mi
- Selah Septic Service, Union Gap, WA, 1.3 mi
- Lowrie Glenn Backhoe, Selah, WA, 6.5 mi
- Septic Design Specialists LLC, Selah, WA, 9.7 mi
Septic Installation in nearby towns
We also cover septic installation in these towns near Union Gap:
About Union Gap, WA
Union Gap is in Yakima County, Washington. About 6,439 people live there, across 5.6 square miles of land (about 1,155 per square mile).
Septic Installation questions in Union Gap
- Can I install a septic system myself?
- Most areas require licensed designers or installers and inspections. Check with the Yakima County health department before planning any work yourself.
- How big does my septic tank need to be?
- Tank size is usually based on the number of bedrooms and local code. Your designer will size the tank and field for your home.
- Can a replacement system go in the same place?
- Sometimes. It depends on the condition of the soil in the old field and local rules. Many replacements use a new area of the yard.
- Is SepticTank.com the installer?
- No. SepticTank.com connects you with an independent local septic company that serves Union Gap. That company designs, installs and prices the system.