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HE THONG DAN NU'6'C PHE THAl - PHAl LAM GJ
SAU CQN BAG LUT
Ban co thi tim thly tai lieu vi he thdng
din nip6c phi thai (septic system) o5 dau?
Xin hay lien lac vdi ca quan y te dia phuong de
duoc hudng dan va giup da. De biet them ve he
thong dan nude phe thai, xin hay goi Trung Tarn
Phuc Vu Moi Sinh Quoc Gia tai so (800) 624-
8301 hay vao mang ludi cua ho d
www.nesc.wvu.edu.
Ban co nen born him chupa nu'6'c phi thai
(septic tank) khi canh ddng thoat nu'6'c
(drainfield hay absorption field) bj ngap
hay khong?
Khong nen! May lam thi viec bom ham chi la giai phap tarn thdi ma thoi, Khi tinh hinh cue ky nghiem
trong, neu bom ham, ban co the lam no troi len mat dat va lam hu hai cac ctuong ong dan vao hay thoat ra.
Bien phap hay nhat la day kin tat ca cac cong trong tang nha d duoi dat va giam toi da viec xu dung nuoc
trong nha.
Chu nhan cua cac co> sa> thipong mai nen lam gi niu he thdng din nip6c phi thai du'O'c dung
d§ chtpa nu>6c thai tu> co- so- cua ho?
Ngoai cong ranh, nhieu tieu thuong gia co the dung he thong dan nuoc phe thai de thai nuoc ban co Ian hoa
chat. Neu he thong dan nuoc phe thai cua ban thuoc loai nay va nuoc cua no tran vao tang nha o duoi dat
hay tran ra canh ctong thoat nuoc, ban phai rat than trong de tranh khoi ngui mui cua nuoc nay hay khoi dinh
vao da va mat. Hay lien lac chinh quyen tieu bang hay EPA de biet ro each thuc don dep.
Ban nen lam gi v6i he thdng din nip6c phi thai sau con bao lut?
Khi nuoc lut da nit di, chu nha can phai lam nhung viec sau day:
• Khong duoc uong nuoc gieng ma phai doi cho den khi nuoc da duoc thu nghiem. Hay lien lac voi so y
te dia phuong de hoi ve viec thu nghiem nuoc gieng.
• Khong nen tiep tuc thai nude ra ong cong ma phai doi cho den khi muc nuoc o trong canh dong thoat
nuoc thap hon muc nude chung quanh nha.
• Neu nghi ngo ham chua nuoc phe thai bi hu hai, phai goi ngudi chuyen mon den xem xet va sua chua,
Cac dau hieu hu hai gom co dat sup xuong hay ham khong the chua them nude duoc nua. Phan Ion bao
lut khong the lam hu hai duoc cac ham chua nude phe thai bdi vi chiing nam chim dudi mat dat. Tuy
nhien, cac ham chinh va ham thu hai co the ngap day bun va manh vun, do do, can phai cho ngudi chuyen
mon den don sach chung. Neu canh dong thoat nude bi nghen bun, ban co the phai dat mot he thong mdi.
• Chi co nhung ngudi tho chuyen nghiep mdi co the don sach hay sua chua cac ham chua nude phe thai
an toan bdi vi chung co the chua nhieu khi doc. Hay lien lac vdi co quan y te dia phuong de co danh sach
cua nhung nha thau chuyen ve ham chua nude phe thai trong vung ban.
• Neu nude cong da tran vao tang nha d dudi dat, don sach noi do va tay trang san nha that ky ludng
bang mot dung dich gom nua ly thuoc tay cho moi gallon nude.
Sau con bao lut, bom he thong dan nude phe thai cang sdm cang tot. Phai bom ca ham chua nude phe
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thai va tram hoc (lift station) de don sach tat ca bun va manh vun. Khong duoc bom ham khi lut loi hay
khi canh dong thoat nuoc dang bi ngap. May lam thi vice bom ham chi la giai phap tarn thdi ma thoi.
