Kvar pumpe bunara i hitni slučajevi kontaminacije privatnog bunara¶

Više od 43 miliona ljudi u Sjedinjenim Državama, preko 4 miliona u Kanadi i stotine miliona vlasnika ruralnih kuća širom svijeta zavise od privatnog stambenog bunara podzemne vode za piće, kuhanje, kupanje i sanitarije. Za razliku od korisnika komunalnih vodovoda čiji pritisak i prečišćavanje vode održavaju gradski prečistači, privatni vlasnici bunara vode svoje minijaturno vodovodno preduzeće. Kada sistem bunara iznenada izgubi sav pritisak vode, brzo se uključuje i gasi, pumpa mutnu ili smrdljivu vodu nakon poplave, ili pretrpi udar groma ili smrzavanje, vaše domaćinstvo je odmah isključeno iz tekuće vode ili je izloženo patogenima i poljoprivrednim hemikalijama koje se prenose vodom.

Otprilike polovina svih iznenadnih hitnih slučajeva "nema vode" na privatnom bunaru nije uzrokovana mrtvom pumpom duboko pod zemljom, već jeftinom, pristupačnom komponentom u vašem podrumu, prostoru za puzanje ili bunarištu: isključenim dvopolnim prekidačem od 240 volti, izgorjelim ili mravinim kontaktima unutar prekidača pritiska, neispravnim startnim prekidačem pumpe, neispravnim pokretanjem kontrolne kutije pumpe. mjehur unutar tlačnog rezervoara. Razumijevanje kako bezbedno dijagnosticirati električne i hidraulične komponente iznad zemlje, zaštititi potopljeni motor sa kratkim ciklusom od pregaranja i izvršiti potpunu dezinfekciju šok-hloriranjem nakon što poplavne vode potopite vaš izvor bušotine može vam uštedjeti hiljade dolara i zaštititi svoju porodicu od teške bolesti.

