SPS 384.25(2)(b)1.1. Where concrete tanks are required to have covers, the tanks shall meet one of the following requirements:
SPS 384.25(2)(b)1.a.
a. Withstand a vacuum of at least 2 inches of mercury for 60 minutes, without loss of pressure.
SPS 384.25(2)(b)1.b.
b. Hold water for one hour, without leakage after the tank has been filled with water to the top of the cover and let stand for 24 hours, then refilled to the top of the cover.
SPS 384.25(2)(b)2.
2. Concrete tanks that are not required to have a cover shall hold water for one hour, without leakage after the tank has been filled with water and let stand for 24 hours, then refilled to the highest liquid level required to be held in the tank.
SPS 384.25(2)(c)1.1. Steel tanks that are required to have a cover shall be capable of withstanding one of the following requirements:
SPS 384.25(2)(c)1.a.
a. An internal air pressure of at least 5 psig for 15 minutes, without loss of pressure.
SPS 384.25(2)(c)1.b.
b. An internal water pressure of at least 5 psig for 60 minutes, without loss of pressure.
SPS 384.25(2)(c)2.
2. Steel tanks that are not required to have a cover shall be capable of holding water after being filled to their inlet or outlet, whichever is higher, for 24 hours without loss of water.
SPS 384.25(2)(d)
(d) Tanks constructed of materials other than concrete or steel. SPS 384.25(2)(d)1.1. Tanks constructed of materials other than concrete or steel that are required to have a cover shall be capable of withstanding one of the following requirements:
SPS 384.25(2)(d)1.a.
a. A vacuum of at least 2 inches of mercury for 60 minutes, without loss of pressure.
SPS 384.25(2)(d)1.b.
b. An internal air pressure of at least 5 psig for 15 minutes, without loss of pressure.
SPS 384.25(2)(d)1.c.
c. An internal water pressure of at least 5 psig for 60 minutes, without loss of pressure.
SPS 384.25(2)(d)2.
2. Tanks constructed of materials other than concrete or steel that are not required to have a cover shall be capable of holding water after being filled to their inlet or outlet, whichever is higher, for one hour without loss of water.
SPS 384.25(3)
(3) Strength. Tank assemblies, including fittings and access openings, shall be capable of withstanding loads and pressures that the tanks are intended to encounter and remain watertight.
SPS 384.25(4)(a)1.1. The interior of a concrete tank assembly, including fittings and access openings, shall have a protective coating or be constructed of material, above the lowest liquid level expected in the tank, that will inhibit the deterioration of the concrete due to internal environmental effects.
SPS 384.25(4)(a)2.
2. Under subd.
1., concrete with a water cement ratio not exceeding 0.45 shall be considered resistant to deterioration due to internal environmental effects.
SPS 384.25(4)(b)1.1. Steel tank assemblies, including fittings and access openings, shall have a protective coating that will inhibit the deterioration of the steel due to internal and external environmental effects.
SPS 384.25(4)(b)2.
2. Steel tank assemblies, including fittings and access openings, installed underground shall be provided with cathodic protection in accordance with UL Standard 1746 or STI-P
3.
SPS 384.25(4)(c)
(c) Tanks constructed of materials other than concrete or steel. Tank assemblies, including fittings and access openings, constructed of materials other than concrete or steel shall be protected against deterioration due to internal and external environmental effects.
SPS 384.25(5)(a)
(a) Each tank, except camping unit transfer containers, shall be provided with a means of venting gases formed inside of the tank to the atmosphere.
SPS 384.25(6)
(6) Pipe connection. All pipe connection openings to a tank shall be designed to allow connections in accordance with s.
SPS 384.40.
SPS 384.25(7)(a)
(a) Each covered tank shall be provided with one or more openings of sufficient size and located in such a manner to provide a means for inspection or required servicing or maintenance of the tank.
SPS 384.25(7)(b)
(b) Manhole openings shall be at least 23 inches in the least dimension.
SPS 384.25(7)(c)
(c) Anaerobic treatment tanks located below ground shall have a manhole opening over the inlet of the most upstream compartment, in each compartment, and over all treatment apparatuses and pumps.
SPS 384.25(7)(d)1.1. Except as provided in subd.
2., manhole openings for anaerobic treatment tanks located below ground shall extend to a distance not greater than 6 inches below finished grade.
