San Jose, Santa Clara County, California
What a Plumber San Jose CA Households Call Needs to Establish in the First Five Minutes
Most big cities own their water. San Jose mostly does not. The city publishes that its own San Jose Municipal Water System is one of three drinking water suppliers inside the city limits, alongside the privately owned San Jose Water Company and Great Oaks Water Company, and that it has grown into the fourth largest water retailer in Santa Clara County. Fourth, in its own county.
The sewer is the exact opposite. Everybody is on one system, feeding one plant, and the charge for it does not arrive as a utility bill at all. It goes on the property tax roll and is collected by the Santa Clara County tax collector. So a San Jose address tells you almost nothing about who bills your water, and almost everything about how your sewer is paid for.
The Water Half
Three Retailers, and the City Publishes a Tool So You Can Find Yours
San Jose Municipal Water System is owned and operated by the City of San Jose, and its history is published with dates. The city purchased the Evergreen Water Company in May 1961 and created the system from it. North San Jose and Alviso were added in 1966. Council established the Edenvale service area in 1983 and Coyote in 1986. The Evergreen purchase was funded with loans from the city General Fund, which the city records as repaid with interest by 1970, since when the system has been completely self-supporting.
Today Muni Water supplies more than 100,000 people. The rest of the city buys water from two private companies. The practical consequence is that two neighbours on the same street can be on different retailers, with different rates, different account numbers and different people to call about a meter. The city itself publishes a look up your water retailer tool, which is the clearest possible admission that the address does not settle it.
Muni Water customer service sits at 200 E. Santa Clara Street, 1st Floor Tower, San Jose, California 95113, Monday to Friday 8:00 a.m. to 5:00 p.m., on 408-535-3500. If you are a Muni Water customer, that is where a service start or stop goes. If you are not, that number will not be able to help you with a bill, which is worth knowing before you spend twenty minutes on hold.
Five Rules, In Force All the Time
San Jose Gives You Five Working Days to Start Fixing a Leak
This is not a drought measure. The city states that its water use rules remain in effect at all times, and one of the five is a deadline that lands squarely on a plumbing job. If you have detected a leak, the clock has started.
- Be quick. Start fixing identified leaks within 5 working days. That is the rule that turns a detected leak into a scheduling problem rather than a someday problem.
- Be cool. Water before 10:00 a.m. and after 8:00 p.m. with sprinkler systems, and sprinklers cannot run more than 15 minutes per station per day. A hand-held hose with an automatic shut-off nozzle, or a bucket, may be used between 10 and 8.
- Be a sharp shooter. Cars can be washed at home, but only with a hose whose nozzle shuts off automatically when the handle is released.
- Be in control. Beyond minor splashing of surfaces, watering that causes water to flow into gutters and streets, or that makes large puddles, is not allowed.
- Be a sweeper. Use a broom rather than a hose on patios, sidewalks, driveways, parking lots and other hard surfaces. Hosing is allowed only with an automatic shut-off nozzle.
Two notes on that first rule. The city states the same requirement twice, once cleanly on the water use rules page and once in a garbled sentence on the drinking water landing page. The number and the timeframe are identical on both, so the clean statement is the one quoted above. And the rule bites hardest on the slow leak nobody wants to deal with, because five working days is not enough time to shop a job around properly if you start on day four.
Water waste, incidentally, is not reported to the city. It goes to the Santa Clara Valley Water District on (408) 630-2000, to WaterWise@valleywater.org, or through Access Valley Water. That is one more body in the chain that a San Jose address does not name.
The Sewer Half
What the Sanitary Sewer Actually Costs, and Where the Bill Turns Up
Residential sanitary sewer service and use charges are placed on the property tax roll and collected by the Santa Clara County tax collector office. The city publishes the figures in both forms, and notes that the monthly number exists only for prorating a partial year rather than as something you pay each month.
| Residence type | Per month | Per year |
|---|---|---|
| Single-family residence | $50.67 | $608.00 |
| Multiple-family residence, per unit | $33.95 | $407.36 |
| Mobile home, per unit | $38.25 | $459.04 |
The one-time sewer connection fee is a separate thing, charged when a property is connected rather than annually, and the city publishes that table in full too. Note the two thresholds in it. Residential bands turn at 9,780 square feet and non-residential bands turn at 9,720 square feet. Both figures are printed as the city prints them and neither is corrected here.