Uradi ovo sada¶

1. Odmah isključite prekidač pumpe bunara ako pumpa radi bez prestanka ili se brzo uključuje i isključuje. Dođite do rezervoara pod pritiskom i pažljivo slušajte. Ako čujete klik prekidača pritiska svakih nekoliko sekundi (kratki ciklus) ili čujete da pumpa radi neprekidno bez povećanja pritiska na manometru, odmah isključite prekidač dvopolne pumpe za bunar ISKLJUČENO na glavnom električnom panelu. Ostavljanje pumpe da kratko radi ili da radi na suvo u bušotini sa niskim prinosom ili iza slomljene podzemne cijevi rastopit će impelere pumpe i izgorjeti potopljeni motor od 2.500 dolara za nekoliko minuta.
2. Odmah pređite na sigurnu flaširanu ili prokuhanu vodu ako poplavna voda dođe do vašeg izvora ili voda iz slavine postane zamućena, mutna ili ima miris. Ako je riječna ili površinska poplavna voda došla na 15 metara (50 stopa) od vašeg bunara, ili ako vaša voda iz slavine iznenada promijeni boju, zamućenje, okus ili miris nakon bliske kiše kvar septičkog sistema, odmah prestanite da pijete vodu. Pratite naše Vodič za sigurnost vode i obavještenja o ključanju dovođenjem čiste vode iz slavine do ključanja pune 1 minute (ili 3 minute iznad 2.000 metara / 6.500 stopa nadmorske visine) za mikrobe ili koristite isključivo flaširanu vodu ako sumnjate na kontaminaciju loživog ulja, pesticida ili nitrata (kuhanje koncentrata nitrata i kemikalija umjesto da ih uklanjate).
3. Isključite napajanje ili dovod goriva za vaš električni ili plinski bojler ako vaše cijevi izgube pritisak vode. Ako vaša kuća potpuno izgubi pritisak vode i voda otiče unazad niz dovod, gornji električni grijaći element unutar električnog bojlera može postati izložen zraku i izgorjeti poput suhe niti tostera za nekoliko sekundi (suvo pečenje). Isključite 240-voltni prekidač s oznakom "Grijač vode" (ili okrenite kontrolni kotačić plinskog bojlera na postavku "Pilot" ili "Odmor") sve dok se tlak vode u bunari potpuno ne vrati i zrak se ne ispusti iz slavina tople vode.
4. Pročitajte manometar na vašem rezervoaru za pritisak pre nego što dodirnete bilo koji prekidač. Pogledajte manometar sa okruglim biranjem koji je postavljen pored prekidača pritiska na dnu vašeg rezervoara za pritisak. U standardnom stambenom sistemu postavljenom na 30/50 psi (2,⅓,4 bar) ili 40/60 psi (2,8/4,1 bar), očitavanje merača 0 psi vam govori da se pumpa ne uključuje ili da je pukla cijev između pumpe i rezervoara, dok se mjerač merača zaglavio na 0 psi dok vam se voda ne zaglavi na 0 psi unutrašnje slavine upućuju na začepljen filter sedimenta u cijeloj kući, smrznutu dovodnu cijev ili zaglavljeni premosni ventil omekšivača vode nizvodno od rezervoara.
5. Pregledajte dvopolni prekidač, GFCI i polugu za isključivanje niske količine vode. Provjerite svoj glavni električni prekidač da vidite da li se dvopolni prekidač pumpe bunara aktivirao u središnji položaj; ako se aktivira, okrenite ga u potpunosti ISKLJUČENO i ponovo UKLJUČENO jednom (ako se odmah ponovo uključi, ostavite ga isključenog jer postoji kratki kratki spoj u motoru ili podzemnim žicama). Zatim, pogledajte bočnu stranu vašeg tlačnog prekidača na čep rezervoara: ako ima malu metalnu polugu koja viri sa strane (prekidač niskog pritiska), iznenadni pad pritiska ispod 20 psi (1,4 bara) tokom teške upotrebe baštenskog creva će automatski isključiti prekidač; držite tu malu metalnu polugu prema gore pod uglom od 45 stepeni dok se pritisak u rezervoaru ne popne preko 20 psi i pumpa ne nastavi da radi sama.
6. Sačuvajte vodu za hitne slučajeve unutar vašeg tlačnog rezervoara i bojlera. Čak i nakon što pumpa za bunar prestane da radi, funkcionalni rezervoar pod pritiskom i dalje drži 15 do 45 litara (4 do 12 galona) čiste vode pod pritiskom, a standardni stambeni bojler za toplu vodu drži 150 do 300 litara (40 do 80 litara) bezbedne vode za vodu. odvodni ventil nakon isključivanja prekidača bojlera i otvaranja gornje vruće slavine kako bi se prekinuo vakuum.

Dijagram toka hitne dijagnostike sistema bunara¶

Koristite ovaj detaljni mehanički i električni dijagram toka kako biste izolirali tačan uzrok iznenadnog nestanka privatnog bunara ili kvara tlaka prije nego pozovete bušača ili tehničara pumpe.

flowchart TD
    Start["Hitan slučaj privatnog bunara:<br/>Nema vode, niskog pritiska, brzog klikanja ili loše vode"] --> SymptomType{"Koji je primarni simptom?"}

    SymptomType -->|"Nema vode na slavinama<br/>Mjerač pokazuje 0 psi"| PowerCheck{"Provjerite 240V razbijanje bunara<br/>i polugu za isključivanje niskog pritiska"}
    SymptomType -->|"Zero or trickle water at taps<br/>Gauge reads normal 40 to 60 psi"| DownstreamBlock["Blokada nizvodno od rezervoara:<br/>Provjerite začepljen uložak filtera sedimenta,<br/>zamrznutu cijev ili zaglavljeni ventil omekšivača vode"]
    SymptomType -->|"Pumpa klikće UKLJUČENO/ISKLJUČENO<br/>svakih 2 do 10 sekundi"| ShortCycle["Rezervoar pod pritiskom:<br/>Odmah isključite prekidač<br/>Testirajte Schrader ventil na vrhu rezervoara za vodu"]
    SymptomType -->|"Poplavna voda je dospjela do izvora bunara<br/>ili je voda mutna/smrdljiva"| FloodContam["Kontaminirani bunar:<br/>Odmah pređite na flaširanu vodu<br/>Šok-hlorirajte i laboratorijski test prije pijenja"]

