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- Meters must demonstrate in testing that errors of registration are not introduced by low battery voltage. - Batteries should issue an accurate measurement or none at all - A “window of warning” can and should be designed into the circuit board that would provide the required notification; also, the unit can be designed to shut down altogether when voltage drops below a pre-determined threshold - ASME A112.4.7, paragraph 2.3, provides for a 5-year life and a 3-month warning. - AWWA specifies a 15-year battery life - If there is a warning, then there must be some specification as to who receives the warning signal; “display criteria” are needed or the signal should feed into a recording system. - ASME A112.4.7 states that there shall be an “external indication.” - Complete shut-down of data transmission due to low voltage means no charges would be made to the responsible party and, as such, the failure of the battery would get attention. The immediate response by the owner or manager to such a situation, however, would likely be to create an “estimated bill” for as long as the law allows, which is essentially forever in all but three states that do not allow utility cost allocation (Delaware, Mississippi, and North Carolina) the meter output (reading) should be visible to the property owner, the dwelling unit occupant, and the billing company. - A shorter battery life means that the device needs to be replaced more frequently with the cost being incurred by the meter manufacturer. - We are proposing a technical standard and the state and local jurisdictions should deal with billing, etc. Conclusions based upon committee’s comments: The battery should have a minimum life of 5 years and provide for a 3-month low battery signal as currently specified in the ASME code. However, there needs to be a requirement that the data is not compromised due to low voltage: data needs to be deterministic--either transmitted correctly or not at all. Visible Meter Reads Committee member comments: - Cell phones don’t have visible “meters” to show how many minutes have been used; technology is taking us away from visible meter reads; technology permits current reading to always be obtained. - Having the data displayed on a computer console (instead of the meter itself) is OK, but the data: 246
(1) Must not be subject to manipulation, either intentionally or not, e.g., RF interference, static electricity, etc; (2) Must be accessible within a reasonable period of time to the person paying the bill; and (3) Transmission must be reliable. (4) Must display the customer’s current actual volume (5) Should include in a non-mandatory appendix to the standard stating individual meter and totalized values be made available. Conclusions based upon committee’s comments: A visible data read at the meter is not required, provided that the register shall be encoded in nonvolatile memory. Meter customers shall have ready access to current reading values. This is in the current ASME code in Section A112.4.7, paragraph 2.8. The resolution of billing data should be left to the local jurisdiction. Submeter Accuracy Committee member comments: - Testing to application conditions- (1) Certificate of Installation should indicate under what physical conditions (including orientation) the meter was installed; the certificate should be provided to the local authority; the testing for that class of meters should, of necessity, be consistent with the manufacturer-recommended installation conditions. (2) Manufacturer should provide an error chart showing the accuracy at, for example, 0, 30, 45, 60 and 90 degrees from horizontal, so that the user understands the meter’s performance limits. (3) Manufacture should provide for an error chart for hot and cold water from 45 degrees Fahrenheit to 150 degrees Fahrenheit. - If manufacturer’s instructions say, “only install in horizontal position” and the meter is not so-installed, then Weights and Measures will require the owner to remove the meter. California Weights and Measures representatives go into the field to check on every installation. 247
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NATIONAL MULTIPLE FAMILY SUBMETERIN
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CONTENTS LIST OF TABLES............
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Matched-Pair Analysis .............
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LIST OF TABLES Table ES.1.1 Breakdo
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Table 6.6 Elasticity values, analys
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Figure 4.30 RUBS water bill #6 ....
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investigated local water savings as
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We are grateful to the members of a
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quantitative aspects of separate bi
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3. Owner/postcard survey: To identi
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"averages" of impact property water
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in-rent properties, others used the
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of these models included the billin
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70 Average Annual Water Use Per Uni
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COSTS AND BENEFITS Beyond quantifyi
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service charge, then the resident w
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Billing Method Efficient Fixtures?
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70 Avg. Water Use per MF Unit (kgal
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REGULATORY FRAMEWORK REVIEW The fra
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Table ES.1.12 NSUAA Summary of Stat
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above, the researchers offer the fo
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service is preferable, and would he
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practices (BMPs) should be implemen
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infrastructure of the building and
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multi-family housing. The transfer
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CHAPTER 1 INTRODU CTION More and mo
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In 1998, 15.0%, or 15.4 million, of
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TERMINOLOGY AND DEFINITIONS OF BILL
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submetering. With utility-submeteri
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all the two bedroom units for $20 p
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HOW TO USE THIS REPORT This report
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CHAPTER 2 LITERAT URE REVIEW As the
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A review of the literature unearthe
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The price elasticity of water deman
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expected. Additionally, McClelland
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submetered and five control (in-ren
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Another study might want to target
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CHAPTER 3 RESEARC H METHODS, APPROA
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1. Selection of participating study
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STUDY SITE SELECTION The Study aime
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Figure 3.2 National Multiple Family
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Matched pair protocol/survey - conf
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information given the available bud
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survey. Service companies that prov
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in “business to business” calli
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MATCHED PAIR SAMPLE The purpose of
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The second part of the visit requir
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epresentative of a known population
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51 Table 3.7 Postcard survey statis
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Table 3.8 Comparison of annual wate
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postcard survey. Nevertheless, exam
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confidence interval ranged from 49.
