San Diego & Escondido · Open Mon to Sat

Free water testing and pool supplies at two stores.

Bring a sample, leave with a plan.

GoogleReviews for both stores Since 1974In San Diego County C-53CSLB #1063945 CPOCertified · Insured PentairJandyHaywardWarranty center
At the store

What we do at the counter.

Free water testing

Bring a sample in a clean bottle, filled elbow-deep away from a return jet. We test chlorine, pH, alkalinity, calcium hardness, stabilizer, and salt, then write out what to add, how much, and in what order. No purchase needed.

Pool chemicals

Chlorine tabs, liquid chlorine, shock, acid, salt, balancers, stabilizer, algaecide, and clarifiers, with advice from people who service pools for a living.

Pool and spa supplies

Spa chemicals, filters, and covers alongside the pool aisle, plus test kits, brushes, poles, nets, and vacuum heads.

Pool equipment sales

Pumps, filters, heaters, salt systems, automation, and automatic cleaners sold at the counter. Buy it here and have our crew install it, or take it home. We're an authorized Pentair, Jandy, and Hayward warranty center, so warranty claims come back to the same counter.

Parts and special orders

O-rings, lids, gauges, pump parts, and cleaner parts. Bring the old part or a photo of the equipment label and we'll match it or order it.

Filter cartridges and grids

Replacement cartridges and DE grids for common filters, in stock or special-ordered.

Floats, toys, and games

Floats, toys, and games for the summer, in stock all season.

Free advice

Ask. The people at the counter service pools for a living.

Commonly asked questions

How do I take a water sample?

Use a clean bottle (a rinsed water bottle is fine). Reach in elbow-deep, away from a return jet and the skimmer, and fill it. Bring it in the same day if you can; a sample left in a hot car for two days isn't your pool anymore.

How often should I test?

If you're on weekly service, your tech tests every visit. If you're doing it yourself, test chlorine and pH at least twice a week in summer, and bring a sample to the store monthly for the full panel (alkalinity, calcium, stabilizer, salt).

Why is my calcium always high?

Local tap water is hard, and every time the pool evaporates and you top it off, the calcium stays behind and the new water adds more. Managing it means keeping pH in line, and every few years, a partial drain and refill.

Can you identify a part from a photo?

Usually. Bring the old part or a clear photo of the part and the equipment label (brand and model) and we'll match it. If we don't stock it, we can special-order most parts.

Do you carry spa supplies?

Yes. Spa chemicals, filters, and test strips alongside the pool aisle, plus advice on keeping a hot tub clear between drains.

Can I get advice without buying anything?

Yes. Ask. A wrong answer costs you a lot more than a free one costs us.

Customer reviews

What customers say about Discount Pool Supply

Recent 4- and 5-star Google reviews

Ratings and review counts are the totals on each store's Google Business Profile, including every review. Cards show recent reviews of 4 stars and up from both stores.

Google★★★★★ See Google reviews

Jamal B. Google review · Escondido
★★★★★
Vince is a gem to say the least. This store is a bit out of my way, but I take the drive because of the amazing customer service Vince provides. He is so incredibly knowledgeable and helpful. He always listens to your question and gives you a genuine answer.
Patrick M. Google review · San Diego
★★★★★
Best shop in San Diego for pool supplies. Steve is super helpful and always takes the time to help me dial in my water chemistry. Great prices on everything. Highly recommended this spot for pool and spa supplies.
Mike Google review · San Dieguito Pool Center
★★★★★
After spending 2 months trying to fix my pump priming issue on my own, I gave up and called. Scheduling the appointment was easy, and the tech was on time. Gavin saw the issue and fixed it within 15 minutes. Plus, he had the needed parts in his truck. This guy knows his stuff.
▸ View our profile on Google Profile totals synced within 24 hours; updated Sep 24, 2026.

Bring in a sample this week.

Free water testing at both stores, Monday to Saturday: Clairemont Mesa Blvd in San Diego and W Felicita Ave in Escondido.

Get directions (858) 483-3100

Or text (760) 300-1476 for a quote. Replies in under 2 minutes.