Lawrence Code of Ordinances ch. 15.12 § 15.12.120

A. The owner shall provide no less than the following:
1. For each dwelling unit:
a. One toilet,
b. One wash basin, and
c. One shower or bathtub;
2. For no more than each eight occupants of rooming units and rooming houses who are not otherwise provided with these facilities:
a. One toilet,
b. One wash basin, and
c. One shower or bathtub;
Provided, that where more than one toilet is required in any toilet room, urinals may be substituted for up to 50 percent of the total number of toilets required, on the basis of one urinal substituted for one toilet.
B. The owner of any dwelling in which any toilet, wash basin, shower or bathtub is to be shared by the occupants of more than one dwelling unit or rooming unit is responsible for maintaining that toilet, wash basin, shower or bathtub in a clean and sanitary condition, including the cleaning of the fixture at least once every 24 hours. This subsection in no way nullifies the requirements of subsection A. of this section.
C. No privy or chemical toilet shall be constructed or continued in use; provided, that the board of health may approve in writing the construction or continued use of any privy or chemical toilet which it determines will not:
(1) Endanger the health of any person; or
(2) Cause objectionable odors or other undue annoyance.
When so approved, a privy or chemical toilet may, subject to written authorization of the board of health, qualify as a toilet within the requirements of subsection A.1. of this section. (See section 15.12.320 .)
In no event may a privy be located within 30 feet of any building used for sleeping or eating, or of any lot line or street.
D. Except in the case of privies or chemical toilets approved by the board of health under the provisions of subsection C. of this section, or unless expressly authorized in any provision in any other section of this chapter, required bathroom facilities shall be accessible from within the building; they shall be so placed as not to require passing through any part of another dwelling unit or rooming unit, and toilets, showers and bathtubs shall be separated from all other areas by walls or partitions which afford privacy. (See sections 15.12.140 and 15.12.200 .)