Key facts: Sewage Backups in Hartford
- Washington's Department of Health says not to use a septic system during a flood.
- Inform your local health department if a septic system or drainfield was impacted, state guidance says.
- Lake and river floodwater is considered black water.
- Do not drive equipment near or over a wet drainfield.
Sewer or septic
First find out which system you have
You would be surprised how many people are not sure. Look at your utility bills: a sewer charge usually means a sewer connection. Look at the property for a septic tank lid, a drainfield area or an old inspection report. The local health department may keep records for on-site systems, and the Lake Stevens Sewer District can tell you about sewer connections. It pays to know before anything goes wrong, as the first call and the first actions differ.
On sewer, a backup is usually a blockage in your side sewer or the public main. On septic, it can be the tank, the line to the tank or a drainfield that can no longer accept water. In a wet December near the outlet channel and Catherine Creek, ground saturation can be enough to stop a field working, even when nothing is broken. See the main sewage backup cleanup page for the indoor cleanup steps.
Telling them apart
Sewer backup or septic trouble
| Sign | On sewer | On septic |
|---|---|---|
| Several slow fixtures | Blockage in the line | Tank or field may be full |
| Odor outside | Possible broken line | Possible surfacing effluent |
| Soggy ground | Possibly a leak or just rain | Possibly drainfield failure |
| Backup during a flood | Line affected or water coming in | Stop using the system |
| First call | Plumber or sewer utility | Septic professional |
| Who to tell | Utility if the main is involved | Local health department if impacted by flood |
During a flood
If your septic system is under water
- 1
Stop using the system
State guidance names toilets, showers, sinks, washing machines and dishwashers.
- 2
Keep people away
Keep children and pets away from wet areas that may be contaminated.
- 3
Stay off the drainfield
Do not drive or dig on it while the soil is wet.
- 4
Wait for the water to recede
Check on the system only after the flood water has gone down.
- 5
Inform the health department
Tell them if the system or drainfield was impacted. [1]
- 6
Have the tank checked
Guidance says to check it after a flood, and to pump it out if necessary.
- 7
Resume use gradually
Ask the septic professional what is appropriate for your system.
Mixed water
When channel water and wastewater mix
Around the outlet channel, surface water, a flooded drainfield and a backed-up drain can all happen in the same storm. From a cleanup standpoint, this makes little difference, as lake and river floodwater is considered black water in Washington's guidance anyway. [3] Treat it all the same way: keep people out, wear protection, remove porous materials that were soaked, clean with detergent, disinfect hard surfaces, and only then dry the structure.
From an insurance standpoint, it can make a big difference. A typical home policy does not cover flooding, the state's Insurance Commissioner says, while a sewer backup often requires an endorsement. [6] Note where the water first appeared, what it looked and smelled like, and what the channel and yard were doing at the time. Take dated photos of each. You do not need to work out the insurer's answer yourself, but honest records of what happened will help you get one.
Materials
Crawlspaces, old floors and shops
Older buildings can make cleanup more complicated. Sewage in a crawlspace means soaked insulation and ground cover have to come out, and any wood has to be cleaned before it is dried. Old floor layers may trap contamination. Before cutting older materials, ask about testing for asbestos and lead. Shops and outbuildings connected to a septic system should be included in your check, since a floor drain or a utility sink can connect to the same system.
If your home is on a private well, flooding raises a separate question about drinking water. Do not assume that it is safe after floodwater or sewage has reached the well area, and ask your local health department about testing. Use another source of drinking water until you know.
On site
Bringing in equipment without doing harm
A sewage job usually involves vehicles, pumps and carrying materials out. On wet ground that can be a problem in itself. Mark your tank lid and your drainfield boundaries, and meet the crew when they arrive so that you can show them. Washington's guidance warns against driving equipment near or over a wet drainfield, and against heavy machinery around it while the soil is saturated. Trucks may need to park on the road, and long hoses may be needed.
Ask how contaminated water will be disposed of. It should not be pumped onto the ground near the channel or the creek. Before you sign, check the firm on the Washington L&I Verify tool. [7] It shows registration, citations and bond lawsuits. After big storms, unfamiliar firms may come through a flooded area, so it is worth the few minutes.
Prevention
Getting your system ready for wet months
- Pump and inspect on scheduleFollow your local health department's guidance for your type of system.
- Reduce water use in wet spellsDecreasing wastewater use is what state guidance suggests if heavy rain or flooding is possible.
- Keep runoff off the drainfieldDirect downspouts and yard water elsewhere.
- Do not plant or park on the fieldRoots and weight can both damage it.
- Know your recordsKeep a map of the tank and field along with your home's papers.
- Raise stored goodsKeep things off the floors of rooms likely to be affected.
FAQ
Sewage and septic questions around Hartford
How do I know if I am on sewer or septic?
Check your utility bill for a sewer charge, and look for a tank lid or inspection records. The local health department and the sewer district can help. It is worth settling this while everything is dry, not when something has backed up.
Can I do laundry if the ground is saturated?
On septic, cut back as far as you can in wet weather, and stop altogether if the system is flooded or fixtures are slow. Heavy loads send lots of water to a field that may be unable to take it.
Should I have my septic tank pumped during a flood?
State guidance places tank checks and any pumping after the flood water has receded. During a flood, it says not to use the system. Ask a septic professional when it is right to pump your system.
Is my well safe after a flood?
Do not assume so. Use bottled or another safe water source until you have advice, and ask your local health department about testing. Floodwater and sewage can both affect a well, depending on how it is built and where it is.
Who pays for septic repairs after a flood?
It depends on your policy and the cause, so ask your insurer. Home and flood policies treat these things differently. Keep your photos, your septic professional's written findings and any health department correspondence together.
Sources and citations
- [1]Floods and septic systems (Washington State Department of Health)
- [2]Sewage spills: cleaning them up (Washington State Department of Health)
- [3]Flood cleanup (Washington State Department of Health)
- [4]Some Lake Stevens homeowners now must buy flood insurance (Everett Herald, 2021)
- [5]Rainstorms push Lake Stevens to a near-record level (Everett Herald, 2015)
- [6]Flood insurance (Washington Office of the Insurance Commissioner)
- [7]Verify a contractor, tradesperson or business (Washington L&I)