Service pricing2026-10-03

How much does pond maintenance cost? Pricing a service contract

The published cost guides put a professional spring cleanout at about $850 to $1,000 for a mid-sized pond, monthly service at $170 to $450 a month, and winterization at $150 to $500 on top of a fall closing that starts around $850. Those are ranges collected from many jobs. Only one contractor we found publishes the arithmetic behind a full-season contract, so a homeowner checking a quote and a contractor setting one both need to rebuild the price from hours, crew rate, consumables and driving, using the pond's real gallons and surface area.

What the published ranges say

No manufacturer, extension service or trade body publishes a price for pond service. The figures below come from cost aggregators and from contractors' own pages. LawnStarter (updated July 30, 2026) and KoiPros print the same four size bands, so those rows are one set of numbers. Angi refuses automated fetches, so its figures come from a search snippet and are marked that way.

Published pond service prices. Size bands are pond surface area. Angi figures are from a search snippet, not the page itself.
Service	Published figure	Source
Spring cleanout	"$950" average	LawnStarter
Spring cleanout	"$850 to $1,000 for a mid-sized pond"	KoiPros
Fall closing	"$850" for midsized ponds; KoiPros: "starts at $850"	LawnStarter, KoiPros
Winterization	"about $350"; KoiPros: "adds $150 to $500" to the fall closing	LawnStarter, KoiPros
Single service visit	"$250 to $450"	KoiPros; Angi snippet gives the same range
Monthly plan	"$170 to $450 per month"	LawnStarter, KoiPros
Labor	"$140 to $225" per man-hour	LawnStarter; KoiPros says this is "in Southern California"
Annual, under 100 sq ft	$450 to $950	LawnStarter, KoiPros
Annual, 100 to 200 sq ft	$950 to $1,500	LawnStarter, KoiPros
Annual, 200 to 350 sq ft	$1,550 to $2,750	LawnStarter, KoiPros
Annual, over 350 sq ft	$2,750 to $5,000+	LawnStarter, KoiPros
Annual, by size (snippet)	up to 80 sq ft $300 to $800; 80 to 150 sq ft $700 to $1,500; 150 to 300 sq ft $900 to $2,500; over 300 sq ft $1,500 to $5,000	Angi

Two government numbers belong in any contractor's worksheet because they are the cost side of the price. The Bureau of Labor Statistics gives landscaping and groundskeeping workers a median wage of $18.82 an hour as of May 2025. The IRS business standard mileage rate for 2026 is 72.5 cents a mile through June 30 and 76 cents a mile from July 1.

What contractors publish and do

PondWorks is the one company that shows its contract math line by line. Its worked example adds a $500.00 spring opening, an $8.75 clarifier dose and $52.00 of fish food ($560.75), ten monthly visits at $100.00 each ($1,000.00), and a $500.00 fall winterization with another $8.75 clarifier dose and $75.00 to install existing netting ($583.75). The season totals $2,144.50. A 10 percent discount of $214.45 for enrolling before May 15 brings it to $1,930.05, billed as ten payments of $193.01. PondWorks says these are "typical examples" priced "relative to the size & characteristics of the water feature being serviced", but it does not publish how size changes the numbers.

The others price on different bases, which is where they disagree. Cool Ponds in Indianapolis charges "by the man hour for pond cleanings, which is $150 per hour" with "a minimum charge of $300.00", adds $75 for addresses 25 to 50 miles away, works "in teams of 2 people", and says an annual cleaning of a well-kept feature "will take an average of 2 - 5 hours" on ponds that mostly run "500 - 1500 gallons". Grass Roots Pond & Garden in New Boston, Michigan prices a visit by gallons: about 1,500 gallons at "$650+ per visit", about 2,500 gallons at "$850 per visit", and 10,000 gallons or more at "$1,800+ per visit", with fish-safe chemicals adding $100 to $200. New England Aquatic Landscaping in Cherry Valley, Massachusetts prices by surface area: a cleanout is $1,300 up to 90 square feet, $2,500 up to 180 square feet and $5,000 or more beyond that, and its Standard annual membership is $2,264, $2,437 and $2,767 for ponds up to 90, 180 and 340 square feet. Dirt Monkey says an 8 by 11 foot pond with a 10 foot stream "can be cleaned by a two-person crew in about 2 to 3 hours", and attributes to Aquascape the claim that contractors earn "up to $250 to $300 per hour" on maintenance.

In POND Trade Magazine (December 2017), Tom Grandy sets the billing rate from the business's own costs: overhead divided by billable hours, plus the direct labor wage, then divided by one minus the profit margin. His example is $48.78 of overhead plus $16.53 of labor, a $65.31 break-even, divided by 85 percent for $76.83 an hour. Alexander Castro, writing in the same magazine on adding maintenance to a build business, says "In the beginning, we only performed maintenance on Fridays."

Where the numbers part ways

The $140 to $225 man-hour rate travels as a national figure on LawnStarter, but KoiPros ties it to Southern California, and Grandy's method produced $76.83 in 2017. The $250 to $300 an hour attributed to Aquascape reaches us secondhand through a tool retailer's blog and could not be checked at the source. The gap between an $18.82 median wage and a $150 billed hour pays for payroll burden, the truck, insurance, dump fees, hours spent driving and quoting, and profit. Grandy's worksheet lets you find your own number instead of borrowing someone else's.

