Wyoming Administrative Code
Agency 020 - Environmental Quality, Dept. of
Sub-Agency 0011 - Water Quality
Chapter 23 - MINIMUM STANDARDS FOR SUBDIVISION APPLICATIONS
Section 23-8 - Standards for Water Supply Systems
Universal Citation: WY Code of Rules 23-8
Current through September 21, 2024
(a) All applications shall contain the following information:
(i) Identification of the type of water
supply system proposed to serve the subdivision and identification of the
entity or entities responsible for the design, construction, operation and
maintenance of the proposed facility;
(ii) The estimated average and maximum number
of gallons per day for the subdivision water supply system;
(iii) Documentation that the proposed water
supply system will be compatible with and not adversely affected by the sewage
system proposed for the subdivision or any other sources of pollution within a
reasonable distance;
(iv) List of
all surface and groundwater rights which will be used or which may be affected,
including state engineer application and permit numbers and description of
expected effects;
(v) Plans for the
mitigation of water right conflicts resulting from the use of water within the
proposed subdivision; and
(v) The
information required by
W.S.
18-5-306(a) (xi).
(b) In addition to the information required in part (a) of this section, applications proposing to connect to an existing water supply system shall contain the following:
(i) Documentation concerning the potability
of the proposed water supply for the subdivision as evidenced by historic water
quality analytical data and current compliance status;
(ii) Certification by the owner of the water
distribution and treatment facilities that the system can and will provide
adequate service to the proposed subdivision. This certification should address
the willingness and a commitment of the owner to provide service, as well as
the hydraulic capacity of the distribution system and the ability of the
treatment facilities to provide potable water to the proposed subdivision;
(A) The certification shall clearly identify
the point of connection if the connection is not within the boundaries of the
proposed subdivision.
(B) It is the
responsibility of the owner to consider the capacity and ability of the system
to provide water service to the proposed subdivision in accordance with
existing laws, regulations and permit requirements.
(iii) The information required by Section 6,
Chapter 12, Wyoming Water Quality Rules and Regulations shall be provided by a
registered professional engineer. If the necessary information is not already
available, the owner of the water system has the discretion to require the
subdivider to provide the required information.
(vi) The party responsible for operation and
maintenance of the subdivision distribution system will provide for certified
operators pursuant to Chapter 5, Wyoming Water Quality Rules and
Regulations.
(c) In addition to the information required in part (a) of this section, applications proposing to develop a new centralized water supply system shall contain the following:
(i) A demonstration that the water
supply system is sufficient in terms of quality, quantity and dependability and
will be available to ensure an adequate water supply system for the type of
subdivision proposed. The report shall include a narrative summary of:
(A) Where the water supply system source is
derived from groundwater, the geologic setting of the water supply system
source and the area of influence such as nearby communities, sources of
pollution, surface water bodies and aquifers described by a Wyoming registered
professional geologist;
(B) A
written report demonstrating that the proposed source is sufficient in terms of
quality, quantity and dependability for the type of subdivision
proposed;
(C) Source of the water
to be used including proposed and existing surface and groundwater facilities
and their locations;
(D) The
proposed disposal of water not consumed, including water obtained under
permits, storm drainage, dewatering, sewage and other wastewater
sources;
(E) A delineation of
primary sources of water, secondary sources and occasional or seasonal
sources;
(F) Graphic location of
all water supply sources including wells, raw water intakes, treatment
facilities, treated water storage facilities and ponds;
(G) Documentation of all data sources on the
occurrence and availability of surface and groundwater;
(H) Historic stream flows and well
levels;
(I) Senior water
rights;
(J) Flood damage and flood
protection; and
(K) Impact of and
protection from supply shortages.
(ii) The information required by Chapter 12,
Section 6 of Wyoming Water Quality Rules and Regulations.
(iii) Confirmation that the owner of the
subdivision distribution system will provide for certified operators pursuant
to Chapter 5, Wyoming Water Quality Rules and Regulations.
(iv) Water quality data that is
representative of the proposed drinking water source must be provided for the
metals, inorganic constituents, and microbial constituents with Maximum
Contaminant Levels (MCLs) established pursuant to the federal Safe Drinking
Water Act.
(d) In addition to the information required in part (a) of this section, applications proposing to use on-lot wells or surface water that will serve fewer than 25 people shall contain information describing the potential availability and quality of groundwater or surface water proposed within the subdivision. This information may consist of new data, existing data on other working wells in the area, or other data, including drilling logs, from a test well drilled within the proposed subdivision indicating soil types, depth, quantity and quality of water produced in the test well.
(i) For subdivisions proposing to use on-lot
wells or surface water that will serve individual residences or fewer than 25
people, water quality data that is representative of the proposed drinking
water source must be provided for the following analytes:
(A) Total Dissolved Solids (TDS)
(B) Nitrate + Nitrite as N
(C) Total Coliform
(D) Sulfates
(E) Calcium
(F) Magnesium
(G) Sodium
(H) Chloride
(I) Iron
(J) Zinc
(K) Lead
(L) Fluoride
(M) Manganese
(N) Copper
(O) Arsenic
(P) pH
(Q) Additional constituents as may be deemed
necessary by the department.
(ii) Documentation of activities, within a
distance of one quarter (1/4) mile of the subdivision's external boundaries,
that may have potential to adversely effect the quality of the drinking water
supply.
Disclaimer: These regulations may not be the most recent version. Wyoming may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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