Town of Southampton
Pool Opening & Closing in Water Mill, NY
A pool opening or closing in Water Mill starts at about $425 with a Hamptons service company (2026 Long Island price; national ranges $250–500 to open, $175–500 to close). Open once daytime air holds above 70°F, before algae starts, and close after several nights below 50°F, usually mid-to-late October. We put Water Mill pool owners in touch with one licensed, insured pool company that works the town and will schedule the opening around the first weekend the house is used.
Last updated · Reviewed by Georgica Pool Co.
A pool opening or closing in Water Mill is a two-hour job that decides a whole season. We put Water Mill pool owners in touch with one licensed, insured pool company that works the town every spring and fall, and we publish the 2026 Long Island prices so the quote reads plainly.
Opening & closing in Water Mill: what's different here
Estates around Mecox Bay and Flying Point on wet, flat ground, older farmhouses along Montauk Highway and Halsey Lane, and wooded 1990s–2010s neighborhoods north of the highway toward Deerfield Road whose first-generation gunite and vinyl pools are reaching resurfacing and liner age.
Water Mill runs from open, salt-exposed ground near the water to wooded inland lots, and the jobs differ: cover and equipment protection near the water, leaf load and early algae under the trees. Either way the timing rule is the same, open above 70°F air and close below 50°F nights, and a company that works both sides of Water Mill knows which weekend that tends to be.
Water Mill filled in from the 1990s through the 2010s, so a large stock of pools is at the age where plaster (about 10 years) and Long Island liners (8–10 years) come due at once, along with pumps past 10 years and salt cells past 5. Water Mill is in the Town of Southampton: pool equipment at least 10 feet from property lines (8 feet in R-10 districts) with screening, a drywell for backwash, and permits through the Town Building Division rather than a village board.
Permits in Water Mill run through the Town of Southampton Building Division; the pool specialist we put you in touch with handles the filing where one is required.
How it works
Tell us about the job once. One licensed, insured pool specialist who works Water Mill and handles opening & closing regularly contacts you within 1 business day. Free for homeowners, no spam calls.
FAQ
Opening & closing questions
How much does pool opening cost in the Hamptons?
About $425 and up. One Hamptons service company that works East Hampton, Southampton, Water Mill, Bridgehampton and Sagaponack publishes openings and closings "starting at $425" for 2026, which buys cover removal, deck equipment reinstalled, filtration start-up, an interior clean, the fill, start-up chemicals and an equipment check. National ranges run $250–500 for an in-ground opening, with gunite pools at the top ($300–500) because there is more surface to clean and a DE filter reinstall ($300–450) costing more than a cartridge or sand one ($250–350). Closings nationally are $175–500 depending on the source. A large gunite pool with a spa, automation and a salt system will run above the starting price; a DIY opening is $50–150 in chemicals and supplies plus a Saturday.
Read the full answer →When should I open my pool in the Hamptons?
Earlier than the calendar says: when daytime air is consistently above 70°F, or overnight lows are holding at 60–65°F, and not later. The water will be far too cold to swim, and that is the point: algae is active, not dormant, at 70°F, and a pool that sits under a cover into May with warming water and no circulation opens green. On Long Island most residential pools open between mid-March and early May depending on the year. Closing works in reverse: watch for nighttime lows consistently below 50°F for several nights, which on Long Island usually arrives mid-to-late October (national sources disagree on the threshold, quoting 65°F, 60°F or 50°F water). Open-to-close is a five-to-seven-month season; the serviced part of it is usually about 20 weeks.
Read the full answer →How does Georgica Pool Co. work, and what does it cost me?
It costs homeowners nothing. You tell us about the pool once, roughly sixty seconds: where it is, what kind it is if you know, what it needs, and when. We put you in touch with one licensed, insured pool company that works your town and does that kind of work, service company or builder as the job requires, and they call you within one business day to look at it and quote it directly. We are a Hamptons-only referral service, not a pool company, and we are named for the pond, not connected to any business or property that shares the name: one company, and nobody else gets your number. Participating companies pay us a referral fee.
Services
More in Water Mill
Weekly Pool Service in Water Mill
Weekly maintenance for a pool whose owner is elsewhere Monday to Friday: what a real visit includes, 2026 Long Island prices per visit and per season, and what to ask before you sign for the summer.
Pool Equipment & Leak Repair in Water Mill
Pumps, filters, salt cells, heaters and the leak you can only see on the water bill: 2026 repair costs, the repair-or-replace rule, and why a variable-speed pump pays for itself at Long Island electric rates.
Pool Heater Installation & Replacement in Water Mill
Gas heaters that warm a pool by Friday, heat pumps that cost a third as much to run, and the salt-air detail that decides how long either lasts: 2026 costs, running costs, and sizing for a 20×40 pool.
Pool Renovation & Resurfacing in Water Mill
Resurfacing a tired gunite pool, replacing a liner, new coping and tile, a salt conversion or an automatic cover: 2026 costs (Long Island where they exist), finish lifespans, and the order the work happens in.
New Pool Construction in Water Mill
Building a pool on the South Fork in 2026: Long Island costs for gunite, vinyl and fiberglass, the 12–16 week build, the 4–6 month booking horizon, and the setback, barrier and water-table rules that shape the plan.
Book a pool specialist in Water Mill
Sixty seconds. One licensed, insured pool specialist who works your town calls you within one business day. Free for homeowners; nobody else gets your number.
We use what you send us only to put you in touch with the right pool specialist. Never sold, never used for marketing. Privacy policy.