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particular property (e.g., the mont
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State PUC officials - water commiss
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10. The PROPID number appearing on
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These costs represent the commodity
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The postcard survey provided inform
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Table 4.4 Average number of units f
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Two-thirds of the properties that r
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Percent of Surveyed Properties with
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$700 Average Rent Per Bedroom ($) $
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Percent of Surveyed Properties with
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Impact properties were also more li
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Table 4.8 Issues considered before
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Percent of Surveyed Impact Properti
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60% Percent of Surveyed Properties
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From the visits, it was found that
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100% Percent of Surveyed Residents
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Roughly similar proportions of resi
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inserts for toilets (21%) or low-fl
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proportion were unsure, 37% from su
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Table 4.18 Ownership and rental rat
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Figure 4.17 Submeter water bill #1
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wastewater rates are not shown so t
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Figure 4.23 Hot water hybrid water
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RUBS Sample Bills Seven sample RUBS
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wastewater rates are not shown so t
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Figure 4.28 RUBS water bill #4 from
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Figure 4.30 RUBS water bill #6 RUBS
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directly to and then paid by the th
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never subtracting for common area w
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Late Fees At the start of water bil
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124
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intuitively clear, and matches comm
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Indoor water use was normalized on
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Table 5.3 Summarized water use anal
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easonable assumption since there is
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Figure 5.1 shows the frequency dist
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40 Difference in Annual Water Use p
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after 1995. By including only those
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Table 5.11 Statistical tests compar
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Factors that Influence Water Use Th
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Table 5.12 Association of categoric
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Indoor Water Use per Unit in 2001 I
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Table 5.13 Continuous factors from
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Multivariate Models to Determine Im
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properties built before 1995 were c
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A = Beta coefficient for “Propert
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substantially reduces the sample si
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Table 5.17 Model #2 coefficients an
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0.00 indicating that whatever fit d
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commodity charge for water and wast
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properties having generally lower w
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110 Average Annual Water Use Per Un
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analysis, intended to control best
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Table 5.27 Paired samples test, all
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Table 5.30 Estimated water use befo
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Table 5.33 Comparison of water savi
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180
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sector only reduced usage by 18% (A
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Table 6.1 Avoided costs from submet
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submetered. Complete responses of c
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included in this cost/benefit analy
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Table 6.3 Cost and benefit for owne
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Perceived Concerns In the resident
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With a service fee, residents could
Page 248 and 249: Table 6.4 Economic return for a res
Page 250 and 251: ANALYSIS OF PRICE ELASTICITIES Econ
Page 252 and 253: concluded that if a single elastici
Page 254 and 255: esults from this analysis point to
Page 256 and 257: over which they have control than d
Page 258 and 259: According to the basic consumer cho
Page 260 and 261: The consumer choice problem can be
Page 262 and 263: 210
Page 264 and 265: water systems from compliance with
Page 266 and 267: and methods of practice. NIST publi
Page 268 and 269: Table 7.1 NSUAA Summary of State Re
Page 270 and 271: New Surveys of State Agencies and W
Page 272 and 273: the AWWA WaterStats 1999 database.
Page 274 and 275: Measures, which dispatches a public
Page 276 and 277: Mississippi, Missouri, Pennsylvania
Page 278 and 279: 226 Table 7.6 Summary of utility re
Page 280 and 281: DISCUSSION - KEY EXAMPLES OF STATE
Page 282 and 283: ill. Condominium associations are g
Page 284 and 285: under construction after January 1,
Page 286 and 287: Weights and Measures Regulation In
Page 288 and 289: from the submetering. Meter testing
Page 290 and 291: clean and decent housing or the lac
Page 292 and 293: 240
Page 294 and 295: NATIONAL ORGANIZATIONAL STRUCTURE F
Page 296 and 297: complaints in all 50 states and app
Page 300 and 301: - Plumbing systems are space constr
Page 302 and 303: (2) Twisted or kinked flex supply l
Page 304 and 305: 252
Page 306 and 307: Estimated Water Use By Different Bi
Page 308 and 309: there are clear benefits to these s
Page 310 and 311: study site. These values were then
Page 312 and 313: immediately strengthens the owner's
Page 314 and 315: among the nation's key strategies f
Page 316 and 317: all repair and replacement decision
Page 318 and 319: These findings underscore the obser
Page 320 and 321: varies with volume of use) for mult
Page 322 and 323: Recommendation 6 - Efficient plumbi
Page 324 and 325: financially responsible for their o
Page 326 and 327: individual unit, the volume allocat
Page 328 and 329: RECOMMENDATIONS FOR FURTHER RESEARC
Page 330 and 331: Fixed rates - Part of a master mete
Page 332 and 333: Total-capture submetering - a type
Page 334 and 335: 282
Page 336 and 337: Corral, L.R. 1997. Price and Non-Pr
Page 338 and 339: McClelland, L. 1980. Encouraging En
Page 340: Young, C.E., K.R. Kinsley and W.E.
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