Fable
After the canal began charging by the number of gate openings, the landowner finally dared to plant another plot
Qingqu Village's water association used to charge an annual fee per household. Whether a household grew only two mu of vegetables or contracted half a rice paddy, they paid the same amount at year-end. When the village was small, everyone thought this was fair.
A few years later, greenhouses, orchards, and large rice paddies appeared in the village. Water usage diverged more and more. Small vegetable farmers found it too expensive, while large field owners feared that water would prevent canal expansion. The annual fee kept light users out and let heavy users take advantage.
Water fees would first be changed to charge by mu. It sounded reasonable, but problems soon appeared. Orchards had few mu but used water precisely; rice paddies had many mu but irrigated in concentrated bursts; some fields had small registered areas but secretly opened the gates for a long time at night.
The guild leader then limited each household to opening the gate at most three times. As a result, everyone rushed to open the gate in the same time slot, water pressure dropped, and those who truly needed to save their seedlings could not get a turn. The limit brought costs somewhat under control, but it also suppressed customer value along with it.
After a drought season, the water utility would discover that what it lacked was not harder restrictions, but bills that changed with actual water use. Light users should enter with a low threshold, heavy users should pay more for using more, and sudden excess usage should have a price signal.
They installed water gauges at every gate, recording gate-opening duration, flow, field plot, season and the overage portion. Bills changed from a flat annual fee to a base fee plus usage fee; large customers could prepurchase water volume, with overages billed separately.
The new method changed the behavior of both sides. Small vegetable farmers dared to try it, orchards were willing to pay for stable water pressure, and large field owners became more cautious during peak periods. The water association could also expand the channel based on real demand, rather than guessing who needed how much through arguments.
The key to usage-based pricing is not to sell every drop of water at a high price, but to let revenue, cost, and customer value grow together with usage. As long as metering is trustworthy and the cost curve is clear, it can move a product from fixed subscriptions toward charging that is closer to consumption and value. Later the water association also encountered new disputes. Some complained that peak-season unit prices were high, and some worried that bills were hard to understand. The chairman made the water gauge records public for each household to check, and wrote the tiers, caps, and prepurchase rules clearly in advance. Usage-based charging without transparent metering only becomes new distrust; when metering is trustworthy, customers are willing to entrust more fields to the canal. Later the water association reviewed peak costs monthly. If usage growth did not bring enough revenue, expanding the canal was out of the question; if prices were too rigid, light users would leave again.