SPS 384.25(7)(d)2.
2. Manhole openings over all anaerobic treatment apparatuses and pumps shall extend to at least 4 inches above finished grade.
SPS 384.25(7)(e)
(e) Servicing and maintenance openings for holding components shall comply with all of the following:
SPS 384.25(7)(e)2.
2. Be at least 23 inches in the least dimension and be located above pumps or siphons located in the holding component.
SPS 384.25(7)(f)
(f) Inspection openings for tanks located below ground shall extend at least to the finished grade.
SPS 384.25(7)(g)
(g) Inspection, servicing and maintenance openings shall terminate with a means that prevents entrance of deleterious materials.
SPS 384.25(7)(h)
(h) Covers located at or above ground for openings larger than 8 inches in diameter shall be provided with locking devices or other effective measures to prevent unauthorized access.
SPS 384.25(8)(a)
(a) Covers for all tank openings larger than 8 inches in diameter shall be provided with a permanent warning label indicating the dangers of entering the tank, in accordance with this subsection.
SPS 384.25(8)(b)
(b) The warning label shall be securely attached and made of a noncorrosive metal or plastic bearing the legend “DO NOT ENTER WITHOUT PROPER EQUIPMENT" or “DANGEROUS GASES EXIST IN TANK" or similar language.
SPS 384.25(8)(c)
(c) The label shall be rectangular in shape with minimum dimensions of 4 by 5 inches.
SPS 384.25(8)(d)
(d) The wording on the label shall be a minimum of
½ inch in height and be either indented or raised.
SPS 384.25(9)(a)
(a) Pumps for POWTS used to disperse air, treated wastewater or final effluent shall be rated by the pump manufacturer for such use.
SPS 384.25(9)(b)
(b) Siphons for POWTS shall be rated by the siphon manufacturer for wastewater use.
SPS 384.25(9)(c)
(c) All other dosing apparatus for POWTS shall be constructed of corrosive resistant materials and designed to perform as intended.
SPS 384.25(10)
(10) Alarm system. All pump and alarm controls for POWTS shall be specifically designed by the manufacturer for such use.
SPS 384.25(11)(a)
(a)
Anaerobic treatment tanks. Each treatment tank which has an anaerobic treatment compartment shall be labeled with a permanent label located near an inlet or outlet opening of the tank. The label shall be embossed, impressed, or securely attached to the tank. The label shall include all of the following information:
SPS 384.25(11)(a)2.
2. Capacity of each compartment of the tank or the manufacturer's model number.
SPS 384.25(11)(b)1.1. Each aerobic treatment tank complying with NSF Standard 40 and listed by a nationally recognized ANSI accredited third party certified listing agency acceptable to the department shall be provided with 2 label plates. The labels shall conform with all of the following:
SPS 384.25(11)(b)1.a.
a. Label plates shall be inscribed to be easily read and understood, and be securely attached.
SPS 384.25(11)(b)1.b.
b. One label plate shall be attached to the front of the electrical control box and the second label plate shall be attached to the aeration equipment assembly, tank, or riser at a location normally subject to access during inspection of the unit.
SPS 384.25(11)(b)1.c.
c. Each label plate shall include name or trademark of the manufacturer, model number, and rated daily flow capacity of the unit.
SPS 384.25 Note
Note: See ch.
SPS 384 Appendix section
A-384.11 for acceptable listing agencies.
SPS 384.25(11)(c)
(c)
Other treatment, holding and combination treatment-holding tanks. Except as required in par.
(a) or
(b), each treatment tank and holding tank shall be labeled with a permanent label located near an inlet or outlet opening. The label shall be embossed, impressed, or securely attached to the tank. The label shall include all of the following information:
SPS 384.25(11)(c)2.
2. Capacity of each compartment of the tank or the manufacturer's model number.
SPS 384.25(12)
(12) Other treatment components. A treatment component not specifically covered in this section may not be sold for use in a POWTS or may not be installed in a POWTS, unless it has received department approval and conforms to the applicable performance standards of chs.
SPS 382 to
384, and ch.
145, Stats.
SPS 384.25 History
History: Cr.
