Reptile · Colubrid
Northern water snake care guide
Nerodia sipedon
The northern water snake is a intermediate-level colubrid from E North America incl. S Ontario, S Quebec. Adults reach 60–130 cm and live 10–15 years in captivity. Often mistaken for a cottonmouth; buy captive-bred and keep land areas dry. Solitary.
- Enclosure 120 × 60 × 60 cm
- Temp Warm 28–30°C, cool 22°C
- Humidity 60–80%
How much does a northern water snake cost in Canada?
Northern water snake quick facts
- Skill level
- Intermediate
- Adult size
- 60–130 cm
- Lifespan
- 10–15 years
- Activity
- Diurnal
- Native range
- E North America incl. S Ontario, S Quebec
- Minimum enclosure
- 120 × 60 × 60 cm (47 × 24 × 24 in, ≈ 114 US gal)
- Housing
- Best kept alone.
- Temperature
- Warm 28–30°C, cool 22°C
- Humidity
- 60–80%
- UVB
- Recommended
- Diet
- Piscivore – fish, frogs, scented mice
- Bioactive style
- Semi-aquatic (paludarium)
Northern water snake enclosure & bioactive setup
Give one adult at least 120 × 60 × 60 cm (47 × 24 × 24 inches). Best kept alone. This species suits a semi-aquatic (paludarium) bioactive build.
- Leaf litter2 cm
- Jurassic ABG Terrarium Mix8 cm
- Drainage – clay bio balls4 cm
Quantities assume about half the floor is land. The water half needs a filter and regular partial water changes.
Temperature: Warm 28–30°C, cool 22°C. Humidity: 60–80%. UVB: Recommended.
What does a northern water snake eat?
Piscivore – fish, frogs, scented mice. Feed every 5–7 days; use thiaminase-free fish or scented mice.
Handling, temperament & health
Defensive and quick to bite; anticoagulant saliva makes bites bleed.
Health watch: Watch for blister disease and thiamine deficiency.
Cleaning & maintenance schedule
Daily
- Check water and air temperature; feed according to species.
Weekly
- Change 20–30% of the water with dechlorinated water.
- Rinse filter sponge in old tank water (never tap water) as needed.
Monthly
- Top up leaf litter on land; prune plants at the waterline.
Yearly
- Service the pump/filter fully.
Recommended for a northern water snake bioactive
Quantities are for one minimum-size enclosure (120 × 60 × 60 cm).
Clay Bio Balls
Drainage layer, 4 cm
Jurassic ABG Terrarium Mix
Bioactive soil layer, 8 cm
Almond Leaves Dried 15/Pack
Leaf litter – food and cover for the clean-up crew
Fresh Sphagnum Moss Container
Moss for humidity pockets and planting
Malaysian Drift Wood
Bridges water and land; easy exit from the water
Cork Bark Flats
Shelter on the land section
Northern water snake FAQ
Is the northern water snake good for beginners?
The northern water snake is best for keepers with some experience (intermediate). Defensive and quick to bite; anticoagulant saliva makes bites bleed.
What size enclosure does a northern water snake need?
At least 120 × 60 × 60 cm (about 47 × 24 × 24 inches, roughly 114 US gallons) for one adult. Best kept alone.
How much does a northern water snake cost in Canada?
Typically $60–150 CAD to buy, about $840–1550 CAD for a complete bioactive enclosure, and $200–350 CAD a year to keep.
What temperature and humidity does a northern water snake need?
Temperature: Warm 28–30°C, cool 22°C. Humidity: 60–80%.
What does a northern water snake eat?
Piscivore – fish, frogs, scented mice. Feed every 5–7 days; use thiaminase-free fish or scented mice.
Similar species
This care sheet is general guidance from One Bioactive, not veterinary advice. Needs vary with age, locality and individual animals – confirm with your breeder and an exotics vet. Prices are typical Canadian ranges in CAD and change over time.