The City of Redlands Municipal Utilities & Engineering Department supplies water to Redlands and Mentone, requires every backflow assembly to be tested yearly, and its One Stop Permit Center issues plumbing permits. Plumber Riverside CA only links callers with independent plumbers. Call the number on this page to be connected with a local plumber in Redlands.

Plumbing services in Redlands
East of San Bernardino, below the mountains
Redlands is in San Bernardino County, about 15 miles east-northeast of Riverside in a straight line. It had 73,168 residents in the 2020 Census.
City water from rivers and the Bunker Hill Basin
The Municipal Utilities & Engineering Department provides drinking water to Redlands and Mentone, parts of Crafton Hills and San Timoteo Canyon, and a small part of San Bernardino. According to the City's water quality report, supply comes from Santa Ana River and Mill Creek surface water and from Bunker Hill Basin groundwater, which covers about half of normal demand, with State Water Project water added at peak times. That report listed chlorine as the disinfectant.
The same report put groundwater hardness at an average of 152 mg/L (range 100 to 200) and treated surface water at 135 mg/L. Hard water leaves scale in tank heaters and on fixtures, so flushing a water heater and cleaning aerators pays off here. The City posts its latest report on its Water Quality page. Customer Service is (909) 798-7516.
The City reports no lead lines and no galvanized lines needing replacement in its distribution system, and it publishes inventory maps.
Backflow testing every year
Redlands' Cross-Connection Control Plan requires every backflow prevention assembly on an active water service to be field tested at least once a year at the owner's expense, and also after it is installed, repaired, replaced or relocated. Testers must hold a recognized certification and a City business license, file annual gauge calibration, and submit results through the City's BSI Online platform. If your irrigation system or business has an assembly, plan for that yearly test.
Sewer and older neighborhoods
Wastewater treatment is part of the same City department, but the sewer provider was not confirmed in the research for this page, so check your bill before reporting a public sewer problem. No housing-age figures were gathered for Redlands either. In long-established homes, a plumber may find older supply piping or drain lines worth inspecting when doing other work.
Permits
The Building & Safety Division's One Stop Permit Center, 35 Cajon Street, Suite 15A, 909-798-7536, issues plumbing, building, electrical, mechanical and demolition permits. A water heater permit can be started on the City's online portal, but it has to be paid for in person before it is issued, so allow for a trip to the counter.
Gas safety
SoCalGas serves Redlands. If you smell gas, leave right away, then call 911 and SoCalGas at 1-800-427-2200 from a safe spot outside.
Redlands vs. Riverside, and calling
Both cities pump Bunker Hill Basin groundwater, but Redlands adds river and creek surface water and runs its own backflow filing system. When you call the number on this page, describe the problem, and you will be connected with an independent plumber who serves Redlands. That plumber quotes the work and sets the visit with you.
Common questions in Redlands
How often must a backflow assembly be tested in Redlands?
Can I get a Redlands water heater permit online?
How hard is Redlands water?
Does Redlands supply water to Mentone?
Nearby cities and towns
Sources
- Wikipedia: San Bernardino County, California
- City of Redlands: Municipal Utilities & Engineering
- City of Redlands: 2022 Consumer Confidence Report (PDF)
- City of Redlands: Water quality
- City of Redlands: Cross-Connection Control Plan (PDF)
- City of Redlands: Building & Safety
- SoCalGas: Cities and communities served (PDF)
- SoCalGas: Emergency information
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