Water used to be called a water hazard. Now it is a penalty area, and the change was not just cosmetic — a committee can mark anything as a penalty area, water or not. Desert scrub, a lava field, dense woods, a ravine. If it is staked or lined, Rule 17 governs it, wet or dry.
First: you can just play it
A ball in a penalty area is playable, no penalty, and since the 2019 overhaul you have far more freedom in there than you used to.
Ground your club behind the ball. Take practice swings that touch the ground or the water. Move loose impediments — leaves, sticks, stones — out of your way.
All of it, no penalty. The old "never touch anything in a hazard" rule is gone.
What you still cannot do is improve your lie or your swing path by breaking or bending anything growing, or building a stance. Normal Rule 8 stuff, same as everywhere else.
Is it actually in there?
The standard is known or virtually certain. Not "probably." Not "well, where else would it be." If you did not see it go in and there is a genuine chance it is lost in the long grass short of the water, then it is a lost ball under Rule 18.2 and you are looking at stroke and distance.
This is the rule people hand themselves the most slack on, and it is the one that costs the most strokes when applied honestly.
The edge itself: stakes and lines define the boundary, and the line or stake is in the penalty area. Your ball is in the penalty area if any part of it touches it. So a ball resting on the painted red line is in.
Yellow: two options
Yellow means water you must play over or around — usually a pond fronting a green. One penalty stroke buys you:
Stroke and distance
Replay from where you played your last shot.
Back on the line
Find the point where your ball last crossed the edge of the penalty area. Keep that point between you and the hole and go straight back along that line as far as you like. Pick a spot on the line and drop within one club-length of it, no nearer the hole.
That is the whole menu for yellow. Notice what is missing: there is no sideways drop from yellow. If you cannot get a decent angle going backwards, your only alternative is the walk back.
Red: three options
Red is the same two, plus the one everybody actually uses:
Stroke and distance
Same as above.
Back on the line
Same as above.
Lateral relief
Two club-lengths from the point where the ball last crossed the edge of the penalty area, no nearer the hole.
Red is now the default marking at most courses precisely because that third option keeps things moving. Yellow gets reserved for the hazards where the committee wants the water to genuinely defend the hole.
The drop on the other side
Here is the myth. Ball crosses into a red penalty area on the left of the fairway, comes out the far side of a creek, and someone says "just drop it over there, opposite side, two club-lengths."
That is not in Rule 17. Opposite-side relief was removed from the Rules and now exists only as an optional Model Local Rule that a committee can adopt for a specific penalty area — typically one where taking relief on the correct side would leave you with no shot at all, or in a spot you cannot safely reach.
If your card or your notice board says it is in effect on the 7th, take it on the 7th. Otherwise, your two club-lengths are measured from where the ball last crossed the edge, on whichever side that was.
Two things you do not get in there
- No unplayable. Rule 19 does not apply inside a penalty area. Your options are Rule 17's options and nothing else.
- No free relief from abnormal course conditions. Casual water in a dry ditch that is marked as a penalty area? Ground under repair inside the stakes? An embedded ball? No free relief for any of it. You play it, or you take your penalty and get out.
That second one surprises people. A dry, grassy, perfectly playable red-staked ditch feels like ordinary rough — but the moment it is staked, the free-relief rules switch off inside it.
The short version
Rule 17 at a glance
- Applies to
- Any area staked or lined as a penalty area — water or not
- Playing it
- Allowed, no penalty. You may ground the club and move loose impediments.
- Standard for taking relief
- Known or virtually certain the ball is in there. Otherwise it is a lost ball.
- Yellow
- Stroke and distance, or back on the line. One penalty stroke.
- Red
- Those two, plus two club-lengths from the crossing point, no nearer the hole.
- Reference point
- Where the ball last crossed the edge
- Opposite side
- Local Rule only. Not part of Rule 17.
- Not available inside
- Unplayable relief, free relief from abnormal conditions, embedded ball relief
Written against the 2023 edition of the Rules of Golf, which remains the edition in force. The R&A has said the next full edition arrives 1 January 2028. Local Rules at your course can change any of this — the card and the notice board win.