We were informed of changes to the local plumbing codes here in Omaha, NE that are only going to raise the cost sprinkler systems. Those that do it by code are going to have to raise their prices in will lose business to those that don't do it by code because of the huge cost difference. What we found out was: 1) 3/4" backflows can have a maximum flow of 7 GPM. The zones will have to be sized to achieve no more than 7 GPM even if you can get 12 GPM. 2) 1" backflows can have a maximum flow of 12 GPM. * They are requiring this to make sure that velocity is kept be low the 5 fps. 3) Since backflows can only be installed by plumbers here, it doesn't really pertain to us, but there is a minimum of 3' of copper from the foundation wall before the manifold or can be converted to pvc as the norm here. 4) A maximum static pressure of 80 PSI is the limit. Here, we can get around 100 PSI normally. 5) Any turf that is over 10' in width, such as the side of the house to property line, requires an opposing row of either square or triangle spacing. No more placing heads on the driveway edge and spraying 12' towards the property line. 6) Mandatory PRS (pressure regulating stems) for sprays. We typically install Hunter pro-sprays on *cheaper* systems and institutional sprays on the more expensive systems. No more, all institutional sprays from here on out. I know we can go with the add on PRS to pro-sprays, but makes more sense to us to just use institutional sprays. Typically, we install 5 or 6 zone systems on residential yards. 2 or 3 rotors zones in the back, 1 in the front, and a spray zone on each side of the house that ties in with the parking strip. Now, we are looking at 8 to 10 zones just to comply with the code because of opposing row of sprays and lower available GPM. We also on occassion install ponds and were told that plumbers now have to pull a permit for a water feature pond. Then the pond must be hooked up to the house's sanitary sewer, but off the record we were told that we are to be able to prove that we can drain the water from the pond onto the property without having the water flow onto any other property or storm sewer to satisfy the requirement for now. I am all for rules and regulations, but this seems over the top. We are a company that does things by the rules so we are going to follow them, but I can't imagine why such strigent rules. I do just fine with 12' H nozzles on the side of my house that is 12' from the driveway to the property line and my grass is green and there is no extra water being thrown onto the neighbor's yard. For now, I'm safe from these rules as I live in a city just outside of Omaha, but the plumbing codes for the cities around the Omaha metro area typically follow Omaha's codes. I'm curious as to what you guys think of all these codes.