Khi tinh hinh cue ky nghiem trong, neu bom ham, ban co the lam no troi len mat dat va lam hu hai cac
duong ong dan vao hay thoat ra tu ham.
• Khong nen lai xe hay xu dung may de nen dat tren canh dong thoat nuoc. Dat bi uot rat de dinh chat
lai voi nhau, do do, co the lam giam bot kha nang thoat nuoc va se lam he thong dan nuoc phe thai hu hai
nhanh.
• Trade khi bat dien tro lai, phai kiem soat xem cac giay dien hay he thong dien co hu hai hay khong.
• Phai chac chan he thong dan nuoc phe thai co nap day kin va phong kiem soat khong bi choan hay hu.
• Kiem soat cay coi chung quanh ham chua nuoc phe thai va canh dong thoat nuoc. Sua ngay nhung noi
dat sup hay gieo hat co neu can thiet de co mot lop co day noi do.
Nen nhce: Khi nutfc ngam dang len cao hay he thong cong bi lut de doa, niro'c cong co the tran vao nha.
Cach duy nhat de ngan ngira chuyen nay la dung he thong dan niro'c phe thai it di de giam ap suat.
1. Chu nha can phai biet den cac de nghi cua nhung nguoi co nhieu kinh nghiem ve nhung trirong hop
khi he thong dan nuoc phe thai bi lut.
2. Dung nhung ly le thong thuong de quyet dinh viec minh lam. Neu co the, dung dung he thong dan
nuoc phe thai neu dat dam nuoc hay bi lut. Nuoc thai se khong duoc giai quyet va se tro thanh nguon
6 nhiem. Tranh dung nuoc that it trong khi he thong tro lai nhu cu va nuoc ngam nit xuong.
3. Tranh khong de bun tran vao he thong dan nuoc phe thai co buong bom nuoc boi vi neu buong bi lut,
bun se lang lai va lam nghen canh dong thoat nuoc.
4. Dung mo ham chua nuoc phe thai de bom nuoc ra khi dat van con ngap nuoc. Bun co the tran vao
ham va cuoi cung tich tu lai tren canh dong thoat nuoc. Hon the nua, bom ham trong khi dat chung
quanh ngap nuoc co the lam ham troi len mat dat. (Tuong tu, nhung he thong vua moi duoc chon
duoi dat co the troi len mat dat nhanh hon nhhung he thong cu boi vi dat chung quanh chua co du thoi
gian de nen chat lai.)
5. Dung dao ham chua nuoc phe thai hay dao canh dong thoat nuoc khi dat van con am uot hay bi lut.
Nen tranh khong dung nhung may moc nang ne o tren hay chung quanh canh dong thoat nuoc khi dat
van con am uot. Viec nay se lam giam kha nang thoat nuoc cua dat o noi do.
6. Neu ham bi ngap, cac chat beo va dau mo trong ham se noi len tren lam nghen ong thoat. Neu nuoc
tu he thong dan nuoc phe thai tran vao nha, nen kiem soat ham triroc nhat de xem ong thoat co bi
nghen hay khong. Don sach nuoc lut tran vao trong nha nhung tuyet doi khong do no vao trong bon
hay cau tieu ma de nuoc co du thoi gian nit di. Neu khong, muc nuoc trong he thong phe thai se dang
cao hon lam cac chat tich tu duoi day ham co the troi dat den canh dong thoat nuoc va lam tac nghen
noi do.
7. Phai biet nhung bo phan nao cua he thong dan nuoc phe thai dung den dien hay dan dien de khoi va
cham den chung neu chung ngap nuoc lut. Phai doi cho den khi chung hoan toan kho rao va da duoc
lau chui sach se roi moi dung lai.
8. Tat ca cac bo phan can phai co khong khi de thanh loc nuoc ban cua he thong dan nuoc phe thai va tat
ca cac do loc rat de bi nghen neu bun va can troi vao. Do do, chung can phai duoc lau chui sach se.
Van phong NITOC (4606M) www.epa.gov/safewater EPA 816-F-05-029 Thang chin 2005
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