Can you be fined for washing your car at home?

Washing your car at home may feel like a responsible and cost-saving option, but it could end up proving far more expensive than expected.

According to a report by Stuff, the issue has sparked online debate after a social media post claimed a person was fined $750 for washing their car at their Auckland home. A user on RedNote said they were shocked to learn their friend had received the fine after washing a vehicle on their driveway late last year, with a neighbour reportedly complaining that the use of foam could pollute groundwater.

Auckland Council says car wash water does not simply vanish once it runs off driveways. Acting compliance manager Jesse Hindt explained that wash water typically flows into the city’s stormwater system, which drains directly into streams, rivers and the sea.

“This water can carry detergents, oil, fuel residues, metals and dirt that contaminate waterways, poisoning aquatic life and damaging habitats,” said Hindt, Stuff has reported.

“Even biodegradable detergents pollute waterways.”

Those hoping community or charity car washes might avoid enforcement are also being warned to take care. Auckland Council has said fundraisers and community groups must still ensure run-off does not enter the stormwater system, according to RNZ.

Under the Resource Management Act (RMA), the discharge of contaminants into water is illegal. Individuals can face fines of up to $1500, while companies can be fined as much as $3000. Penalties under the Act were increased in September last year, meaning earlier offenders may have been fined under previous, lower limits. Councils are legally required to enforce the legislation, Stuff has reported.

To reduce environmental harm and avoid potential fines, Auckland Council advises residents to wash their vehicles on unsealed surfaces. This includes gravel or grass, or by diverting runoff to unsealed ground using sandbags.