Wastewater Field Guide
Practical, easy-to-scan references for wastewater and water-treatment operators.
- TapShare at the bottom of Safari.
- Scroll down and tap Add to Home Screen.
- Tap Add. The pie chart icon lands on your home screen.
CALCULATORS
Plug in your numbers.
Calculators that show their work, so the answer comes with the steps you'd write on paper.
OPERATOR REFERENCE
Look it up instead of guessing.
Every formula in US and metric, the twelve wheels worth memorizing, the conversions that make units line up, the abbreviations behind the letters, and the two OSHA rules you cannot afford to get wrong — all readable on a phone in the field.
- FULL SETFormulasEvery exam formula in US and metric form, grouped by what you're working on and filterable by name.
- DIAGRAMSPie WheelsTwelve formulas drawn as wheels — cover the piece you want and read off the arithmetic.
- UNITSConversion FactorsGet every term into matching units before you run the numbers.
- GLOSSARYAbbreviationsMLVSS, SSV30, SOUR — what the letters on the page actually mean.
- SAFETYConfined Space & LOTOThe two rules that kill operators most, with the citation behind every line and a straight answer on whether OSHA covers you.
OPERATOR MATH
Know why the number works.
For the days you have to show your work, defend a result, or study for the next license. It all comes back to one relationship between dose, flow and feed rate — read here as a diagram, then extended into the same math under three different names, the adjustments for demand and purity, and what the pounds cost you.
FOUNDATIONDavidson Pie ChartThree worked examples · Feed rate, dose, and flow