Register, April, 2000, No. 532, eff. 7-1-00;
CR 02-129: r. and recr. (7) and (11)
Register January 2004 No. 577, eff. 2-1-04;
CR 07-100: am. (7) (h), renum. (10) (a) to be (10), r. (10) (b)
Register September 2008 No. 633, eff. 10-1-08; correction in (5) (b), (6), (12) made under s.
13.92 (4) (b) 7., Stats.,
Register December 2011 No. 672;
CR 17-065: am. (12)
Register June 2018 No. 750, eff. 7-1-18.
SPS 384.30(1)(1)
General. When designing a plumbing system, due consideration shall be given to sizing, working pressure, temperature and material, compatibility of a plumbing system with the water and wastewater to be conveyed, and the environment in which the plumbing system is to be installed.
SPS 384.30(2)
(2) Sanitary drain and vent systems and POWTS inspection and observation piping. Sanitary drain systems and vent systems and POWTS inspection and observation piping shall be of such material and workmanship as set forth in this subsection.
SPS 384.30(2)(a)
(a) Above ground drain and vent pipe. Except as provided in s.
SPS 382.33 (2), drain pipe and vent pipe installed above ground shall conform to one of the standards listed in Table 384.30-1.
SPS 384.30(2)(b)
(b) Underground drain and vent pipe. Except as provided in par.
(d), drain pipe and vent pipe installed underground shall conform to one of the standards listed in Table 384.30-2.
SPS 384.30(2)(c)
(c) Sanitary building sewer pipe. Sanitary building sewer pipe shall conform to one of the standards listed in Table 384.30-3.
SPS 384.30(2)(d)1.1. Nonpressurized, nonperforated drain piping conveying treated wastewater from a POWTS treatment or holding component to a POWTS treatment or holding component, distribution cell or dispersal zone shall conform to one of the standards listed in Table 384.30-3.
SPS 384.30(2)(d)2.
2. Nonpressurized perforated drain piping conveying treated wastewater in a POWTS soil treatment or dispersal component shall conform to one of the standards listed in Table 384.30-4.
SPS 384.30(2)(d)3.
3. Pressurized perforated drain piping conveying treated wastewater in a POWTS treatment or dispersal component shall conform to one of the standards listed in Table 384.30-5 and shall be perforated in accordance with the POWTS design.
SPS 384.30(2)(e)
(e) Pressurized drain pipe. Except as provided in par.
(d) 3., pressurized drain pipe shall conform to one of the standards listed in Table 384.30-5 and shall be rated for the working pressure and temperature to which it will be subjected for a specific installation.
SPS 384.30(2)(f)
(f) Chemical drain and vent pipe. Drain systems and vent systems for chemical wastes shall be of approved corrosion resistant material. The manufacturer of the pipe shall indicate to the department the material's suitability for the concentrations of chemicals involved.
SPS 384.30(2)(g)
(g) Catch basins, interceptors and sumps. Catch basins, interceptors and sumps shall be constructed in a watertight manner of precast reinforced concrete, reinforced monolithic concrete, cast iron, coated 12-gauge steel, vitrified clay, fiberglass, plastic or other approved materials.
SPS 384.30(2)(h)
(h) Manholes. Manholes shall be constructed in a watertight manner of precast reinforced concrete, reinforced monolithic concrete, brick or block, fiberglass or other approved materials. Fiberglass manholes may be approved for use in traffic areas if the top section of the manhole is not made of fiberglass.
SPS 384.30(2)(i)
(i) Service suction lines. A service suction line or pump discharge line serving a holding tank for cleaning purposes shall conform to one of the standards listed in Table 384.30-5. Joints and connections for suction lines shall conform to s.
SPS 384.40. The use of mechanical joints shall be in accordance with the recommendations and instructions specified by the manufacturer.
SPS 384.30(2)(j)
(j) POWTS inspection and observation pipe. A POWTS inspection and observation pipe shall conform to at least one of the standards listed in Table 384.30-1.
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See PDF for table 
a. The installation of synthetic rubber hose is limited in use to indirect waste piping or local waste piping from dishwashers in accordance with s. SPS 382.33 (9) (d). SPS 384.30 Note
a. Copper tubing, type M, may not be installed underground.
SPS 384.30 Note
b. Limited to pipe with a SDR of 26 or less.
SPS 384.30 Note
c. Limited to pipe weight of schedule 40.
