Yes, every government entity I know does hire an engineering company to carry out their work, but when suppliers lie about their materials and falsify specs, contractors cut corners, or the entity itself ignores the regulations and warnings, it doesn't make much difference how many engineers you have, or how many regulations address the issue. The result will not be satisfactory. Enforcement needs to have teeth, but even that is no guarantee if there are parties determined to circumvent all of those things. China has severe penalties, yet they are still occasionally forced to imprison offenders and even go so far as execution. What can you do... Apparently a quick buck can be very tempting to some.
--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."