NSF-61 certified — safe for potable water SDR 11 · 200 PSI 50-year design life ★ 4.36 (13 reviews) Ships in 3–5 business days

Which size do I need? Match diameter to flow and run length — most farm water lines use 1" or 1-1/4". Not sure? See the sizing reference or ask us for a quick recommendation before you order.

Diameter	Per foot	Best for
3/4"	$0.58/ft	Single trough, short branch runs (~6–9 GPM)
1" — most popular	$0.88/ft	Long runs, a few water points (~12–16 GPM)
1-1/4"	$1.09/ft	Mains feeding multiple paddocks (~20–28 GPM)
1-1/2"	$1.32/ft	High-flow mains (~30–40 GPM)
2"	$2.08/ft	Main supply lines, high demand (~55–75 GPM)

Approximate flow at typical farm pressures — see the technical reference for exact friction-loss figures.

Shipping & freight: Ships to all 48 contiguous states; freight is shown in your cart before you pay — no surprise charges. Want the cost before you commit? Enter your ZIP at checkout or request a freight quote first. Transit is typically 3–5 business days.

Polyethylene HDPE Water Pipe – SDR 11, 200 PSI | Built to last underground

When you're laying water line across a pasture, you need pipe that handles pressure, resists the elements, and keeps flowing for decades. This HDPE water pipe (SDR 11, 200 PSI) is built for underground water-line installations on farms, ranches, and rural properties — and it's NSF-61 certified, so it's safe for potable livestock and household water.

HDPE is naturally resistant to corrosion, chemicals, and UV degradation — the go-to choice for buried water lines that perform year after year without maintenance. The 500-foot coil covers large pastures or multiple water points in one order, with fewer joints and fewer potential leak points. Flexible enough to handle ground movement and temperature swings, strong enough to hold pressure under load.

Complete your water line

HDPE pipe needs compression fittings to connect, branch, and shut off. Grab what you need in the same order:

Couplings & reducers · Tees · Adapters · Valves & shutoffs · All water pipe & fittings

Features

200 PSI pressure rating
Handles high-pressure agricultural water systems with confidence.

SDR 11 wall thickness
The strength and durability needed for buried water-line applications.

NSF-61 certified HDPE
Safe for potable water; corrosion- and chemical-resistant; built to last underground for decades.

500-foot coil
Covers long distances in a single order, reducing joints and leak points.

Flexible design
Handles ground movement and temperature changes without cracking.

Need exact specs? See our HDPE pipe technical reference — SDR ratings, IPS-OD vs. CTS-OD sizing, ASTM/AWWA standards, and installation guidance.

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Polyethylene HDPE Water Pipe (SDR 11 200 PSI) - 500' Coils