    PowerCheck -->|"Prekidač se aktivira trenutno<br/>kada se resetuje"| DeadShort["Kratki spoj potopljenog motora ili žice:<br/>Ostavite prekidač ISKLJUČEN<br/>Pozovite licenciranog stručnjaka za pumpe za bunar"]
    PowerCheck -->|"Prekidač drži ON,<br/>i dalje 0 psi"| SwitchInspect["ISKLJUČITE prekidač, skinite poklopac prekidača pritiska:<br/>Provjerite ima li izgorjelih izbočenih kontakata, mrava/ušnica,<br/>ili začepljene cijevi za bradavice od 1/4 inča ispod prekidača"]

    SwitchInspect -->|"Kontakti čisti i zatvoreni,<br/>240V na žicama za opterećenje"| ControlBoxCheck{"Da li sistem ima<br/>upravljačku kutiju montiranu na zid<br/>(3-žičnu pumpu)?"}
    ControlBoxCheck -->|"Da, 3-žični sistem"| CapacitorRelay["Testirajte ili zamijenite startni kondenzator<br/>i startni relej unutar kontrolne kutije"]
    ControlBoxCheck -->|"Ne (2-žična pumpa) ili<br/>Kontrolna kutija je dobra"| UndergroundFault["Kvar pumpe, nepovratnog ventila ili spuštene cijevi:<br/>Polomljena cijev u bunaru, suvi vodonosnik,<br/>ili zaplijenjena potopljena pumpa"]

Anatomija stambenog privatnog bunara¶

Da biste precizno riješili problem u slučaju nužde u bušotini, prvo morate znati koji tip pumpnog sistema opslužuje vašu imovinu i kako voda putuje od vodonosnog sloja do vaših slavina.

1. Potopni sistemi pumpi za bunare (duboki bunari: 8 do 150+ metara / 25 do 500+ stopa)¶

Većina modernih bušenih bunara sa čeličnim ili PVC kućištem od 10 do 15 centimetara (4 do 6 inča) koristi cilindričnu potopljenu pumpu od nehrđajućeg čelika okačenu blizu dna bušotine na polietilensku ili čeličnu cijev s navojem, koja je trajno potopljena ispod nivoa vode:

• Kako pokreće vodu: Potopna pumpa gura vodu nagore umjesto da je usisava. Mesingani nepovratni ventil na vrhu pumpe sprečava da voda iz vertikalne ispustne cevi otiče unazad u bunar kada se pumpa zaustavi.
• Adapter bez jama: Otprilike 1,2 do 2,4 metra (4 do 8 stopa) ispod vrha bušotine (sigurno ispod lokalne zimske linije mraza), mesingani spojni spoj nazvan adapter bez jama pretvara protok vode za 90 stepeni horizontalno kroz bočnu stranu kućišta bunara i usmjerava ga u vaš bazni prostor za bušotinu ili cijev za suhu bušotinu. tako da se ne može smrznuti.
• 2-žične u odnosu na 3-žične potopljene pumpe: Ignorirajući golu zelenu žicu uzemljenja, 2-žična pumpa ima svoj startni prekidač ugrađen direktno unutar potopljenog motora dolje na dnu bunara (tako da nema kontrolne kutije na zidu vašeg podruma). 3-žična pumpa postavlja početni kondenzator i startni relej unutar metalne kontrolne kutije pumpe montirane na zidu neposredno pored vašeg unutrašnjeg rezervoara pod pritiskom, što olakšava električne popravke bez izvlačenja pumpe iz zemlje.

2. mlazne pumpe za plitke i konvertibilne duboke bunare (nadzemne pumpe)¶

Older homes, cabins, and properties with high water tables often have an electric motor and cast-iron pump bolted directly to the floor of the basement, crawl space, or outdoor pump house:

• Shallow-well jet pump (Depth to water less than 7.5 meters / 25 feet): Uses a single suction pipe running from the pump housing into the well. Because atmospheric pressure at sea level can only lift a column of water about 7.6 meters (25 feet) by suction, a shallow-well jet pump relies on an internal venturi nozzle and impeller that must remain completely filled with water (primed) to create suction. If a brass foot valve at the bottom of the well pipe leaks even slightly, the water drains out of the suction pipe overnight, the pump fills with air (loses its prime), and the motor spins uselessly without pumping a drop.
• Deep-well (two-pipe) jet pump (Depth to water 7.5 to 35 meters / 25 to 110 feet): Uses two parallel pipes running between the above-ground pump and the well. One smaller pipe pushes high-pressure driving water down into a submerged jet assembly in the well, which forces a larger volume of well water up the second suction pipe.