Flat size bands also make the price jump at each band edge. Under the LawnStarter bands, a pond of 199 square feet costs $950 to $1,500 a year and a pond of 201 square feet costs $1,550 to $2,750. Under New England Aquatic's tiers, a 181 square foot pond pays the same $2,767 as a 340 square foot pond, which is $15.29 a square foot for the first and $8.14 for the second. An Angi snippet says "some pond service companies may charge by the number of gallons", but "square footage is more often used". Both measures matter, for different tasks. Pumping down, refilling and dosing clarifier or bacteria go up with gallons, while scrubbing rock, netting and de-icer sizing go up with surface area.

A contractor worksheet, worked for 3,000 gallons

Take a freeform pond about 14 by 17 feet and 2 feet deep on average. The volume calculator's freeform factor of 0.85 gives 14 times 17 times 0.85, or 202.3 square feet of surface, and 202.3 times 2 feet times 7.48 gallons per cubic foot gives 3,026 gallons. (For the shapes that hold 3,000 gallons, see 3,000 gallon pond dimensions.) The hours below are example inputs for a contractor to replace with their own job logs; the rates and dollar figures are the published ones above.

Start with hours. Dirt Monkey's 8 by 11 benchmark is two people for 2 to 3 hours, or 4 to 6 man-hours for 88 square feet. This pond has 2.3 times that surface. If time scaled straight with area the cleanout would take 9 to 14 man-hours, but pump setup and the filter clean do not double with size, so take 9 man-hours as the example. At Cool Ponds' $150 an hour that is $1,350. Add $100 of consumables (the low end of Grass Roots' fish-safe chemical add-on) and one 40 mile round trip at the IRS rate of 76 cents, which is $30.40. The spring cleanout comes to $1,480.40.

For monthly visits, take one person for one hour on site at $150, plus $30.40 of driving, which is $180.40 a visit. Six visits from May through October come to $1,082.40. PondWorks schedules ten.

For the fall closing, take two people for 3 hours, which is 6 man-hours at $150, or $900, plus PondWorks' $75 netting charge and $30.40 of driving, for $1,005.40. A de-icer or aerator, if the client needs one, is equipment billed separately.

The example season for a 3,026 gallon, 202.3 square foot pond. Hours are example inputs; rates come from the sources above.
Line	Arithmetic	Amount
Spring cleanout	9 man-hours at $150, plus $100 consumables, plus $30.40 mileage	$1,480.40
Monthly visits	6 visits at $150 plus $30.40	$1,082.40
Fall closing	6 man-hours at $150, plus $75 netting, plus $30.40 mileage	$1,005.40
Season total	sum of the three lines	$3,568.20
Prepaid, 10% off	$3,568.20 less $356.82	$3,211.38
Eight monthly payments	$3,211.38 divided by 8	$401.42

The $401.42 payment sits inside the published $170 to $450 monthly range, and the $1,480.40 cleanout sits between the $950 aggregator average and New England Aquatic's $2,500 for a pond smaller than this one. Expressed as unit prices, the season is $3,568.20 divided by 3,026 gallons, about $1.18 a gallon a year, or $3,568.20 divided by 202.3 square feet, about $17.64 a square foot a year. Those unit prices let you quote the next pond without starting over, but they drift at the ends. A 1,000 gallon pond priced at $1.18 a gallon would bring about $1,180 a year, barely more than the six one-hour visits with driving ($1,082.40) and nothing toward the cleanout or closing. A minimum charge like Cool Ponds' $300 guards against that. At 20,000 gallons the published tiers run out (Grass Roots' "$1,800+" and New England's "$5,000+"), and the only honest basis left is the hours you have logged.

What to do

Measure the pond first. Get gallons and surface area before you quote or accept a quote.
If you are the contractor, set your hourly rate from your own overhead and billable hours using Grandy's method, then time three or four cleanouts and monthly visits by pond size before you publish tiers.
Price each season line separately, as PondWorks does, so the client can see what the discount buys.
If you use flat tiers, check where your typical pond falls. A pond just over a band edge pays for the next band's labor.
If you are the homeowner, ask the contractor for hours, crew size and consumables on each line, and compare the total to the ranges above for your surface area. Do not judge a quote against an annual band without knowing your pond's square footage.

Build costs follow the same logic; see what a backyard pond costs by size.

The PondTools calculators for this

The PondTools volume calculator (also standalone) takes length, width and average depth in feet and a shape setting (rectangular, circular or oval, or freeform) and returns gallons, the basis for pump-down time and dosing. The PondTools surface-area calculator (also standalone) takes the surface area in square feet, water temperature, the coldest night you plan for and the kind of fish, and returns aeration size, de-icer wattage and a stocking limit, which covers the fall equipment line. The PondTools app traces the client's pond from a satellite photo, so the gallons and square feet are known before the first visit and both calculators fill from the trace.