| Made a few calls...
I just got off the phone with the OSU Extension Service and I think your best bet is to get in touch with them at your local County Courthouse.
You can take them a water sample to test and for the paltry sum of $12 they will run an "Irrigation Test" that gives details on Sodium, CaCl, Sulfur, Total Alkalinity, CO3, Nitrate, free Nitrogen, Magnesium, ad-infinitum....
The local agent was surprised to hear you couldn't get that from the local Municipal Water Dept., but at least you have an inexpensive way to get a good analysis done locally.
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Larry Iles
Oklahoma
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