Laura Young Mohr writes:

If anyone sees any illegal dumping into storm drains, open waterways or the ravines, it should be reported immediately – 311 can be used. A shorter route (that is also easy to remember): CALL the 645-STREAM #; press the prompt where it will roll over to the 24-hour Sewer Maintenance line (645-7102) and that will alert a crew and/or our investigators.