The most recent example was that the Registrar of Voters in LA County failed to staff many polling places on primary day. Thousands of voters were stranded with no place to vote. She should had been jailed for her failures.
In Orange County, the sheriff's office, city police and the DA's office are working to solve old murder cases using DNA evidence. They have been quite successful. In LA County, the crime lab is so understaffed and backlogged, that several LA County cities are contracting with the Orange County crime lab to handle their lab work.
It just goes on and on. The bus system in LA has been hauled into court because the bus fleet is so old and decrepit. The freeway system in LA County is years behind in imporvements compared to Orange County. Imagine driving on a 10 lane wide interstate highway (I5) commuting into LA. In Orange County the road has been expanded to 10 lanes wide, 2 of which are for car pools. When you get to the LA County line, it drops back to 6 lanes. It is probably the only major highway in the country which gets narrower as you approach the city.