Empire's sewer runs through old, undersized pipe that was close to its limit two decades ago. A six-week City of Modesto study in 2003 measured the collection system at 90% of capacity, averaging 168,761 gallons a day, with the main line to Modesto at a level that could cause sanitary sewer overflows. LAFCO adds that several district lines are undersized and over 30 years old. Since December 2015 the City has owned and maintained the whole system. Sewage that surfaces through a floor drain or toilet makes every room it reaches Category 3.
Empire's storm drainage has been planned in stages since 2013, and its trunk line to the river has no completion date. In 2013 the County described curbs, gutters and a collection system for the whole community, crossing under SR 132 to an MID outfall on the Tuolumne, with the first of four phases complete. A 2014 filing described sidewalks and bio-retention swales that hold runoff and let it percolate into the soil instead. The County's 2024-2028 capital plan lists the trunk line with its completion marked TBD.
About four in ten Empire homes predate 1970, and roughly as many went up in the 1970s. The Census Bureau's 2019-2023 survey counts 506 homes built before 1970, 109 of them before 1940, and 496 from the 1970s, for a median year of 1972, with none recorded from 2010 on. Galvanized pipe of the older group corrodes through in pinholes behind drywall, and cast-iron waste lines separate where they join. With 495 households renting, a slow drip under a rental's sink can sit unreported until it is Category 2.
Mobile homes and aging street mains add leak points of their own. The same survey counts 163 mobile homes among Empire's 1,198 units, and in a mobile home water from a failed line collects under the floor, out of sight. Empire's water comes from the City of Modesto, which filed in June 2026 to replace mains and appurtenances between 3rd Street, Sunshine Court, E Street and I Street for service reliability and fire flow. Inside a home, moisture readings show whether the house plumbing or something else put the water there.
Empire's commercial buildings line Yosemite Boulevard and Santa Fe Avenue, beside a state highway. SR 132 carries 14,900 vehicles a day at Santa Fe Drive and E Street. At 4275 Yosemite Boulevard, a 3,720 sq ft retail building backing onto an 18-foot alley was the subject of a 2023 County consultation proposing a repaved 19-stall lot with a valley gutter to capture storm water. Runoff that reaches a shop wall wets the slab edge and the drywall above it, and the EPA 24 to 48 hour mold window starts then, with mold remediation in Empire the step after drying.
The 2020 Census counted 4,202 people in 1,345 housing units across Empire's 1.168 square miles, against 4,189 people in 2010. With no homes recorded as built since 2010, restoration here happens in buildings that already stand, most of them decades old.
Empire is 6 road miles from the Modesto base, reached along Yosemite Boulevard, State Route 132, past Claus Road. The same crew returns on each day of the dry-out, and one file carries every reading through to sign-off.
Yosemite Boulevard runs from Modesto past Claus Road into Empire's commercial strip, with McClure Road, Santa Fe Drive and I Street meeting it in town. If water is still running, it is shut off first; a sewer problem in the street goes to the City of Modesto, which maintains Empire's lines. Propertyvendr confirms the arrival time.
Loss classified under IICRC S500. In Empire the questions are whether a backup came from the near-capacity sewer, which makes it Category 3, and whether swale or yard water reached a slab or crawl space. Moisture mapping and thermal imaging answer both on the first visit.
Truck-mounted or portable units take up the standing water, and rooms holding contaminated water are closed with poly under negative air before demolition begins.
Drywall, pad and insulation past saving come out, each load photographed and manifested to a permitted Stanislaus County facility.
Equipment is set by room volume and drying class. With 995 of Empire's 1,198 homes detached houses and 163 mobile homes, most set-ups cover one dwelling; a mobile home's underfloor space is its own area, and a shop's slab is Class 4.
Each day moisture is read against dry reference material in the same building and entered in the log.
Drying stops at the S500 goal. Photos, moisture maps, daily readings and manifests go to the owner or adjuster in a form ready to send on.
Empire's areas differ by which utility project touches them, how close they sit to the highway and where their rain goes.
The County concentrates Empire's commercial uses here, and the post office stands at 5102 Yosemite Blvd. LAFCO expects the Empire Fire Station to be relocated once SR 132 is upgraded and widened.
