The state's water minister says she is considering no further changes to water metering rules despite irrigators and environmentalists calling for the laws to be rewritten.

The Commonwealth Environmental Water Holder (CEWH) paused environmental water releases in mid-August following legal advice that they may not be compliant with the rules.

In response, the NSW Parliament passed an amendment in September which Minister Rose Jackson said has given legal clarity for people using water for the environment.

"The NSW Government’s water rules are designed to support environmental watering events which support precious aquatic ecosystems across the state," Minister Jackson said.

"It’s important we ensure strong accountability and transparency, and the recent amendments were developed with these challenges in mind.  

"The amendment provides legal clarity for environmental water holders, river operators and approval holders and we are not considering any further legislative changes at this stage."

The Namoi River at Walgett. [River McCrossen]

Following the advice to the Water Holder, a new interpretation of non-urban metering rules requires environmental water to be metered.

Minister Jackson said the amendment doesn't change that.

She also said that the government is working "as quickly as possible" to install water measurement equipment, including meters, at sites used for environmental watering.

Her office also confirmed that exceptions have been granted to two environmental watering sites where metering is not possible, although they didn't say where.

The August pause drew concern from conservationists including the Nature Conservation Council, who said environmental water legislation is "teetering on amendment after amendment."

NSW Irrigators Council CEO Madeleine Hartley, who has worked in water law and policy, also said that the law should be simplified.

"We need proper consultation and not reactive regulations. We need to be part of the conversation," she said.

"The fact that it seems that government agencies can't work out how to follow these complex laws is concerning when irrigators are made to follow them."