Cliff's Septic Tank & SewerSeptic service company in Sunnyside, WA
Cliff's Septic Tank & Sewer is a septic service company at 1536 Sunnyside Mabton Rd, Sunnyside, WA 98944, ranked #1 of 5 septic service companies in Sunnyside and rated 4.0 from 49 Google reviews. Open Monday to Saturday.
Sunnyside, WAUpdated 0 paid placements in any rankingHow we rank
Key facts
| Address | 1536 Sunnyside Mabton Rd, Sunnyside, WA 98944Get directions |
|---|---|
| Phone | (509) 837-4060 |
| Website | cliffssepticservice.com |
| Hours | Monday to Saturday: 7:30 AM – 5 PM |
| Google rating | 4.0 from 49 Google reviews |
Trades
Each trade shows the evidence we matched it on.
- Septicmain tradeGoogle main category
Service area
Serves Sunnyside and 4 towns within 25 miles: Grandview, Prosser, Toppenish and Wapato.
Based in Sunnyside, WAView on map
Opening hours
| Day | Hours |
|---|---|
| Monday | 7:30 AM – 5 PM |
| Tuesday | 7:30 AM – 5 PM |
| Wednesday | 7:30 AM – 5 PM |
| Thursday | 7:30 AM – 5 PM |
| Friday | 7:30 AM – 5 PM |
| Saturday | 7:30 AM – 5 PM |
| Sunday | Closed |
- Open evenings — no
- Open Saturdays
- Open Sundays — no
Reviews
ContractorsRanked reviews
No ContractorsRanked reviews yet
4.0from 49 Google reviews
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Questions about Cliff's Septic Tank & Sewer
How is Cliff's Septic Tank & Sewer ranked in Sunnyside?
Cliff's Septic Tank & Sewer is ranked #1 of 5 septic service companies in Sunnyside by CR Score, with 60 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.
What are Cliff's Septic Tank & Sewer’s hours?
Cliff's Septic Tank & Sewer is open Monday to Saturday. Its listed hours are Monday to Saturday, 7:30 AM – 5 PM. On Saturdays it is open 7:30 AM to 5 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.
What areas does Cliff's Septic Tank & Sewer serve?
Serves Sunnyside and 4 towns within 25 miles: Grandview, Prosser, Toppenish and Wapato. The list is based on the business's location and the usual service radius for septic and sewer service. Confirm your address is covered when you call.
What do Google reviews say about Cliff's Septic Tank & Sewer?
Cliff's Septic Tank & Sewer has a rating of 4.0 from 49 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.
How do I contact Cliff's Septic Tank & Sewer?
Call Cliff's Septic Tank & Sewer on (509) 837-4060. The business is at 1536 Sunnyside Mabton Rd, Sunnyside, WA 98944. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.
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Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.
Compare nearby septic service companies
| Business | Rank | CR Score | Google rating | License verified | Saturday | Sunday | Distance away |
|---|---|---|---|---|---|---|---|
| Cliff's Septic Tank & Sewer (this business) | — | 60 | 4.0 (49) | — | Yes | No | |
| Sunnymex Septic & Drain, LLC | #2 | 54 | 4.3 (12) | — | Yes | Yes | 2.3 mi |
| SunnyMex Septic & Drain LLC | #3 | 53 | 3.9 (7) | — | — | — | 6.5 mi |