A 3,720 sq ft retail building at 4275 Yosemite Boulevard, on City of Modesto water and sewer, backs onto an 18-foot alley. A 2023 County consultation proposed a valley gutter to catch its lot's storm water.
Empire's second commercial street. The County's storm drain filing uses Santa Fe Road and Highway 132 as its cross streets and lists the BNSF and Modesto & Empire Traction railways.
Between 3rd Street, Sunshine Court, E Street and I Street, the City of Modesto filed in June 2026 to replace water mains for reliability and fire flow. A failed line inside a house is recorded apart from the street work.
Five Abbie Street parcels with vacant land are to be rezoned at 25 units an acre, about 55 homes. A 2025 County addendum proposes moving 14 Empire parcels to Medium High-Density Residential.
The Empire Library is at 98 I St., and the County lists a new library of about 5,000 sq ft in Empire among its completed projects. SR 132 carries 10,100 vehicles a day at I Street.
The CHSS Empire Camp emergency shelter at 6132 South Ave. has 73 beds. A water loss in a shelter is scoped around the people staying there.
The 2003 capacity study monitored the district's sewer pipe at this corner and found the main line to Modesto at 90% of flow capacity. A backup through a floor drain is Category 3 from the start.
The County's Empire rezone maps label MID Lateral No. 1 and an aqueduct running near the Abbie Street sites. When water reaches a building beside the canal, its entry path is photographed and mapped for the claim.
Empire Union School District is at 116 N. McClure Rd. A Caltrans notice of September 2021 planned curb ramps, sidewalks and pedestrian signals on SR 132 with McClure Road as the cross street.
The whole sanitary district lies inside the City of Modesto's Sphere of Influence, with Claus Road beside it; SR 132 there carries 13,300 and 14,600 vehicles a day. LAFCO records that the City has no plans to annex the area.
The original Empire City stood on the south bank, across the river from today's town, and emptied as the riverboat trade declined. The planned storm system was to cross under SR 132 to an MID outfall on the Tuolumne.
Empire's 2014 storm drain filing described bio-retention swales that store runoff and treat it through natural soil percolation instead of discharging it. The soils mapped around town are sandy loams and loamy sand on 0 to 3 percent slopes. Whether swale water has reached a particular slab or crawl space is a measurement: the first visit reads moisture at the slab edge, walls and framing, and photographs where the water came from.
LAFCO says land use responsibility within the sanitary district rests with Stanislaus County and the City of Modesto, and that the City has no plans in the foreseeable future to annex the area. The County lists Empire as unincorporated, and its Building Permits Division at 1010 10th Street, Suite 3400, Modesto, issues permits for rebuilding and alterations. The owner or the contractor assigned to the request obtains the permit. In a Special Flood Hazard Area a Flood Development Permit usually goes in with it.
The County's 2024-2028 capital plan carries the trunk line as project 230020 with its completion marked TBD, and Public Works filed its exemption notice in October 2024. The 2013 description had the first of four phases complete, and the 2014 plan relied on swales that hold water and let it soak in. Which system serves a given street is a question for County Public Works; inside the building, the crew records how water got in and how high it rose.
The City of Modesto, which supplies Empire's water, filed the project in June 2026 to strengthen and replace mains between 3rd Street, Sunshine Court, E Street and I Street for service reliability and fire flow. If water appears inside the house, the moisture map and photos show where it started, which separates a failure in the home's own plumbing from anything happening in the street.
Since December 2015 the City of Modesto has owned and maintained the Empire Sanitary District's sewers, and a new connection needs the City's prior written consent, such as a will-serve letter. The 2003 study put the main line at 90% of flow capacity. Putting back what the water damaged is ordinary reconstruction under a County permit; anything that needs a new sewer connection starts with the City.
Both, and the water is shut off at the valve before either arrives. The plumber repairs the pipe; the crew extracts standing water and starts drying inside the EPA's 24 to 48 hour window. If the trouble is a sewer main in the street, that belongs to the City of Modesto, which has maintained Empire's sewers since 2015. The moisture map from the first visit shows how far the water travelled.
