What does it cost to water a lawn in California?
A green lawn is one of the thirstiest — and most expensive — things in a California yard. Enter your lawn size and your water rate to see what it costs to water each year, what converting to low-water plants could save, and a possible one-time turf rebate. Every number is a planning estimate you can check against your own bill.
Typical CA outdoor rate is ~$4–$17/1,000 gal (Sacramento is cheaper, coastal pricier). Summer watering hits the higher tiers — for an accurate number, enter the $/1,000 gal from your latest bill ($/HCF × 1.34).
$176–$280saved / year
Possible one-time rebate: up to ~$2,000 if your provider offers one · NorCal ~$1–2/sq ft
- Planning estimate — real use depends on your climate, soil, sprinklers, and habits.
- Turf assumes a cool-season lawn (~0.8 crop coefficient) on Sacramento/inland ET at ~60–70% sprinkler efficiency; low-water plantings on drip use roughly a quarter to half as much.
- Water price is a mid/upper-tier default — summer irrigation is billed at higher tiers. Enter the $/1,000 gal (or $/HCF × 1.34) from your latest bill for an accurate number.
- Rebate is a possibility, not a promise: funding is limited and first-come, you generally must get pre-approval before removing any grass, per-household and area caps apply, artificial turf is usually excluded, and not all providers participate. Check your water provider.
- Rates and rebate programs change frequently. Verify with your provider — this is an estimate to plan with, not a quote.
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Ready to act on the savings? Plan the new yard in the Lawn-Conversion Planner, size the drip in the Sprinkler Calculator, or see the bigger picture on the Resilient California Yard hub.
How the estimate works
Turf water use is evapotranspiration-based: California's hot, dry summers drive a cool-season lawn to roughly 30–60 gallons per square foot per year (about 40 inland), and winter rain barely offsets it. Low-water and native plantings on drip use only about a quarter to half as much. The dollar figures apply your water rate to those gallons — and because summer irrigation is billed at the higher tiers of most increasing-block rate schedules, the default rate is a mid/upper-tier one, not the cheapest. It's a low-fi estimate: enter the exact rate from your bill for a number tuned to you.
About turf-replacement rebates
Many California water providers pay a one-time rebate — commonly around $1–$2 per square foot in the Sacramento area and about $2–$5 in Southern California — to replace living lawn with low-water plants. They are genuinely worth pursuing, but they come with real conditions: funding is limited and first-come, you almost always need pre-approval before removing any grass, there are per-household and area caps, artificial turf is excluded, and not every agency participates. This tool estimates a possible amount so you can plan; your provider's current program is the source of truth. See local rebate details by city.
Lawn watering cost & rebates — FAQs
How much does it cost to water a lawn in California?
A cool-season lawn in California uses roughly 30–60 gallons per square foot per year (about 40 is typical inland), because summer evapotranspiration is high and winter rain doesn't offset it. At a mid-to-upper-tier water rate of roughly $4–$17 per 1,000 gallons — summer irrigation lands in the higher tiers — a 1,000 sq ft lawn commonly runs somewhere from about $150 to $500+ a year just in water. Rates vary enormously by provider (Sacramento is cheap; coastal and Bay Area upper tiers are expensive), so enter the rate from your own bill for a real number.
How much can I save by replacing my lawn with low-water plants?
Established low-water and native plantings on drip typically use only about a quarter to half as much water as turf — the state and water agencies cite 50–70% outdoor-water reductions after a turf conversion. In dollars that's often a few hundred dollars a year for a typical yard, more where water is expensive. The calculator shows both the gallons and the dollar range so the estimate stands on its own even if you tweak the rate.
Is there a rebate for replacing my lawn?
Often, if your water provider participates. Northern California agencies (through the Regional Water Authority's 'Cash for Grass' programs) commonly pay around $1–$2 per square foot; Southern California via Metropolitan Water District's SoCal Water$mart pays about $2 and up, with local adders reaching $3–$5 (LADWP tops out at $5/sq ft). The catch: funding is limited and first-come, you generally must get pre-approval before removing any grass, per-household and area caps apply, artificial turf is excluded, and not every provider offers it. Treat a rebate as a possible bonus and confirm your provider's current program before you start.
Do these numbers include sewer charges?
No — and they usually shouldn't. Most California agencies set the sewer charge from winter-average water use (when there's little irrigation) or meter irrigation separately, so summer lawn watering typically adds water cost but not sewer cost. The estimate is water-only, which matches how irrigation savings actually show up on your bill.
How accurate is this estimate?
It's a low-fi planning estimate, presented as ranges on purpose. Actual use depends on your climate zone, soil, sprinkler efficiency, and watering habits, and water rates and rebate programs change often. The turf figure is ET-derived (Sacramento reference ET0 with a cool-season crop coefficient at typical sprinkler efficiency); the rebate is shown as a possibility, never a promise. For the most accurate cost, enter the $/1,000 gallons from your latest bill and confirm any rebate with your provider.