Nebraska Swimming Pool Operators Clinic - Part 1

This section introduces common contaminants in swimming pools, such as body discharges, environmental debris, and personal care items. It highlights the importance of showering before swimming to reduce disinfectant demand and discusses waterborne diseases like eye and skin infections, respiratory issues, and emerging germs like MRSA and Cryptosporidium. Cryptosporidium is particularly resistant to chlorine, making it a significant concern, especially in wading pools where children are more susceptible due to their high fecal accident rate. The speaker stresses the need to avoid swallowing pool water and outlines the high infectivity of certain pathogens, with one Cryptosporidium parasite being enough to sicken a toddler. Established procedures for handling fecal accidents are crucial, differentiating between formed stool (low crypto risk) and diarrhea (high crypto risk). The CDC Healthy Swimming website is recommended for additional resources.

This part details Title 178, Chapter 2 of Nebraska's regulations. All pools must be licensed by the Department of Health and Human Services. Plans and specifications for new or modified pools must be submitted by an engineer or architect, with a penalty for late submission. 'Like-for-like' replacements (e.g., pipes, filters) do not require new plans. Pool classifications include Class A (municipal), Class B (hotel/motel), Class C (spas), Class D (wading pools), Class E (recycled spray parks), and Class F (health clubs). Bathhouses in Class A pools require daily disinfection, liquid soap, and paper towels. Water temperature in fixtures has minimums and maximums, depending on adjustability. Food and drink are allowed only in designated areas and unbreakable containers. Pool tubs must be smooth and free of cracks, handrails secure, and ladder rungs slip-resistant.

The section continues with depth markings (4-inch letters, every 25 feet, on deck and inside the pool edge) and ensuring the pool deck is in good repair, clear of obstructions to facilitate emergency access. Drowning or near-drowning incidents must be reported to the Health Department immediately (24/7 hotline), with failure to report leading to licensing action. Accidents requiring hospitalization must be reported within 24 hours. Class A pools must conduct emergency drills. Certified pool operators are required to be present at Class A pools when open, while for Class B and F pools, operators must be 'available' within 60 minutes. State law does not specify an age limit for operators but OSHA rules prohibit those under 18 from entering a pump room. Operators are responsible for code compliance, supervising user safety, operating recirculation systems, and maintaining water chemistry according to standards, closing the facility if issues arise.

Lifeguard numbers for Class A pools are based on bather count or surface area. Lifeguards are mandatory at Class A facilities, with a ratio of 1 per 100 bathers or 2,000 square feet (whichever is less). Class B and F pools do not have such a bather ratio due to optional lifeguard service. Guards need adequate rest, must be able to view all pool areas, and oversee wading pools as part of Class A facilities. Lifeguards must complete a nationally recognized course (e.g., Red Cross) and renew CPR certification annually (even if cards state two years), with a practical component. Lifeguards need distinguishing swimsuits and a rescue tube within arm's reach. Guards must be within 50 feet of water slide discharge areas (watching up to three slides). Lifeguard chairs should be strategically placed. Exceptions for lifeguards include swim meets and classes, though it's still highly recommended to have them for safety. Class A pools require a backboard with three straps; other pools require a ring buoy or rescue tube with a rope as long as the pool's width, plus a shepherd's crook (10-12 feet).

Mandatory signage includes pool regulations, capacity, 'authorized personnel only' on pump room doors (which must be locked), and 'warning no lifeguard on duty' for Class B/F pools (children under 16 'must not' use without adult supervision). Spa areas need signs prohibiting children under five. The boundary between deep and shallow ends must be clearly marked by a rope and painted line (4 inches wide). Pool enclosures must be at least six feet high, with self-closing and self-latching gates/doors (latch at 54 inches) and no gaps greater than four inches. Telephones with emergency numbers (including facility name and address) are required. First-aid kits are mandatory, with specific contents for Class A pools. Pool water must be clear, with the main drain visible; if not, the entire pool must be closed. Indoor pools and pump rooms with gas water heaters require carbon monoxide detectors. Water chemistry standards: chlorine (min 2 ppm, max 10 ppm), bromine (min 2 ppm, max 18 ppm), spas (chlorine min 3 ppm, bromine min 4 ppm). pH must be 7.2-7.8. Combined chlorine must not exceed 0.5 ppm. Stabilizer (cyanuric acid) maximum is 50 ppm. Alkalinity minimum is 80 ppm (no maximum).

