Denton County offices will be closed on Monday, September 2nd in observance of Labor Day

Allowable Discharges

(a) water line flushing;

(b) Runoff or return flow from landscape irrigation, lawn irrigation, and other irrigation utilizing potable water, groundwater, or surface water sources - these forms of discharges pose some risk to water quality. However, so long as proper application procedures have been followed, the risk is only minimal. That is the reason it is important to follow the directions on containers for pesticides, herbicides and fertilizers.

(c) Discharges from potable water sources - since potable water is drinkable, potable water entering our storm drainage system does not pose a threat to water quality.

(d) Diverted stream flows - streams are diverted from time to time for different reasons. If a stream is diverted from its natural flow into a County storm drainage system it is not considered a risk to water pollution because the stream water will not be adding pollutants to our waterways.

(e) Rising ground waters and springs - springs naturally bring ground water to the surface. Additionally, ground waters may be brought to the surface when they become saturated from rainfall. These water sources generally contain very low levels of pollutants and do not pose a great risk to our water resources.

(f) Uncontaminated ground water infiltration - ground water infiltration generally occurs in underground storm sewer pipes. As ground water is generally free of pollutants, this form of discharge poses little risk to our water resources.

(g) Uncontaminated pumped ground water - many individuals in the County use wells as their source of water. Water pumped from wells is generally free of pollutants of poses little risk to our water resources.

(h) foundation and footing drains;

(i) Air conditioning condensate - air conditioners produce condensation as a part of their normal operation. The water that is formed comes from water vapor in the atmosphere and generally will not contain pollutants.

(j) water from crawl space pumps;

(k) Individual residential vehicle washing - while residential vehicle washing is an allowed discharge into our storm drainage systems, it is recommended that the washing occur over a grassy area, or be performed without the use of detergents. Soaps and detergents that runoff the vehicle will end up in our lakes and streams and cause problems for the aquatic organisms living there.

(l) Flows from wetlands and riparian areas - wetlands and riparian areas will retain water for much longer periods of time than most other types of land cover. This means they may still be releasing water even though there has not be a rainfall event recently. The water released from these areas has been filtered and does not pose a risk to our water resources.

(m) Dechlorinated swimming pool discharges - before discharging water from a pool it should be allowed to off-gas any chlorine. Chlorine is a very toxic substance to most aquatic organisms and can be very harmful even at very low concentrations.

(n) pavement and exterior building wash water conducted without the use of detergents or other chemicals - while this type of discharge will contain some particles, the particles would enter the storm drainage system with the next rain anyway. Therefore, the risk to water quality posed by these types of discharges is minimal.

(o) discharges or flows from fire fighting activities.