Guides
Guides for small water system operators
Written for the people who actually do the round: park owners, maintenance staff, campground hosts and contract operators. Every rule is cited to its source.
By type of system
Chlorine
Chlorine rules by state
- Texas chlorine residual requirements0.2 mg/L free (0.5 total as chloramine), entry point and distribution
- Pennsylvania chlorine residual requirements0.40 mg/L free at the entry point; 0.2 mg/L in distribution
- Ohio chlorine residual requirements0.2 mg/L free or 1.0 mg/L combined, throughout distribution
- Illinois chlorine residual requirementsCommunity: 0.5 mg/L free or 1.0 mg/L combined. Non-community (IDPH): 0.1 mg/L free where required
- Indiana chlorine residual requirementsIDEM form: monthly average ≥0.2 mg/L free or ≥0.5 mg/L total
- Michigan chlorine residual requirementsSet for each system (the numeric rule minimum is for surface water); 4.0 mg/L maximum
- Missouri chlorine residual requirementsRequired systems: 0.5 mg/L free at entry; 0.2 mg/L total in distribution
- Florida chlorine residual requirements0.2 mg/L free or 0.6 mg/L combined, throughout distribution
- Washington chlorine residual requirementsDetectable = 0.2 mg/L in all active parts of distribution (when chlorinating)
- California chlorine residual requirementsGuidance target 0.2–1.0 mg/L free in distribution; 4.0 mg/L maximum
Meters
Records and reports
- How long to keep water system recordsFederal retention periods, state rules for daily logs, and what a sample record must include.
- Correcting logbook entriesOne line through, initial, date and reason. Plus late and missed entries.
- Electronic vs paper logbooksWhat the rules say about digital logs, and a checklist for your regulator.
- Monthly operating reportsWhat goes on an MOR, deadlines by state, and filling it in from your log.
- GlossaryResiduals, meters and rules in plain English.