St. Johns · Coronado Hills · Highland
Pool service in St. Johns
St. Johns, Coronado Hills and the Highland redevelopment are the north-east corner of Sullivan’s route. It is a small pocket of our route, a mix of older apartment decks and a scatter of homes, with newer pools arriving as Highland has redeveloped. Short drive times mean we are usually a few minutes away when something needs looking at.
- Coronado Hills
- Highland
The ground under St. Johns
A small, close pocket north of the river, flat enough that nothing here drains by gravity alone.
Blackland Prairie clay, east of the Balcones Escarpment. The survey maps Oakalla here.
The ground the series mapped across each ZIP
- 1.5
- 3.2
- 4.4
- 5.1
- 6.0
- 7.5
Source: USDA NRCS Soil Survey (SSURGO), Travis County TX453, via Soil Data Access.
The canopy street trees the city has inventoried
- Live oak
- Cedar elm
- Other oak
- Pecan
- Crape myrtle
- Juniper (cedar)
- Everything else
Source: City of Austin Tree Inventory (data.austintexas.gov).
What we see in St. Johns
A small, close pocket of the route — which mostly means we can get there quickly.
The ground under St. Johns
Deep expansive clay that swells and shrinks with the season. It moves coping, decking and buried plumbing, so a slow loss of water here is worth investigating rather than topping up.
The USDA soil survey maps Oakalla across 78752: no bedrock restriction recorded, shrink–swell 3.2. It is the color this ZIP carries on the map above.
Neighborhoods we cover here
Each of these has its own page — the ground, the lot sizes and the trees change street to street, and so does what your pool needs.
60 of the 98 permitted pools in St. Johns are commercial rather than residential. If you look after an apartment deck, an HOA amenity pool or hotel water here, see commercial pool service.
Services we run here
St. Johns — questions people ask
Do you service pools in St. Johns, Austin?
Yes. St. Johns is one of the areas Sullivan’s Pool Service covers, and our routes already run through it — St. Johns, Coronado Hills, Highland and the streets around them, on a weekly schedule. Because your pool sits on a fixed route with a technician assigned to it, we can usually come back the same week when something breaks.
What should I expect from a pool in St. Johns?
A small, close pocket of the route — which mostly means we can get there quickly. Age is the single best predictor of what any pool needs: under about ten years it is mostly chemistry and cleaning, and past fifteen the pump, heater, salt cell and plaster all start coming due one after another. Knowing which of those is closest is most of what a good weekly service gives you.
What ground is St. Johns built on, and why does it matter for a pool?
Blackland Prairie clay, east of the Balcones Escarpment. Deep expansive clay that swells and shrinks with the season. It moves coping, decking and buried plumbing, so a slow loss of water here is worth investigating rather than topping up.
Pool service in St. Johns?
We are in St. Johns most weeks. Tell us the pool and we will quote it.