3. The pressure tank, bladder, and pressure switch (The heart and brain above ground)¶

Because water is physically incompressible, turning on a faucet if your plumbing were connected straight to the well pump would force the heavy pump motor to slam on and off every time you rinsed a toothbrush. Instead, the pump fills a steel or fiberglass pressure tank:

• Pre-charged bladder or diaphragm tank: Inside modern tanks, a heavy-duty butyl rubber bladder or diaphragm separates the tank into two halves: compressed air at the top (inflated through a bicycle-style Schrader air valve on top of the tank) and well water at the bottom. As the pump forces water into the tank, the air cushion compresses until the pressure reaches the cut-out setting (typically 50 psi / 3.4 bar or 60 psi / 4.1 bar), at which point the pressure switch snaps open and turns the pump off.
• Drawdown cycle: When you open a kitchen faucet or flush a toilet, the compressed air cushion pushes 20 to 60 liters (5 to 15 gallons) of stored water out to your fixtures without the well pump even turning on. Only when the tank pressure drops down to the cut-in setting (30 psi / 2.1 bar or 40 psi / 2.8 bar) does the pressure switch snap closed to restart the pump.

Diagnosing and fixing the 6 most common well pump failures¶

Use the comparison matrix below to match what you see, hear, and read on the pressure gauge to the exact mechanical or electrical fault, followed by step-by-step safe troubleshooting instructions.

Step-by-step fix 1: Inspecting and cleaning a fouled pressure switch¶

The small grey square box (typically a Square D Pumptrol switch) mounted on a 6-millimeter (¼-inch) brass or galvanized pipe nipple at the bottom of your pressure tank controls all electrical power to your well pump. It fails in three common ways that any cautious homeowner can check:

1. Shut off the 240-volt double-pole breaker at your main electrical panel and verify with a non-contact voltage tester or multimeter that the power is completely dead.
2. Unscrew the single brass nut on top of the grey plastic cover and lift the cover off to expose the four screw terminals and two spring-loaded contact bridges.
3. Check for "fire ants, earwigs, and carbon pitting": Warm electrical fields and vibrations attract ants, earwigs, and small spiders that crawl right between the open copper contact points. When the switch snaps shut, the crushed insect bodies act as an electrical insulator, blocking the 240-volt current from reaching your pump. Even without insects, years of electrical arcing leave black carbon soot or melted metal pits on the four contact pads.
4. Clean the contacts safely: With the breaker OFF, slide a clean business card, a crisp dollar bill, or a strip of fine 400-grit emery paper between the closed contact points and pull it back and forth several times to remove dead insects or black carbon oxidation (never use coarse metal files that strip the protective silver alloy plating).
5. Check the plugged pipe nipple: If the contacts are clean and closed when the tank is at 0 psi, sometimes rust and mineral sludge completely plug the narrow 6-millimeter (¼-inch) vertical pipe nipple underneath the pressure switch, blinding the switch diaphragm so it cannot sense when water pressure drops or rises. A plumber or homeowner can drain the tank, unscrew the switch, and clear or replace that short brass pipe nipple.

Step-by-step fix 2: Testing and temporarily rescuing a waterlogged pressure tank¶

When your well pump kicks on and off every 3 seconds (short-cycling) the moment someone turns on a bathroom sink, your pressure tank has lost its compressible air cushion (waterlogged). Because water cannot be compressed, drawing a single cup of water drops the system pressure from 50 psi to 30 psi instantly, starting the pump, which then slams the pressure back to 50 psi in 2 seconds and shuts off. Submersible pump motors rely on 60 to 120 seconds of off-time between cycles to let cooling water dissipate startup heat from the motor windings; short-cycling will destroy the pump motor within hours or days.

