Which Sacramento Water District Serves You?

How do you find your Sacramento water district?

The fastest way is your water bill: the supplier's name is printed on it. Renters, new owners and anyone whose water is billed through a landlord or HOA can use Sacramento County's Find My Water Company search instead, which takes an address or parcel number and returns the service district.

The county page lists more than 30 entries, from the City of Sacramento and Sacramento Suburban Water District to small systems such as Tokay Park Water Company and the Natomas Central mutual water company. A few addresses fall in overlap areas, so read the result rather than assuming from a city name. A Rancho Cordova address, for example, may be served by Golden State Water or by the Sacramento County Water Agency.

Your sewer bill does not answer the question. Sewer service in much of the county runs through SacSewer, a different agency from whoever delivers your drinking water.

Which districts take river water and which pump wells?

Most suppliers east of the City run on Folsom Lake or American River water, while several north and south of the City lean on wells. The split is the single biggest reason two houses a few miles apart get different water.

River and lake water dominates in Folsom, Roseville, El Dorado Hills, Orange Vale and the San Juan Water District area, and it makes up about 80% of City of Sacramento water. Wells dominate in Rio Linda/Elverta (100% wells), Cal Am's Arden, Parkway and Fruitridge systems, and much of Sacramento Suburban Water District. Carmichael, Citrus Heights, Fair Oaks and the Sacramento County Water Agency blend the two.

How does Sacramento Suburban Water District differ?

Sacramento Suburban Water District differs because its tap water changes through the year: its hard-water page says customers "may receive only surface water, groundwater, or a blend of both." The district's 2025 report splits it into a North Service Area, topped up with San Juan's Folsom Lake water, and a South Service Area, topped up with City of Sacramento river water.

The gap between those sources is wide. District wells averaged 120 mg/L hardness in the north (range 82–240) and 130 mg/L in the south (51–280), while the bought water ran 17 mg/L in the north and 34–63 mg/L in the south. A house can therefore read soft in a wet winter and hard in August. Since June 30, 2025, the former Del Paso Manor Water District has been an SSWD service area with its own report.

SSWD serves 194,444 people across both areas, per the EPA's system record. Its 2025 report lists hexavalent chromium in the north at an average of 3.9 µg/L with a single maximum of 10, and no violation, plus low parts-per-trillion PFAS detections in some wells. It inventoried 46,571 service lines and found no lead.

What do Carmichael, San Juan and Citrus Heights share?

They share the American River system: San Juan Water District treats Folsom Lake water, and Carmichael Water District draws from the American River downstream, so all three start the year with soft surface water. San Juan's treated water tested at 17 mg/L hardness in the 2025 joint report it publishes with Citrus Heights WD, Fair Oaks WD and Orange Vale Water Company.

What differs is the well share. Orange Vale takes 100% San Juan water; Citrus Heights blends in about 6% from wells averaging 137.5 mg/L; Fair Oaks blends in about 12.3% from wells averaging 84.5 mg/L. The joint report prints only source values, so a home's hardness falls between the two numbers depending on the blend.

Carmichael's 2025 report gives its surface water 25 mg/L and its wells 53–210 mg/L (2023 samples), and says the four primary wells run May through September. Citrus Heights WD had one 2025 monitoring violation: its first hexavalent chromium test was late, and the results were "well below" the limit.

Who supplies Elk Grove, Rancho Cordova and Rio Linda?

Each of these areas is split or served by a supplier with its own report. In Elk Grove, part of the city is served by Elk Grove Water District, which publishes its own report; check it, because Levee Line could not open it. The Laguna and Vineyard areas are served by the Sacramento County Water Agency's Central/South system, about 65% Sacramento River water and 35% wells, per its 2025 report.

Rancho Cordova and Gold River are mostly Golden State Water's Cordova system, which blends wells with treated surface water; its 2025 report gives an average hardness of 75 mg/L (range 25–270). Mather, Sunrise and Anatolia are SCWA's North Service Area, about 99% surface water at roughly 52 mg/L.

Rio Linda and Elverta are served by the Rio Linda/Elverta Community Water District from 12 wells. Its 2026 report on 2025 water gives hardness averaging 99 mg/L and hexavalent chromium averaging 10.6 µg/L, above California's 10 µg/L limit; the report says a system its size is "not in violation until October 2027" and treatment is in design.

Why does your water district matter at the tap?

Your district sets the numbers that matter for appliances and filters: hardness, disinfectant level, and which trace metals show up. On the USGS hardness scale, El Dorado Hills water at 13 mg/L is soft, while Cal Am's Fruitridge system at 172 mg/L average is hard.

That difference decides whether a softener is worth discussing; the hardness by district page lines up every supplier. It also changes which page of a water quality report to read first, and whether chromium 6 or PFAS rows deserve a look.

Districts also differ on lead service line records. The City of Sacramento, SSWD and the San Juan agencies report no lead lines, while Rio Linda/Elverta still listed 3,373 of 4,690 lines as unknown material on its 2024 spreadsheet. The service line inventory page explains how to check yours.

Downstream questions

Further down the channel

• Supply: Where Sacramento tap water comes from
• Supply: How to read a Sacramento water quality report
• Hardness: Sacramento water hardness by district
• Folder: Sacramento water supply overview