| Use | Parcel size | Fee |
|---|---|---|
| Residential, single family and duplex | Less than 9,780 sq ft | $447 per lot |
| Residential, single family and duplex | Greater than 9,780 sq ft | $1,991 per acre |
| Residential, multi-family | Less than 9,780 sq ft | $447 per lot plus $194 for each living unit over 2 per lot |
| Residential, multi-family | Greater than 9,780 sq ft | $1,991 per acre plus $194 for each living unit over 7 per acre |
| Non-residential | Less than 9,720 sq ft | $447 per lot plus $194 for each living unit equivalent over 2 per lot |
| Non-residential | Greater than 9,720 sq ft | $1,991 per acre for each of the first 10 acres, plus $861 for each acre over 10, plus $194 per living unit equivalent over 7 per acre |
| Schools | Any | $1,475 per acre or $333 per lot, whichever is greater |
| Connection over 25,000 gallons per day peak flow | Any | Consult staff for the calculation, additional fees apply |
Connection fee questions go to Public Works Development Services on (408) 535-3555. Nothing above is a quotation for plumbing work. It is the municipal charge that sits alongside it, and it is the part people most often forget to budget.
If You Run a Business Here, Read This Bit Twice
Your Commercial Sewer Charge Is Decided by Three Months of Winter Water
Commercial, institutional and light industrial classes cover non-residential users discharging sewage of uniform strength, or discharging less than 25,000 gallons per day. The charge is not metered sewage. It is derived from water consumption, on a published method.
- Three months of the previous fiscal year are averaged
The city averages water consumption for January, February and March of the previous fiscal year.
- That average is annualised
The three month average is annualised to estimate sewage flow for the following year.
- The winter choice is deliberate and the city says why
In its words, the winter months are selected to minimize the effects of landscaping and garden irrigation. Winter water is closer to true indoor discharge.
- The result is sorted into one of 63 classifications
The rate structure reflects the difference in sewage strength among 63 standard classifications of users. Two published examples show the spread: meat packers at $6.92 and wholesale bakeries at $8.89 per hundred cubic feet of sewage discharge.
- The annual charge goes on the property tax roll
The computed charge is placed on the property tax rolls for collection by the Santa Clara County tax collector, exactly as the residential charge is.
Here is the consequence nobody puts on a poster. A leak on a commercial meter in January, February or March does not just waste water for a few weeks. It inflates the three month average that sets the sewer charge for the whole of the next year, and that charge lands on a tax bill you cannot easily argue with later. On a commercial site in this city, a winter leak is the expensive kind.
One Plant Under Eight Cities
Where Everything Ends Up, and the Two Burbanks Problem
The San Jose-Santa Clara Regional Wastewater Facility at 700 Los Esteros Road is described by the city as one of the largest advanced wastewater treatment facilities in the western United States. It treats an average of 110 million gallons of wastewater a day against a capacity of up to 167 million gallons, and serves 1.5 million residents and over 17,000 businesses.
The membership list is worth reading if you work across the valley, because it explains why a sewer rule can change halfway down a road. The plant serves the cities of San Jose, Santa Clara and Milpitas; the Cupertino Sanitary District; the West Valley Sanitation District, covering Campbell, Los Gatos, Monte Sereno and Saratoga; and County Sanitation Districts 2-3 and the Burbank Sanitary District, both unincorporated.
That last name causes real confusion and it is worth heading off. The Burbank Sanitary District here is an unincorporated pocket of Santa Clara County next to San Jose. It has nothing to do with the City of Burbank in Los Angeles County, which is a separate municipality 350 miles away with its own water and power utility. If you have searched for Burbank plumbing rules and landed somewhere that talks about Los Angeles County, that is why.
Governance is shared. The facility is jointly owned by the cities of San Jose and Santa Clara, managed and operated by the City of San Jose Environmental Services Department, and overseen by both city councils plus a Treatment Plant Advisory Committee and a Technical Advisory Committee. It is being rebuilt through a capital improvement program the city puts at $1.4 billion over ten years.
Assemblies, Grease and Paperwork
The City Definition of Backflow Is Better Than Most, and It Names Both Causes
Muni Water defines backflow as the undesirable or unintended reversal of flow of water, liquids, gases or other substances from the customer onsite plumbing back into the public drinking water system, and then names the two conditions that cause it: a sudden decrease of pressure in the distribution system, such as from a water main break, or pressure inside the customer plumbing being made higher than the distribution system pressure. Those are two different failures with two different fixes, and a survey that only checks for one of them is only half a survey.