1. The "Knock and Shake" test: Push gently against the side of your pressure tank or tap down its side from top to bottom. A healthy pressure tank feels hollow and light in the top two-thirds and heavy only at the bottom. A waterlogged tank feels solid, heavy as lead, and filled with water all the way to the very top dome.
2. The Schrader air valve test: Unscrew the little black plastic cap on top of the pressure tank (it looks identical to the tire valve stem on a car wheel) and depress the center brass pin for half a second with the back of a pen or a fingernail:
3. If water spurts or sprays out of the air valve: The internal butyl rubber bladder has torn or ruptured completely. The tank must be replaced.
4. If air hisses out (or nothing comes out, no water): The rubber bladder may still be intact, or slowly leaking air over years, and simply needs its air pre-charge restored.
5. How to properly check and re-inflate the tank air pre-charge (The 2-PSI Rule):
6. You can NEVER measure or add air to a pressure tank while there is water pressure inside the system (doing so only reads the water pressure).
7. Step A: Turn OFF the well pump circuit breaker.
8. Step B: Open a nearby faucet or the boiler drain valve at the base of the tank and let all water drain out until the water stops flowing and the pressure gauge reads 0 psi.
9. Step C: Place a digital tire pressure gauge on the top Schrader air valve. The empty-tank air pre-charge must be set exactly 2 psi (0.14 bar) BELOW the pressure switch cut-in setting:
   • For a 30/50 psi pressure switch, inflate the empty tank to 28 psi (1.93 bar).
   • For a 40/60 psi pressure switch, inflate the empty tank to 38 psi (2.62 bar).
10. Step D: Use a bicycle pump or portable tire inflator to bring the empty tank up to 28 psi (or 38 psi), close the drain valve, and flip the well pump breaker back ON.
11. Emergency temporary air injection if the bladder is ruptured and you must wait days for a plumber: If water spurted from the top valve confirming a torn bladder, you can buy 24 to 48 hours of safe pump operation by turning off the breaker, opening the bottom tank drain valve, hooking a tire inflator to the top Schrader valve, and pumping a temporary pocket of compressed air into the top third of the tank while pushing half the water out the drain. Close the drain valve at 28 psi and turn the breaker back on. That trapped air pocket will absorb pump cycles for a day or two before gradually dissolving into the water.

Step-by-step fix 3: Replacing a blown starting capacitor in a 3-wire control box¶

If your basement has a metal Franklin Electric, Goulds, or Pentair pump control box mounted on the wall beside the pressure tank, and your well suddenly stops working after a summer thunderstorm, power surge, or brownout, listen to the box when the pressure switch calls for water. If you hear a momentary 2-second electrical hum followed by a loud metallic click (the internal thermal overload breaker tripping), wait 60 seconds and open the control box safely:

1. Switch the 240-volt well pump breaker OFF at the main electrical panel.
2. Loosen the bottom screw on the pump control box and swing the front lid down and off its top hinge. On most modern Franklin Quick-Disconnect (QD) boxes, pulling the lid off automatically disconnects all components inside the lid from the live wall wires.
3. Sigurno ispraznite crni cilindrični startni kondenzator: Čak i kada je prekidač isključen, crni cijevni kondenzator unutar poklopca može pohraniti 250+ volti DC. Držite odvijač za njegovu samo izolovanu plastičnu ili gumenu ručku i premostite metalnu oštricu preko dva mesingana lopatica na vrhu crnog cilindra kondenzatora na 3 sekunde da biste ispraznili preostalu električnu energiju.
4. Look for physical capacitor failure: If the top of the black cylinder is bulged upward like a swollen soda can, if the small round rubber blow-out plug on top has popped open, or if sticky electrolyte oil has leaked out, the $15 starting capacitor has failed. You can either swap the entire plug-in control box lid (sold at hardware and farm supply stores matched by horsepower rating, such as ½ HP, ¾ HP, or 1 HP) or slide the two spade connectors onto a matching replacement MFD/voltage motor-start capacitor.

What to do when your well runs low or dry during a drought¶

During extended summer droughts or after filling a swimming pool or running lawn sprinklers continuously, the local groundwater table can drop down to the intake screen of your submersible pump (drawdown cone).

