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Chapter 53 — WATER

§ 53.56 DEFINITIONS.

Eureka Zoning Code · 2026-06 edition · updated 2026-07-25 · Eureka

For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.

AIR GAP SEPARATION. The unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, plumbing fixture, or other device and the flood level rim of the receptacle, and must be at least double the diameter of the supply pipe measured vertically above the flood level rim of the vessel. In no case may the gap be less than one inch.

AUXILIARY SUPPLY. Any water source or system other than the public potable water system, that may be available in the building or on the premises.

BACKFLOW. The reversal of flow, other than in the intended direction, into the distribution of the public water system from a user connection.

BACK PRESSURE. The backflow caused by a pump, elevated tank, boiler, or other means that could create pressure within the system greater than the city water supply.

BACK SIPHONAGE. A form of backflow due to a negative or subatmospheric pressure within the water system. BACKFLOW PREVENTION DEVICE. A state device to counteract back pressure or prevent back siphonage.

CROSS-CONNECTION. Any physical arrangement whereby a public water system is connected, directly or indirectly, with any other nonpotable water system, sewer, drain, conduit, pool, storage, reservoir, plumbing fixture, or other device which contains, or may contain, contaminated water, sewage, or other waste or liquid contamination into the public water system as a result of backflow. Bypass arrangements, jumper connections, movable sections, swivel or changeover devices, or other temporary or permanent devices through which, or because of which, backflow could occur, are considered to be cross-connections.

DOUBLE CHECK VALVE ASSEMBLY (DCVA). An approved assembly composed of two single, independently acting check valves, including tightly closing shutoff valves located at each end of the assembly and suitable connections for testing the watertightness of each check valve.

REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTION DEVICE (RPBD). An approved device incorporating two or more check valves and an automatically operating differential relief valve located between the two checks, two shutoff valves, and equipped with the necessary appurtenances for testing. The device must operate to maintain the pressure in the zone between the two check valves, less than the pressure on the public water system side of the device. At cessation of normal flow, the pressure between the check valves must be less than the supply pressure. In the case of leakage of either check valve the differential relief valve must operate to maintain the reduced pressure by discharging to the atmosphere. When the inlet pressure drops below two pounds per square inch, the relief valve must open to the atmosphere thereby providing an atmospheric zone between the two check valves.

ure between the check valves must be less than the supply pressure. In the case of leakage of either check valve the differential relief valve must operate to maintain the reduced pressure by discharging to the atmosphere. When the inlet pressure drops below two pounds per square inch, the relief valve must open to the atmosphere thereby providing an atmospheric zone between the two check valves.

USER CONNECTION. The point of connection of a user's piping to the public potable water supply of the city. WATER USER. Any person obtaining water from the public water supply of the city. ('63 Code, § 5-10.102) (Ord. 469-C.S., passed 5-5-88)