The published documents to work from are a Requirements for Testing and Maintenance of Backflow Prevention Assemblies, last updated January 2026, a list of approved backflow prevention assemblies, a Backflow Prevention Verification Form numbered 306 and last updated 2025, and a Reduced Pressure Principle Assembly Installation Detail also last updated 2025. Muni Water also ran a cross-connection survey asking customers to complete a five minute questionnaire by 30 June 2026, alongside a recorded webinar. That date has passed and no later notice was read, so nothing here says whether it is still open.
On the grease side, San Jose food service establishments upload grease control device maintenance records to SwiftComply, and the city states that records completed there are compliant with section 15.14.650 of the San Jose Municipal Code, that a FOG inspector can review compliance without inspecting the facility, and that uploading reduces a facility inspection priority. The FOG Control Program is a required element of the Sewer System Management Plan that the US EPA and the State of California require of collection system agencies.
What We Do Here
Plumbing Work Priced Against Whichever Half of the System It Sits On
Leak detection is the first service on this page for a reason. A five working day rule is only useful if the leak has actually been located, and on a commercial site in the first quarter of the year finding it early changes a whole year of sewer charge.
Sewer line repair and drain cleaning sit on the unified half of the system, the one that ends at a plant shared by eight cities and four districts. Hydro jetting answers a line whose walls have been narrowed by exactly what the grease control programme exists to keep out.
Repiping and burst pipe repair cover supply pipework that has failed, water heater repair covers tank and tankless work, fixture repair covers the visible end, commercial plumbing covers the food service and industrial sites where the 63 classifications matter, and emergency plumbing covers the first hour. We publish no response time for San Jose, because a number typed into a web page helps nobody standing in water.
Elsewhere in the Bay Area we cover Fremont and Hayward across the bay, and San Francisco to the north, each with its own utility arrangement that does not carry across a city line.
Where We Work
San Jose Neighbourhoods and Service Areas
These are the districts people give us when they book. Several of them, including Evergreen, Alviso, North San Jose, Edenvale and Coyote, are also the named service areas the Municipal Water System was assembled from between 1961 and 1986, which is why the water retailer question and the neighbourhood question so often have the same answer.
San Jose Plumbing Questions, Answered Straight
Three water retailers in one city, a sewer charge that arrives on your property tax, a five working day leak deadline, and a commercial bill set by three months of winter.
One of three companies, and the city says so plainly. San Jose Municipal Water System is owned and operated by the City of San Jose, and it is one of three drinking water suppliers in San Jose along with the privately owned San Jose Water Company and Great Oaks Water Company. The city publishes a look up your water retailer tool because the address does not tell you. Muni Water is the fourth largest water retailer in Santa Clara County, which is a surprising thing for a city utility to be in its own city.
Because it is not billed that way here. The city states that residential sanitary sewer service charges are placed on the property tax roll and collected by the Santa Clara County tax collector office. That is true for commercial and light industrial users too, whose annual charge is computed and then placed on the property tax rolls. It means your sewer cost is decoupled from whichever water company happens to serve your street.
The city publishes it for each residence type, and notes that the monthly figure exists only for prorating a partial year rather than as a monthly payment. A single-family residence is $50.67 per month or $608.00 per year. A multiple-family residence is $33.95 per unit per month or $407.36 per unit per year. A mobile home is $38.25 per unit per month or $459.04 per unit per year.
There is a published one-time fee table. A single family or duplex lot under 9,780 square feet is $447 per lot, and over that size it is $1,991 per acre. Multi-family adds $194 for each living unit over 2 per lot, or over 7 per acre. Non-residential uses the same base with a living unit equivalent calculation and a threshold printed as 9,720 square feet, plus $861 for each acre beyond the first ten. Schools are $1,475 per acre or $333 per lot, whichever is greater. Anything over 25,000 gallons per day of peak flow is quoted by staff on (408) 535-3555.
Yes. Among the San Jose water use rules for residents, which the city says remain in effect at all times rather than only during a drought, is a rule to start fixing identified leaks within 5 working days. It sits alongside sprinkler timing rules, a 15 minute per station per day limit, an automatic shut-off nozzle requirement for car washing, a ban on runoff into gutters and streets, and a requirement to sweep hard surfaces rather than hose them.
If you run a business here, because of how the sewer charge is computed. The city estimates annual water consumption for commercial, institutional and light industrial users by averaging consumption for January, February and March of the previous fiscal year and annualising it, deliberately choosing the winter months to minimize the effects of landscaping and garden irrigation. An inflated first quarter therefore sets an inflated sewer charge for the following year, and that charge arrives on the property tax roll.