• Warning signs of a dropping water table: Faucets sputter violently with blasts of air, cold tap water looks cloudy gray or brown with fine silt, gritty sand settles in the bottom of toilet tanks and clogs faucet aerators, or water flows normally for 10 minutes in the morning and then cuts out completely.
• How to calculate and manage well recovery:
• Immediately turn off the well pump breaker for 3 to 6 hours to allow groundwater from surrounding rock fractures to percolate back into the well bore column (static water recovery).
• When you turn the breaker back on, let the pressure tank fill completely (which takes only 1 to 2 minutes) and then restrict household water use to small bursts separated by 2-hour rest periods.
• Install an automated electronic pump protection / dry-run monitor (such as a PumpSaver or Cycle Sensor) inside your control box. These devices monitor electrical current draw in real time; the instant the well water drops to the pump intake and the impeller spins in air (underload), the sensor cuts power automatically for a programmable recovery timer (such as 60 to 120 minutes) so the pump never burns up dry.

Private well contamination emergencies: floods, septic leaks, and chemicals¶

Because private wells are not regulated or monitored by municipal water utilities under the US Safe Drinking Water Act or equivalent national utility rules, nobody tests your well water unless you do. When floodwaters cover your yard, when a heavy spring rain washes livestock manure or septic effluent toward a cracked well seal, or when an underground heating oil tank leaks, your tap water can become acutely toxic overnight.

Identifying well water contaminants and which treatment works¶

Different groundwater contaminants require completely different emergency responses. Crucially, boiling water ONLY kills living biological organisms (bacteria, viruses, and parasites); boiling water that contains nitrates, arsenic, lead, or fuel chemicals actually boils off pure steam and CONCENTRATES the poison in the remaining water.

Step-by-step protocol: how to shock-chlorinate a contaminated well¶

If floodwaters submerged your wellhead, if you opened the well casing to replace a pump or pressure switch, or if a laboratory test returned positive for Total Coliform or E. coli bacteria, you must disinfect the entire well bore, casing, pressure tank, and household plumbing lines using shock chlorination (bringing the entire water column to a concentration of approximately 200 parts per million [ppm] free chlorine for 12 to 24 hours).

Step 1: Calculate the volume of unscented bleach required¶

To reach 200 ppm of chlorine in a standard residential drilled well with a 10- to 15-centimeter (4- to 6-inch) casing, use this reference table based on the depth of water standing in your well (total well depth minus static water depth; if unknown, calculate using the total depth of the well plus an extra 500 milliliters / 2 cups for the house plumbing):

Step 2: Pour and recirculate the chlorine down the well casing¶

1. Store clean drinking and flushing water for 24 hours before starting, because no one in the house can drink, shower, wash clothes, or flush high-chlorine water into a septic tank in large volumes during the process.
2. Switch OFF the well pump circuit breaker at the main electrical panel before removing the metal or plastic wellhead cap so you cannot be shocked by chafed pump wires inside the casing.
3. Unbolt and lift off the top sanitary well cap (or unscrew the threaded breather vent plug on top of the well seal).
4. Pre-dilute the bleach in clean 19-liter (5-gallon) plastic buckets of water (roughly 1 part bleach to 4 parts water) while wearing eye protection and rubber gloves, and pour the diluted chlorine solution slowly down the inside walls of the well casing.
5. Wash down the dry upper casing and mix the water column (Recirculation): Connect a clean garden hose to an outdoor spigot closest to the pressure tank, place the other end of the hose down into the open top of the well casing, turn the well pump breaker back ON, and open the hose bibb.
6. Let the garden hose circulate water out of the well and straight back down the inside walls of the casing for 30 to 60 minutes until you smell a strong, unmistakable chlorine odor coming out of the garden hose (or verify a purple reading on a 200-ppm high-range chlorine test strip). This step washes bacteria off the upper dry casing walls and mixes the chlorine all the way to the bottom of the well. Turn off the outdoor hose.

Step 3: Draw chlorinated water into every indoor faucet and pipe¶

1. Walk inside the house and, one by one, open every cold and hot water fixture: kitchen sink, bathroom sinks, bathtubs, showers, washing machine supply hoses, outdoor frost-free hydrants, and flush every toilet once.
2. Run each tap just until you smell a strong chlorine bleach odor coming out of that specific faucet (or test with a chlorine paper strip), then shut that faucet off immediately.
3. Do not forget to drain 20 to 40 liters (5 to 10 gallons) out of the bottom of your hot water heater and let it refill with chlorinated water so bacteria in the warm tank are sterilized.

