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Last summer, a revolution occurred in Los Angeles landscaping: Across the city, tens of thousands of homeowners tore up their water-thirsty lawns and replaced them with gravel, turf, decomposed granite and a wide range of drought-tolerant plants at a rate never seen before.

The water-saving benefits of this massive landscape overhaul are undisputed — and that’s important in a region that was facing the worst drought in 1,200 years. Still, some experts warned that Angelenos’ zeal to use less water in the backyard would ultimately make the city warmer.

Water conservation in California dipped slightly during the first month that the state’s mandatory water-savings rules were significantly relaxed, regulators said Tuesday. The 21.5% cut in water use in June compared with the same month in 2013 was less impressive than some officials had hoped, but also came as a relief because the numbers suggest that urban Californians will continue to save water — even when they are not required to do so.

Recycled water will be available to San Diego water customers for free beginning Saturday in Scripps Ranch, according to city officials.

The city of San Diego’s public utilities department will offer the water from a fill station at 10137 Meanley Drive on Saturdays from 8 a.m. to 2 p.m. and on Tuesdays from 9 a.m. to 1 p.m. The water is available at no extra charge to city water customers who present valid billing documentation.

Scientists say a tiny endangered fish found in lagoons and streams along the California coast belongs to two separate species.

The tidewater goby, a 2-inch translucent fish, survives in relatively isolated populations from Del Norte County down to San Diego. The fish spend most of their lives in the same puddles, rarely traveling far from where they spawned.

San Diegans are likely already seeing advertisements at regional malls encouraging them to “Live WaterSmart,” which is the main message of an outreach campaign launched Tuesday by the San Diego County Water Authority.

Although state water-use reduction mandates were lifted in May, the Water Authority’s hope is that customers of its 24 member agencies will help maintain what’s already seen as a strong regional commitment to water-use efficiency. In June 2016 — the first month following the end of state water-use reduction mandates — water use was down 23 percent compared to June 2013.