Illinois recommended standards for sewage works /

Effective March 31, l980.

Private sewage disposal licensing act and code, 2003.

"12/02"--Colophon.

Public hearings on the draft NPDES permit for surface discharging private sewage disposal systems : Common Q & A.

"December 2006"

Relative effects on stream biota of chlorine and ammonia occurring in secondary sewage /

"Project no. 20./32."

Sewage disposal in Metropolitan Chicago : research report prepared pursuant to Proposal 638, by Senator W. Russell Arrington.

"Preliminary print."

Two-phase anaerobic digestion for enhanced stabilization and methanation of sewage sludge /

"ILENR/AE-92/02."

Preliminary reports on the disposal of New York's sewage ...

Mode of access: Internet.

Selected biological references applicable to sewage treatment.

Mode of access: Internet.

A study of the effect of automatic sequence clothes washing machines on individual sewage disposal systems, conducted for the Federal Housing Administration under contract no. Ha-fh-646 (amendment no. 1) March 22, 1956.

Mode of access: Internet.

Water & sewage works.

Vols. 76 include Reference and data section for 1929 (1929- called Water works and sewerage data section)

Operation and control of sewage treatment plants.

Mode of access: Internet.

American municipalities. Accounting, paving, street cleaning, sewers and sewage, municipal law

No numbers were issued from May to Sept. 1911

Assessing the seasonal influence of sewage and agricultural nutrient inputs in a subtropical river estuary

A combination of physical and chemical measurements and biological indicators identified nutrient impacts throughout an Australian subtropical river estuary. This was a balance of sewage inputs in the lower river and agricultural inputs in the mid-upper river, the combined influence being greater in the wet season due to greater agricultural surface runoff. Field sampling in the region was conducted at 6 sites within the river, over 5 surveys to encapsulate both wet and dry seasonal effects. Parameters assessed were tissue nitrogen (N) contents and delta(15)N signatures of mangroves and macroalgae, phytoplankton nutrient addition bioassays, and standard physical and chemical variables. Strong spatial (within river) and temporal (seasonal) variability was observed in all parameters. Poorest water quality was detected in the middle (agricultural) region of the river in the wet season, attributable to large diffuse inputs in this region. Water quality towards the river mouth remained constant irrespective of season due to strong oceanic flushing. Mangrove and macroalgal tissue delta(15)N and %N proved a successful combination for discerning sewage and agricultural inputs. Elevated delta(15)N and %N represented sewage inputs, whereas low delta(15)N and elevated %N was indicative of agricultural inputs. Phytoplankton bioassays found the system to be primarily responsive to nutrient additions in the warmer wet season, with negligible responses observed in the cooler dry season. These results indicate that the Tweed River is sensitive to the different anthropogenic activities in its catchment and that each activity has a unique influence on receiving water quality.

Using nitrogen stable isotope ratios (delta N-15) of macroalgae to determine the effectiveness of sewage upgrades: changes in the extent of sewage plumes over four years in Moreton Bay, Australia

Nitrogen loading to aquatic ecosystems from sewage is recognised worldwide as a growing problem. The use of nitrogen stable isotopes as a means of discerning sewage nitrogen in the environment has been used annually by the Ecosystem Health Monitoring Program in Moreton Bay (Australia) since 1997 when the technique was first developed. This (sewage plume mapping) technique, which measures the delta(15)N isotopic signature of the red macroalga Catenella nipae after incubation in situ, has demonstrated a large reduction in the magnitude and spatial extent of sewage nitrogen within Moreton Bay over the past 5 years. This observed reduction coincides with considerable upgrades to the nitrogen removal efficacy at several sewage treatment plants within the region. This paper describes the observed changes and evaluates whether they can be attributed to the treatment upgrades. (c) 2004 Published by Elsevier Ltd.