Step 4: Hold for 12 to 24 hours of contact time¶

Leave the chlorinated water sitting undisturbed inside the well casing, pressure tank, and all household pipes for at least 12 hours, and ideally 24 hours overnight. Do not use any water during this contact window. Inspect the rubber gasket on your well cap and reinstall the cap securely on the wellhead.

Step 5: Flush the well outdoors (Never into your septic tank) and re-test¶

1. Never drain 200-ppm shock-chlorinated well water down indoor sinks or toilets into a private septic system. Flooding your septic tank with hundreds of liters of super-chlorinated water will kill the beneficial anaerobic bacteria inside your septic tank and dump huge hydraulic volumes that ruin your drainfield.
2. Instead, run a long garden hose from an outdoor faucet out to a gravel driveway, ditch, or flat lawn area located at least 15 to 30 meters (50 to 100 feet) away from any creek, pond, fish stream, septic drainfield, or prized garden plants (high chlorine is lethal to fish and frogs).
3. Turn on the outdoor hose at a moderate flow rate (watch your pressure gauge to make sure you do not pump the well dry; cycle the hose 30 minutes on, 30 minutes off if your well has a low recovery rate) until the strong chlorine smell disappears outdoors.
4. Finally, open your indoor faucets for 5 to 10 minutes each to clear the small amount of chlorinated water remaining inside the house pipes, reinstall clean sediment and carbon filters, take your water softener off bypass, and continue boiling drinking water until a certified water laboratory tests a sample taken 7 to 14 days later and confirms zero Coliform and zero E. coli bacteria.

Protecting your well from winter freezing and wildfire damage¶

• Preventing winter wellhouse and pressure switch freeze-ups: Even if your submersible pump sits 60 meters underground, an uninsulated wellhouse or cold crawl space will freeze the narrow 6-millimeter (¼-inch) pipe nipple under your pressure switch solid at 0 degrees Celsius (32 degrees Fahrenheit). Because the frozen ice plug traps a 50-psi pressure reading inside the switch diaphragm, the switch never knows your house is out of water, or conversely locks the pump ON until the PVC pipe bursts. Always insulate pressure tank piping, keep a thermostatically controlled utility heater or heat tape on exposed wellhouse pipes, and never use an open-flame propane torch to thaw PVC or polyethylene well pipes.
• After a wildfire passes over your property: Intense radiant heat from a grass or forest fire frequently melts above-ground PVC well vents, burns pump control wiring, and causes negative pressure in water lines that sucks toxic benzene, toluene, and styrene vapors from melted plastic pipes into your groundwater system. After a wildfire, do not drink or shower in well water even if the water looks clear; have a certified laboratory perform a Volatile Organic Compound (VOC) scan for benzene alongside a bacterial test before resuming use.

Često postavljana pitanja¶

Izvori provjereni¶

• United States Environmental Protection Agency (US EPA): Private Drinking Water Wells, What to Do With Your Private Well After a Flood, and Emergency Disinfection of Drinking Water protocols.
• Centers for Disease Control and Prevention (CDC, United States): Well Testing, Disinfecting Wells After an Emergency (Shock Chlorination), and Nitrate / Methemoglobinemia Prevention in Private Wells.
• National Ground Water Association (NGWA, United States / International): Well Owner's Guide (WellOwner.org) covering submersible vs. jet pump diagnostics, pressure tank drawdown maintenance, drought management, and wildfire benzene contamination alerts.
• Health Canada (Canada): Be Well Aware: Information for Private Well Owners and Guidance on Waterborne Bacterial Pathogens and Nitrate/Nitrite in Residential Well Supplies.
• Drinking Water Inspectorate (DWI, United Kingdom) and UK Health Security Agency (UKHSA): Private Water Supplies: Technical Guidance on Risk Assessment, Borehole Headworks Protection, and Disinfection.
• Penn State Extension and University of Minnesota Extension (United States): Shock Chlorination of Wells and Springs and hydraulic pressure tank / pressure switch troubleshooting bulletins.

Povezani vodiči¶

• Obavještenja o sigurnosti vode i ključanju
• Septic system failure and backup
• Nestanak struje
• Poplave