Pool water must be tested for sanitizer and pH prior to opening and every four hours thereafter. Total alkalinity, combined chlorine, and stabilizer should be tested at least weekly. All test results, chemical additions, modifications, and equipment maintenance must be documented in a log (retained for one year, or three years in Douglas County). Patron loads should also be recorded. Reasons for immediate pool closure include: excessive debris, any type of fecal accident (with specific procedures for different types), threatening weather (especially lightning for both indoor/outdoor pools), no certified pool operator available/present, missing safety equipment, unclear main drain visibility, sanitizer levels outside required ranges, pH outside 7.2-7.8, and combined chlorine above 0.5 ppm. The operator is responsible for initiating closure under these conditions.

This section focuses on the mechanics of a closed-loop swimming pool system where water is continuously treated and recirculated. The circulation system must operate 24/7 to ensure effective disinfectant distribution. Factors influencing circulation include pool shape, pump operation, and surface removal systems (gutters or skimmers). Gutters are ideal for continuous dirty water removal, while skimmers are point-source systems that collect larger debris in baskets and also help to remove dirty surface water. Skimmer baskets must be regularly cleaned to maintain flow. Chlorine tablets should never be placed in skimmers due to chemical exposure risks and potential damage to equipment.

The pool pump room houses equipment like hair and lint strainers (protecting the pump impeller from large debris), the pump (with an impeller that moves water), and the motor (driving the impeller). A critical safety reminder: the drive shaft connecting the motor to the impeller must be guarded to prevent severe injury. Following the pump, water enters the filtration system (e.g., sand or diatomaceous earth filters). Automated chemical feed systems are typically the last step in the pump room, injecting corrosive disinfectants into the treated water before it returns to the pool. Operators must understand how to operate, override, and calibrate these automated systems. Return pipes then distribute the treated water back into the pool basin. Flow gauges measure water flow (gallons per minute), indirectly indicating issues like clogged skimmers, damaged impellers, or dirty filter media, allowing operators to troubleshoot problems.

The turnover rate is the time it takes for the entire pool volume to be filtered. It's calculated using pool volume (length x width x average depth x 7.5 to convert to gallons) and the actual flow rate from the flow gauge. Different pool types (spray parks, wading pools, lap pools, diving wells) have specific turnover rate requirements (e.g., 30 minutes for spray parks, 1 hour for pools under 2 feet deep, up to 6 hours for pools over 5 feet). Filter efficiency is influenced by filter type, surface area, water flow rate, and water dirtiness. Pressure and vacuum gauges on filters indicate when cleaning (backwashing or bumping) is necessary. Finally, protecting the potable water supply from pool contamination is vital, achieved through air gaps or backflow prevention devices when filling pools or wash buckets.

The Virginia Graham Baker Act (VGB Act), incorporated into Nebraska law, addresses entrapment hazards (hair, jewelry, limbs, full body) at pool drains. All Nebraska pools are compliant, having submitted documentation on their safety measures (e.g., dual drains, large drains, Safety Vacuum Release Systems - SVRS). Operators must ensure these systems remain in good repair; a disabled SVRS, for example, could lead to severe injury, as illustrated by a real-world incident. Drain covers also have expiration dates and must be replaced as needed, with documentation available for inspection. The Americans with Disabilities Act (ADA) requires commercial pools to remove barriers for access. While not directly enforced by Nebraska State code, any structural modifications to comply with ADA (e.g., permanent stairs, ramps) must have plans submitted to the State Health Department. Portable access equipment (e.g., chair lifts, temporary stairs) does not require submission.