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▸ Contents — Eureka Zoning Code
Eureka Zoning Code
  1. Article I — NAME AND SEAL; FORM OF GOVERNMENT; BOUNDARIES; MUN…
  2. Article II — ELECTIONS
  3. Article III — CITY COUNCIL
  4. Article IV — MAYOR
  5. Article V — ORDINANCES
  6. Article VI — ADMINISTRATION
  7. Article VII — FISCAL ADMINISTRATION
  8. Article VIII — OFFICERS AND EMPLOYEES
  9. Article IX — FRANCHISES
  10. Article X — INITIATIVE, REFERENDUM AND RECALL
  11. Article XI — MISCELLANEOUS PROVISIONS
  12. Chapter 10 — GENERAL PROVISIONS
  13. Chapter 30 — CITY COUNCIL
  14. Chapter 31 — CITY OFFICIALS
  15. Chapter 32 — CITY DEPARTMENTS
  16. Chapter 33 — BOARDS, COMMISSIONS, AND COMMITTEES
  17. Chapter 34 — PERSONNEL POLICIES
  18. Chapter 35 — FINANCE, REVENUE AND TAXATION
  19. Chapter 36 — HEALTH FACILITY REVENUE BONDS
  20. Chapter 37 — ELECTIONS
  21. Chapter 38 — CIVIL EMERGENCIES
  22. Chapter 39 — CITY POLICY
  23. Chapter 40 — TRANSFERS OF CITY-OWNED REAL PROPERTY
  24. Chapter 50 — SEWERS
  25. Chapter 51 — SOLID WASTE
  26. Chapter 52 — UNDERGROUND UTILITY DISTRICTS
  27. ▸ Chapter 53 — WATER
    Overview
    1. § 53.01 MANAGEMENT.
    2. § 53.02 ADMINISTRATION OF FUNDS.
    3. § 53.03 WATER SERVICE CONNECTIONS.
    4. § 53.04 MAIN EXTENSIONS.
    5. § 53.05 WATER CHARGES AND FEES.
    6. § 53.06 INDEPENDENT FIRE SPRINKLER SYSTEMS RATE.
    7. § 53.07 TEMPORARY SERVICE.
    8. § 53.08 TURN-ON CHARGE.
    9. § 53.09 SPECIAL SITUATIONS.
    10. § 53.10 DEPOSITS FOR WATER SERVICE.
    11. § 53.11 BILLING.
    12. § 53.12 METER TESTS.
    13. § 53.13 PROPERTY OWNERS RESPONSIBLE.
    14. § 53.14 SEPARATE SERVICE FOR DWELLINGS; CUSTOMER CONTROL VALVES.
    15. § 53.15 VACANCIES.
    16. § 53.16 ACCESS BY CITY REPRESENTATIVES.
    17. § 53.17 INTERFERENCE WITH WATER SYSTEM.
    18. § 53.18 OPENING FIRE HYDRANTS.
    19. § 53.19 INTERRUPTIONS IN SERVICE.
    20. § 53.20 INTERPRETATION.
    21. § 53.21 SUMMER IRRIGATION CHARGES.
    22. § 53.22 DISCONTINUANCE OF SERVICE FOR VIOLATION.
    23. § 53.35 PURPOSE.
    24. § 53.36 DEFINITIONS.
    25. § 53.37 APPLICATION.
    26. § 53.38 LARGE WATER USERS.
    27. § 53.39 SITE DESIGN REVIEW.
    28. § 53.40 WATER WASTE PROHIBITED.
    29. § 53.41 NONESSENTIAL USES; LIMITATIONS.
    30. § 53.42 ENFORCEMENT.
    31. § 53.43 OPERATIVE DATES.
    32. § 53.44 DISCONNECTION FOR VIOLATION.
    33. § 53.55 PURPOSE.
    34. § 53.56 DEFINITIONS.
    35. § 53.57 POLICY.
    36. § 53.58 INSPECTION AND DISCONTINUANCE OF SERVICE.
    37. § 53.59 WHERE PROTECTION IS REQUIRED.
    38. § 53.60 TYPE OF PROTECTIVE DEVICE REQUIRED.
    39. § 53.61 APPROVED BACKFLOW PREVENTION ASSEMBLY.
    40. § 53.62 INSPECTION AND TESTINGS.
    41. § 53.63 SPECIAL CONDITIONS.
    42. § 53.99 PENALTY.
  28. Chapter 54 — STORM WATER QUALITY MANAGEMENT AND DISCHARGE CONT…
  29. Chapter 55 — ENERGY
  30. Chapter 56 — STREETS
  31. Chapter 70 — GENERAL PROVISIONS
  32. Chapter 71 — TRAFFIC RULES
  33. Chapter 72 — STOPPING, STANDING AND PARKING
  34. Chapter 73 — BICYCLES
  35. Chapter 75 — MOBILE VENDORS OPERATING UPON A STREET
  36. Chapter 90 — ABANDONED VEHICLES
  37. Chapter 91 — ANIMALS
  38. Chapter 92 — FIRE PREVENTION
  39. Chapter 93 — PARKS AND RECREATION
  40. Chapter 94 — HEALTH AND SANITATION
  41. Chapter 95 — MUNICIPAL AIRPORT
  42. Chapter 96 — PARADES AND ASSEMBLIES
  43. Chapter 97 — SMOKING
  44. Chapter 98 — STREETS AND SIDEWALKS
  45. Chapter 99 — TRAINS AND RAILROADS
  46. Chapter 100 — HARBOR REGULATIONS
  47. Chapter 101 — FILMING
  48. Chapter 102 — BEEKEEPING
  49. Chapter 103 — PRIVATE SECURITY AND FIRE ALARM SYSTEMS
  50. Chapter 104 — MILITARY EQUIPMENT USE
  51. Chapter 110 — BUSINESS LICENSES
  52. Chapter 112 — AMBULANCES
  53. Chapter 113 — AMUSEMENTS
  54. Chapter 114 — CABLE TELEVISION SYSTEMS
  55. Chapter 115 — FOOD ESTABLISHMENTS AND OUTDOOR DINING AREAS
  56. Chapter 117 — MASSAGE PARLORS
  57. Chapter 118 — SOLICITORS, CANVASSERS, AND SIDEWALK VENDORS
  58. Chapter 119 — SECOND-HAND DEALERS
  59. Chapter 120 — TAXICABS AND LIMOUSINES
  60. Chapter 121 — OTHER VEHICLES FOR HIRE
  61. Chapter 122 — FOREIGN-TRADE ZONE
  62. Chapter 130 — OFFENSES AGAINST PUBLIC PEACE AND SAFETY
  63. Chapter 131 — PROPERTY OFFENSES
  64. Chapter 132 — DRUG OFFENSES
  65. Chapter 133 — WEAPONS OFFENSES
  66. Chapter 134 — ABATEMENT OF CHRONIC NUISANCE PROPERTIES
  67. Chapter 150 — BUILDING REGULATIONS
  68. Chapter 151 — AIRPORT ZONING
  69. Chapter 152 — PLANNING AND ZONING ADMINISTRATION
  70. Chapter 153 — FLOOD HAZARD AREA REGULATIONS
  71. Chapter 154 — SUBDIVISION REGULATIONS
  72. Chapter 155 — ZONING REGULATIONS
  73. Chapter 155 — ZONING REGULATIONS (old)
  74. Chapter 156 — COASTAL ZONING REGULATIONS
  75. Chapter 157 — HISTORIC PRESERVATION
  76. Chapter 158 — CANNABIS
  77. Chapter 159 — WIRELESS TELECOMMUNICATIONS FACILITIES

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