They are the city way of reflecting that different businesses discharge sewage of different strength. The rate structure is based on adjusted water consumption data reflecting the difference in sewage strength among 63 standard classifications of users, each with its own charge per hundred cubic feet of sewage discharge. We can only quote the two visible in the published extract we read, meat packers at $6.92 and wholesale bakeries at $8.89, and we are not going to guess at the other 61.
To the San Jose-Santa Clara Regional Wastewater Facility at 700 Los Esteros Road, which the city describes as one of the largest advanced wastewater treatment facilities in the western United States. It treats an average of 110 million gallons a day against a capacity of up to 167 million gallons, serving 1.5 million residents and over 17,000 businesses across the cities of San Jose, Santa Clara and Milpitas, the Cupertino Sanitary District, the West Valley Sanitation District covering Campbell, Los Gatos, Monte Sereno and Saratoga, and County Sanitation Districts 2-3 and the Burbank Sanitary District.
No, and this catches people out. The Burbank Sanitary District that shares the San Jose treatment plant is an unincorporated area of Santa Clara County. The City of Burbank is a separate municipality in Los Angeles County, roughly 350 miles south, with its own water and power utility and its own rules. Nothing on this page applies there, and nothing published for that city applies here.
A Requirements for Testing and Maintenance of Backflow Prevention Assemblies document last updated January 2026, a list of approved backflow prevention assemblies, a Backflow Prevention Verification Form numbered 306 last updated 2025, and a Reduced Pressure Principle Assembly Installation Detail also last updated 2025. Muni Water also asked customers to complete a cross-connection survey by 30 June 2026 and recorded a webinar about it. That deadline has passed and we read no later notice, so we cannot say whether it is still open.
Yes, and the keyword data behind it was decomposed by hand rather than trusted from the audit, because the audit reported a suspiciously perfect state ratio. Reading the whole name instead of the state-stamped subset gives 210 rows carrying more than seventeen thousand searches, with exactly one rival row worth twenty searches, and that row is a trading name rather than a place. San Jose in Illinois and San Jose in New Mexico contribute nothing at all, and an international probe for San Jose, Costa Rica returns nothing. Everything described here is a City of San Jose, Santa Clara County or California arrangement.
Find Out Which Side It Is On First
Plumber San Jose CA Work Scoped Against the Right Utility
Before any pricing conversation here, two answers are worth having. Which of the three retailers supplies your water, because that decides who owns the meter and who to call about it. And whether the problem is on the water side or the sewer side, because in this city those are governed, funded and billed in completely different ways. Get those two right and the rest of the job is ordinary plumbing.
Sources for the three drinking water suppliers, the fourth largest retailer statement, the retailer lookup tool, the May 1961 Evergreen Water Company purchase, the 1966 North San Jose and Alviso additions, the 1983 Edenvale and 1986 Coyote service areas, the General Fund loans repaid by 1970, the more than 100,000 people served, and the customer service address, hours and phone number: the City of San Jose Environmental Services Drinking Water and About San Jose Municipal Water System pages.
The five water use rules including the five working day leak rule, the sprinkler hours and 15 minute per station limit, the nozzle requirements, the runoff prohibition and the sweeping rule are from the Water Use Rules for Residents page, and the water waste reporting route is to the Santa Clara Valley Water District as published there.
The residential sanitary sewer service and use charges, the property tax roll collection, the commercial rate method including the January to March averaging, the stated reason for choosing winter, the 63 classifications and the two published unit rates are from the Sanitary Sewer Service Charges page. The one-time sewer connection fee table and the (408) 535-3555 contact are from the Sewer Connection Fees page.
The treatment facility address and phone, its description as one of the largest advanced wastewater treatment facilities in the western United States, the 110 million gallon average and 167 million gallon capacity, the 1.5 million residents and over 17,000 businesses, the eight cities and four sanitation districts, the joint ownership and oversight arrangement and the $1.4 billion ten year capital improvement program are from the Regional Wastewater Facility page.
The backflow definition, its two named causes and the four published assembly documents with their update dates are from the Backflow Prevention and Cross-Connection Control page. The SwiftComply arrangement and the reference to section 15.14.650 of the San Jose Municipal Code are from the Food Service Establishments page.
No retail water rate is quoted on this page. The city characterises Muni Water rates as among the lowest in the San Francisco Bay Area but the rate document was not opened, and the rates charged by San Jose Water Company and Great Oaks Water Company are set by separate companies whose pages were not read for this page. No storm sewer service charge or storm drain connection fee is quoted, no lead service line count, no water main mileage, no population and no response time.
Contractor licensing in California is administered by the Contractors State License Board. Rates, fees, codes and programmes change, so confirm current figures with the City of San Jose Environmental Services Department before relying on anything above.