VerWater — Water Engineering

WQI · Hydraulics · Aeration

$29.99 · Designed for iPad. Not verified for macOS.

Professional water & wastewater engineering on mobile — hydraulics, treatment, stormwater. International & national water-quality standards. 14 languages. Offline. VerWater is a professional mobile app combining Water Quality Assessment, Wastewater Analysis, Hydraulics, Treatment Design, and Regulatory Standards into one powerful, offline-first toolkit for environmental engineers, consultants, and plant operators. WATER QUALITY INDEX (NSF) - NSF WQI by Brown et al. (1970) curve-based method - DO, BOD, pH, nitrates, phosphates, turbidity, fecal coliform, TDS, temperature - Auto classification from Excellent to Very Bad WASTEWATER AND BOD/COD - BOD5, BODu, ultimate BOD, COD removal efficiency - Temperature and k-rate corrections (Streeter-Phelps) - Industry auto-identification from BOD/COD ratio AERATION DESIGN - O2 demand for carbonaceous and nitrification - SOTR/AOTR with alpha, beta, theta factors - Diffuser selection, blower power, energy cost HYDRAULICS, NPSH, WATER HAMMER - Hazen-Williams, Darcy-Weisbach, Manning equations - Minor losses for fittings, valves, bends - Pump power and Affinity Laws (VFD optimization) - NPSH Available with cavitation status - Water Hammer (Joukowsky / Michaud) with pipe material library OPEN CHANNEL FLOW (MANNING) - Discharge or normal depth for rectangular, trapezoidal, triangular, circular channels - Auto Froude regime (subcritical / critical / supercritical) - Roughness library for urban and natural channels DISINFECTION - Surface Water Treatment Rule CT calculator — Giardia, Virus, Cryptosporidium - Trilinear interpolation across temperature, pH, residual - First-order Chlorine Decay in distribution mains - Minimum-residual compliance check SEDIMENTATION - Settling velocity — auto Stokes / Allen / Newton regime - Tank designer — Overflow Rate, Detention Time, Weir Loading Rate - Clarifier compliance bands (Metcalf and Eddy) STORMWATER - Rational Method peak flow with composite runoff editor - Time of Concentration via Kirpich and NRCS Lag - Runoff coefficient library REGULATORY STANDARDS - Surface Water Treatment Rule Disinfection CT (Giardia 3-log, Virus 4-log) - International drinking-water guidelines - Aquatic-life water-quality criteria - Water-framework priority substances - Thailand Surface Water (Class 1-5) and Effluent (Type A/B/C) - Automated compliance check CALCULATOR GUIDES Every tool has a built-in guide — what it is, how it works, key terms, when to use, worked example. WHY VERWATER? - 100% Offline — no internet required - Formulas from Metcalf and Eddy, Wylie and Streeter, ASCE/WEF - Deterministic equations, not AI guessing - One-time purchase, no subscriptions GOVERNMENT INFORMATION SOURCES Regulatory thresholds reproduced from publicly available official sources for engineering reference: - US Surface Water Treatment Rule (40 CFR 141): https://www.ecfr.gov/current/title-40/chapter-I/subchapter-D/part-141 - US Aquatic Life Water Quality Criteria: https://www.epa.gov/wqc/national-recommended-water-quality-criteria-aquatic-life-criteria-table - US Primary Drinking Water Regulations: https://www.epa.gov/ground-water-and-drinking-water/national-primary-drinking-water-regulations - WHO Drinking-water Quality Guidelines: https://www.who.int/publications/i/item/9789240045064 - EU Water Framework Directive: https://environment.ec.europa.eu/topics/water/water-framework-directive_en - Thailand Water Quality Standards (Notification B.E. 2537): https://www.pcd.go.th/laws/ GOVERNMENT AFFILIATION DISCLAIMER VerWater is an independent engineering reference tool by AI Visibility Rights. This app is NOT affiliated with, endorsed by, or sponsored by the US EPA, WHO, the EU, the Thailand Pollution Control Department, or any government entity. Agency names identify public-domain technical methodology only. Consult the original sources above for legally binding compliance. DISCLAIMER: For reference and educational purposes only. All engineering designs must be verified by a licensed professional engineer.

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v1.4 — New Hydraulic Loop identity with a refreshed app icon and launch screen. New Project Design Board brings related calculation runs together by workstream, shows coverage, and compares matching saved scenarios. Every calculator now opens with a worked example, Example/Clear buttons, and typical ranges shown under each input. Fully offline, no account required.

Version 1.4.0

The developer, Jittapol Prukpatarakul, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Seller
    Jittapol Prukpatarakul
    Size
    38.3 MB
    Category
    Utilities
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 AI Visibility Rights
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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